0001066605-22-000033 | 10-Q | XBRL Viewer | Heidrick Struggles International INC

Print Document View Excel Document

Cover - shares	3 Months Ended
Cover - shares	Mar. 31, 2022	Apr. 22, 2022
Cover [Abstract]
Document Type	10-Q
Document Period End Date	Mar. 31, 2022
Document Quarterly Report	true
Document Transition Report	false
Entity Filer Category	Large Accelerated Filer
Entity File Number	0-25837
Entity Registrant Name	HEIDRICK & STRUGGLES INTERNATIONAL, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	36-2681268
City Area Code	(312)
Local Phone Number	496-1200
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	HSII
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		19,717,804
Entity Central Index Key	0001066605
Document Fiscal Year Focus	2022
Current Fiscal Year End Date	--12-31
Entity Address, Address Line One	233 South Wacker Drive
Entity Address, Address Line Two	Suite 4900
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60606-6303
Document Fiscal Period Focus	Q1
Amendment Flag	false
Document Information [Line Items]
Entity Shell Company	false
Entity Emerging Growth Company	false

Statement of Financial Position, Classified (Statement) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Assets, Current [Abstract]
Cash and Cash Equivalents, at Carrying Value	$ 267,986,000	$ 545,225,000
Accounts Receivable, after Allowance for Credit Loss, Current	186,220,000	133,750,000
Prepaid Expense	30,681,000	21,754,000
Other Assets, Current	47,146,000	41,449,000
Income Taxes Receivable	3,569,000	3,210,000
Assets, Current	535,602,000	745,388,000
Assets, Noncurrent [Abstract]
Property, Plant and Equipment, Net	27,162,000	27,085,000
Operating Lease, Right-of-Use Asset	69,344,000	72,320,000
Assets for Plan Benefits, Defined Benefit Plan	12,372,000	12,715,000
Long-term Investments	38,006,000	36,051,000
Other Assets, Noncurrent	23,448,000	23,377,000
Goodwill	139,017,000	138,524,000
Other Intangible Assets, Net	8,462,000	9,169,000
Deferred Income Tax Assets, Net	42,159,000	42,169,000
Assets, Noncurrent	359,970,000	361,410,000
Assets	895,572,000	1,106,798,000
Liabilities, Current [Abstract]
Accounts Payable, Current	16,350,000	20,374,000
Employee-related Liabilities, Current	179,663,000	409,026,000
Deferred Revenue, Current	55,364,000	51,404,000
Operating Lease, Liability, Current	18,963,000	19,332,000
Other Liabilities, Current	53,982,000	24,554,000
Accrued Income Taxes, Current	15,397,000	10,004,000
Liabilities, Current	339,719,000	534,694,000
Liabilities, Noncurrent [Abstract]
Accrued Salaries and Benefits	71,235,000	73,779,000
Liability, Defined Benefit Plan, Noncurrent	57,076,000	55,593,000
Operating Lease, Liability, Noncurrent	62,439,000	65,625,000
Other Liabilities, Noncurrent	14,338,000	41,087,000
Liabilities, Noncurrent	205,088,000	236,084,000
Liabilities	544,807,000	770,778,000
Stockholders' Equity Attributable to Parent [Abstract]
Preferred Stock, Value, Issued	0	0
Common Stock, Value, Issued	197,000	196,000
Treasury Stock, Value	(191,000)	(191,000)
Additional Paid in Capital, Common Stock	233,641,000	233,163,000
Retained Earnings (Accumulated Deficit)	116,525,000	101,177,000
Accumulated Other Comprehensive Income (Loss), Net of Tax	593,000	1,675,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	350,765,000	336,020,000
Liabilities and Equity	$ 895,572,000	$ 1,106,798,000

Statement of Income (Statement) - USD ($)	3 Months Ended
Statement of Income (Statement) - USD ($)	Mar. 31, 2022	Mar. 31, 2021
Revenue from Contract with Customer, Excluding Assessed Tax	$ 283,861,000	$ 193,656,000
Revenues	285,537,000	194,731,000
Labor and Related Expense	201,445,000	141,363,000
General and Administrative Expense	29,794,000	27,368,000
Operating Expenses	255,305,000	175,123,000
Operating Income (Loss)	30,232,000	19,608,000
Interest Income (Expense), Net	110,000	82,000
Other Nonoperating Income (Expense)	(2,471,000)	3,082,000
Nonoperating Income (Expense)	(2,361,000)	3,164,000
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	27,871,000	22,772,000
Income Tax Expense (Benefit)	9,404,000	7,940,000
Net Income (Loss) Attributable to Parent	18,467,000	14,832,000
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	(1,082,000)	(693,000)
Other Comprehensive Income (Loss), Net of Tax	(1,082,000)	(693,000)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 17,385,000	$ 14,139,000
Weighted Average Number of Shares Outstanding, Basic	19,624,000	19,387,000
Weighted Average Number of Shares Outstanding, Diluted	20,511,000	20,171,000
Earnings Per Share, Basic	$ 0.94	$ 0.77
Earnings Per Share, Diluted	0.90	0.74
Common Stock, Dividends, Per Share, Declared	$ 0.15	$ 0.15
Restructuring Charges	$ 0	$ 3,861,000
Research and Development Expense	$ 4,402,000	$ 0
Common Stock, Dividends, Per Share, Declared	$ 0.15	$ 0.15
Common Stock, Shares, Outstanding	19,717,804
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 350,765,000	$ 278,570,000
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	3,698,000	2,991,000
Restricted Stock, Value, Shares Issued Net of Tax Withholdings		(3,090,000)
Dividends, Cash	(2,940,000)	(2,905,000)
Dividend, Share-based Payment Arrangement, Cash	$ (179,000)	$ (167,000)
Common Stock Including Additional Paid in Capital
Common Stock, Shares, Outstanding	19,723,000	19,586,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 197,000	$ 196,000
Treasury Stock
Common Stock, Shares, Outstanding	5,000	88,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ (191,000)	$ (3,090,000)
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings		(138,000)
Restricted Stock, Value, Shares Issued Net of Tax Withholdings		$ 4,951,000
Additional Paid-in Capital
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	233,641,000	225,998,000
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	3,698,000	2,991,000
Restricted Stock, Value, Shares Issued Net of Tax Withholdings		(8,041,000)
Retained Earnings
Net Income (Loss) Attributable to Parent	18,467,000	14,832,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	116,525,000	52,742,000
Dividends, Cash	2,940,000	2,905,000
Dividend, Share-based Payment Arrangement, Cash	179,000	167,000
AOCI Attributable to Parent
Other Comprehensive Income (Loss), Net of Tax	(1,082,000)	(693,000)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	593,000	2,724,000
Reimbursements
Revenue from Contract with Customer, Excluding Assessed Tax	1,676,000	1,075,000
Cost of Goods and Services Sold	1,676,000	1,075,000
Cost of Services
Cost of Goods and Services Sold	$ 17,988,000	$ 1,456,000

Statement of Shareholders' Equity (Statement) - USD ($)	Total	Common Stock Including Additional Paid in Capital	Treasury Stock	Additional Paid-in Capital	Retained Earnings	AOCI Attributable to Parent	Common Stock
Common Stock, Shares, Outstanding		19,586,000	226,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 267,602,000	$ 196,000	$ (8,041,000)	$ 231,048,000	$ 40,982,000	$ 3,417,000
Net Income (Loss) Attributable to Parent	14,832,000				14,832,000
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	14,139,000
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	2,991,000			2,991,000
Restricted Stock, Value, Shares Issued Net of Tax Withholdings	(3,090,000)		$ 4,951,000	(8,041,000)
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings			(138,000)
Dividends, Cash	(2,905,000)				2,905,000
Dividend, Share-based Payment Arrangement, Cash	$ (167,000)				167,000
Common Stock, Dividends, Per Share, Declared	$ 0.15
Other Comprehensive Income (Loss), Net of Tax	$ (693,000)					(693,000)
Common Stock, Shares, Outstanding		19,586,000	88,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 278,570,000	$ 196,000	$ (3,090,000)	225,998,000	52,742,000	2,724,000
Common Stock, Shares, Outstanding	19,591,527	19,597,000	5,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 336,020,000	$ 196,000	$ (191,000)	233,163,000	101,177,000	1,675,000
Net Income (Loss) Attributable to Parent	18,467,000				18,467,000
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	17,385,000
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	3,698,000			3,698,000
Stock Issued During Period, Value, New Issues	(3,219,000)			(3,220,000)			$ 1,000
Stock Issued During Period, Shares, New Issues							126,000
Dividends, Cash	(2,940,000)				2,940,000
Dividend, Share-based Payment Arrangement, Cash	$ (179,000)				179,000
Common Stock, Dividends, Per Share, Declared	$ 0.15
Other Comprehensive Income (Loss), Net of Tax	$ (1,082,000)					(1,082,000)
Common Stock, Shares, Outstanding	19,717,804	19,723,000	5,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 350,765,000	$ 197,000	$ (191,000)	$ 233,641,000	$ 116,525,000	$ 593,000

Statement of Cash Flows (Statement) - USD ($)	3 Months Ended
Statement of Cash Flows (Statement) - USD ($)	Mar. 31, 2022	Mar. 31, 2021
Statement of Cash Flows [Abstract]
Net Income (Loss) Attributable to Parent	$ 18,467,000	$ 14,832,000
Depreciation, Depletion and Amortization	2,620	6,068,000
Deferred Income Tax Expense (Benefit)	(477)	(495,000)
Share-based Payment Arrangement, Noncash Expense	3,698	2,991,000
Accretion Expense	271	0
Marketable Securities, Gain (Loss)	0	(1,000)
Gain (Loss) on Disposition of Assets	167	21,000
Increase (Decrease) in Accounts Receivable	(53,142)	(41,209,000)
Increase (Decrease) in Accounts Payable	(4,156)	1,365,000
Increase (Decrease) in Accrued Liabilities	(227,424)	(116,327,000)
Restructuring Reserve, Accrual Adjustment	0	(2,902,000)
Increase (Decrease) in Deferred Revenue	4,137	963,000
Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable	5,028	6,819,000
Increase (Decrease) in Obligation, Pension Benefits	3,497	1,235,000
Increase (Decrease) in Prepaid Expense	(9,081)	(7,894,000)
Increase (Decrease) in Other Operating Assets and Liabilities, Net	(5,801)	(8,037,000)
Net Cash Provided by (Used in) Operating Activities	(262,196)	(142,571,000)
Payments to Acquire Property, Plant, and Equipment	(1,804)	(945,000)
Payments to Acquire Available-for-sale Securities	(5,011)	(1,354,000)
Proceeds from Sale of Debt Securities, Available-for-sale	763	20,153,000
Net Cash Provided by (Used in) Investing Activities	(6,052)	17,854,000
Payments of Dividends	(3,119)	(3,072,000)
Payment, Tax Withholding, Share-based Payment Arrangement	(3,219)	(3,090,000)
Net Cash Provided by (Used in) Financing Activities	(6,338)	(6,162,000)
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	(2,671)	(1,539,000)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(277,257)	(132,418,000)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	268,002,000	184,071,000
Payments to Acquire Property, Plant, and Equipment	1,804	945,000
Payments to Acquire Available-for-sale Securities	5,011	1,354,000
Net Cash Provided by (Used in) Investing Activities	(6,052)	17,854,000
Payments of Dividends	3,119	3,072,000
Payment, Tax Withholding, Share-based Payment Arrangement	3,219	3,090,000
Net Cash Provided by (Used in) Financing Activities	(6,338)	(6,162,000)
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	(2,671)	(1,539,000)
Net Income (Loss) Attributable to Parent	18,467,000	14,832,000
Depreciation, Depletion and Amortization	2,620	6,068,000
Deferred Income Tax Expense (Benefit)	(477)	(495,000)
Share-based Payment Arrangement, Noncash Expense	3,698	2,991,000
Accretion Expense	271	0
Marketable Securities, Gain (Loss)	0	1,000
Gain (Loss) on Disposition of Assets	(167)	(21,000)
Increase (Decrease) in Accounts Receivable	53,142	41,209,000
Increase (Decrease) in Accounts Payable	(4,156)	1,365,000
Increase (Decrease) in Accrued Liabilities	(227,424)	(116,327,000)
Restructuring Reserve, Accrual Adjustment	0	(2,902,000)
Increase (Decrease) in Deferred Revenue	4,137	963,000
Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable	5,028	6,819,000
Increase (Decrease) in Obligation, Pension Benefits	3,497	1,235,000
Increase (Decrease) in Prepaid Expense	9,081	7,894,000
Increase (Decrease) in Other Operating Assets and Liabilities, Net	5,801	8,037,000
Net Cash Provided by (Used in) Operating Activities	(262,196)	(142,571,000)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(277,257)	(132,418,000)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	268,002,000	184,071,000
Proceeds from Sale of Debt Securities, Available-for-sale	$ 763	$ 20,153,000

Statement of Financial Position, Classified (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Preferred Stock, Shares Issued	0	0
Common Stock, Shares Authorized	100,000,000
Common Stock, Par or Stated Value Per Share	$ 0.01
Common Stock, Shares, Outstanding	19,717,804	19,591,527
Treasury Stock, Shares	5,080
Accounts Receivable, Allowance for Credit Loss, Current	$ 6,278,000	$ 5,666,000
Common Stock, Shares, Issued	19,722,884	19,596,607

Organization, Consolidation and Presentation of Financial Statements	3 Months Ended
	Mar. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure	The accompanying unaudited Condensed Consolidated Financial Statements of Heidrick & Struggles International, Inc. and subsidiaries (the "Company") have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission ("SEC"). The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses. Significant items subject to estimates and assumptions include revenue recognition, income taxes, interim effective tax rate and the assessment of goodwill, other intangible assets and long-lived assets for impairment. Estimates are subject to a degree of uncertainty and actual results could differ from these estimates. In the opinion of management, all adjustments necessary to fairly present the financial position of the Company at March 31, 2022 and December 31, 2021, the results of operations for the three months ended March 31, 2022 and 2021 and its cash flows for the three months ended March 31, 2022 and 2021 have been included and are of a normal, recurring nature except as otherwise disclosed. These financial statements and notes are to be read in conjunction with the Company’s Consolidated Financial Statements and Notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021, as filed with the SEC on February 28, 2022.

Accounting Policies

3 Months Ended

Mar. 31, 2022

Accounting Policies [Abstract]

Basis of Presentation and Significant Accounting Policies

A complete listing of the Company’s significant accounting policies is discussed in Note 2, Summary of Significant Accounting Policies, in the Notes to Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021.

Revenue Recognition

See Note 3, Revenue.

Cost of Services

Cost of services consists of third-party contractor costs related to the delivery of various services in the Company's On-Demand Talent and Heidrick Consulting operating segments.

Research and development

Research and development consists of payroll, employee benefits, stock-based compensation, other employee expenses and third-party professional fees associated with new product development.

Marketable Securities

The Company’s marketable securities consist of available-for-sale debt securities with original maturities exceeding three months.

Restricted Cash

The following table provides a reconciliation of the cash and cash equivalents between the Condensed Consolidated Balance Sheets and the Condensed Consolidated Statements of Cash Flows as of March 31, 2022 and 2021, and December 31, 2021 and 2020:


	March 31,				December 31,
	2022		2021		2021		2020
Cash and cash equivalents	$	267,986	$	184,055	$	545,225	$	316,473

Restricted cash included within other non-current assets	16		16		34		16
Total cash, cash equivalents and restricted cash	$	268,002	$	184,071	$	545,259	$	316,489

Earnings per Common Share

Basic earnings per common share is computed by dividing net income by weighted average common shares outstanding for the period. Diluted earnings per share reflect the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted. Common equivalent shares are excluded from the determination of diluted earnings per share in periods in which they have an anti-dilutive effect.

The following table sets forth the computation of basic and diluted earnings per share:


	Three Months Ended March 31,
	2022		2021
Net income	$	18,467	$	14,832
Weighted average shares outstanding:
Basic	19,624		19,387
Effect of dilutive securities:
Restricted stock units	650		589
Performance stock units	237		195
Diluted	20,511		20,171
Basic earnings per share	$	0.94	$	0.77
Diluted earnings per share	$	0.90	$	0.74

Reclassifications

Certain prior year amounts have been recast as a result of the Company's presentation of Cost of services in the Condensed Consolidated Statements of Comprehensive Income. The reclassifications had no impact on net income, net cash flows or stockholders' equity.

Leases

The Company determines if an arrangement is a lease at inception. Operating leases are included in Operating Lease Right-of-Use Assets, Operating Lease Liabilities - Current and Operating Lease Liabilities - Non-Current in our Condensed Consolidated Balance Sheets. The Company does not have any leases that meet the finance lease criteria.

Right-of-use assets represent the Company's right to use an underlying asset for the lease term and lease liabilities represent the Company's obligation to make lease payments arising from the lease. Operating lease right-of-use assets and liabilities are recognized on the commencement date based on the present value of lease payments over the lease term. As most of the Company's leases do not provide an implicit rate, an incremental borrowing rate based on the information available at the commencement date is used in determining the present value of lease payments. The operating lease right-of-use asset also includes any lease payments made in advance and any accrued rent expense balances. Lease terms may include options to extend or terminate the lease when it is reasonably certain that the option will be exercised. Lease expense for lease payments is recognized on a straight-line basis over the lease term.

The Company has lease agreements with lease and non-lease components. For office leases, the Company accounts for the lease and non-lease components as a single lease component. For equipment leases, such as vehicles and office equipment, the Company accounts for the lease and non-lease components separately.

Recently Issued Financial Accounting Standards

In March 2020, the Financial Accounting Standards Board issued Accounting Standards Update ("ASU") No. 2020-04, Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The guidance is intended to provide temporary optional expedients and exceptions to the guidance on contract modifications and hedge accounting to ease the financial reporting burdens related to the expected market transition from the London Interbank Offered Rate (LIBOR) and other interbank offered rates to alternative reference rates. This guidance is effective March 12, 2020, and the Company may elect to apply the amendments prospectively through December 31, 2022. The Company is currently evaluating the impact of this accounting guidance. The effect is not known or reasonably estimable at this time.

Reclassifications

Revenue from Contract with Customer

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer

Executive Search

Revenue is recognized as performance obligations are satisfied by transferring a good or service to a client. Generally, each executive search contract contains one performance obligation which is the process of identifying potentially qualified candidates for a specific client position. In most contracts, the transaction price includes both fixed and variable consideration. Fixed compensation is comprised of a retainer, equal to approximately one-third of the estimated first year compensation for the position to be filled, and indirect expenses, equal to a specified percentage of the retainer, as defined in the contract. The Company generally bills clients for the retainer and indirect expenses in one-third increments over a three-month period commencing in the month of a client’s acceptance of the contract. If actual compensation of a placed candidate exceeds the original compensation estimate, the Company is often authorized to bill the client for one-third of the excess compensation. The Company refers to this additional billing as uptick revenue. In most contracts, variable consideration is comprised of uptick revenue and direct expenses. The Company bills its clients for uptick revenue upon completion of the executive search, and direct expenses are billed as incurred.

The Company estimates uptick revenue at contract inception, based on a portfolio approach, utilizing the expected value method based on a historical analysis of uptick revenue realized in the Company’s geographic regions and industry practices, and initially records a contract’s uptick revenue in an amount that is probable not to result in a significant reversal of cumulative revenue recognized when the actual amount of uptick revenue for the contract is known. Differences between the estimated and actual amounts of variable consideration are recorded when known. The Company does not estimate revenue for direct expenses as it is not materially different than recognizing revenue as direct expenses are incurred.

Revenue from executive search engagement performance obligations is recognized over time as clients simultaneously receive and consume the benefits provided by the Company's performance. Revenue from executive search engagements is recognized over the expected average period of performance, in proportion to the estimated personnel time incurred to fulfill the obligations under the executive search contract. Revenue is generally recognized over a period of approximately six months.

The Company's executive search contracts contain a replacement guarantee which provides for an additional search to be completed, free of charge except for expense reimbursements, should the candidate presented by the Company be hired by the client and subsequently terminated by the client for performance reasons within a specified period of time. The replacement guarantee is an assurance warranty, which is not a performance obligation under the terms of the executive search contract, as the Company does not provide any services under the terms of the guarantee that transfer benefits to the client in excess of assuring that the identified candidate complies with the agreed-upon specifications. The Company accounts for the replacement guarantee under the relevant warranty guidance in Accounting Standards Codification 460 - Guarantees.

On-Demand Talent

The Company enters into contracts with clients that outline the general terms and conditions of the assignment to provide on-demand consultants for various types of consulting projects, which consultants may be independent contractors or temporary employees. The consideration the Company expects to receive under each contract is dependent on the time-based fees specified in the contract. Revenue from on-demand engagement performance obligations is recognized over time as clients simultaneously receive and consume the benefits provided by the Company's performance. The Company has applied the practical expedient to recognize revenue for these services in the amount to which the Company has a right to invoice the client, as this amount corresponds directly with the value provided to the client for the performance completed to date. For transactions where a third-party contractor is involved in providing the services to the client, the Company reports the revenue and the related direct costs on a gross basis as it has determined that it is the principal in the transaction. The Company is primarily

responsible for fulfilling the promise to provide consulting services to its clients and the Company has discretion in establishing the prices charged to clients for the consulting services and is able to contractually obligate the independent service provider to deliver services and deliverables that the Company has agreed to provide to its clients.

Heidrick Consulting

Revenue is recognized as performance obligations are satisfied by transferring a good or service to a client. Heidrick Consulting enters into contracts with clients that outline the general terms and conditions of the assignment to provide succession planning, executive assessment, top team and board effectiveness and culture shaping programs. The consideration the Company expects to receive under each contract is generally fixed. Most of the Company's consulting contracts contain one performance obligation, which is the overall process of providing the consulting service requested by the client. The majority of our consulting revenue is recognized over time utilizing both input and output methods. Contracts that contain coaching sessions, training sessions or the completion of assessments are recognized using the output method as each session or assessment is delivered to the client. Contracts that contain general consulting work are recognized using the input method utilizing a measure of progress that is based on time incurred on the project.

The Company enters into enterprise agreements with clients to provide a license for online access, via the Company's Culture Connect platform, to training and other proprietary material related to the Company's culture shaping programs. The consideration the Company expects to receive under the terms of an enterprise agreement is comprised of a single fixed fee. The enterprise agreements contain multiple performance obligations, the delivery of materials via Culture Connect and material rights related to options to renew enterprise agreements at a significant discount. The Company allocates the transaction price to the performance obligations in the contract on a stand-alone selling price basis. The stand-alone selling price for the initial term of the enterprise agreement is outlined in the contract and is equal to the price paid by the client for the agreement over the initial term of the contract. The stand-alone selling price for the options to renew, or material right, are not directly observable and must be estimated. This estimate is required to reflect the discount the client would obtain when exercising the option to renew, adjusted for the likelihood that the option will be exercised. The Company estimates the likelihood of renewal using a historical analysis of client renewals. Access to Culture Connect represents a right to access the Company’s intellectual property that the client simultaneously receives and consumes as the Company performs under the agreement, and therefore the Company recognizes revenue over time. Given the continuous nature of this commitment, the Company utilizes straight-line ratable revenue recognition over the estimated subscription period as the Company's clients will receive and consume the benefits from Culture Connect equally throughout the contract period. Revenue related to client renewals of enterprise agreements is recognized over the term of the renewal, which is generally twelve months. Enterprise agreements do not comprise a significant portion of the Company's revenue.

Contract Balances

Contract assets and liabilities are reported in a net position on a contract-by-contract basis at the end of each reporting period. Contract assets and liabilities are classified as current due to the nature of the Company's contracts, which are completed within one year. Contract assets are included within Other Current Assets on the Condensed Consolidated Balance Sheets.

Unbilled receivables: Unbilled revenue represents contract assets from revenue recognized over time in excess of the amount billed to the client and the amount billed to the client is solely dependent upon the passage of time. This amount includes revenue recognized in excess of billed executive search retainers, Heidrick Consulting fees, and On-Demand Talent fees.

Contract assets: Contract assets represent revenue recognized over time in excess of the amount billed to the client and the amount billed to the client is not solely subject to the passage of time. This amount primarily includes revenue recognized for upticks and contingent placement fees in executive search contracts.

Deferred revenue: Contract liabilities consist of deferred revenue, which is equal to billings in excess of revenue recognized.

The following table outlines the changes in the contract asset and liability balances from December 31, 2021 to March 31,

2022:


	March 31, 2022		December 31, 2021		Change
Contract assets
Unbilled receivables, net	$	19,348	$	17,947	$	1,401
Contract assets	21,725		18,995		2,730
Total contract assets	41,073		36,942		4,131

Contract liabilities
Deferred revenue	$	55,364	$	51,404	$	3,960

During the three months ended March 31, 2022, the Company recognized revenue of $51.1 million that was included in the contract liabilities balance at the beginning of the period. The amount of revenue recognized during the three months ended March 31, 2022, from performance obligations partially satisfied in previous periods as a result of changes in the estimates of variable consideration was $8.3 million.

Each of the Company's contracts has an expected duration of one year or less. Accordingly, the Company has elected to utilize the available practical expedient related to the disclosure of the transaction price allocated to the remaining performance obligations under its contracts. The Company has also elected the available practical expedients related to adjusting for the effects of a significant financing component and the capitalization of contract acquisition costs. The Company charges and collects from its clients sales tax and value added taxes as required by certain jurisdictions. The Company has made an accounting policy election to exclude these items from the transaction price in its contracts.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI http://asc.fasb.org/topic&trid=49130388

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130550-203045

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130558-203045

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045

+ Details

Credit Losses

3 Months Ended

Mar. 31, 2022

Credit Loss [Abstract]

Loans, Notes, Trade and Other Receivables Disclosure

The Company is exposed to credit losses primarily through the provision of its executive search, consulting, and on-demand talent services. The Company’s expected credit loss allowance methodology for accounts receivable is developed using historical collection experience, current and future economic and market conditions and a review of the current status of clients' trade accounts receivables. Due to the short-term nature of such receivables, the estimate of amount of accounts receivable that may not be collected is primarily based on historical loss-rate experience. When required, the Company adjusts the loss-rate methodology to account for current conditions and reasonable and supportable expectations of future economic and market conditions. The Company generally assesses future economic conditions for a period of sixty to ninety days, which corresponds with the contractual life of its accounts receivables. Additionally, specific allowance amounts are established to record the appropriate provision for clients that have a higher probability of default. The Company’s monitoring activities include timely account reconciliation, dispute resolution, payment confirmation, consideration of clients' financial condition and macroeconomic conditions. Balances are written off when determined to be uncollectible. The Company considered the current and expected future economic and market conditions surrounding the COVID-19 pandemic and determined that the estimate of credit losses was not significantly impacted.

The activity in the allowance for credit losses on the Company's trade receivables is as follows:


Balance at December 31, 2021	$	5,666
Provision for credit losses	2,154
Write-offs	(1,534)
Foreign currency translation	(8)
Balance at March 31, 2022	$	6,278

The fair value and unrealized losses on available for sale debt securities, aggregated by investment category and the length of time the security has been in an unrealized loss position, are as follows:


	Less Than 12 Months				Balance Sheet Classification
Balance at March 31, 2022	Fair Value		Unrealized Loss		Cash and Cash Equivalents		Marketable Securities
U.S. Treasury securities	$	51,984	$	1	$	51,984	$	—

There were no investments with unrealized losses at December 31, 2021.

Property, Plant, and Equipment

3 Months Ended

Mar. 31, 2022

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure

The components of the Company’s property and equipment are as follows:


	March 31, 2022		December 31, 2021
Leasehold improvements	$	41,510	$	42,252
Office furniture, fixtures and equipment	14,515		14,933
Computer equipment and software	25,640		24,293
Property and equipment, gross	81,665		81,478
Accumulated depreciation	(54,503)		(54,393)
Property and equipment, net	$	27,162	$	27,085

Depreciation expense for each of the three months ended March 31, 2022 and 2021 was $1.8 million.

Leases, Codification Topic 842

3 Months Ended

Mar. 31, 2022

Leases [Abstract]

Lessee, Operating Leases

The Company's lease portfolio is comprised of operating leases for office space and equipment. The majority of the Company's leases include both lease and non-lease components, which the Company accounts for differently depending on the underlying class of asset. Certain of the Company's leases include one or more options to renew or terminate the lease at the Company's discretion. Generally, the renewal and termination options are not included in the right-of-use assets and lease liabilities as they are not reasonably certain of exercise. The Company regularly evaluates the renewal and termination options and when they are reasonably certain of exercise, includes the renewal or termination option in the lease term.

As most of the Company's leases do not provide an implicit interest rate, the Company utilizes an incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. The Company has a centrally managed treasury function and therefore, a portfolio approach is applied in determining the incremental borrowing rate. The incremental borrowing rate is the rate of interest that the Company would have to pay to borrow on a fully collateralized basis over a similar term in an amount equal to the total lease payments in a similar economic environment.

Office leases have remaining lease terms that range from less than one year to 11.3 years, some of which also include options to extend or terminate the lease. Most office leases contain both fixed and variable lease payments. Variable lease costs consist primarily of rent escalations based on an established index or rate and taxes, insurance, and common area or other maintenance costs, which are paid based on actual costs incurred by the lessor. The Company has elected to utilize the available practical expedient to not separate lease and non-lease components for office leases.

As part of the Company's restructuring plan, a lease component related to one of the Company's offices was abandoned and the useful life of the associated right-of-use asset was shortened to correspond with the cease-use date. As a result of the change in the useful life, approximately $4.0 million of right-of-use asset amortization was accelerated and recorded in Restructuring charges in the Condensed Consolidated Statements of Comprehensive Income and Depreciation and amortization in the Condensed Consolidated Statements of Cash Flows during the three months ended March 31, 2021.

Equipment leases, which are comprised of vehicle and office equipment leases, have remaining terms that range from less than one year to 4.7 years, some of which also include options to extend or terminate the lease. The Company's equipment leases do not contain variable lease payments. The Company separates the lease and non-lease components for its equipment leases. Equipment leases do not comprise a significant portion of the Company's lease portfolio.

Lease cost components included within General and Administrative Expenses in our Condensed Consolidated Statements of Comprehensive Income were as follows:


	Three Months Ended March 31,
	2022		2021
Operating lease cost	$	4,358	$	4,867
Variable lease cost	1,161		1,228
Total lease cost	$	5,519	$	6,095

Fair Value Measures and Disclosures

3 Months Ended

Mar. 31, 2022

Fair Value Disclosures [Abstract]

Investment

Cash, Cash Equivalents and Marketable Securities

The Company's investments in marketable debt securities, which consist of U.S. Treasury bills, are classified and accounted for as available-for-sale. The Company classifies its marketable debt securities as either short-term or long-term based on each instrument's underlying contractual maturity date. Unrealized gains and losses on marketable debt securities classified as available-for-sale are recognized in Accumulated other comprehensive income in the Condensed Consolidated Balance Sheets until realized.

The Company's cash, cash equivalents, and marketable securities by significant investment category are as follows:



	Cash and Cash Equivalents
Balance at March 31, 2022
Cash	$	145,982

Level 1(1):
Money market funds	28,026
U.S. Treasury securities	93,978
Total Level 1	122,004




Total	$	267,986



	Cash and Cash Equivalents
Balance at December 31, 2021
Cash	$	265,233

Level 1(1):
Money market funds	80,798
U.S. Treasury securities	199,194
Total Level 1	279,992

Total	$	545,225

(1)Level 1 – Quoted prices in active markets for identical assets and liabilities.

Investments, Assets Designated for Retirement and Pension Plans and Associated Liabilities

The Company has a U.S. non-qualified deferred compensation plan that consists primarily of U.S. marketable securities and mutual funds. The aggregate cost basis for these investments was $27.5 million and $22.9 million as of March 31, 2022 and December 31, 2021, respectively.

The Company also maintains a pension plan for certain current and former employees in Germany. The pensions are individually fixed Euro amounts that vary depending on the function and the eligible years of service of the employee. The Company’s investment strategy is to support its pension obligations through reinsurance contracts. The BaFin—German Federal Financial Supervisory Authority—supervises the insurance companies and the reinsurance contracts. The BaFin requires each reinsurance contract to guarantee a fixed minimum return. The Company’s pension benefits are fully reinsured by group insurance contracts with ERGO Lebensversicherung AG, and the group insurance contracts are measured in accordance with BaFin guidelines (including mortality tables and discount rates) which are considered Level 2 inputs.

The following tables provide a summary of the fair value measurements for each major category of investments, assets designated for retirement and pension plans and associated liabilities measured at fair value:


			Balance Sheet Classification
	Fair Value		Other Current Assets		Assets Designated for Retirement and Pension Plans		Investments		Other Current Liabilities		Retirement and Pension Plans
Balance at March 31, 2022

Measured on a recurring basis:
Level 1(1):
U.S. non-qualified deferred compensation plan	$	38,006	$	—	$	—	$	38,006	$	—	$	—

Level 2(2):
Retirement and pension plan assets	13,669		1,297		12,372		—		—		—
Pension benefit obligation	(19,066)		—		—		—		(1,297)		(17,769)
Total Level 2	(5,397)		1,297		12,372		—		(1,297)		(17,769)





Total	$	32,609	$	1,297	$	12,372	$	38,006	$	(1,297)	$	(17,769)


			Balance Sheet Classification
	Fair Value		Other Current Assets		Assets Designated for Retirement and Pension Plans		Investments		Other Current Liabilities		Retirement and Pension Plans
Balance at December 31, 2021

Measured on a recurring basis:
Level 1(1):
U.S. non-qualified deferred compensation plan	$	36,051	$	—	$	—	$	36,051	$	—	$	—

Level 2(2):
Retirement and pension plan assets	14,048		1,333		12,715		—		—		—
Pension benefit obligation	(19,594)		—		—		—		(1,333)		(18,261)
Total Level 2	(5,546)		1,333		12,715		—		(1,333)		(18,261)





Total	$	30,505	$	1,333	$	12,715	$	36,051	$	(1,333)	$	(18,261)

(1)Level 1 – Quoted prices in active markets for identical assets and liabilities.

(2)Level 2 – Quoted prices in active markets for similar assets and liabilities, or other inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.

Contingent Consideration and Compensation

The former owners of the Company's acquired businesses are eligible to receive additional cash compensation based on the attainment of certain operating metrics in the periods subsequent to acquisition. Contingent consideration and compensation are valued using significant inputs that are not observable in the market, which are defined as Level 3 inputs pursuant to fair value measurement accounting. The Company determines the fair value of contingent consideration and compensation using discounted cash flow models.

The following table provides a reconciliation of the beginning and ending balance of Level 3 liabilities for the three months ended March 31, 2022:


	Earnout		Contingent Compensation
Balance at December 31, 2021	$	(35,654)	$	(4,141)

Earnout accretion	(271)		—
Compensation expense	—		(1,089)


Foreign currency translation	—		(760)

Balance at March 31, 2022	$	(35,925)	$	(5,990)

Earnout accruals of $26.9 million and zero were recorded within Other current liabilities as of March 31, 2022 and December 31, 2021, respectively, and earnout accruals of $9.0 million and $35.7 million were recorded within Other non-current liabilities as of March 31, 2022 and December 31, 2021, respectively. The contingent compensation accruals are recorded within non-current Accrued salaries and benefits at both March 31, 2022 and December 31, 2021.

Goodwill and Other Intangible Assets

3 Months Ended

Mar. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets Disclosure

Goodwill

The Company's goodwill by segment is as follows:


	March 31, 2022		December 31, 2021
Executive Search
Americas	$	91,989	$	91,463
Europe	1,499		1,532

Total Executive Search	93,488		92,995
On-Demand Talent	45,529		45,529



Total goodwill	$	139,017	$	138,524

Changes in the carrying amount of goodwill by segment for the three months ended March 31, 2022, are as follows:


	Executive Search						On-Demand Talent
	Americas		Europe		Asia Pacific				Total
Goodwill	$	91,463	$	26,007	$	8,495	$	45,529	$	171,494
Accumulated impairment losses	—		(24,475)		(8,495)		—		(32,970)
Balance at December 31, 2021	91,463		1,532		—		45,529		138,524




Foreign currency translation	526		(33)		—		—		493

Goodwill	91,989		25,974		8,495		45,529		171,987
Accumulated impairment losses	—		(24,475)		(8,495)		—		(32,970)
Balance at March 31, 2022	$	91,989	$	1,499	$	—	$	45,529	$	139,017

Other Intangible Assets, net

The Company’s other intangible assets, net by segment, are as follows:


	March 31, 2022		December 31, 2021
Executive Search
Americas	$	103	$	103
Europe	389		463
Asia Pacific	30		33
Total Executive Search	522		599



On-Demand Talent	7,940		8,570
Total other intangible assets, net	$	8,462	$	9,169

The carrying amount of amortizable intangible assets and the related accumulated amortization are as follows:


	Weighted Average Life (Years)	March 31, 2022						December 31, 2021
		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Client relationships	10.6	$	22,052	$	(16,691)	$	5,361	$	22,127	$	(16,495)	$	5,632
Trade name	3.1	2,474		(1,446)		1,028		2,441		(1,237)		1,204
Software	3.0	3,110		(1,037)		2,073		3,110		(777)		2,333
Total intangible assets	7.8	$	27,636	$	(19,174)	$	8,462	$	27,678	$	(18,509)	$	9,169

Intangible asset amortization expense for the three months ended March 31, 2022 and 2021 was $0.8 million and $0.2 million, respectively.

The Company's estimated future amortization expense related to intangible assets as of March 31, 2022, for the years ended December 31 is as follows:


2022	$	2,113
2023	2,735
2024	1,155
2025	764
2026	527
Thereafter	1,168
Total	$	8,462

Deferred Costs, Capitalized, Prepaid, and Other Assets

3 Months Ended

Mar. 31, 2022

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Additional Financial Information Disclosure

The components of other current assets are as follows:


	March 31, 2022		December 31, 2021
Contract assets	$	41,073	$	36,942
Other	6,073		4,507
Total other current assets	$	47,146	$	41,449

The components of other current liabilities are as follows:


	March 31, 2022		December 31, 2021
Earnout liability	$	26,949	$	—
Other	27,033		24,554
Total other current liabilities	$	53,982	$	24,554

Debt	3 Months Ended
Debt	Mar. 31, 2022
Debt Disclosure [Abstract]
Debt Disclosure	On July 13, 2021, the Company entered into a First Amendment to the 2018 Credit Agreement (the "Amendment"). The Amendment provides the Company with a committed unsecured revolving credit facility in an aggregate amount of $200 million, increased from $175 million as set forth in the 2018 Credit Agreement, which includes a sublimit of $25 million for letters of credit and a sublimit of $10 million for swingline loans, with a $75 million expansion feature. The Amendment matures on July 13, 2026, extended from October 26, 2023 as set forth in the 2018 Credit Agreement. Borrowings under the Amendment may be used for working capital, capital expenditures, permitted acquisitions, restricted payments and for other general corporate purposes of the Company and its subsidiaries. The obligations under the Amendment are guaranteed by certain of the Company’s subsidiaries. As of March 31, 2022 and December 31, 2021, the Company had no outstanding borrowings. The Company was in compliance with the financial and other covenants under the Amendment and no event of default existed.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-URI http://asc.fasb.org/topic&trid=2208564

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1I
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1I
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(c))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1C
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1C
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1E
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1I
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

+ Details

Compensation Related Costs, Share Based Payments

3 Months Ended

Mar. 31, 2022

Share-based Payment Arrangement [Abstract]

Share-based Payment Arrangement

The Company's Third Amended and Restated 2012 Heidrick & Struggles GlobalShare Program (the "Third A&R Program") provides for grants of stock options, stock appreciation rights, and other stock-based compensation awards that are valued based upon the grant date fair value of shares. These awards may be granted to directors, selected employees and independent contractors.

As of March 31, 2022, 3,650,461 awards have been issued under the Third A&R Program, including 748,407 forfeited awards, and 447,946 shares remain available for future awards. The Third A&R Program provides that no awards can be granted after May 28, 2028.

The Company measures its stock-based compensation costs based on the grant date fair value of the awards and recognizes these costs over the requisite service period.

A summary of information with respect to stock-based compensation is as follows:


	Three Months Ended March 31,
	2022		2021
Salaries and benefits (1)	$	2,904	$	5,461

Income tax benefit related to stock-based compensation included in net income	790		1,453

(1) Includes $0.8 million of income and $2.5 million of expense related to cash settled restricted stock units for the three months ended March 31, 2022 and 2021, respectively.

Restricted Stock Units

Restricted stock units are subject to ratable vesting over a three-year or four-year period dependent upon the terms of the individual grant. Compensation expense related to service-based restricted stock units is recognized on a straight-line basis over the vesting period.

Restricted stock unit activity for the three months ended March 31, 2022 is as follows:


	Number of Restricted Stock Units	Weighted- Average Grant-Date Fair Value
Outstanding on December 31, 2021	727,651	$	31.32
Granted	180,429	38.24
Vested and converted to common stock	(141,627)	32.26
Forfeited	(3,530)	37.26
Outstanding on March 31, 2022	762,923	$	32.76

As of March 31, 2022, there was $12.3 million of pre-tax unrecognized compensation expense related to unvested restricted stock units, which is expected to be recognized over a weighted average of 2.6 years.

Performance Stock Units

The Company grants performance stock units to certain of its senior executives. The performance stock units are generally subject to a cliff vesting at the end of a three-year period. The vesting will vary between 0% and 200% based on the attainment of certain performance and market conditions over the three-year vesting period. Half of the award is based on the achievement of operating margin thresholds and half of the award is based on the Company's total shareholder return, relative to a peer group. The fair value of the awards subject to total shareholder return metrics is determined using the Monte-Carlo simulation model. A Monte Carlo simulation model uses stock price volatility and other variables to estimate the probability of satisfying the performance conditions and the resulting fair value of the award. The performance stock units are expensed on a straight-line basis over the three-year vesting period.

Performance stock unit activity for the three months ended March 31, 2022 is as follows:


	Number of Performance Stock Units	Weighted- Average Grant-Date Fair Value
Outstanding on December 31, 2021	232,857	$	32.29
Granted	97,379	38.75
Vested and converted to common stock	(69,784)	40.77
Forfeited	—	—
Outstanding on March 31, 2022	260,452	$	32.43

As of March 31, 2022, there was $7.5 million of pre-tax unrecognized compensation expense related to unvested performance stock units, which is expected to be recognized over a weighted average of 2.1 years.

Phantom Stock Units

Phantom stock units are grants of phantom stock with respect to shares of the Company's common stock that are settled in cash and are subject to various restrictions, including restrictions on transferability, vesting and forfeiture provisions. Shares of phantom stock that do not vest for any reason will be forfeited by the recipient and will revert to the Company.

Phantom stock units are subject to vesting over a period of four years and certain other conditions, including continued service to the Company. As a result of the cash-settlement feature of the awards, the Company classifies the awards as liability awards, which are measured at fair value at each reporting date and the vested portion of the award is recognized as a liability to the extent that the service condition is deemed probable. The fair value of the phantom stock awards on the balance sheet date is determined using the closing share price of the Company's common stock on that date.

The Company recorded phantom stock-based compensation income of $0.8 million and expense of $2.5 million during the three months ended March 31, 2022 and 2021, respectively.

Phantom stock unit activity for the three months ended March 31, 2022 is as follows:


			Number of Phantom Stock Units
Outstanding on December 31, 2021			348,863
Granted			—
Vested			—
Forfeited			—
Outstanding on March 31, 2022			348,863

As of March 31, 2022, there was $3.1 million of pre-tax unrecognized compensation expense related to unvested phantom stock units, which is expected to be recognized over a weighted average of 2.5 years.

Restructuring and Related Activities

3 Months Ended

Mar. 31, 2022

Restructuring and Related Activities [Abstract]

Restructuring and Related Activities Disclosure

During the year ended December 31, 2020, the Company implemented a restructuring plan (the "2020 Plan") to optimize future growth and profitability. The primary components of the 2020 Plan included a workforce reduction, a reduction of the Company's real estate expenses and professional fees, and the elimination of certain deferred compensation programs. The Company continued to incur charges related to the 2020 Plan during the year ended December 31, 2021, which primarily related to finalizing a reduction of the Company's real estate footprint.

The Company did not incur any charges during the three months ended March 31, 2022 and does not anticipate incurring any future charges under the 2020 Plan.

Restructuring charges (reversals) for the three months ended March 31, 2021 by type of charge (reversal) and operating segment are as follows:


	Executive Search
	Americas		Europe		Asia Pacific		Heidrick Consulting		Global Operations Support		Total
Employee related	$	19	$	(52)	$	(124)	$	(44)	$	7	$	(194)
Office related	3,676		—		—		366		—		4,042
Other	3		—		—		—		10		13
Total	$	3,698	$	(52)	$	(124)	$	322	$	17	$	3,861

Restructuring charges incurred to date under the 2020 Plan, which are solely comprised of prior period charges, by type of charge and reportable segment are as follows:


	Executive Search
	Americas		Europe		Asia Pacific		Heidrick Consulting		Global Operations Support		Total
Employee related	$	16,226	$	8,256	$	4,110	$	2,589	$	1,416	$	32,597
Office related	18,101		226		374		2,352		1,819		22,872
Other	34		24		6		71		560		695
Total	$	34,361	$	8,506	$	4,490	$	5,012	$	3,795	$	56,164

As part of the Company's reduction in real estate expenses under the 2020 Plan, a lease component related to one of the Company's offices was abandoned. In September 2021, the Company entered into a termination and surrender agreement for this lease component. Under the terms of the agreement, the Company made a one-time payment of $11.7 million to release the Company from all remaining obligations under the lease. At the time of payment, the Company had accrued approximately $17.4 million of lease liabilities related to future payments under the remaining lease term. Upon making the one-time payment, the lease liabilities were relieved, resulting in a gain on termination of approximately $5.7 million, which is recorded in Restructuring charges in the Consolidated Statements of Comprehensive Income (Loss) for the year ended December 31, 2021.

Changes in the restructuring accrual for the three months ended March 31, 2022 were as follows:


	Employee Related		Office Related		Other		Total























Accrual balance at December 31, 2021	8,394		—		—		8,394

Cash payments	(4,843)		—		—		(4,843)
Non-cash write-offs	(34)						(34)

Exchange rate fluctuations	(18)		—		—		(18)
Accrual balance at March 31, 2022	$	3,499	$	—	$	—	$	3,499

Restructuring accruals are recorded within current Accrued salaries and benefits as of March 31, 2022.

Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Income Tax Disclosure	The Company reported income before taxes of $27.9 million and an income tax provision of $9.4 million for the three months ended March 31, 2022. The Company reported income before taxes of $22.8 million and an income tax provision of $7.9 million for the three months ended March 31, 2021. The effective tax rates for the three months ended March 31, 2022 and 2021, were 33.7% and 34.9%, respectively. The effective tax rates for the three months ended March 31, 2022 and 2021 were each impacted by one-time items and the mix of income.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 21
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32857-109319

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330215-122817

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 17
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.5.Q1)
-URI http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32705-109319

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 270
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-URI http://asc.fasb.org/topic&trid=2144680

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

+ Details

Comprehensive Text Block List

3 Months Ended

Mar. 31, 2022

Text Block [Abstract]

Comprehensive Income (Loss) Note

The changes in Accumulated other comprehensive income (“AOCI”) by component for the three months ended March 31, 2022 are as follows:


	Foreign Currency Translation		Pension		AOCI
Balance at December 31, 2021	$	4,294	$	(2,619)	$	1,675
Other comprehensive loss before classification, net of tax	(1,082)		—		(1,082)
Balance at March 31, 2022	$	3,212	$	(2,619)	$	593

Segment Reporting

3 Months Ended

Mar. 31, 2022

Segment Reporting [Abstract]

Segment Reporting Disclosure

The Company has five operating segments. The executive search business operates in the Americas, Europe (which includes Africa) and Asia Pacific (which includes the Middle East), and the Heidrick Consulting and On-Demand Talent businesses operate globally.

For segment purposes, reimbursements of out-of-pocket expenses classified as revenue and other operating income are reported separately and, therefore, are not included in the results of each segment. The Company believes that analyzing trends in revenue before reimbursements (net revenue), analyzing operating expenses as a percentage of net revenue, and analyzing operating income, more appropriately reflect its core operations.

Revenue and operating income by segment are as follows:


	Three Months Ended March 31,
	2022		2021
Revenue
Executive Search
Americas	$	162,553	$	116,506
Europe	49,745		37,643
Asia Pacific	30,251		25,469
Total Executive Search	242,549		179,618
On-Demand Talent	23,381		—
Heidrick Consulting	17,931		14,038
Revenue before reimbursements (net revenue)	283,861		193,656
Reimbursements	1,676		1,075
Total revenue	$	285,537	$	194,731


	Three Months Ended March 31,
	2022		2021
Operating income
Executive Search
Americas (1)	$	39,851	$	26,256
Europe (2)	5,403		4,540
Asia Pacific (3)	5,054		4,144
Total Executive Search	50,308		34,940
On-Demand Talent	(582)		—
Heidrick Consulting (4)	(2,084)		(4,710)
Total segment operating income	47,642		30,230
Research and Development	(4,402)		—
Global Operations Support (5)	(13,008)		(10,622)
Total operating income	$	30,232	$	19,608

(1) Includes restructuring charges of $3.7 million for the three months ended March 31, 2021.

(2) Includes restructuring reversals of $0.1 million for the three months ended March 31, 2021.

(3) Includes restructuring reversals of $0.1 million for the three months ended March 31, 2021.

(4) Includes restructuring charges of $0.3 million for the three months ended March 31, 2021.

(5) Includes restructuring charges of less than $0.1 million for the three months ended March 31, 2021.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8981-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8844-108599

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8657-108599

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-URI http://asc.fasb.org/topic&trid=2134510

+ Details

Guarantees	3 Months Ended
Guarantees	Mar. 31, 2022
Guarantees and Product Warranties [Abstract]
Guarantees	The Company has utilized letters of credit to support certain obligations, primarily for its office lease agreements. The letters of credit were made to secure the respective agreements and are for the terms of the agreements, which extend through 2033. For each letter of credit issued, the Company would have to use cash to fulfill the obligation if there is a default on a payment. The maximum amount of undiscounted payments the Company would be required to make in the event of default on all outstanding letters of credit is approximately $4.4 million as of March 31, 2022. The Company has not accrued for these arrangements as no event of default exists or is expected to exist.

Commitment and Contingencies	3 Months Ended
Commitment and Contingencies	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure	Litigation The Company has contingent liabilities from various pending claims and litigation matters arising in the ordinary course of the Company’s business, some of which involve claims for damages that are substantial in amount. Some of these matters are covered by insurance. Based upon information currently available, the Company believes the ultimate resolution of such claims and litigation will not have a material adverse effect on its financial condition, results of operations or liquidity.

Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2022
Subsequent Events [Abstract]
Subsequent Events	. Subsequent Event Open for potential subsequent events

Business Combinations	3 Months Ended
Business Combinations	Mar. 31, 2022
Business Combinations [Abstract]
Business Combination Disclosure

Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2022

Accounting Policies [Abstract]

Cost of Goods and Service

Cost of Services

Cost of services consists of third-party contractor costs related to the delivery of various services in the Company's On-Demand Talent and Heidrick Consulting operating segments.

Revenue from Contract with Customer

Revenue Recognition

See Note 3, Revenue.

Research and Development Expense, Policy

Research and developmentResearch and development consists of payroll, employee benefits, stock-based compensation, other employee expenses and third-party professional fees associated with new product development.

Earnings Per Share, Policy

Earnings per Common Share

The following table sets forth the computation of basic and diluted earnings per share:


	Three Months Ended March 31,
	2022		2021
Net income	$	18,467	$	14,832
Weighted average shares outstanding:
Basic	19,624		19,387
Effect of dilutive securities:
Restricted stock units	650		589
Performance stock units	237		195
Diluted	20,511		20,171
Basic earnings per share	$	0.94	$	0.77
Diluted earnings per share	$	0.90	$	0.74

Lessee, Leases

Leases

New Accounting Pronouncements, Policy

Recently Issued Financial Accounting Standards

Marketable Securities, Policy

Marketable Securities

The Company’s marketable securities consist of available-for-sale debt securities with original maturities exceeding three months.

- Definition

Disclosure of accounting policy for revenue from contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130561-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 20
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130566-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 18
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130563-203045

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI http://asc.fasb.org/topic&trid=49130388

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 20
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130566-203045

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 18
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130563-203045

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=123372394&loc=d3e18823-107790

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 20
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130566-203045

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130564-203045

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 20
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130566-203045

+ Details

Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2022

Accounting Policies [Abstract]

Schedule of Cash and Cash Equivalents


	March 31,				December 31,
	2022		2021		2021		2020
Cash and cash equivalents	$	267,986	$	184,055	$	545,225	$	316,473

Restricted cash included within other non-current assets	16		16		34		16
Total cash, cash equivalents and restricted cash	$	268,002	$	184,071	$	545,259	$	316,489

Restrictions on Cash and Cash Equivalents


	March 31,				December 31,
	2022		2021		2021		2020
Cash and cash equivalents	$	267,986	$	184,055	$	545,225	$	316,473

Restricted cash included within other non-current assets	16		16		34		16
Total cash, cash equivalents and restricted cash	$	268,002	$	184,071	$	545,259	$	316,489

Schedule of Earnings Per Share, Basic and Diluted

The following table sets forth the computation of basic and diluted earnings per share:


	Three Months Ended March 31,
	2022		2021
Net income	$	18,467	$	14,832
Weighted average shares outstanding:
Basic	19,624		19,387
Effect of dilutive securities:
Restricted stock units	650		589
Performance stock units	237		195
Diluted	20,511		20,171
Basic earnings per share	$	0.94	$	0.77
Diluted earnings per share	$	0.90	$	0.74

Revenue from Contract with Customer (Tables)

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Contract with Customer, Contract Asset, Contract Liability, and Receivable

The following table outlines the changes in the contract asset and liability balances from December 31, 2021 to March 31,

2022:


	March 31, 2022		December 31, 2021		Change
Contract assets
Unbilled receivables, net	$	19,348	$	17,947	$	1,401
Contract assets	21,725		18,995		2,730
Total contract assets	41,073		36,942		4,131

Contract liabilities
Deferred revenue	$	55,364	$	51,404	$	3,960

Credit Losses (Tables)

3 Months Ended

Mar. 31, 2022

Credit Loss [Abstract]

Accounts Receivable, Allowance for Credit Loss

The activity in the allowance for credit losses on the Company's trade receivables is as follows:


Balance at December 31, 2021	$	5,666
Provision for credit losses	2,154
Write-offs	(1,534)
Foreign currency translation	(8)
Balance at March 31, 2022	$	6,278

Debt Securities, Available-for-sale


	Less Than 12 Months				Balance Sheet Classification
Balance at March 31, 2022	Fair Value		Unrealized Loss		Cash and Cash Equivalents		Marketable Securities
U.S. Treasury securities	$	51,984	$	1	$	51,984	$	—

There were no investments with unrealized losses at December 31, 2021.

Property, Plant, and Equipment (Tables)

3 Months Ended

Mar. 31, 2022

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

The components of the Company’s property and equipment are as follows:


	March 31, 2022		December 31, 2021
Leasehold improvements	$	41,510	$	42,252
Office furniture, fixtures and equipment	14,515		14,933
Computer equipment and software	25,640		24,293
Property and equipment, gross	81,665		81,478
Accumulated depreciation	(54,503)		(54,393)
Property and equipment, net	$	27,162	$	27,085

Leases, Codification Topic 842 (Tables)

3 Months Ended

Mar. 31, 2022

Leases [Abstract]

Lease, Cost

Lease cost components included within General and Administrative Expenses in our Condensed Consolidated Statements of Comprehensive Income were as follows:


	Three Months Ended March 31,
	2022		2021
Operating lease cost	$	4,358	$	4,867
Variable lease cost	1,161		1,228
Total lease cost	$	5,519	$	6,095

Schedule of Cash Flow Information Related to Operating Leases

Supplemental cash flow information related to the Company's operating leases is as follows for the three months ended March 31:


	2022		2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	5,044	$	7,566
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$	281	$	791

Lessee Operating Lease Weighted Averages

The weighted average remaining lease term and weighted average discount rate for operating leases as of March 31, are as follows:


	2022		2021
Weighted Average Remaining Lease Term
Operating leases	6.3 years		5.9 years
Weighted Average Discount Rate
Operating leases	3.25	%	3.44	%

Lessee, Operating Lease, Liability, Maturity

The future maturities of the Company's operating lease liabilities as of March 31, 2022, for the years ended December 31 are as follows:


	Operating Lease Maturity
2022	$	13,339
2023	18,688
2024	16,649
2025	8,764
2026	7,377
Thereafter	25,484
Total lease payments	90,301
Less: Interest	(8,899)
Present value of lease liabilities	$	81,402

Fair Value Measures and Disclosures (Tables)

3 Months Ended

Mar. 31, 2022

Fair Value Disclosures [Abstract]

Unrealized Gain (Loss) on Investments

The Company's cash, cash equivalents, and marketable securities by significant investment category are as follows:



	Cash and Cash Equivalents
Balance at March 31, 2022
Cash	$	145,982

Level 1(1):
Money market funds	28,026
U.S. Treasury securities	93,978
Total Level 1	122,004




Total	$	267,986



	Cash and Cash Equivalents
Balance at December 31, 2021
Cash	$	265,233

Level 1(1):
Money market funds	80,798
U.S. Treasury securities	199,194
Total Level 1	279,992

Total	$	545,225

(1)Level 1 – Quoted prices in active markets for identical assets and liabilities.

Fair Value, Separate Account Investment


			Balance Sheet Classification
	Fair Value		Other Current Assets		Assets Designated for Retirement and Pension Plans		Investments		Other Current Liabilities		Retirement and Pension Plans
Balance at March 31, 2022

Measured on a recurring basis:
Level 1(1):
U.S. non-qualified deferred compensation plan	$	38,006	$	—	$	—	$	38,006	$	—	$	—

Level 2(2):
Retirement and pension plan assets	13,669		1,297		12,372		—		—		—
Pension benefit obligation	(19,066)		—		—		—		(1,297)		(17,769)
Total Level 2	(5,397)		1,297		12,372		—		(1,297)		(17,769)





Total	$	32,609	$	1,297	$	12,372	$	38,006	$	(1,297)	$	(17,769)


			Balance Sheet Classification
	Fair Value		Other Current Assets		Assets Designated for Retirement and Pension Plans		Investments		Other Current Liabilities		Retirement and Pension Plans
Balance at December 31, 2021

Measured on a recurring basis:
Level 1(1):
U.S. non-qualified deferred compensation plan	$	36,051	$	—	$	—	$	36,051	$	—	$	—

Level 2(2):
Retirement and pension plan assets	14,048		1,333		12,715		—		—		—
Pension benefit obligation	(19,594)		—		—		—		(1,333)		(18,261)
Total Level 2	(5,546)		1,333		12,715		—		(1,333)		(18,261)





Total	$	30,505	$	1,333	$	12,715	$	36,051	$	(1,333)	$	(18,261)

(1)Level 1 – Quoted prices in active markets for identical assets and liabilities.

Investments and Other Noncurrent Assets

The following table provides a reconciliation of the beginning and ending balance of Level 3 liabilities for the three months ended March 31, 2022:


	Earnout		Contingent Compensation
Balance at December 31, 2021	$	(35,654)	$	(4,141)

Earnout accretion	(271)		—
Compensation expense	—		(1,089)


Foreign currency translation	—		(760)

Balance at March 31, 2022	$	(35,925)	$	(5,990)

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation

The following table provides a reconciliation of the beginning and ending balance of Level 3 liabilities for the three months ended March 31, 2022:


	Earnout		Contingent Compensation
Balance at December 31, 2021	$	(35,654)	$	(4,141)

Earnout accretion	(271)		—
Compensation expense	—		(1,089)


Foreign currency translation	—		(760)

Balance at March 31, 2022	$	(35,925)	$	(5,990)

Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill

The Company's goodwill by segment is as follows:


	March 31, 2022		December 31, 2021
Executive Search
Americas	$	91,989	$	91,463
Europe	1,499		1,532

Total Executive Search	93,488		92,995
On-Demand Talent	45,529		45,529



Total goodwill	$	139,017	$	138,524

Schedule of Goodwill

Changes in the carrying amount of goodwill by segment for the three months ended March 31, 2022, are as follows:


	Executive Search						On-Demand Talent
	Americas		Europe		Asia Pacific				Total
Goodwill	$	91,463	$	26,007	$	8,495	$	45,529	$	171,494
Accumulated impairment losses	—		(24,475)		(8,495)		—		(32,970)
Balance at December 31, 2021	91,463		1,532		—		45,529		138,524




Foreign currency translation	526		(33)		—		—		493

Goodwill	91,989		25,974		8,495		45,529		171,987
Accumulated impairment losses	—		(24,475)		(8,495)		—		(32,970)
Balance at March 31, 2022	$	91,989	$	1,499	$	—	$	45,529	$	139,017

Schedule of Finite-Lived Intangible Assets

The Company’s other intangible assets, net by segment, are as follows:


	March 31, 2022		December 31, 2021
Executive Search
Americas	$	103	$	103
Europe	389		463
Asia Pacific	30		33
Total Executive Search	522		599



On-Demand Talent	7,940		8,570
Total other intangible assets, net	$	8,462	$	9,169

The carrying amount of amortizable intangible assets and the related accumulated amortization are as follows:


	Weighted Average Life (Years)	March 31, 2022						December 31, 2021
		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Client relationships	10.6	$	22,052	$	(16,691)	$	5,361	$	22,127	$	(16,495)	$	5,632
Trade name	3.1	2,474		(1,446)		1,028		2,441		(1,237)		1,204
Software	3.0	3,110		(1,037)		2,073		3,110		(777)		2,333
Total intangible assets	7.8	$	27,636	$	(19,174)	$	8,462	$	27,678	$	(18,509)	$	9,169

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The Company's estimated future amortization expense related to intangible assets as of March 31, 2022, for the years ended December 31 is as follows:


2022	$	2,113
2023	2,735
2024	1,155
2025	764
2026	527
Thereafter	1,168
Total	$	8,462

Deferred Costs, Capitalized, Prepaid, and Other Assets (Tables)

3 Months Ended

Mar. 31, 2022

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Other Current Assets

The components of other current assets are as follows:


	March 31, 2022		December 31, 2021
Contract assets	$	41,073	$	36,942
Other	6,073		4,507
Total other current assets	$	47,146	$	41,449

The components of other current liabilities are as follows:


	March 31, 2022		December 31, 2021
Earnout liability	$	26,949	$	—
Other	27,033		24,554
Total other current liabilities	$	53,982	$	24,554

Compensation Related Costs, Share Based Payments (Tables)

3 Months Ended

Mar. 31, 2022

Share-based Payment Arrangement [Abstract]

Share-based Payment Arrangement, Expensed and Capitalized, Amount

A summary of information with respect to stock-based compensation is as follows:


	Three Months Ended March 31,
	2022		2021
Salaries and benefits (1)	$	2,904	$	5,461

Income tax benefit related to stock-based compensation included in net income	790		1,453

Share-based Payment Arrangement, Restricted Stock Unit, Activity

Restricted stock unit activity for the three months ended March 31, 2022 is as follows:


	Number of Restricted Stock Units	Weighted- Average Grant-Date Fair Value
Outstanding on December 31, 2021	727,651	$	31.32
Granted	180,429	38.24
Vested and converted to common stock	(141,627)	32.26
Forfeited	(3,530)	37.26
Outstanding on March 31, 2022	762,923	$	32.76

Share-based Payment Arrangement, Performance Shares, Outstanding Activity


	Number of Performance Stock Units	Weighted- Average Grant-Date Fair Value
Outstanding on December 31, 2021	232,857	$	32.29
Granted	97,379	38.75
Vested and converted to common stock	(69,784)	40.77
Forfeited	—	—
Outstanding on March 31, 2022	260,452	$	32.43

Share-Based Compensation, Phantom Shares Award Outstanding Activity

Phantom stock unit activity for the three months ended March 31, 2022 is as follows:


			Number of Phantom Stock Units
Outstanding on December 31, 2021			348,863
Granted			—
Vested			—
Forfeited			—
Outstanding on March 31, 2022			348,863

Comprehensive Text Block List (Tables)

3 Months Ended

Mar. 31, 2022

Text Block [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

The changes in Accumulated other comprehensive income (“AOCI”) by component for the three months ended March 31, 2022 are as follows:


	Foreign Currency Translation		Pension		AOCI
Balance at December 31, 2021	$	4,294	$	(2,619)	$	1,675
Other comprehensive loss before classification, net of tax	(1,082)		—		(1,082)
Balance at March 31, 2022	$	3,212	$	(2,619)	$	593

Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2022

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Revenue and operating income by segment are as follows:


	Three Months Ended March 31,
	2022		2021
Revenue
Executive Search
Americas	$	162,553	$	116,506
Europe	49,745		37,643
Asia Pacific	30,251		25,469
Total Executive Search	242,549		179,618
On-Demand Talent	23,381		—
Heidrick Consulting	17,931		14,038
Revenue before reimbursements (net revenue)	283,861		193,656
Reimbursements	1,676		1,075
Total revenue	$	285,537	$	194,731


	Three Months Ended March 31,
	2022		2021
Operating income
Executive Search
Americas (1)	$	39,851	$	26,256
Europe (2)	5,403		4,540
Asia Pacific (3)	5,054		4,144
Total Executive Search	50,308		34,940
On-Demand Talent	(582)		—
Heidrick Consulting (4)	(2,084)		(4,710)
Total segment operating income	47,642		30,230
Research and Development	(4,402)		—
Global Operations Support (5)	(13,008)		(10,622)
Total operating income	$	30,232	$	19,608

(1) Includes restructuring charges of $3.7 million for the three months ended March 31, 2021.

(2) Includes restructuring reversals of $0.1 million for the three months ended March 31, 2021.

(3) Includes restructuring reversals of $0.1 million for the three months ended March 31, 2021.

(4) Includes restructuring charges of $0.3 million for the three months ended March 31, 2021.

(5) Includes restructuring charges of less than $0.1 million for the three months ended March 31, 2021.

Accounting Policies (Details) - USD ($)	3 Months Ended
Accounting Policies (Details) - USD ($)	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Cash and Cash Equivalents, at Carrying Value	$ 267,986,000	$ 184,055,000	$ 545,225,000	$ 316,473,000
Cash and Cash Equivalents [Line Items]
Net Income (Loss) Attributable to Parent	$ 18,467,000	$ 14,832,000
Weighted Average Number of Shares Outstanding, Basic	19,624,000	19,387,000
Weighted Average Number of Shares Outstanding, Diluted	20,511,000	20,171,000
Earnings Per Share, Basic	$ 0.94	$ 0.77
Earnings Per Share, Diluted	$ 0.90	$ 0.74
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 268,002,000	$ 184,071,000	545,259,000	316,489,000
Restricted Stock Units (RSUs)
Cash and Cash Equivalents [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	650,000	589,000
Performance Shares
Cash and Cash Equivalents [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	237,000	195,000
Other Noncurrent Assets [Member]
Accounting Policies [Abstract]
Restricted Cash	$ 16,000	$ 16,000	34,000	16,000
Cash and Cash Equivalents [Line Items]
Restricted Cash	$ 16,000	$ 16,000	$ 34,000	$ 16,000

Revenue from Contract with Customer (Details) - USD ($)	3 Months Ended
Revenue from Contract with Customer (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Unbilled Contracts Receivable	$ 19,348,000	$ 17,947,000
Contract with Customer, Asset, after Allowance for Credit Loss	41,073,000	36,942,000
Deferred Revenue, Current	55,364,000	51,404,000
Deferred Revenue, Revenue Recognized	51,100,000
Contract with Customer, Performance Obligation Satisfied in Previous Period	8,300,000
Increase (Decrease) in Unbilled Contracts Receivable	1,401,000
Contract with Customer, Asset, before Allowance for Credit Loss	21,725,000	$ 18,995,000
Increase (Decrease) In Contract With Customer, After Allowance For Credit Loss	2,730,000
Increase (Decrease) in Contract with Customer, Asset	4,131,000
Deferred Revenue, Period Increase (Decrease)	$ 3,960,000

Credit Losses (Details) - USD ($)	3 Months Ended
Credit Losses (Details) - USD ($)	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Credit Loss [Abstract]
Allowance for Doubtful Accounts, Premiums and Other Receivables	$ 6,278,000		$ 5,666,000
Accounts Receivable, Credit Loss Expense (Reversal)	2,154,000
Accounts Receivable, Allowance for Credit Loss, Writeoff	(1,534,000)
Debt Securities, Available-for-sale [Line Items]
Allowance for Doubtful Accounts, Premiums and Other Receivables	6,278,000		$ 5,666,000
Accounts Receivable, Credit Loss Expense (Reversal)	2,154,000
Accounts Receivable, Allowance for Credit Loss, Writeoff	1,534,000
Depreciation	1,800,000	$ 1,800,000
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Allowance For Doubtful Accounts, Foreign Currency Translation	(8,000)
US Treasury Securities [Member] \| In Loss Position for less than 12 Months
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	51,984,000
Debt Securities, Unrealized Gain (Loss)	1,000
Cash and Cash Equivalents \| US Treasury Securities [Member] \| In Loss Position for less than 12 Months
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	51,984,000
Investments \| US Treasury Securities [Member] \| In Loss Position for less than 12 Months
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	$ 0

Property, Plant, and Equipment (Details) - USD ($)	3 Months Ended
Property, Plant, and Equipment (Details) - USD ($)	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 81,665,000		$ 81,478,000
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(54,503,000)		(54,393,000)
Property, Plant and Equipment, Net	27,162,000		27,085,000
Depreciation	1,800,000	$ 1,800,000
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	41,510,000		42,252,000
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	14,515,000		14,933,000
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 25,640,000		$ 24,293,000

Leases, Codification Topic 842 (Details) - USD ($)	3 Months Ended		12 Months Ended	27 Months Ended
Leases, Codification Topic 842 (Details) - USD ($)	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 30, 2021
Leases [Abstract]
Operating Lease, Expense	$ 4,358,000	$ 4,867,000
Variable Lease, Cost	1,161,000	1,228,000
Lease, Cost	5,519,000	6,095,000
Operating Lease, Payments	5,044,000	7,566,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 281,000	$ 791,000
Operating Lease, Weighted Average Remaining Lease Term	6 years 3 months 18 days	5 years 10 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	3.25%	3.44%
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year	$ 13,339,000
Lessee, Operating Lease, Liability, to be Paid, Year Four	8,764,000
Lessee, Operating Lease, Liability, to be Paid, Year Five	7,377,000
Lessee, Operating Lease, Liability, to be Paid	90,301,000
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(8,899,000)
Operating Lease, Liability	81,402,000
Lessee, Lease, Description [Line Items]
Restructuring Charges	0	$ 3,861,000		$ 56,164,000
Lessee, Operating Lease, Liability, to be Paid, After Year Four	25,484,000
Early Surrender Agreement Payment			$ 11,700,000
Gain on Early Termination Agreement			5,700,000
Lease Liability Associated with Surrendered Office			$ 17,400,000
Lessee, Operating Lease, Liability, to be Paid, Year Two	18,688,000
Lessee, Operating Lease, Liability, to be Paid, Year Three	$ 16,649,000
Minimum [Member] \| Office Leases [Member]
Leases [Abstract]
Lessee, Operating Lease, Term of Contract	1 year
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	1 year
Minimum [Member] \| Equipment Lease [Member]
Leases [Abstract]
Lessee, Operating Lease, Term of Contract	1 year
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	1 year
Maximum [Member] \| Office Leases [Member]
Leases [Abstract]
Lessee, Operating Lease, Term of Contract	11 years 3 months 18 days
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	11 years 3 months 18 days
Maximum [Member] \| Equipment Lease [Member]
Leases [Abstract]
Lessee, Operating Lease, Term of Contract	4 years 8 months 12 days
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract	4 years 8 months 12 days

Fair Value Measures and Disclosures (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 267,986,000	$ 545,225,000	$ 184,055,000	$ 316,473,000
Fair Value, Net Asset (Liability)	32,609,000	30,505,000
Goodwill	139,017,000	138,524,000
Aggregate Cost Basis for Non-Qualified Deferred Compensation Plan	27,500,000	22,900,000
Goodwill, Gross	171,987,000	171,494,000
Goodwill, Impaired, Accumulated Impairment Loss	32,970,000	32,970,000
Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Net Asset (Liability)	38,006,000	36,051,000
Other Current Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Net Asset (Liability)	1,297,000	1,333,000
Assets Designated for Retirement and Pension Plans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Net Asset (Liability)	12,372,000	12,715,000
Other Current Liabilities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Net Asset (Liability)	(1,297,000)	(1,333,000)
Other Pension Plan [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Net Asset (Liability)	(17,769,000)	(18,261,000)
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, at Carrying Value	122,004,000	279,992,000
Deferred Compensation Plan Assets	38,006,000	36,051,000
Fair Value, Inputs, Level 1 [Member] \| Investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred Compensation Plan Assets	38,006,000	36,051,000
Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Defined Benefit Plan, Plan Assets, Amount	13,669,000	14,048,000
Defined Benefit Plan, Benefit Obligation	(19,066,000)	(19,594,000)
Fair Value, Net Asset (Liability)	(5,397,000)	(5,546,000)
Fair Value, Inputs, Level 2 [Member] \| Other Current Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Defined Benefit Plan, Plan Assets, Amount	1,297,000	1,333,000
Fair Value, Net Asset (Liability)	1,297,000	1,333,000
Fair Value, Inputs, Level 2 [Member] \| Assets Designated for Retirement and Pension Plans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Defined Benefit Plan, Plan Assets, Amount	12,372,000	12,715,000
Fair Value, Net Asset (Liability)	12,372,000	12,715,000
Fair Value, Inputs, Level 2 [Member] \| Other Current Liabilities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Defined Benefit Plan, Benefit Obligation	(1,297,000)	(1,333,000)
Fair Value, Net Asset (Liability)	(1,297,000)	(1,333,000)
Fair Value, Inputs, Level 2 [Member] \| Other Pension Plan [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Defined Benefit Plan, Benefit Obligation	(17,769,000)	(18,261,000)
Fair Value, Net Asset (Liability)	(17,769,000)	(18,261,000)
Fair Value, Inputs, Level 3 \| Acqusition Earnout Accruals
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Acquisition Earnout Accruals	(35,925,000)	(35,654,000)
Fair Value, Inputs, Level 3 \| Acqusition Earnout Accruals \| Other Current Liabilities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Acquisition Earnout Accruals	26,949,000	0
Fair Value, Inputs, Level 3 \| Acqusition Earnout Accruals \| Other Liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Acquisition Earnout Accruals	9,000,000		$ 35,700,000
Cash [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, at Carrying Value	145,982,000	265,233,000
Money Market Funds [Member] \| Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, at Carrying Value	28,026,000	80,798,000
US Treasury Securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, at Carrying Value	$ 93,978,000	$ 199,194,000

Fair Value Measures and Disclosures Level 3 Liabilities (Details) - USD ($)	3 Months Ended		27 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 30, 2021	Dec. 31, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Goodwill, Beginning Balance	$ 138,524,000
Restructuring Charges	0	$ 3,861,000	$ 56,164,000
Goodwill, Ending Balance	139,017,000
Fair Value, Inputs, Level 3 \| Contingent Compensation
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Deferred Compensation Arrangement with Individual, Compensation Expense	(1,089,000)
Acquisition Earnout Accruals	(5,990,000)			$ (4,141,000)
Fair Value, Inputs, Level 3 \| Acqusition Earnout Accruals
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Earnout Accretion Fair Value Disclosure	(271,000)
Acquisition Earnout Accruals	$ (35,925,000)			$ (35,654,000)

Fair Value Measures and Disclosures Level 3 (Details) - Fair Value, Inputs, Level 3	3 Months Ended
	Mar. 31, 2022 USD ($)
Acqusition Earnout Accruals
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition Earnout Accruals	$ (35,654,000)
Earnout Accretion Fair Value Disclosure	(271,000)
Acquisition Earnout Accruals	(35,925,000)
Contingent Compensation
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Acquisition Earnout Accruals	(4,141,000)
Fair Value Measurement With Unobservable Inputs, Recurring Basis Liability, Foreign Currency Translation	(760,000)
Acquisition Earnout Accruals	$ (5,990,000)

Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Goodwill	$ 139,017,000	$ 138,524,000
Goodwill, Foreign Currency Translation Gain (Loss)	493,000
Goodwill, Gross	171,987,000	171,494,000
Goodwill, Impaired, Accumulated Impairment Loss	(32,970,000)	(32,970,000)
Finite-Lived Intangible Assets, Net	$ 8,462,000	9,169,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years 9 months 18 days
Customer Relationships [Member]
Goodwill [Line Items]
Finite-Lived Intangible Assets, Net	$ 5,361,000	5,632,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years 7 months 6 days
Executive Search Member
Goodwill [Line Items]
Goodwill	$ 93,488,000	92,995,000
Finite-Lived Intangible Assets, Net	522,000	599,000
Executive Search Member \| Americas
Goodwill [Line Items]
Goodwill	91,989,000	91,463,000
Goodwill, Foreign Currency Translation Gain (Loss)	526,000
Goodwill, Gross	91,989,000	91,463,000
Goodwill, Impaired, Accumulated Impairment Loss	0	0
Finite-Lived Intangible Assets, Net	103,000	103,000
Executive Search Member \| Europe
Goodwill [Line Items]
Goodwill	1,499,000	1,532,000
Goodwill, Foreign Currency Translation Gain (Loss)	(33,000)
Goodwill, Gross	25,974,000	26,007,000
Goodwill, Impaired, Accumulated Impairment Loss	(24,475,000)	(24,475,000)
Finite-Lived Intangible Assets, Net	389,000	463,000
Executive Search Member \| Asia Pacific
Goodwill [Line Items]
Goodwill	0	0
Goodwill, Foreign Currency Translation Gain (Loss)	0
Goodwill, Gross	8,495,000	8,495,000
Goodwill, Impaired, Accumulated Impairment Loss	(8,495,000)	(8,495,000)
Finite-Lived Intangible Assets, Net	30,000	33,000
On-Demand Talent
Goodwill [Line Items]
Goodwill	45,529,000	45,529,000
Finite-Lived Intangible Assets, Net	$ 7,940,000	$ 8,570,000

Goodwill and Other Intangible Assets - Other Intangible Assets, net (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year	$ 2,113,000
Finite-Lived Intangible Asset, Expected Amortization, Year Two	2,735,000
Finite-Lived Intangible Asset, Expected Amortization, Year Three	1,155,000
Finite-Lived Intangible Asset, Expected Amortization, Year Four	764,000
Finite-Lived Intangible Asset, Expected Amortization, Year Five	527,000
Finite-Lived Intangible Asset, Expected Amortization, after Year Five	1,168,000
Finite-Lived Intangible Assets, Net	$ 8,462,000		$ 9,169,000
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years 9 months 18 days
Finite-Lived Intangible Assets, Gross	$ 27,636,000		27,678,000
Finite-Lived Intangible Assets, Accumulated Amortization	(19,174,000)		(18,509,000)
Finite-Lived Intangible Assets, Net	8,462,000		9,169,000
Amortization of Intangible Assets	800,000	$ 200,000
Executive Search Member
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Net	522,000		599,000
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net	522,000		599,000
Executive Search Member \| Americas
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Net	103,000		103,000
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net	103,000		103,000
Executive Search Member \| Asia Pacific
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Net	30,000		33,000
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net	30,000		33,000
Executive Search Member \| Europe
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Net	389,000		463,000
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net	389,000		463,000
On-Demand Talent
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Net	7,940,000		8,570,000
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net	7,940,000		8,570,000
Customer Relationships [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Net	$ 5,361,000		5,632,000
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years 7 months 6 days
Finite-Lived Intangible Assets, Gross	$ 22,052,000		22,127,000
Finite-Lived Intangible Assets, Accumulated Amortization	(16,691,000)		(16,495,000)
Finite-Lived Intangible Assets, Net	5,361,000		5,632,000
Trade Names [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Net	$ 1,028,000		1,204,000
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years 1 month 6 days
Finite-Lived Intangible Assets, Gross	$ 2,474,000		2,441,000
Finite-Lived Intangible Assets, Accumulated Amortization	(1,446,000)		(1,237,000)
Finite-Lived Intangible Assets, Net	1,028,000		1,204,000
Software and Software Development Costs
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Net	$ 2,073,000		2,333,000
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years
Finite-Lived Intangible Assets, Gross	$ 3,110,000		3,110,000
Finite-Lived Intangible Assets, Accumulated Amortization	(1,037,000)		(777,000)
Finite-Lived Intangible Assets, Net	$ 2,073,000		$ 2,333,000

Deferred Costs, Capitalized, Prepaid, and Other Assets (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Unbilled Receivables, Current	$ 41,073,000	$ 36,942,000
Other Assets, Miscellaneous, Current	6,073,000	4,507,000
Other Assets, Current	47,146,000	41,449,000
Document Information [Line Items]
Other Sundry Liabilities	27,033,000	24,554,000
Other Liabilities, Current	53,982,000	24,554,000
Acqusition Earnout Accruals \| Fair Value, Inputs, Level 3
Document Information [Line Items]
Acquisition Earnout Accruals	(35,925,000)	(35,654,000)
Acqusition Earnout Accruals \| Fair Value, Inputs, Level 3 \| Other Current Liabilities [Member]
Document Information [Line Items]
Acquisition Earnout Accruals	$ 26,949,000	$ 0

Debt (Details) - USD ($)	3 Months Ended
Debt (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021	Jul. 13, 2021	Oct. 26, 2018
Debt Disclosure [Abstract]
Line of Credit Facility, Maximum Borrowing Capacity			$ 200,000,000	$ 175,000,000
Long-term Line of Credit	$ 0	$ 0
Sub Limit for Letters of Credit	25,000,000
Line of Credit Facility Expansion Borrowing Capacity	75,000,000
Swingline Loan Sub Limit	$ 10,000,000

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References + Details

Compensation Related Costs, Share Based Payments (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	447,946
Share-based Payment Arrangement, Expense, Tax Benefit	$ 790,000	$ 1,453,000
share-based compensation arrangement by share-based payment award, shares issued to date	3,650,461
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Forfeited to Date	748,407
Labor and Related Expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expensed and Capitalized, Amount	$ 2,904,000	$ 5,461,000
Restricted Stock Units (RSUs)
Share-based Payment Arrangement [Abstract]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 12,300,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	2 years 7 months 6 days
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 12,300,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	2 years 7 months 6 days
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	762,923		727,651
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 32.76		$ 31.32
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	180,429
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	(141,627)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	(3,530)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 38.24
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	32.26
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 37.26
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	762,923		727,651
Performance Shares
Share-based Payment Arrangement [Abstract]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 7,500,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	2 years 1 month 6 days
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 7,500,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	2 years 1 month 6 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		260,452	232,857
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value		$ 32.43	$ 32.29
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	97,379
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	(69,784)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 38.75
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	40.77
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		260,452	232,857
Performance Shares \| Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Performance Shares \| Executive Officer \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	0.00%
Performance Shares \| Executive Officer \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	200.00%
Phantom Share Units (PSUs) [Member]
Share-based Payment Arrangement [Abstract]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 3,100,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	2 years 6 months
Share-based Payment Arrangement, Expense	$ (800,000)	$ 2,500,000
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	(800,000)	$ 2,500,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 3,100,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	2 years 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		348,863	348,863
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		348,863	348,863
Special Restricted Stock Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years

Restructuring and Related Activities - Restructuring Charges by Segment and Type (Details) - USD ($)	3 Months Ended		27 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 30, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 0	$ 3,861,000	$ 56,164,000
Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		17,000	3,795,000
Heidrick Consulting
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(300,000)
Heidrick Consulting \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		322,000	5,012,000
Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(100,000)
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		194,000	32,597,000
Employee Severance \| Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		7,000	1,416,000
Employee Severance \| Heidrick Consulting \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(44,000)	2,589,000
Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(4,042,000)	22,872,000
Facility Closing \| Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0	1,819,000
Facility Closing \| Heidrick Consulting \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		366,000	2,352,000
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(13,000)	695,000
Other Restructuring \| Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		10,000	560,000
Other Restructuring \| Heidrick Consulting \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0	71,000
Americas
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		3,700,000
Americas \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		3,698,000	34,361,000
Americas \| Employee Severance \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		19,000	16,226,000
Americas \| Facility Closing \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		3,676,000	18,101,000
Americas \| Other Restructuring \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		3,000	34,000
Europe
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0.1
Europe \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(52,000)	8,506,000
Europe \| Employee Severance \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(52,000)	8,256,000
Europe \| Facility Closing \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0	226,000
Europe \| Other Restructuring \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0	24,000
Asia Pacific
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0.1
Asia Pacific \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(124,000)	4,490,000
Asia Pacific \| Employee Severance \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(124,000)	4,110,000
Asia Pacific \| Facility Closing \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0	374,000
Asia Pacific \| Other Restructuring \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		$ 0	$ 6,000

Restructuring and Related Activities - Restructuring Charges by Segment and Type Incurred to Date(Details) - USD ($)	3 Months Ended		27 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 30, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 0	$ 3,861,000	$ 56,164,000
Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		17,000	3,795,000
Heidrick Consulting
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(300,000)
Heidrick Consulting \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		322,000	5,012,000
Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(100,000)
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		194,000	32,597,000
Employee Severance \| Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		7,000	1,416,000
Employee Severance \| Heidrick Consulting \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(44,000)	2,589,000
Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(4,042,000)	22,872,000
Facility Closing \| Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0	1,819,000
Facility Closing \| Heidrick Consulting \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		366,000	2,352,000
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(13,000)	695,000
Other Restructuring \| Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		10,000	560,000
Other Restructuring \| Heidrick Consulting \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0	71,000
Americas
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		3,700,000
Americas \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		3,698,000	34,361,000
Americas \| Employee Severance \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		19,000	16,226,000
Americas \| Facility Closing \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		3,676,000	18,101,000
Americas \| Other Restructuring \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		3,000	34,000
Europe
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0.1
Europe \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(52,000)	8,506,000
Europe \| Employee Severance \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(52,000)	8,256,000
Europe \| Facility Closing \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0	226,000
Europe \| Other Restructuring \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0	24,000
Asia Pacific
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0.1
Asia Pacific \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(124,000)	4,490,000
Asia Pacific \| Employee Severance \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(124,000)	4,110,000
Asia Pacific \| Facility Closing \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0	374,000
Asia Pacific \| Other Restructuring \| Executive Search Member \| Operating Segments
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		$ 0	$ 6,000

Restructuring and Related Activities - Changes to the Accrual (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 3,499	$ 8,394
Payments for Restructuring	(4,843)
Restructuring Reserve, Settled without Cash	(34)
Restructuring Reserve, Foreign Currency Translation Gain (Loss)	(18)
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	3,499	8,394
Payments for Restructuring	(4,843)
Restructuring Reserve, Settled without Cash	34
Restructuring Reserve, Foreign Currency Translation Gain (Loss)	(18)
Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0	0
Payments for Restructuring	0
Restructuring Reserve, Settled without Cash
Restructuring Reserve, Foreign Currency Translation Gain (Loss)	0
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0	$ 0
Payments for Restructuring	0
Restructuring Reserve, Settled without Cash
Restructuring Reserve, Foreign Currency Translation Gain (Loss)	$ 0

Restructuring and Related Activities (Details) - USD ($)	3 Months Ended		12 Months Ended	27 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 30, 2021
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 3,499,000		$ 8,394,000
Restructuring Charges	0	$ 3,861,000		$ 56,164,000
Payments for Restructuring	(4,843,000)
Restructuring Reserve, Settled without Cash	(34,000)
Restructuring Reserve, Foreign Currency Translation Gain (Loss)	(18,000)
Early Surrender Agreement Payment			11,700,000
Lease Liability Associated with Surrendered Office			17,400,000
Gain on Early Termination Agreement			5,700,000
Early Surrender Agreement Payment			11,700,000
Lease Liability Associated with Surrendered Office			17,400,000
Gain on Early Termination Agreement			5,700,000
Americas
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		3,700,000
Europe
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0.1
Asia Pacific
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		0.1
Corporate, Non-Segment
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(100,000)
Heidrick Consulting
Restructuring Cost and Reserve [Line Items]
Restructuring Charges		(300,000)
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	3,499,000		8,394,000
Restructuring Charges		194,000		32,597,000
Payments for Restructuring	(4,843,000)
Restructuring Reserve, Settled without Cash	34,000
Restructuring Reserve, Foreign Currency Translation Gain (Loss)	(18,000)
Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0		0
Restructuring Charges		(4,042,000)		22,872,000
Payments for Restructuring	0
Restructuring Reserve, Settled without Cash
Restructuring Reserve, Foreign Currency Translation Gain (Loss)	0
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0		$ 0
Restructuring Charges		$ (13,000)		$ 695,000
Payments for Restructuring	0
Restructuring Reserve, Settled without Cash
Restructuring Reserve, Foreign Currency Translation Gain (Loss)	$ 0

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Percent	33.70%	34.90%
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 27,871	$ 22,772
Income Tax Expense (Benefit)	$ 9,404	$ 7,940

- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 20
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=123384075&loc=d3e41242-110953

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(10))
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(8))
-URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 235
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-05(b)(2))
-URI http://asc.fasb.org/extlink&oid=120399901&loc=d3e537907-122884

Reference 9: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(15))
-URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

+ Details

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details

Comprehensive Text Block List (Details) - USD ($)	3 Months Ended		27 Months Ended
Comprehensive Text Block List (Details) - USD ($)	Mar. 31, 2022	Mar. 31, 2021	Dec. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ 593,000			$ 1,675,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	350,765,000	$ 278,570,000		336,020,000	$ 267,602,000
Restructuring Charges	0	(3,861,000)	$ (56,164,000)
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	3,212,000			4,294,000
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	(1,082,000)
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(2,619,000)			(2,619,000)
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	593,000	$ 2,724,000		$ 1,675,000	$ 3,417,000
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	$ (1,082,000)

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References + Details

- Definition

Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 45
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=124436220&loc=d3e21930-107793

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 45
-Paragraph 23
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=124436220&loc=d3e21914-107793

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=124431687&loc=d3e22644-107794

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=124431353&loc=SL124442411-227067

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 10
-Section 65
-Paragraph 4
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 105
-SubTopic 10
-Section 65
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 105
-SubTopic 10
-Section 65
-Paragraph 6
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695

Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=123454820&loc=SL4568740-111683

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 40
-Section 65
-Paragraph 1
-Subparagraph (e)(3)
-URI http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011

Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 28
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 45
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=124436220&loc=d3e21711-107793

Reference 13: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

Reference 14: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 65
-Paragraph 8
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32136-110900

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 65
-Paragraph 8
-Subparagraph (d)(3)
-URI http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 65
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 65
-Paragraph 15
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333

Reference 21: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4I
-URI http://asc.fasb.org/extlink&oid=120409616&loc=SL4590271-111686

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 40
-Section 65
-Paragraph 2
-Subparagraph (f)(1)
-URI http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900

Reference 24: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=123454820&loc=SL4568447-111683

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 65
-Paragraph 15
-Subparagraph (f)(1)
-URI http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 65
-Paragraph 15
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 848
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
-Publisher FASB
-Subparagraph (a)(3)(iii)(03)

+ Details

Segment Reporting (Details) - USD ($)	3 Months Ended		27 Months Ended
Segment Reporting (Details) - USD ($)	Mar. 31, 2022	Mar. 31, 2021	Dec. 30, 2021
Revenues [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 283,861,000	$ 193,656,000
Revenues	285,537,000	194,731,000
Operating Income (Loss) [Abstract]
Operating Income (Loss)	30,232,000	19,608,000
Research and Development Expense	4,402,000	0
Restructuring Charges	0	(3,861,000)	$ (56,164,000)
Reimbursements
Revenues [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	1,676,000	1,075,000
Americas
Operating Income (Loss) [Abstract]
Restructuring Charges		(3,700,000)
Europe
Operating Income (Loss) [Abstract]
Restructuring Charges		(0.1)
Asia Pacific
Operating Income (Loss) [Abstract]
Restructuring Charges		(0.1)
Heidrick Consulting
Operating Income (Loss) [Abstract]
Restructuring Charges		300,000
Corporate, Non-Segment
Operating Income (Loss) [Abstract]
Restructuring Charges		100,000
Operating Segments
Operating Income (Loss) [Abstract]
Operating Income (Loss)	47,642,000	30,230,000
Operating Segments \| Executive Search Member
Revenues [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	242,549,000	179,618,000
Operating Income (Loss) [Abstract]
Operating Income (Loss)	50,308,000	34,940,000
Operating Segments \| Executive Search Member \| Americas
Revenues [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	162,553,000	116,506,000
Operating Income (Loss) [Abstract]
Operating Income (Loss)	39,851,000	26,256,000
Restructuring Charges		(3,698,000)	(34,361,000)
Operating Segments \| Executive Search Member \| Europe
Revenues [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	49,745,000	37,643,000
Operating Income (Loss) [Abstract]
Operating Income (Loss)	5,403,000	4,540,000
Restructuring Charges		52,000	(8,506,000)
Operating Segments \| Executive Search Member \| Asia Pacific
Revenues [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	30,251,000	25,469,000
Operating Income (Loss) [Abstract]
Operating Income (Loss)	5,054,000	4,144,000
Restructuring Charges		124,000	(4,490,000)
Operating Segments \| Heidrick Consulting
Revenues [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	17,931,000	14,038,000
Operating Income (Loss) [Abstract]
Operating Income (Loss)	(2,084,000)	(4,710,000)
Restructuring Charges		(322,000)	(5,012,000)
Operating Segments \| On-Demand Talent
Revenues [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	23,381,000
Operating Income (Loss) [Abstract]
Operating Income (Loss)	(582,000)
Corporate, Non-Segment
Operating Income (Loss) [Abstract]
Operating Income (Loss)	(13,008,000)	(10,622,000)
Restructuring Charges		(17,000)	$ (3,795,000)
Segment Reconciling Items
Operating Income (Loss) [Abstract]
Operating Income (Loss)	$ (4,402,000)	$ 0

Guarantees (Details)	Mar. 31, 2022 USD ($)
Guarantees and Product Warranties [Abstract]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 4,400,000

Subsequent Events (Details) - USD ($)	3 Months Ended
Subsequent Events (Details) - USD ($)	Mar. 31, 2022	Jul. 13, 2021	Oct. 26, 2018
Subsequent Event [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 200,000,000	$ 175,000,000
Sub Limit for Letters of Credit	$ 25,000,000
Swingline Loan Sub Limit	10,000,000
Line of Credit Facility Expansion Borrowing Capacity	$ 75,000,000

Business Combinations (Details) - USD ($)	3 Months Ended
Business Combinations (Details) - USD ($)	Mar. 31, 2022	Mar. 31, 2021
Business Combinations [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 283,861,000	$ 193,656,000
Operating Income (Loss)	30,232,000	19,608,000
Business Acquisition [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	283,861,000	193,656,000
Operating Income (Loss)	$ 30,232,000	$ 19,608,000

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 40
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130543-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

+ Details