Robert Half International (RHI) 10-K 10 Feb 23 2022 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2022	Jan. 31, 2023	Jun. 30, 2022
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	1-10427
Entity Registrant Name	ROBERT HALF INTERNATIONAL INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	94-1648752
Entity Address, Address Line One	2884 Sand Hill Road
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	Menlo Park
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94025
City Area Code	650
Local Phone Number	234-6000
Title of 12(b) Security	Common Stock, Par Value $.001 per Share
Trading Symbol	RHI
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 8,012,399,320
Entity Common Stock, Shares Outstanding		107,698,497
Documents Incorporated by Reference	Portions of the registrant’s Definitive Proxy Statement to be mailed to stockholders in connection with the registrant’s annual meeting of stockholders, scheduled to be held in May 2023, are incorporated by reference in Part III of this report. Except as expressly incorporated by reference, the registrant’s Proxy Statement shall not be deemed to be part of this report.
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Entity Central Index Key	0000315213

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2022
Audit Information [Abstract]
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	San Francisco, California
Auditor Firm ID	238

Consolidated Statements of Fina

Consolidated Statements of Financial Position - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
ASSETS
Cash and cash equivalents	$ 658,626	$ 619,001
Accounts receivable, net	1,018,287	984,691
Employee deferred compensation trust assets	432,734	494,991
Other current assets	175,465	169,864
Total current assets	2,285,112	2,268,547
Property and equipment, net	109,687	93,403
Right-of-use assets	201,998	228,793
Other intangible assets, net	5,317	3,334
Goodwill	237,810	222,855
Noncurrent deferred income taxes	124,564	135,427
Total assets	2,964,488	2,952,359
LIABILITIES
Accounts payable and accrued expenses	168,163	183,796
Accrued payroll and benefit costs	472,310	540,183
Employee deferred compensation plan obligations	474,111	535,276
Income taxes payable	15,535	15,631
Current operating lease liabilities	86,083	83,787
Total current liabilities	1,216,202	1,358,673
Noncurrent operating lease liabilities	151,768	181,291
Other liabilities	27,960	31,344
Total liabilities	1,395,930	1,571,308
Commitments and Contingencies (Note K)
STOCKHOLDERS’ EQUITY
Preferred stock, $0.001 par value; authorized 5,000,000 shares; none issued	0	0
Common stock, $0.001 par value; authorized 260,000,000 shares; issued and outstanding 107,698,498 and 110,685,989 shares	108	111
Additional paid-in capital	1,293,565	1,235,903
Accumulated other comprehensive income (loss)	(43,623)	(22,622)
Retained earnings	318,508	167,659
Total stockholders’ equity	1,568,558	1,381,051
Total liabilities and stockholders’ equity	$ 2,964,488	$ 2,952,359

Consolidated Statements of Fi_2

Consolidated Statements of Financial Position (Parenthetical) - $ / shares	Dec. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Preferred stock, par value (usd per share)	$ 0.001	$ 0.001
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Preferred stock, issued (in shares)	0	0
Common stock, par value (usd per share)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	260,000,000	260,000,000
Common stock, issued (in shares)	107,698,498	110,685,989
Common stock, outstanding (in shares)	107,698,498	110,685,989

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Service revenues	$ 7,238,142	$ 6,461,444	$ 5,109,000
Costs of services	4,144,093	3,765,416	3,096,389
Gross margin	3,094,049	2,696,028	2,012,611
Selling, general and administrative expenses	2,117,296	1,951,282	1,666,041
(Income) loss from investments held in employee deferred compensation trusts	86,139	(61,078)	(75,188)
Amortization of intangible assets	1,667	2,241	1,219
Interest income, net	(8,008)	(197)	(1,343)
Income before income taxes	896,955	803,780	421,882
Provision for income taxes	239,036	205,154	115,606
Net income	$ 657,919	$ 598,626	$ 306,276
Net income per share:
Basic (usd per share)	$ 6.08	$ 5.42	$ 2.72
Diluted (usd per share)	$ 6.03	$ 5.36	$ 2.70
Shares:
Basic (in shares)	108,214	110,482	112,729
Diluted (in shares)	109,171	111,718	113,318
Dividends declared per share (usd per share)	$ 1.72	$ 1.52	$ 1.36

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
COMPREHENSIVE INCOME (LOSS):
Net income	$ 657,919	$ 598,626	$ 306,276
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	(25,274)	(18,702)	18,973
Foreign defined benefit plan adjustments, net of tax	4,273	812	(3,719)
Total other comprehensive income (loss)	(21,001)	(17,890)	15,254
Total comprehensive income (loss)	$ 636,918	$ 580,736	$ 321,530

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment
Balance at beginning of period, (in shares) at Dec. 31, 2019			115,120,000
Balance at beginning of period at Dec. 31, 2019	$ 1,143,683	$ (558)	$ 115	$ 1,127,487	$ (19,986)	$ 36,067	$ (558)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	306,276					306,276
Other comprehensive income (loss)	15,254				15,254
Dividends declared	(156,045)					(156,045)
Net issuances of restricted stock (in shares)			879,000
Net issuances of restricted stock	0		$ 1	(1)
Stock-based compensation expense	52,486			52,486
Repurchases of common stock, (in shares)			(2,871,000)
Repurchases of common stock	(155,807)		$ (3)			(155,804)
Balance at end of period, (in shares) at Dec. 31, 2020			113,128,000
Balance at end of period at Dec. 31, 2020	1,205,289		$ 113	1,179,972	(4,732)	29,936
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	598,626					598,626
Other comprehensive income (loss)	(17,890)				(17,890)
Dividends declared	(170,679)					(170,679)
Net issuances of restricted stock (in shares)			701,000
Net issuances of restricted stock	0		$ 1	(1)
Stock-based compensation expense	55,932			55,932
Repurchases of common stock, (in shares)			(3,143,000)
Repurchases of common stock	$ (290,227)		$ (3)			(290,224)
Balance at end of period, (in shares) at Dec. 31, 2021	110,685,989		110,686,000
Balance at end of period at Dec. 31, 2021	$ 1,381,051		$ 111	1,235,903	(22,622)	167,659
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	657,919					657,919
Other comprehensive income (loss)	(21,001)				(21,001)
Dividends declared	(189,266)					(189,266)
Net issuances of restricted stock (in shares)			693,000
Net issuances of restricted stock	0		$ 1	(1)
Stock-based compensation expense	57,663			57,663
Repurchases of common stock, (in shares)			(3,681,000)
Repurchases of common stock	$ (317,808)		$ (4)			(317,804)
Balance at end of period, (in shares) at Dec. 31, 2022	107,698,498		107,698,000
Balance at end of period at Dec. 31, 2022	$ 1,568,558		$ 108	$ 1,293,565	$ (43,623)	$ 318,508

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Stockholders' Equity [Abstract]
Cash dividends, per share (usd per share)	$ 1.72	$ 1.52	$ 1.36

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 657,919	$ 598,626	$ 306,276
Adjustments to reconcile net income to net cash provided by operating activities:
Allowance for credit losses	8,771	9,464	4,200
Depreciation	47,398	52,210	62,281
Amortization of cloud computing implementation costs	28,925	28,023	18,399
Amortization of intangible assets	1,667	2,241	1,219
Realized and unrealized (gains) losses from investments held in employee deferred compensation trusts	98,776	(37,359)	(66,866)
Stock-based compensation	57,663	55,932	52,486
Deferred income taxes	10,810	(21,133)	(13,146)
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(65,626)	(292,628)	127,740
Capitalized cloud computing implementation costs	(40,357)	(31,240)	(33,178)
Accounts payable and accrued expenses	3,735	52,610	1,098
Accrued payroll and benefit cost	(58,067)	99,005	119,231
Employee deferred compensation plan obligations	(61,165)	100,058	13,923
Income taxes payable	2,596	3,587	182
Other assets and liabilities, net	(9,295)	(16,260)	2,683
Net cash flows provided by operating activities	683,750	603,136	596,528
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(61,120)	(36,611)	(33,377)
Investments in employee deferred compensation trusts	(67,388)	(85,432)	(64,351)
Proceeds from employee deferred compensation trust redemptions	30,869	34,434	123,025
Payments for acquisitions, net of cash acquired	(18,984)	0	(15,836)
Net cash flows (used in) provided by investing activities	(116,623)	(87,609)	9,461
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of notes payable	0	(239)	(218)
Repurchases of common stock	(319,897)	(287,738)	(159,172)
Dividends paid	(189,286)	(170,612)	(155,935)
Net cash flows used in financing activities	(509,183)	(458,589)	(315,325)
Effect of exchange rate fluctuations	(18,319)	(12,363)	13,284
Change in cash and cash equivalents	39,625	44,575	303,948
Cash and cash equivalents at beginning of period	619,001	574,426	270,478
Cash and cash equivalents at end of period	658,626	619,001	574,426
Cash paid during the year for:
Interest	368	548	577
Income taxes, net of refunds	217,927	219,726	128,321
Non-cash items:
Stock repurchases awaiting settlement	3,504	5,593	3,104
Fund exchanges within employee deferred compensation trusts	103,003	116,815	208,055
Contingent consideration related to acquisition	$ 1,300	$ 0	$ 0

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note A—Summary of Significant Accounting Policies Nature of Operations. Robert Half International Inc. (the “Company”) is a specialized talent solutions and business consulting firm that connects opportunities at great companies with highly skilled job seekers. Robert Half ® offers contract talent solutions and permanent placement talent solutions for finance and accounting, technology, marketing and creative, legal, administrative, and customer support roles. Robert Half is also the parent company of Protiviti ® , a global consulting firm that provides internal audit, risk, business, and technology consulting solutions. During 2022 the Company unified its family of Robert Half brands to focus on its key brand, Robert Half. This simplifies the Company’s go-to-market brand structure for clients and candidates, provides leverage for greater brand awareness, and allows future flexibility to expand the Company’s existing functional specializations. In connection with this process, the Company’s current financial statement disclosures reflect new names for its reportable segments, including contract talent solutions (formerly temporary and consultant staffing), permanent placement talent solutions (formerly permanent placement staffing) and Protiviti (formerly risk consulting and internal audit services). What was previously referred to as staffing operations is now referred to as talent solutions. The presentation of contract talent solutions includes functional specializations rather than the previously branded divisions. The functional specializations are: finance and accounting, which combines the former Accountemps ® and Robert Half ® Management Resources divisions; administrative and customer support, which consists of the former OfficeTeam ® ; and technology, which includes the former Robert Half ® Technology . The Company operates in North America, South America, Europe, Asia, and Australia. The Company is a Delaware corporation. Basis of Presentation. The Consolidated Financial Statements (“Financial Statements”) of the Company are prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”) and the rules of the Securities and Exchange Commission (“SEC”). Certain reclassifications have been made to prior years’ consolidated financial statements to conform to the 2022 presentation. Principles of Consolidation. The Financial Statements include the accounts of the Company and its subsidiaries, all of which are wholly owned. All intercompany balances and transactions have been eliminated in consolidation. Use of Estimates. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. As of December 31, 2022, such estimates include allowances for credit losses, variable consideration, workers’ compensation losses, accrued medical expenses, income and other taxes, and assumptions used in the Company’s goodwill impairment assessment and in the valuation of stock grants subject to market conditions. Actual results and outcomes may differ from management’s estimates and assumptions. Service Revenues. The Company derives its revenues from three segments: contract talent solutions, permanent placement talent solutions, and Protiviti. Revenues are recognized when promised goods or services are delivered to customers in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. See Note C— “ Revenue Recognition ” for further discussion of the revenue recognition accounting policy. Costs of Services. Direct costs of contract talent solutions consist of payroll, payroll taxes, and benefit costs for the Company’s engagement professionals, as well as reimbursable expenses. Direct costs of permanent placement talent solutions consist of reimbursable expenses. Protiviti direct costs of services include professional staff payroll, payroll taxes and benefit costs, as well as reimbursable expenses. Advertising Costs. The Company expenses all advertising costs as incurred. Advertising costs were $55.6 million, $49.3 million and $37.2 million for the years ended December 31, 2022, 2021, and 2020, respectively. (Income) Loss from Investments Held in Employee Deferred Compensation Trusts . Under the Company’s employee deferred compensation plans, employees direct the investment of their account balances, and the Company invests amounts held in the associated investment trusts consistent with these directions. As realized and unrealized investment gains and losses occur, the Company’s deferred compensation obligation to employees changes and adjustments are recorded in selling, general and administrative expenses or, in the case of Protiviti, costs of services. The value of the related investment trust assets also changes by an equal and offsetting amount, leaving no net cost to the Company. The Company’s (income) loss from investments held in employee deferred compensation trusts consists primarily of unrealized and realized gains and losses and dividend income from trust investments and is presented separately on the Consolidated Statements of Operations. The following table presents the Company’s (income) loss from investments held in employee deferred compensation trusts (in thousands): Year Ended December 31, 2022 2021 2020 Dividend income $ (12,637) $ (23,719) $ (8,322) Realized and unrealized (gains) losses 98,776 (37,359) (66,866) (Income) loss from investments held in employee deferred compensation trusts $ 86,139 $ (61,078) $ (75,188) Comprehensive Income (Loss). Comprehensive income (loss) includes net income and certain other items that are recorded directly to stockholders’ equity. The Company’s only sources of other comprehensive income (loss) are foreign currency translation and foreign defined benefit plan adjustments. Cash and Cash Equivalents. The Company considers all highly liquid investments with a maturity at the date of purchase of three months or less as cash equivalents. This includes money market funds that meet the requirements to be treated as cash equivalents. However, money market funds held in investment trusts that are being used as investments to satisfy the Company’s obligations under its employee deferred compensation plans are treated as investments and are included in employee deferred compensation trust assets on the Consolidated Statements of Financial Position. Fair Value of Financial Instruments. Assets and liabilities recorded at fair value are measured and classified in accordance with a three-tier fair value hierarchy based on the observability of the inputs available in the market to measure fair value, summarized as follows: Level 1: observable inputs for identical assets or liabilities, such as quoted prices in active markets Level 2: inputs other than the quoted prices in active markets that are observable either directly or indirectly Level 3: unobservable inputs in which there is little or no market data, which requires management’s best estimates and assumptions that market participants would use in pricing the asset or liability The carrying value of cash and cash equivalents, net accounts receivable, and accounts payable and accrued expenses approximates fair value because of their short-term nature. The Company holds mutual funds and money market funds to satisfy its obligations under its employee deferred compensation plans which are carried at fair value based on quoted market prices in active markets for identical assets (level 1). The following table sets forth the composition of the underlying assets which comprise the Company’s deferred compensation trust assets (in thousands): Fair Value Measurements Using Balance at December 31, 2022 Quoted Prices Significant Other Observable Inputs Significant Unobservable Inputs Assets Money market funds $ 77,730 $ 77,730 — — Mutual funds - bond 31,096 31,096 — — Mutual funds - stock 245,908 245,908 — — Mutual funds - blend 78,000 78,000 — — $ 432,734 $ 432,734 — — Fair Value Measurements Using Balance at December 31, 2021 Quoted Prices Significant Other Observable Inputs Significant Unobservable Inputs Assets Money market funds $ 66,700 $ 66,700 — — Mutual funds - bond 30,750 30,750 — — Mutual funds - stock 303,277 303,277 — — Mutual funds - blend 94,264 94,264 — — $ 494,991 $ 494,991 — — Certain items, such as goodwill and other intangible assets, are recognized or disclosed at fair value on a non-recurring basis. The Company determines the fair value of these items using level 3 inputs. There are inherent limitations when estimating the fair value of financial instruments, and the fair values reported are not necessarily indicative of the amounts that would be realized in current market transactions. Allowance for Credit Losses. The Company is exposed to credit losses resulting from the inability of its customers to make required payments. The Company establishes an allowance for these potential credit losses based on its review of customers’ credit profiles, historical loss statistics, prepayments, recoveries, age of customer receivable balances, current business conditions and macro-economic trends. The Company considers risk characteristics of trade receivables based on asset type and geographical locations to evaluate trade receivables on a collective basis. The Company applies credit loss estimates to these pooled receivables to determine expected credit losses. The following table sets forth the activity in the allowance for credit losses from December 31, 2020, through December 31, 2022 (in thousands): Allowance for Credit Losses Balance as of December 31, 2020 $ 19,617 Charges to expense 9,464 Deductions (6,827) Other, including translation adjustments (724) Balance as of December 31, 2021 $ 21,530 Charges to expense 8,771 Deductions (7,091) Other, including translation adjustments (649) Balance as of December 31, 2022 $ 22,561 Property and Equipment . Property and equipment are recorded at cost. Depreciation is computed using the straight-line method over the following useful lives: Computer hardware 2 to 3 years Computer software 2 to 5 years Furniture and equipment 3 to 5 years Leasehold improvements Term of lease Internal-use Software. The Company develops and implements software for internal use to enhance the performance and capabilities of the operating technology infrastructure. Direct costs incurred for the development of internal-use software are capitalized from the time when the completion of the internal-use software is considered probable until the software is ready for use. All other preliminary and planning stage costs are expensed as incurred. Cloud computing implementation costs incurred in hosting arrangements are capitalized and reported as a component of other current assets, while all other capitalized internal-use software development costs are reported as a component of computer software within property and equipment on the Consolidated Statements of Financial Position. Capitalized software costs are amortized using the straight-line method over the estimated useful life of the software, ranging from two Leases. The Company determines if a contractual arrangement is a lease at inception. Operating leases are included in operating lease right-of-use (“ROU”) assets, current operating lease liabilities, and noncurrent operating lease liabilities on the Consolidated Statements of Financial Position. The Company does not currently have finance leases. ROU 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 ROU assets and liabilities are recognized at the possession date (generally, this is the commencement date) of the lease based on the present value of lease payments over the lease term. The lease payments included in the present value are fixed lease payments and fixed management fees. The operating lease ROU assets include any payments made before the commencement date and exclude lease incentives. As most of the Company’s leases do not provide an implicit rate, the Company estimates its collateralized incremental borrowing rate, based on information available at the commencement date, in determining the present value of lease payments. The Company applies the portfolio approach in applying discount rates to its classes of leases. Lease expense for lease payments is recognized on a straight-line basis over the lease term. The Company does not have any material subleases. The Company does not currently have residual value guarantees or restrictive covenants in its leases. The Company has contracts with lease and non-lease components, which are accounted for on a combined basis. Goodwill and Intangible Assets . Goodwill and intangible assets primarily consist of the cost of acquired companies in excess of the fair market value of their net tangible assets at the date of acquisition. Identifiable intangible assets are amortized over their lives, typically ranging from two Income Taxes . The Company’s operations are subject to U.S. federal, state, local and foreign income taxes. In establishing its deferred income tax assets and liabilities and its provision for income taxes, the Company makes judgments and interpretations based on the enacted tax laws that are applicable to its operations in various jurisdictions. Deferred tax assets and liabilities are measured and recorded using current enacted tax rates, which the Company expects will apply to taxable income in the years in which those temporary differences are recovered or settled. The likelihood of a material change in the Company’s expected realization of its deferred tax assets is dependent on future taxable income and the effectiveness of its tax planning strategies in the various relevant jurisdictions. The Company also evaluates the need for valuation allowances to reduce the deferred tax assets to realizable amounts. Management evaluates all positive and negative evidence and uses judgment regarding past and future events, including operating results, to help determine when it is more likely than not that all or some portion of the deferred tax assets may not be realized. When appropriate, a valuation allowance is recorded against deferred tax assets to offset future tax benefits that may not be realized. Valuation allowances of $23.6 million and $24.2 million were recorded as of December 31, 2022, and 2021, respectively. The valuation allowances recorded related primarily to net operating losses in certain international operations. If such losses are ultimately utilized to offset future segment income, the Company will recognize a tax benefit up to the full amount of the valuation reserve. Workers’ Compensation . Except for states which require participation in state-operated insurance funds, the Company retains the economic burden for the first $0.5 million per occurrence in workers’ compensation claims. Workers’ compensation includes the ongoing medical and indemnity costs for claims filed, which may be paid over numerous years following the date of injury. Claims in excess of $0.5 million are insured. Workers’ compensation expense includes the insurance premiums for claims in excess of $0.5 million, claims administration fees charged by the Company’s workers’ compensation administrator, premiums paid to state-operated insurance funds, and an estimate for the Company’s liability for incurred but not reported (“IBNR”) claims and for the ongoing development of existing claims. The reserves for IBNR claims and for the ongoing development of existing claims in each reporting period include estimates. The Company has established reserves for workers’ compensation claims using loss development rates which are estimated using periodic third party actuarial valuations based upon historical loss statistics, which include the Company’s historical frequency and severity of workers’ compensation claims, and an estimate of future cost trends. While management believes that its assumptions and estimates are appropriate, significant differences in actual experience or significant changes in assumptions may materially affect the Company’s future results. Accrued Medical Expenses. The Company offers several medical plans to its employees and retains the economic burden for the first $1.0 million per claimant per year in medical claims. Claims in excess of $1.0 million per year per claimant are insured. Medical expense includes the insurance premiums for claims in excess of $1.0 million, claims administration fees, prescription fees and reimbursements, and an estimate for the Company’s liability for IBNR claims and for the ongoing development of existing claims. Medical expenses are presented as a component of selling, general and administrative expenses, or in the case of risk consulting and internal audit services, costs of services in the Consolidated Statements of Operations. The reserves for IBNR claims and for the ongoing development of existing claims in each reporting period include estimates. The Company has established reserves for medical claims using rates which are estimated using periodic third-party actuarial valuations based upon historical loss statistics which include the Company’s historical claims data, and an estimate of future claim trends. While management believes that its assumptions and estimates are appropriate, significant differences in actual experience or significant changes in assumptions may materially affect the Company’s future results. Foreign Currency Translation. The reporting currency of the Company and its subsidiaries is the U.S. dollar. The functional currency of the Company’s international subsidiaries is their local currency. The results of operations of the Company’s international subsidiaries are translated at the monthly average exchange rates prevailing during the period. The financial position of the Company’s international subsidiaries is translated at the current exchange rates at the end of the period, and the related translation adjustments are recorded as a component of accumulated other comprehensive income (loss) within Stockholders’ Equity. Gains and losses resulting from foreign currency transactions are included as a component of selling, general and administrative expenses in the Consolidated Statements of Operations and have not been material for all periods presented. Stock-based Compensation . Under various stock plans, officers, employees, and outside directors have received or may receive grants of restricted stock, stock units, stock appreciation rights or options to purchase common stock. The Company recognizes compensation expense equal to the grant-date fair value for all stock-based payment awards that are expected to vest. This expense is recorded on a straight-line basis over the requisite service period of the entire award. The Company determines the grant-date fair value of its restricted stock and stock unit awards using the fair market value of its stock on the grant date, unless the awards are subject to market conditions, in which case the Company utilizes a binomial-lattice model (i.e., Monte Carlo simulation model). The Monte Carlo simulation model utilizes multiple input variables to determine the stock-based compensation fair value. No stock appreciation rights have been granted under the Company’s existing stock plans. The Company has not granted any options to purchase common stock since 2006.

New Accounting Pronouncements

New Accounting Pronouncements	12 Months Ended
	Dec. 31, 2022
Accounting Changes and Error Corrections [Abstract]
New Accounting Pronouncements	Note B—New Accounting Pronouncements Recently Adopted Accounting Pronouncements Government Assistance. In November 2021, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2021-10, “Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance” to increase the transparency of government assistance, including the disclosure of the types of assistance an entity receives, an entity’s method of accounting for government assistance and the effect of the assistance on an entity’s financial statements. This standard is effective for annual periods beginning after December 15, 2021. The amendments should be applied either (1) prospectively to all transactions within the scope of the amendments that are reflected in financial statements at the date of initial application and new transactions that are entered into after the date of initial application or (2) retrospectively to those transactions. The Company adopted this ASU in January 2022. The adoption of this guidance did not have a material impact on its financial statements. Business Combinations. In October 2021, the FASB issued ASU 2021-08, “Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers.” This guidance requires contract assets and contract liabilities acquired in a business combination to be recognized and measured by the acquirer on the acquisition date in accordance with Accounting Standards Codification 606, Revenue from Contracts with Customers, as if it had originated the contracts. After the amendments are adopted, it is expected that an acquirer will generally recognize and measure acquired contract assets and contract liabilities in a manner consistent with how the acquiree recognized and measured them in its pre-acquisition financial statements. The ASU is effective for fiscal years beginning after December 15, 2022, and interim periods within those fiscal years. Early adoption is permitted. The Company adopted this ASU during the fourth quarter of 2022. The adoption of this guidance did not have a material impact on its financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted None.

Revenue Recognition

Revenue Recognition	12 Months Ended
	Dec. 31, 2022
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Note C—Revenue Recognition The Company derives its revenues from three segments: contract talent solutions, permanent placement talent solutions, and Protiviti. Revenues are recognized when promised goods or services are delivered to customers in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. Service revenues, as presented on the Consolidated Statements of Operations, represent services rendered to customers less variable consideration, such as sales adjustments and allowances. Reimbursements, including those related to travel and out-of-pocket expenses, are also included in service revenues, and equivalent amounts of reimbursable expenses are included in costs of services. Contract talent solutions revenues. Contract talent solutions revenues from contracts with customers are recognized in the amount to which the Company has a right to invoice when the services are rendered by the Company’s engagement professionals. The substantial majority of engagement professionals placed on assignment by the Company are the Company’s legal employees while they are working on assignments. The Company pays all related costs of employment, including workers’ compensation insurance, state and federal unemployment taxes, social security, and certain fringe benefits. The Company assumes the risk of acceptability of its employees to its customers. The Company records contract talent solutions revenue on a gross basis as a principal versus on a net basis as an agent in the presentation of revenues and expenses. The Company has concluded that gross reporting is appropriate because the Company (i) has the risk of identifying and hiring qualified employees, (ii) has the discretion to select the employees and establish their price and duties, and (iii) bears the risk for services that are not fully paid for by customers. Fees paid to time management or vendor management service providers selected by clients are recorded as a reduction of revenues, as the Company is not the primary obligor with respect to those services. Permanent placement talent solutions revenues. Permanent placement talent solutions revenues from contracts with customers are primarily recognized when employment candidates accept offers of permanent employment. The Company has a substantial history of estimating the financial impact of permanent placement candidates who do not remain with its clients through the 90-day guarantee period. These amounts are established based primarily on historical data and are recorded as liabilities. Fees to clients are generally calculated as a percentage of the new employee’s annual compensation. No fees for permanent placement talent solutions services are charged to employment candidates. Protiviti revenues. Protiviti's consulting services are generally provided on a time-and-material basis or fixed-fee basis. Revenues earned under time-and-material arrangements and fixed-fee arrangements are recognized using a proportional performance method. Revenue is measured using cost incurred relative to total estimated cost for the engagement to measure progress towards satisfying the Company’s performance obligations. Cost incurred represents work performed and thereby best depicts the transfer of control to the customer. Protiviti’s consulting services generally contain one or more performance obligation(s) which are satisfied over a period of time. Revenues are recognized over time as the performance obligations are satisfied, because the services provided do not have any alternative use to the Company, and contracts generally include language giving the Company an enforceable right to payment for services provided to date. The Company periodically evaluates the need to provide for any losses on these projects, and losses are recognized when it is probable that a loss will be incurred. The following table presents the Company’s revenues disaggregated by functional specialization and segments (in thousands): Year Ended December 31, 2022 2021 2020 Contract talent solutions Finance and accounting $ 3,185,183 $ 2,764,897 $ 2,256,966 Administration and customer support 1,042,634 1,058,906 764,947 Technology 857,261 795,319 695,418 Elimination of intersegment revenues (a) (552,231) (580,379) (239,996) Total contract talent solutions 4,532,847 4,038,743 3,477,335 Permanent placement talent solutions 725,155 569,921 370,109 Protiviti 1,980,140 1,852,780 1,261,556 Total service revenues $ 7,238,142 $ 6,461,444 $ 5,109,000 (a) Service revenues for finance and accounting, administrative and customer support, and technology include intersegment revenues, which represent revenues from services provided to the Company’s Protiviti segment in connection with the Company’s blended business solutions. Intersegment revenues for each functional specialization are aggregated and then eliminated as a single line. Payment terms in the Company's contracts vary by the type and location of the Company’s customer and the services offered. The term between invoicing and when payment is due is not significant. Contracts with multiple performance obligations are recognized as performance obligations are delivered, and contract value is allocated based on relative stand-alone selling values of the services and products in the arrangement. As of December 31, 2022, aggregate transaction price allocated to the performance obligations that were unsatisfied for contracts with an expected duration of greater than one year was $152.6 million. Of this amount, $138.4 million is expected to be recognized within the next twelve months. As of December 31, 2021, aggregate transaction price allocated to the performance obligations that were unsatisfied for contracts with an expected duration of greater than one year was $111.9 million. Contract liabilities are recorded when cash payments are received or due in advance of performance and are reflected in accounts payable and accrued expenses on the Consolidated Statements of Financial Position. The following table sets forth the activity in contract liabilities from December 31, 2020, through December 31, 2022 (in thousands): Contract Liabilities Balance as of December 31, 2020 $ 18,252 Payments in advance of satisfaction of performance obligations 27,341 Revenue recognized (20,372) Other, including translation adjustments 380 Balance as of December 31, 2021 $ 25,601 Payments in advance of satisfaction of performance obligations 43,830 Revenue recognized (47,056) Other, including translation adjustments (392) Balance as of December 31, 2022 $ 21,983

Other Current Assets

Other Current Assets	12 Months Ended
	Dec. 31, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Current Assets	Note D—Other Current Assets Other current assets consisted of the following (in thousands): December 31, 2022 2021 Prepaid expenses $ 69,394 $ 69,526 Unamortized cloud computing implementation costs 56,108 44,692 Other 49,963 55,646 Other current assets $ 175,465 $ 169,864

Property and Equipment, Net

Property and Equipment, Net	12 Months Ended
	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Property and Equipment, Net	Note E—Property and Equipment, Net Property and equipment consisted of the following (in thousands): December 31, 2022 2021 Computer hardware $ 160,028 $ 157,408 Computer software 219,863 246,013 Furniture and equipment 96,601 93,144 Leasehold improvements 171,893 165,153 Property and equipment, cost 648,385 661,718 Accumulated depreciation (538,698) (568,315) Property and equipment, net $ 109,687 $ 93,403

Leases

Leases	12 Months Ended
	Dec. 31, 2022
Leases [Abstract]
Leases	Note F—Leases The Company has operating leases for corporate and field offices, and certain equipment. The Company’s leases have remaining lease terms of less than 1 year to 9 years, some of which include options to extend the leases for up to 10 years, and some of which include options to terminate the leases within 1 year. Operating lease expense was $89.3 million, $86.6 million and $81.5 million for the years ended December 31, 2022, 2021 and 2020, respectively. Supplemental cash flow information related to leases consisted of the following (in thousands): Year Ended December 31, 2022 2021 2020 Cash paid for operating lease liabilities $ 93,302 $ 91,253 $ 84,569 Right-of-use assets obtained in exchange for new operating lease liabilities $ 63,622 $ 51,471 $ 102,007 Supplemental balance sheet information related to leases consisted of the following: Year Ended December 31, 2022 2021 2020 Weighted average remaining lease term for operating leases 3.5 years 3.9 years 4.5 years Weighted average discount rate for operating leases 2.2 % 2.3 % 2.6 % Future minimum lease payments under non-cancelable leases as of December 31, 2022, were as follows (in thousands): 2023 $ 90,452 2024 67,170 2025 41,260 2026 27,153 2027 14,182 Thereafter 7,189 Less: Imputed interest (9,555) Present value of operating lease liabilities (a) $ 237,851 (a) Includes current portion of $86.1 million for operating leases. As of December 31, 2022, the Company had additional future minimum lease obligations totaling $4.1 million under executed operating lease contracts that had not yet commenced. These operating leases include agreements for corporate and field office facilities with lease terms of 1 to 6 years.

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	Note G—Goodwill The following table sets forth the activity in goodwill from December 31, 2020, through December 31, 2022 (in thousands): Goodwill Contract talent solutions Permanent placement talent solutions Protiviti Total Balance as of December 31, 2020 $ 134,511 $ 26,180 $ 62,364 $ 223,055 Foreign currency translation adjustments 73 9 (282) (200) Balance as of December 31, 2021 $ 134,584 $ 26,189 $ 62,082 $ 222,855 Acquisition (a) — — 15,892 15,892 Foreign currency translation adjustments (466) (91) (380) (937) Balance as of December 31, 2022 $ 134,118 $ 26,098 $ 77,594 $ 237,810 (a) In December 2022, the Company, through its wholly owned subsidiary Protiviti, acquired R2integrated (“R2i”), a digital experience agency specializing in digital solutions that integrate and accelerate customer experiences to drive impact for brands. In connection with the acquisition, the Company recorded goodwill of $15.9 million within its Protiviti segment.

Accrued Payroll and Benefit Cos

Accrued Payroll and Benefit Costs	12 Months Ended
	Dec. 31, 2022
Payables and Accruals [Abstract]
Accrued Payroll and Benefit Costs	Note H—Accrued Payroll and Benefit Costs Accrued payroll and benefit costs consisted of the following (in thousands): December 31, 2022 2021 Payroll and benefits $ 423,439 $ 449,246 Payroll taxes 33,559 74,117 Workers’ compensation 15,312 16,820 Accrued payroll and benefit costs $ 472,310 $ 540,183

Employee Deferred Compensation

Employee Deferred Compensation Plans	12 Months Ended
	Dec. 31, 2022
Deferred Compensation Plans [Abstract]
Employee Deferred Compensation Plans	Note I—Employee Deferred Compensation Plans The Company provides various qualified defined contribution 401(k) plans covering eligible employees. The plans offer a savings feature with the Company matching employee contributions. Assets of this plan are held by an independent trustee for the sole benefit of participating employees. Nonqualified plans are provided for employees on a discretionary basis, including those not eligible for the qualified plans. These plans include provisions for salary deferrals and discretionary contributions. The asset value of the nonqualified plans was $432.7 million and $495.0 million as of December 31, 2022, and December 31, 2021, respectively. The Company holds these assets to satisfy the Company’s liabilities under its deferred compensation plans. The liability value for the nonqualified plans was $474.1 million and $535.3 million as of December 31, 2022, and December 31, 2021, respectively. The following table presents the Company’s compensation expense related to its qualified defined contribution plans and nonqualified plans (in thousands): Year Ended December 31, 2022 2021 2020 Contribution expense $ 50,406 $ 47,119 $ 42,092 Increase (decrease) in employee deferred compensation expense related to changes in the fair value of trust assets (86,139) 61,078 75,188 $ (35,733) $ 108,197 $ 117,280 The Company has statutory defined contribution plans and defined benefit plans outside the U.S., which are not material.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Note J—Income Taxes The provision for income taxes for the years ended December 31, 2022, 2021 and 2020, consisted of the following (in thousands): Year Ended December 31, 2022 2021 2020 Current: Federal $ 137,483 $ 137,862 $ 79,926 State 47,032 47,226 27,401 Foreign 40,204 41,464 20,018 Deferred: Federal and state 13,542 (22,515) (9,089) Foreign 775 1,117 (2,650) $ 239,036 $ 205,154 $ 115,606 Income before the provision for income taxes for the years ended December 31, 2022, 2021 and 2020, consisted of the following (in thousands): Year Ended December 31, 2022 2021 2020 Domestic $ 780,624 $ 676,445 $ 378,876 Foreign 116,331 127,335 43,006 $ 896,955 $ 803,780 $ 421,882 The income taxes shown above varied from the statutory federal income tax rates for these periods as follows: Year Ended December 31, 2022 2021 2020 Federal U.S. income tax rate 21.0 % 21.0 % 21.0 % State income taxes, net of federal tax benefit 4.7 4.5 4.9 Permanent book/tax differences 0.3 (0.4) 0.3 Compensation book/tax differences 0.7 0.7 1.3 Non-U.S. income taxed at different rates, net of foreign tax credits 1.7 1.9 1.7 Federal tax credits (1.0) (1.6) (1.5) Tax impact of uncertain tax positions 0.1 0.3 0.1 Other, net (0.9) (0.9) (0.4) Effective tax rate 26.6 % 25.5 % 27.4 % The deferred portion of the tax provision (benefit) consisted of the following (in thousands): Year Ended December 31, 2022 2021 2020 Accrued expenses, deducted for tax when paid $ 41,953 $ (32,741) $ (33,997) Internal-use software and capitalized costs (7,930) 462 1,904 Depreciation 4,608 (2,286) 6,732 Unrealized gains (losses) from investments held in employee deferred compensation trusts (26,009) 8,167 14,882 Other, net 1,695 5,000 (1,260) $ 14,317 $ (21,398) $ (11,739) The components of the deferred income tax amounts at December 31, 2022 and 2021, were as follows (in thousands): December 31, 2022 2021 Deferred income tax assets Employee deferred compensation and other benefit obligations $ 137,501 $ 155,064 Deferred revenues, foreign royalties and management fees 3,528 16,034 Deferred payroll taxes (CARES Act) — 13,355 Credits and net operating loss carryforwards 24,782 24,811 Stock-based compensation 5,262 3,843 Allowance for credit losses 6,765 6,557 Workers’ compensation 3,207 3,623 Operating lease liabilities 46,145 52,614 Other 17,542 18,565 Total deferred income tax assets 244,732 294,466 Deferred income tax liabilities Amortization of intangible assets (20,465) (24,391) Property and equipment basis differences (19,756) (23,305) Unrealized gains from investments held in employee deferred compensation trusts (7,992) (34,001) Right-of-use assets (37,618) (43,986) Other (12,104) (10,549) Total deferred income tax liabilities (97,935) (136,232) Valuation allowance (23,571) (24,198) Total deferred income tax assets, net $ 123,226 $ 134,036 Credits and net operating loss carryforwards primarily include tax-effected net operating losses in foreign countries of $23.1 million that expire in 2023 and later, and California enterprise zone tax credits of $1.6 million that expire in 2023. Of the $1.6 million of California enterprise zone tax credits, the Company expects that it will utilize $0.2 million of these credits prior to expiration. Valuation allowances of $22.2 million have been maintained against net operating loss carryforwards and other deferred items in foreign countries. In addition, a valuation allowance of $1.4 million has been maintained against California enterprise zone tax credits. As of December 31, 2022, the Company’s consolidated financial statements provide for any related U.S. tax liability on earnings of international subsidiaries that may be repatriated. The following table reconciles the total amounts of gross unrecognized tax benefits from January 1, 2020 to December 31, 2022 (in thousands): December 31, 2022 2021 2020 Balance at beginning of period $ 11,264 $ 9,785 $ 9,354 Gross increases—tax positions in prior years 1,528 3 220 Gross decreases—tax positions in prior years (7) 0 0 Gross increases—tax positions in current year 1,533 3,370 1,678 Lapse of statute of limitations (2,058) (1,894) (1,467) Balance at end of period $ 12,260 $ 11,264 $ 9,785 The total amount of unrecognized tax benefits that, if recognized, would impact the effective tax rate is $12.3 million, $11.3 million and $9.8 million for 2022, 2021 and 2020, respectively. The Company’s continuing practice is to recognize interest and penalties related to income tax matters in income tax expense. The total amount of interest and penalties accrued as of December 31, 2022, is $0.6 million, including a $0.2 million increase recorded in income tax expense during the year. The total amount of interest and penalties accrued as of December 31, 2021, was $0.4 million, including a $0.1 million decrease recorded in income tax expense during the year. The total amount of interest and penalties accrued as of December 31, 2020, was $0.5 million, including less than a $0.1 million increase recorded in income tax expense during the year. The Company does not believe it is reasonably possible that the settlement of tax uncertainties will occur within the next twelve months. The Company’s major income tax jurisdictions are the United States, Australia, Belgium, Canada, France, Germany and the United Kingdom. For U.S. federal income tax, the Company remains subject to examination for 2019 and subsequent years. For major U.S. states, with few exceptions, the Company remains subject to examination for 2018 and subsequent years. Generally, for foreign countries, the Company remains subject to examination for 2015 and subsequent years.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note K—Commitments and Contingencies On March 23, 2015, Plaintiff Jessica Gentry, on her own behalf and on behalf of a putative class of allegedly similarly situated individuals, filed a complaint against the Company in the Superior Court of California, San Francisco County, which was subsequently amended on October 23, 2015. The complaint alleges that a putative class of current and former employees of the Company working in California since March 13, 2010, were denied compensation for the time they spent interviewing “for temporary and permanent employment opportunities” as well as performing activities related to the interview process. Gentry seeks recovery on her own behalf and on behalf of the putative class in an unspecified amount for this allegedly unpaid compensation. Gentry also seeks recovery of an unspecified amount for the alleged failure of the Company to provide her and the putative class with accurate wage statements. Gentry also seeks an unspecified amount of other damages, attorneys’ fees and statutory penalties, including penalties for allegedly not paying all wages due upon separation to former employees and statutory penalties on behalf of herself and other allegedly “aggrieved employees” as defined by California’s Labor Code Private Attorney General Act (“PAGA”). On January 4, 2016, the Court denied a motion by the Company to compel all of Gentry’s claims, except the PAGA claim, to individual arbitration. At this stage of the litigation, it is not feasible to predict the outcome of or a range of loss, should a loss occur, from this proceeding and, accordingly, no amounts have been provided in the Company’s Financial Statements. The Company believes it has meritorious defenses to the allegations and the Company intends to continue to vigorously defend against the litigation. On April 6, 2018, Plaintiff Shari Dorff, on her own behalf and on behalf of a putative class of allegedly similarly situated individuals, filed a complaint against the Company in the Superior Court of California, County of Los Angeles. In addition to certain claims individual to Plaintiff Dorff, the complaint alleges that salaried recruiters based in California have been misclassified as exempt employees and seeks an unspecified amount for: unpaid wages resulting from such alleged misclassification; alleged failure to provide a reasonable opportunity to take meal periods and rest breaks; alleged failure to pay wages on a timely basis both during employment and upon separation; alleged failure to comply with California requirements regarding wage statements and record-keeping; and alleged improper denial of expense reimbursement. Plaintiff Dorff also seeks an unspecified amount of other damages, attorneys’ fees and penalties, including but not limited to statutory penalties on behalf of herself and other allegedly “aggrieved employees” as defined by PAGA. At this stage of the litigation, it is not feasible to predict the outcome of or a range of loss, should a loss occur, from this proceeding and, accordingly, no amounts have been provided in the Company’s Financial Statements. The Company believes it has meritorious defenses to the allegations and the Company intends to continue to vigorously defend against the litigation. The Company is involved in a number of other lawsuits arising in the ordinary course of business. While management does not expect any of these other matters to have a material adverse effect on the Company’s results of operations, financial position or cash flows, litigation is subject to certain inherent uncertainties. Legal costs associated with the resolution of claims, lawsuits and other contingencies are expensed as incurred. The Company has an uncommitted letter of credit facility (the “facility”) of up to $35.0 million, which is available to cover the issuance of debt support standby letters of credit. The Company had used $14.1 million and $18.0 million in debt support standby letters of credit as of December 31, 2022 and 2021, respectively. Of the debt support standby letters of credit outstanding, as of December 31, 2022 and 2021, $14.1 million and $18.0 million, respectively, satisfied workers’ compensation insurer’s collateral requirements. There is a service fee of 1.2% on the used portion of the facility. The facility is subject to certain financial covenants and expires on August 31, 2023. The Company was in compliance with these covenants as of December 31, 2022. The Company intends to renew this facility prior to its August 31, 2023, expiration.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2022
Equity [Abstract]
Stockholders' Equity	Note L—Stockholders' Equity Stock Repurchase Program. As of December 31, 2022, the Company is authorized to repurchase, from time to time, up to 3.8 million additional shares of the Company’s common stock on the open market or in privately negotiated transactions, depending on market conditions. The number and the cost of common stock shares repurchased during the years ended December 31, 2022, 2021 and 2020, are reflected in the following table (in thousands): Year Ended December 31, 2022 2021 2020 Common stock repurchased (in shares) 3,319 2,796 2,505 Common stock repurchased $ 280,130 $ 260,410 $ 138,408 Additional stock repurchases were made in connection with employee stock plans, whereby Company shares were tendered by employees for the payment of applicable statutory withholding taxes. The number and the cost of employee stock plan repurchases made during the years ended December 31, 2022, 2021 and 2020, are reflected in the following table (in thousands): Year Ended December 31, 2022 2021 2020 Repurchases related to employee stock plans (in shares) 362 347 366 Repurchases related to employee stock plans $ 37,678 $ 29,817 $ 17,399 The repurchased shares are held in treasury and are presented as if constructively retired. Treasury stock is accounted for using the cost method. Treasury stock activity for each of the three years ended December 31, 2022, 2021 and 2020 (consisting of purchase of shares for the treasury) is presented in the Consolidated Statements of Stockholders’ Equity. Dividends. The Company’s Board of Directors may, at their discretion, declare and pay cash dividends upon the shares of the Company’s stock, either out of the Company’s retained earnings or additional paid-in capital. The dividends declared per share were $1.72, $1.52 and $1.36 during the years ended December 31, 2022, 2021 and 2020, respectively.

Stock Plans

Stock Plans	12 Months Ended
	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Stock Plans	Note M—Stock Plans Under various stock plans, officers, employees, and outside directors have received or may receive grants of restricted stock, stock units, stock appreciation rights or options to purchase common stock. Grants have been made at the discretion of the Committees of the Board of Directors. Grants generally vest either on a straight-line basis over four years or on a cliff basis over three years. Shares offered under the plan are authorized but unissued shares. Recipients of restricted stock do not pay any cash consideration to the Company for the shares and have the right to vote all shares subject to such grant. Restricted stock grants contain forfeitable rights to dividends. Dividends for these grants are accrued on the dividend payment dates but are not paid until the shares vest, and dividends accrued for shares that ultimately do not vest are forfeited. Recipients of stock units do not pay any cash consideration for the units, do not have the right to vote and do not receive dividends with respect to such units. During the year ended December 31, 2022, the Company granted performance shares to its executives in the form of restricted stock. The shares granted contain (1) a performance condition based on Return on Invested Capital (“ROIC”), and (2) a market condition based on Total Shareholder Return (“TSR”). The ROIC performance condition and the TSR market condition measure the Company’s performance against a peer group. Shares will be delivered at the end of a three-year vesting, TSR and ROIC performance period based on the Company’s actual performance compared to the peer group. The ROIC performance condition is calculated first and has a range of possible outcomes of zero percent (0%) to one-hundred fifty percent (150%). The TSR condition is considered a modifier of the ROIC performance condition. The range for the TSR condition is seventy-five percent (75%) to one-hundred twenty-five percent (125%). The result calculated by multiplying the ROIC percentage by the TSR percentage is used to calculate the actual number of shares earned. The fair value of this award was determined using a Monte Carlo simulation with the following assumptions: a historical volatility of 36.7%, a 0% dividend yield, and a risk-free interest rate of 2.3%. The historical volatility was based on the most recent 2.78-year period for the Company and the components of the peer group. The stock price movements have been modeled such that the dividends are incorporated in the returns of each company’s stock, therefore the Monte Carlo simulation reflects a 0% dividend yield for each stock. The use of a 0% dividend yield is mathematically equivalent to including the dividends in the calculation of TSR. The risk-free interest rate is equal to the yield, as of the valuation date, of the zero-coupon U.S. Treasury bill that is commensurate with the remaining performance period. Unrecognized compensation cost is expected to be recognized over the next four years. Total unrecognized compensation cost, net of estimated forfeitures, for restricted stock and stock units was $85.4 million, $75.3 million and $73.9 million for the years ended December 31, 2022, 2021 and 2020, respectively. The following table reflects activity under all stock plans from December 31, 2019 through December 31, 2022, and the weighted average exercise prices (in thousands, except per share amounts): Non-Executive Officer Performance-Based Awards With Market Conditions Performance-Based Awards Without Market Conditions Total Awards With Performance Condition Number of Weighted Number of Weighted Number of Weighted Number of Weighted Outstanding, December 31, 2019 947 $57.67 236 $74.01 608 $51.74 844 $57.97 Granted 625 $54.92 223 $66.86 70 $47.45 293 $62.22 Restrictions lapsed (526) $54.57 — — (400) $47.45 (400) $47.45 Forfeited (26) $58.37 — — — — — — Outstanding, December 31, 2020 1,020 $57.57 459 $70.53 278 $56.83 737 $65.36 Granted 507 $76.49 167 $88.77 70 $56.83 237 $79.40 Restrictions lapsed (530) $60.10 — — (348) $56.83 (348) $56.83 Forfeited (46) $65.40 — — — — — — Outstanding, December 31, 2021 951 $65.85 626 $75.41 — — 626 $75.41 Granted 410 $116.01 320 $96.20 — — 320 $96.20 Restrictions lapsed (425) $64.27 (442) $74.01 — — (442) $74.01 Forfeited (28) $80.78 — — — — — — Outstanding, December 31, 2022 908 $88.74 504 $89.84 — — 504 $89.84 The total fair value of shares vested was $87.8 million, $78.0 million and $46.2 million for the years ended December 31, 2022, 2021 and 2020, respectively.

Net Income Per Share

Net Income Per Share	12 Months Ended
	Dec. 31, 2022
Earnings Per Share [Abstract]
Net Income Per Share	Note N—Net Income Per Share The calculation of net income per share for the three years ended December 31, 2022, 2021 and 2020, are reflected in the following table (in thousands, except per share amounts): Year Ended December 31, 2022 2021 2020 Net income $ 657,919 $ 598,626 $ 306,276 Basic: Weighted average shares 108,214 110,482 112,729 Diluted: Weighted average shares 108,214 110,482 112,729 Dilutive effect of potential common shares 957 1,236 589 Diluted weighted average shares 109,171 111,718 113,318 Net income per share: Basic $ 6.08 $ 5.42 $ 2.72 Diluted $ 6.03 $ 5.36 $ 2.70

Business Segments

Business Segments	12 Months Ended
	Dec. 31, 2022
Segment Reporting [Abstract]
Business Segments	Note O—Business Segments The Company has three reportable segments: contract talent solutions, permanent placement talent solutions, and Protiviti. Operating segments are defined as components of the Company for which separate financial information is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and assess performance. The contract talent solutions and permanent placement talent solutions segments provide specialized engagement professionals and full-time personnel, respectively, for finance and accounting, technology, marketing and creative, legal, administrative, and customer support roles. The Protiviti segment provides business and technology risk consulting and internal audit services. The accounting policies of the segments are set forth in Note A— “ Summary of Significant Accounting Policies ” . The Company evaluates performance based on income before net interest income, intangible assets amortization expense and income taxes. The following table provides a reconciliation of service revenues and segment income by reportable segment to consolidated results (in thousands): Year Ended December 31, 2022 2021 2020 Service revenues Contract talent solutions $ 4,532,847 $ 4,038,743 $ 3,477,335 Permanent placement talent solutions 725,155 569,921 370,109 Protiviti 1,980,140 1,852,780 1,261,556 $ 7,238,142 $ 6,461,444 $ 5,109,000 Segment income Contract talent solutions $ 492,281 $ 393,872 $ 237,279 Permanent placement talent solutions 127,622 106,465 28,799 Protiviti 270,711 305,487 155,680 Combined segment income 890,614 805,824 421,758 Amortization of intangible assets 1,667 2,241 1,219 Interest income, net (8,008) (197) (1,343) Income before income taxes $ 896,955 $ 803,780 $ 421,882 Service revenues presented above are shown net of eliminations of intersegment revenues. Intersegment revenues between contract talent solutions segment and Protiviti segment were $552.2 million, $580.4 million and $240.0 million for the years ended December 31, 2022, 2021 and 2020, respectively. Revenue and direct costs related to the intersegment activity are reflected in the Protiviti segment, including the costs of candidate payroll, fringe benefits and incremental recruiter compensation. Assets by reportable segment are not presented as the Company does not allocate assets to its reportable segments, nor is such information used by management for purposes of assessing performance or allocating resources. The Company operates internationally, with operations in North America, South America, Europe, Asia, and Australia. The following tables represent revenues and long-lived assets by geographic location (in thousands): Year Ended December 31, 2022 2021 2020 Service revenues (a) Domestic $ 5,712,330 $ 5,006,525 $ 3,984,742 Foreign (b) 1,525,812 1,454,919 1,124,258 $ 7,238,142 $ 6,461,444 $ 5,109,000 December 31, 2022 2021 Property and equipment, net Domestic $ 90,388 $ 76,757 Foreign 19,299 16,646 $ 109,687 $ 93,403 (a) No customer accounted for more than 10% of the Company’s total service revenues in any year presented. (b) No country represented more than 10% of revenues in any year presented.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2022
Subsequent Events [Abstract]
Subsequent Events	Note P—Subsequent Events On February 9, 2023, the Company authorized the repurchase, from time to time, of up to an additional 10.0 million shares of the Company’s common stock on the open market or in privately negotiated transactions, depending on market conditions. The authorization is in addition to the approximately 3.8 million shares remaining under the existing repurchase program. There is no guarantee as to whether, when, or how many shares the Company will repurchase, and the Company may discontinue the repurchase program at any time. On February 9, 2023, the Company announced the following: Quarterly dividend per share $0.48 Declaration date February 9, 2023 Record date February 24, 2023 Payment date March 15, 2023

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2022
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule II - Valuation and Qualifying Accounts	Schedule II—Valuation and Qualifying Accounts (in thousands) Balance at Charged to Deductions Translation Balance at End of Period Year ended December 31, 2020 Allowance for credit losses $ 23,443 4,200 (7,906) (120) $ 19,617 Deferred tax valuation allowance $ 21,618 3,462 (2,333) 1,385 $ 24,132 Year ended December 31, 2021 Allowance for credit losses $ 19,617 9,464 (6,827) (724) $ 21,530 Deferred tax valuation allowance $ 24,132 5,635 (3,936) (1,633) $ 24,198 Year ended December 31, 2022 Allowance for credit losses $ 21,530 8,771 (7,091) (649) $ 22,561 Deferred tax valuation allowance $ 24,198 2,033 (1,467) (1,193) $ 23,571

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Nature of Operations	Nature of Operations. Robert Half International Inc. (the “Company”) is a specialized talent solutions and business consulting firm that connects opportunities at great companies with highly skilled job seekers. Robert Half ® offers contract talent solutions and permanent placement talent solutions for finance and accounting, technology, marketing and creative, legal, administrative, and customer support roles. Robert Half is also the parent company of Protiviti ® , a global consulting firm that provides internal audit, risk, business, and technology consulting solutions. During 2022 the Company unified its family of Robert Half brands to focus on its key brand, Robert Half. This simplifies the Company’s go-to-market brand structure for clients and candidates, provides leverage for greater brand awareness, and allows future flexibility to expand the Company’s existing functional specializations. In connection with this process, the Company’s current financial statement disclosures reflect new names for its reportable segments, including contract talent solutions (formerly temporary and consultant staffing), permanent placement talent solutions (formerly permanent placement staffing) and Protiviti (formerly risk consulting and internal audit services). What was previously referred to as staffing operations is now referred to as talent solutions. The presentation of contract talent solutions includes functional specializations rather than the previously branded divisions. The functional specializations are: finance and accounting, which combines the former Accountemps ® and Robert Half ® Management Resources divisions; administrative and customer support, which consists of the former OfficeTeam ® ; and technology, which includes the former Robert Half ® Technology . The Company operates in North America, South America, Europe, Asia, and Australia. The Company is a Delaware corporation.
Basis of Presentation	Basis of Presentation.    The Consolidated Financial Statements (“Financial Statements”) of the Company are prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”) and the rules of the Securities and Exchange Commission (“SEC”).
Principles of Consolidation	Principles of Consolidation. The Financial Statements include the accounts of the Company and its subsidiaries, all of which are wholly owned. All intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates.    The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. As of December 31, 2022, such estimates include allowances for credit losses, variable consideration, workers’ compensation losses, accrued medical expenses, income and other taxes, and assumptions used in the Company’s goodwill impairment assessment and in the valuation of stock grants subject to market conditions. Actual results and outcomes may differ from management’s estimates and assumptions.
Service Revenues and Costs of Services	Service Revenues. The Company derives its revenues from three segments: contract talent solutions, permanent placement talent solutions, and Protiviti. Revenues are recognized when promised goods or services are delivered to customers in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. See Note C— “ Revenue Recognition ” for further discussion of the revenue recognition accounting policy. Costs of Services. Direct costs of contract talent solutions consist of payroll, payroll taxes, and benefit costs for the Company’s engagement professionals, as well as reimbursable expenses. Direct costs of permanent placement talent solutions consist of reimbursable expenses. Protiviti direct costs of services include professional staff payroll, payroll taxes and benefit costs, as well as reimbursable expenses.
Advertising Costs	Advertising Costs.    The Company expenses all advertising costs as incurred.
(Income) Loss from Investments Held in Employee Deferred Compensation Trusts	(Income) Loss from Investments Held in Employee Deferred Compensation Trusts . Under the Company’s employee deferred compensation plans, employees direct the investment of their account balances, and the Company invests amounts held in the associated investment trusts consistent with these directions. As realized and unrealized investment gains and losses occur, the Company’s deferred compensation obligation to employees changes and adjustments are recorded in selling, general and administrative expenses or, in the case of Protiviti, costs of services. The value of the related investment trust assets also changes by an equal and offsetting amount, leaving no net cost to the Company. The Company’s (income) loss from investments held in employee deferred compensation trusts consists primarily of unrealized and realized gains and losses and dividend income from trust investments and is presented separately on the Consolidated Statements of Operations.
Comprehensive Income (Loss)	Comprehensive Income (Loss). Comprehensive income (loss) includes net income and certain other items that are recorded directly to stockholders’ equity. The Company’s only sources of other comprehensive income (loss) are foreign currency translation and foreign defined benefit plan adjustments.
Cash and Cash Equivalents	Cash and Cash Equivalents. The Company considers all highly liquid investments with a maturity at the date of purchase of three months or less as cash equivalents. This includes money market funds that meet the requirements to be treated as cash equivalents. However, money market funds held in investment trusts that are being used as investments to satisfy the Company’s obligations under its employee deferred compensation plans are treated as investments and are included in employee deferred compensation trust assets on the Consolidated Statements of Financial Position.
Fair Value of Financial Instruments	Fair Value of Financial Instruments. Assets and liabilities recorded at fair value are measured and classified in accordance with a three-tier fair value hierarchy based on the observability of the inputs available in the market to measure fair value, summarized as follows: Level 1: observable inputs for identical assets or liabilities, such as quoted prices in active markets Level 2: inputs other than the quoted prices in active markets that are observable either directly or indirectly Level 3: unobservable inputs in which there is little or no market data, which requires management’s best estimates and assumptions that market participants would use in pricing the asset or liability The carrying value of cash and cash equivalents, net accounts receivable, and accounts payable and accrued expenses approximates fair value because of their short-term nature. The Company holds mutual funds and money market funds to satisfy its obligations under its employee deferred compensation plans which are carried at fair value based on quoted market prices in active markets for identical assets (level 1).
Allowance for Credit Losses	Allowance for Credit Losses. The Company is exposed to credit losses resulting from the inability of its customers to make required payments. The Company establishes an allowance for these potential credit losses based on its review of customers’ credit profiles, historical loss statistics, prepayments, recoveries, age of customer receivable balances, current business conditions and macro-economic trends. The Company considers risk characteristics of trade receivables based on asset type and geographical locations to evaluate trade receivables on a collective basis. The Company applies credit loss estimates to these pooled receivables to determine expected credit losses.
Property and Equipment	Property and Equipment . Property and equipment are recorded at cost. Depreciation is computed using the straight-line method over the following useful lives: Computer hardware 2 to 3 years Computer software 2 to 5 years Furniture and equipment 3 to 5 years Leasehold improvements Term of lease
Internal-use Software	Internal-use Software. The Company develops and implements software for internal use to enhance the performance and capabilities of the operating technology infrastructure. Direct costs incurred for the development of internal-use software are capitalized from the time when the completion of the internal-use software is considered probable until the software is ready for use. All other preliminary and planning stage costs are expensed as incurred. Cloud computing implementation costs incurred in hosting arrangements are capitalized and reported as a component of other current assets, while all other capitalized internal-use software development costs are reported as a component of computer software within property and equipment on the Consolidated Statements of Financial Position. Capitalized software costs are amortized using the straight-line method over the estimated useful life of the software, ranging from two
Leases	Leases. The Company determines if a contractual arrangement is a lease at inception. Operating leases are included in operating lease right-of-use (“ROU”) assets, current operating lease liabilities, and noncurrent operating lease liabilities on the Consolidated Statements of Financial Position. The Company does not currently have finance leases. ROU 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 ROU assets and liabilities are recognized at the possession date (generally, this is the commencement date) of the lease based on the present value of lease payments over the lease term. The lease payments included in the present value are fixed lease payments and fixed management fees. The operating lease ROU assets include any payments made before the commencement date and exclude lease incentives. As most of the Company’s leases do not provide an implicit rate, the Company estimates its collateralized incremental borrowing rate, based on information available at the commencement date, in determining the present value of lease payments. The Company applies the portfolio approach in applying discount rates to its classes of leases. Lease expense for lease payments is recognized on a straight-line basis over the lease term. The Company does not have any material subleases. The Company does not currently have residual value guarantees or restrictive covenants in its leases. The Company has contracts with lease and non-lease components, which are accounted for on a combined basis.
Goodwill and Intangible Assets	Goodwill and Intangible Assets . Goodwill and intangible assets primarily consist of the cost of acquired companies in excess of the fair market value of their net tangible assets at the date of acquisition. Identifiable intangible assets are amortized over their lives, typically ranging from two
Income Taxes	Income Taxes . The Company’s operations are subject to U.S. federal, state, local and foreign income taxes. In establishing its deferred income tax assets and liabilities and its provision for income taxes, the Company makes judgments and interpretations based on the enacted tax laws that are applicable to its operations in various jurisdictions. Deferred tax assets and liabilities are measured and recorded using current enacted tax rates, which the Company expects will apply to taxable income in the years in which those temporary differences are recovered or settled. The likelihood of a material change in the Company’s expected realization of its deferred tax assets is dependent on future taxable income and the effectiveness of its tax planning strategies in the various relevant jurisdictions.
Workers' Compensation	Workers’ Compensation . Except for states which require participation in state-operated insurance funds, the Company retains the economic burden for the first $0.5 million per occurrence in workers’ compensation claims. Workers’ compensation includes the ongoing medical and indemnity costs for claims filed, which may be paid over numerous years following the date of injury. Claims in excess of $0.5 million are insured. Workers’ compensation expense includes the insurance premiums for claims in excess of $0.5 million, claims administration fees charged by the Company’s workers’ compensation administrator, premiums paid to state-operated insurance funds, and an estimate for the Company’s liability for incurred but not reported (“IBNR”) claims and for the ongoing development of existing claims. The reserves for IBNR claims and for the ongoing development of existing claims in each reporting period include estimates. The Company has established reserves for workers’ compensation claims using loss development rates which are estimated using periodic third party actuarial valuations based upon historical loss statistics, which include the Company’s historical frequency and severity of workers’ compensation claims, and an estimate of future cost trends. While management believes that its assumptions and estimates are appropriate, significant differences in actual experience or significant changes in assumptions may materially affect the Company’s future results.
Accrued Medical Expenses	Accrued Medical Expenses. The Company offers several medical plans to its employees and retains the economic burden for the first $1.0 million per claimant per year in medical claims. Claims in excess of $1.0 million per year per claimant are insured. Medical expense includes the insurance premiums for claims in excess of $1.0 million, claims administration fees, prescription fees and reimbursements, and an estimate for the Company’s liability for IBNR claims and for the ongoing development of existing claims. Medical expenses are presented as a component of selling, general and administrative expenses, or in the case of risk consulting and internal audit services, costs of services in the Consolidated Statements of Operations.
Foreign Currency Translation	Foreign Currency Translation. The reporting currency of the Company and its subsidiaries is the U.S. dollar. The functional currency of the Company’s international subsidiaries is their local currency. The results of operations of the Company’s international subsidiaries are translated at the monthly average exchange rates prevailing during the period. The financial position of the Company’s international subsidiaries is translated at the current exchange rates at the end of the period, and the related translation adjustments are recorded as a component of accumulated other comprehensive income (loss) within Stockholders’ Equity. Gains and losses resulting from foreign currency transactions are included as a component of selling, general and administrative expenses in the Consolidated Statements of Operations and have not been material for all periods presented.
Stock-based Compensation	Stock-based Compensation . Under various stock plans, officers, employees, and outside directors have received or may receive grants of restricted stock, stock units, stock appreciation rights or options to purchase common stock. The Company recognizes compensation expense equal to the grant-date fair value for all stock-based payment awards that are expected to vest. This expense is recorded on a straight-line basis over the requisite service period of the entire award. The Company determines the grant-date fair value of its restricted stock and stock unit awards using the fair market value of its stock on the grant date, unless the awards are subject to market conditions, in which case the Company utilizes a binomial-lattice model (i.e., Monte Carlo simulation model). The Monte Carlo simulation model utilizes multiple input variables to determine the stock-based compensation fair value.
New Accounting Pronouncements	Recently Adopted Accounting Pronouncements Government Assistance. In November 2021, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2021-10, “Government Assistance (Topic 832): Disclosures by Business Entities about Government Assistance” to increase the transparency of government assistance, including the disclosure of the types of assistance an entity receives, an entity’s method of accounting for government assistance and the effect of the assistance on an entity’s financial statements. This standard is effective for annual periods beginning after December 15, 2021. The amendments should be applied either (1) prospectively to all transactions within the scope of the amendments that are reflected in financial statements at the date of initial application and new transactions that are entered into after the date of initial application or (2) retrospectively to those transactions. The Company adopted this ASU in January 2022. The adoption of this guidance did not have a material impact on its financial statements. Business Combinations. In October 2021, the FASB issued ASU 2021-08, “Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers.” This guidance requires contract assets and contract liabilities acquired in a business combination to be recognized and measured by the acquirer on the acquisition date in accordance with Accounting Standards Codification 606, Revenue from Contracts with Customers, as if it had originated the contracts. After the amendments are adopted, it is expected that an acquirer will generally recognize and measure acquired contract assets and contract liabilities in a manner consistent with how the acquiree recognized and measured them in its pre-acquisition financial statements. The ASU is effective for fiscal years beginning after December 15, 2022, and interim periods within those fiscal years. Early adoption is permitted. The Company adopted this ASU during the fourth quarter of 2022. The adoption of this guidance did not have a material impact on its financial statements. Recently Issued Accounting Pronouncements Not Yet Adopted None.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Schedule of Employee Deferred Compensation Plans	The following table presents the Company’s (income) loss from investments held in employee deferred compensation trusts (in thousands): Year Ended December 31, 2022 2021 2020 Dividend income $ (12,637) $ (23,719) $ (8,322) Realized and unrealized (gains) losses 98,776 (37,359) (66,866) (Income) loss from investments held in employee deferred compensation trusts $ 86,139 $ (61,078) $ (75,188)
Schedule of Allocation of Plan Assets	The following table sets forth the composition of the underlying assets which comprise the Company’s deferred compensation trust assets (in thousands): Fair Value Measurements Using Balance at December 31, 2022 Quoted Prices Significant Other Observable Inputs Significant Unobservable Inputs Assets Money market funds $ 77,730 $ 77,730 — — Mutual funds - bond 31,096 31,096 — — Mutual funds - stock 245,908 245,908 — — Mutual funds - blend 78,000 78,000 — — $ 432,734 $ 432,734 — — Fair Value Measurements Using Balance at December 31, 2021 Quoted Prices Significant Other Observable Inputs Significant Unobservable Inputs Assets Money market funds $ 66,700 $ 66,700 — — Mutual funds - bond 30,750 30,750 — — Mutual funds - stock 303,277 303,277 — — Mutual funds - blend 94,264 94,264 — — $ 494,991 $ 494,991 — —
Schedule of Accounts Receivable, Allowance for Credit Loss	The following table sets forth the activity in the allowance for credit losses from December 31, 2020, through December 31, 2022 (in thousands): Allowance for Credit Losses Balance as of December 31, 2020 $ 19,617 Charges to expense 9,464 Deductions (6,827) Other, including translation adjustments (724) Balance as of December 31, 2021 $ 21,530 Charges to expense 8,771 Deductions (7,091) Other, including translation adjustments (649) Balance as of December 31, 2022 $ 22,561
Schedule of Depreciation Expense Computed Using Straight-Line Method over Useful Lives	Depreciation is computed using the straight-line method over the following useful lives: Computer hardware 2 to 3 years Computer software 2 to 5 years Furniture and equipment 3 to 5 years Leasehold improvements Term of lease Property and equipment consisted of the following (in thousands): December 31, 2022 2021 Computer hardware $ 160,028 $ 157,408 Computer software 219,863 246,013 Furniture and equipment 96,601 93,144 Leasehold improvements 171,893 165,153 Property and equipment, cost 648,385 661,718 Accumulated depreciation (538,698) (568,315) Property and equipment, net $ 109,687 $ 93,403

Revenue Recognition (Tables)

Revenue Recognition (Tables)	12 Months Ended
	Dec. 31, 2022
Revenue from Contract with Customer [Abstract]
Schedule of Revenue Disaggregated by Functional Specialization and Segments	The following table presents the Company’s revenues disaggregated by functional specialization and segments (in thousands): Year Ended December 31, 2022 2021 2020 Contract talent solutions Finance and accounting $ 3,185,183 $ 2,764,897 $ 2,256,966 Administration and customer support 1,042,634 1,058,906 764,947 Technology 857,261 795,319 695,418 Elimination of intersegment revenues (a) (552,231) (580,379) (239,996) Total contract talent solutions 4,532,847 4,038,743 3,477,335 Permanent placement talent solutions 725,155 569,921 370,109 Protiviti 1,980,140 1,852,780 1,261,556 Total service revenues $ 7,238,142 $ 6,461,444 $ 5,109,000 (a) Service revenues for finance and accounting, administrative and customer support, and technology include intersegment revenues, which represent revenues from services provided to the Company’s Protiviti segment in connection with the Company’s blended business solutions. Intersegment revenues for each functional specialization are aggregated and then eliminated as a single line.
Schedule of Contract Liability Activity	The following table sets forth the activity in contract liabilities from December 31, 2020, through December 31, 2022 (in thousands): Contract Liabilities Balance as of December 31, 2020 $ 18,252 Payments in advance of satisfaction of performance obligations 27,341 Revenue recognized (20,372) Other, including translation adjustments 380 Balance as of December 31, 2021 $ 25,601 Payments in advance of satisfaction of performance obligations 43,830 Revenue recognized (47,056) Other, including translation adjustments (392) Balance as of December 31, 2022 $ 21,983

Other Current Assets (Tables)

Other Current Assets (Tables)	12 Months Ended
	Dec. 31, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of Other Current Assets	Other current assets consisted of the following (in thousands): December 31, 2022 2021 Prepaid expenses $ 69,394 $ 69,526 Unamortized cloud computing implementation costs 56,108 44,692 Other 49,963 55,646 Other current assets $ 175,465 $ 169,864

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Schedule of Components of Property and Equipment	Depreciation is computed using the straight-line method over the following useful lives: Computer hardware 2 to 3 years Computer software 2 to 5 years Furniture and equipment 3 to 5 years Leasehold improvements Term of lease Property and equipment consisted of the following (in thousands): December 31, 2022 2021 Computer hardware $ 160,028 $ 157,408 Computer software 219,863 246,013 Furniture and equipment 96,601 93,144 Leasehold improvements 171,893 165,153 Property and equipment, cost 648,385 661,718 Accumulated depreciation (538,698) (568,315) Property and equipment, net $ 109,687 $ 93,403

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2022
Leases [Abstract]
Supplemental Cash Flow Information	Supplemental cash flow information related to leases consisted of the following (in thousands): Year Ended December 31, 2022 2021 2020 Cash paid for operating lease liabilities $ 93,302 $ 91,253 $ 84,569 Right-of-use assets obtained in exchange for new operating lease liabilities $ 63,622 $ 51,471 $ 102,007
Supplemental Balance Sheet Information	Supplemental balance sheet information related to leases consisted of the following: Year Ended December 31, 2022 2021 2020 Weighted average remaining lease term for operating leases 3.5 years 3.9 years 4.5 years Weighted average discount rate for operating leases 2.2 % 2.3 % 2.6 %
Schedule of Future Minimum Lease Payments	Future minimum lease payments under non-cancelable leases as of December 31, 2022, were as follows (in thousands): 2023 $ 90,452 2024 67,170 2025 41,260 2026 27,153 2027 14,182 Thereafter 7,189 Less: Imputed interest (9,555) Present value of operating lease liabilities (a) $ 237,851 (a) Includes current portion of $86.1 million for operating leases.

Goodwill (Tables)

Goodwill (Tables)	12 Months Ended
	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Activity in Goodwill	The following table sets forth the activity in goodwill from December 31, 2020, through December 31, 2022 (in thousands): Goodwill Contract talent solutions Permanent placement talent solutions Protiviti Total Balance as of December 31, 2020 $ 134,511 $ 26,180 $ 62,364 $ 223,055 Foreign currency translation adjustments 73 9 (282) (200) Balance as of December 31, 2021 $ 134,584 $ 26,189 $ 62,082 $ 222,855 Acquisition (a) — — 15,892 15,892 Foreign currency translation adjustments (466) (91) (380) (937) Balance as of December 31, 2022 $ 134,118 $ 26,098 $ 77,594 $ 237,810 (a) In December 2022, the Company, through its wholly owned subsidiary Protiviti, acquired R2integrated (“R2i”), a digital experience agency specializing in digital solutions that integrate and accelerate customer experiences to drive impact for brands. In connection with the acquisition, the Company recorded goodwill of $15.9 million within its Protiviti segment.

Accrued Payroll and Benefit C_2

Accrued Payroll and Benefit Costs (Tables)	12 Months Ended
	Dec. 31, 2022
Payables and Accruals [Abstract]
Schedule of Accrued Payroll and Benefit Costs	Accrued payroll and benefit costs consisted of the following (in thousands): December 31, 2022 2021 Payroll and benefits $ 423,439 $ 449,246 Payroll taxes 33,559 74,117 Workers’ compensation 15,312 16,820 Accrued payroll and benefit costs $ 472,310 $ 540,183

Employee Deferred Compensatio_2

Employee Deferred Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2022
Deferred Compensation Plans [Abstract]
Schedule of Contribution Plans and Nonqualified Plans	The following table presents the Company’s compensation expense related to its qualified defined contribution plans and nonqualified plans (in thousands): Year Ended December 31, 2022 2021 2020 Contribution expense $ 50,406 $ 47,119 $ 42,092 Increase (decrease) in employee deferred compensation expense related to changes in the fair value of trust assets (86,139) 61,078 75,188 $ (35,733) $ 108,197 $ 117,280

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Schedule of Provision for Income Taxes	The provision for income taxes for the years ended December 31, 2022, 2021 and 2020, consisted of the following (in thousands): Year Ended December 31, 2022 2021 2020 Current: Federal $ 137,483 $ 137,862 $ 79,926 State 47,032 47,226 27,401 Foreign 40,204 41,464 20,018 Deferred: Federal and state 13,542 (22,515) (9,089) Foreign 775 1,117 (2,650) $ 239,036 $ 205,154 $ 115,606
Schedule of Income Before Provision for Income Taxes	Income before the provision for income taxes for the years ended December 31, 2022, 2021 and 2020, consisted of the following (in thousands): Year Ended December 31, 2022 2021 2020 Domestic $ 780,624 $ 676,445 $ 378,876 Foreign 116,331 127,335 43,006 $ 896,955 $ 803,780 $ 421,882
Schedule of Difference of Income Taxes from Statutory Federal Income Tax Rates	The income taxes shown above varied from the statutory federal income tax rates for these periods as follows: Year Ended December 31, 2022 2021 2020 Federal U.S. income tax rate 21.0 % 21.0 % 21.0 % State income taxes, net of federal tax benefit 4.7 4.5 4.9 Permanent book/tax differences 0.3 (0.4) 0.3 Compensation book/tax differences 0.7 0.7 1.3 Non-U.S. income taxed at different rates, net of foreign tax credits 1.7 1.9 1.7 Federal tax credits (1.0) (1.6) (1.5) Tax impact of uncertain tax positions 0.1 0.3 0.1 Other, net (0.9) (0.9) (0.4) Effective tax rate 26.6 % 25.5 % 27.4 %
Schedule of Deferred Portion of Tax Provision (Benefit)	The deferred portion of the tax provision (benefit) consisted of the following (in thousands): Year Ended December 31, 2022 2021 2020 Accrued expenses, deducted for tax when paid $ 41,953 $ (32,741) $ (33,997) Internal-use software and capitalized costs (7,930) 462 1,904 Depreciation 4,608 (2,286) 6,732 Unrealized gains (losses) from investments held in employee deferred compensation trusts (26,009) 8,167 14,882 Other, net 1,695 5,000 (1,260) $ 14,317 $ (21,398) $ (11,739)
Schedule of Components of Deferred Income Tax Amounts	The components of the deferred income tax amounts at December 31, 2022 and 2021, were as follows (in thousands): December 31, 2022 2021 Deferred income tax assets Employee deferred compensation and other benefit obligations $ 137,501 $ 155,064 Deferred revenues, foreign royalties and management fees 3,528 16,034 Deferred payroll taxes (CARES Act) — 13,355 Credits and net operating loss carryforwards 24,782 24,811 Stock-based compensation 5,262 3,843 Allowance for credit losses 6,765 6,557 Workers’ compensation 3,207 3,623 Operating lease liabilities 46,145 52,614 Other 17,542 18,565 Total deferred income tax assets 244,732 294,466 Deferred income tax liabilities Amortization of intangible assets (20,465) (24,391) Property and equipment basis differences (19,756) (23,305) Unrealized gains from investments held in employee deferred compensation trusts (7,992) (34,001) Right-of-use assets (37,618) (43,986) Other (12,104) (10,549) Total deferred income tax liabilities (97,935) (136,232) Valuation allowance (23,571) (24,198) Total deferred income tax assets, net $ 123,226 $ 134,036
Schedule of Reconciliation of Total Amounts of Gross Unrecognized Tax Benefits	The following table reconciles the total amounts of gross unrecognized tax benefits from January 1, 2020 to December 31, 2022 (in thousands): December 31, 2022 2021 2020 Balance at beginning of period $ 11,264 $ 9,785 $ 9,354 Gross increases—tax positions in prior years 1,528 3 220 Gross decreases—tax positions in prior years (7) 0 0 Gross increases—tax positions in current year 1,533 3,370 1,678 Lapse of statute of limitations (2,058) (1,894) (1,467) Balance at end of period $ 12,260 $ 11,264 $ 9,785

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2022
Equity [Abstract]
Schedule of Number and Cost of Common Stock Shares Repurchased	The number and the cost of common stock shares repurchased during the years ended December 31, 2022, 2021 and 2020, are reflected in the following table (in thousands): Year Ended December 31, 2022 2021 2020 Common stock repurchased (in shares) 3,319 2,796 2,505 Common stock repurchased $ 280,130 $ 260,410 $ 138,408
Schedule of Number and Cost of Employee Stock Plan Repurchases	The number and the cost of employee stock plan repurchases made during the years ended December 31, 2022, 2021 and 2020, are reflected in the following table (in thousands): Year Ended December 31, 2022 2021 2020 Repurchases related to employee stock plans (in shares) 362 347 366 Repurchases related to employee stock plans $ 37,678 $ 29,817 $ 17,399

Stock Plans (Tables)

Stock Plans (Tables)	12 Months Ended
	Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]
Schedule of Activity Under All Stock Plans and Weighted Average Exercise Prices	The following table reflects activity under all stock plans from December 31, 2019 through December 31, 2022, and the weighted average exercise prices (in thousands, except per share amounts): Non-Executive Officer Performance-Based Awards With Market Conditions Performance-Based Awards Without Market Conditions Total Awards With Performance Condition Number of Weighted Number of Weighted Number of Weighted Number of Weighted Outstanding, December 31, 2019 947 $57.67 236 $74.01 608 $51.74 844 $57.97 Granted 625 $54.92 223 $66.86 70 $47.45 293 $62.22 Restrictions lapsed (526) $54.57 — — (400) $47.45 (400) $47.45 Forfeited (26) $58.37 — — — — — — Outstanding, December 31, 2020 1,020 $57.57 459 $70.53 278 $56.83 737 $65.36 Granted 507 $76.49 167 $88.77 70 $56.83 237 $79.40 Restrictions lapsed (530) $60.10 — — (348) $56.83 (348) $56.83 Forfeited (46) $65.40 — — — — — — Outstanding, December 31, 2021 951 $65.85 626 $75.41 — — 626 $75.41 Granted 410 $116.01 320 $96.20 — — 320 $96.20 Restrictions lapsed (425) $64.27 (442) $74.01 — — (442) $74.01 Forfeited (28) $80.78 — — — — — — Outstanding, December 31, 2022 908 $88.74 504 $89.84 — — 504 $89.84

Net Income Per Share (Tables)

Net Income Per Share (Tables)	12 Months Ended
	Dec. 31, 2022
Earnings Per Share [Abstract]
Schedule of Calculation of Net Income Per Share	The calculation of net income per share for the three years ended December 31, 2022, 2021 and 2020, are reflected in the following table (in thousands, except per share amounts): Year Ended December 31, 2022 2021 2020 Net income $ 657,919 $ 598,626 $ 306,276 Basic: Weighted average shares 108,214 110,482 112,729 Diluted: Weighted average shares 108,214 110,482 112,729 Dilutive effect of potential common shares 957 1,236 589 Diluted weighted average shares 109,171 111,718 113,318 Net income per share: Basic $ 6.08 $ 5.42 $ 2.72 Diluted $ 6.03 $ 5.36 $ 2.70

Business Segments (Tables)

Business Segments (Tables)	12 Months Ended
	Dec. 31, 2022
Segment Reporting [Abstract]
Schedule of Reconciliation of Revenue and Operating Income by Reportable Segment to Consolidated Results	The following table provides a reconciliation of service revenues and segment income by reportable segment to consolidated results (in thousands): Year Ended December 31, 2022 2021 2020 Service revenues Contract talent solutions $ 4,532,847 $ 4,038,743 $ 3,477,335 Permanent placement talent solutions 725,155 569,921 370,109 Protiviti 1,980,140 1,852,780 1,261,556 $ 7,238,142 $ 6,461,444 $ 5,109,000 Segment income Contract talent solutions $ 492,281 $ 393,872 $ 237,279 Permanent placement talent solutions 127,622 106,465 28,799 Protiviti 270,711 305,487 155,680 Combined segment income 890,614 805,824 421,758 Amortization of intangible assets 1,667 2,241 1,219 Interest income, net (8,008) (197) (1,343) Income before income taxes $ 896,955 $ 803,780 $ 421,882
Schedule of Revenue and Long-Lived Assets by Geographic Location	The following tables represent revenues and long-lived assets by geographic location (in thousands): Year Ended December 31, 2022 2021 2020 Service revenues (a) Domestic $ 5,712,330 $ 5,006,525 $ 3,984,742 Foreign (b) 1,525,812 1,454,919 1,124,258 $ 7,238,142 $ 6,461,444 $ 5,109,000 December 31, 2022 2021 Property and equipment, net Domestic $ 90,388 $ 76,757 Foreign 19,299 16,646 $ 109,687 $ 93,403 (a) No customer accounted for more than 10% of the Company’s total service revenues in any year presented. (b) No country represented more than 10% of revenues in any year presented.

Subsequent Events (Tables)

Subsequent Events (Tables)	12 Months Ended
	Dec. 31, 2022
Subsequent Events [Abstract]
Schedule of Subsequent Events	On February 9, 2023, the Company announced the following: Quarterly dividend per share $0.48 Declaration date February 9, 2023 Record date February 24, 2023 Payment date March 15, 2023

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Finite-Lived Intangible Assets [Line Items]
Number of reportable segments | segment	3
Advertising costs	$ 55,600,000	$ 49,300,000	$ 37,200,000
Provision for workers' compensation claims threshold	500,000
Medical claims	1,000,000
Deferred tax valuation allowance
Finite-Lived Intangible Assets [Line Items]
Valuation allowance	$ 23,571,000	$ 24,198,000	$ 24,132,000	$ 21,618,000
Minimum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	2 years
Minimum | Internal-use Software
Finite-Lived Intangible Assets [Line Items]
Internal-use Software, useful life	2 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	5 years
Maximum | Internal-use Software
Finite-Lived Intangible Assets [Line Items]
Internal-use Software, useful life	5 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies - Company's (Income) Loss from Investments Held in Employee Deferred Compensation Trusts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Dividend income	$ (12,637)	$ (23,719)	$ (8,322)
Realized and unrealized (gains) losses	98,776	(37,359)	(66,866)
(Income) loss from investments held in employee deferred compensation trusts	$ 86,139	$ (61,078)	$ (75,188)

Summary of Significant Accoun_6

Summary of Significant Accounting Policies - Composition of Underlying Assets Comprising Company's Deferred Compensation Plans Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	$ 432,734	$ 494,991
Quoted Prices in Active Markets for Identical Assets (Level 1)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	432,734	494,991
Significant Other Observable Inputs (Level 2)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	0	0
Significant Unobservable Inputs (Level 3)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	0	0
Money market funds
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	77,730	66,700
Money market funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	77,730	66,700
Money market funds | Significant Other Observable Inputs (Level 2)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	0	0
Money market funds | Significant Unobservable Inputs (Level 3)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	0	0
Mutual funds - bond
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	31,096	30,750
Mutual funds - bond | Quoted Prices in Active Markets for Identical Assets (Level 1)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	31,096	30,750
Mutual funds - bond | Significant Other Observable Inputs (Level 2)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	0	0
Mutual funds - bond | Significant Unobservable Inputs (Level 3)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	0	0
Mutual funds - stock
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	245,908	303,277
Mutual funds - stock | Quoted Prices in Active Markets for Identical Assets (Level 1)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	245,908	303,277
Mutual funds - stock | Significant Other Observable Inputs (Level 2)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	0	0
Mutual funds - stock | Significant Unobservable Inputs (Level 3)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	0	0
Mutual funds - blend
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	78,000	94,264
Mutual funds - blend | Quoted Prices in Active Markets for Identical Assets (Level 1)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	78,000	94,264
Mutual funds - blend | Significant Other Observable Inputs (Level 2)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	0	0
Mutual funds - blend | Significant Unobservable Inputs (Level 3)
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Employee deferred compensation trust assets	$ 0	$ 0

Summary of Significant Accoun_7

Summary of Significant Accounting Policies - Schedule of Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 21,530	$ 19,617
Charges to expense	8,771	9,464
Deductions	(7,091)	(6,827)
Other, including translation adjustments	(649)	(724)
Ending balance	$ 22,561	$ 21,530

Summary of Significant Accoun_8

Summary of Significant Accounting Policies - Property Plant and Equipment (Details)	12 Months Ended
	Dec. 31, 2022
Computer hardware | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	2 years
Computer hardware | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Computer software | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	2 years
Computer software | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Furniture and equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Furniture and equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years

Revenue Recognition - Schedule

Revenue Recognition - Schedule of Revenue Disaggregated by Functional Specialization and Segments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Revenue from Contract with Customer [Abstract]
Number of reportable segments | segment	3
Guarantee period	90 days
Disaggregation of Revenue [Line Items]
Service revenues	$ 7,238,142	$ 6,461,444	$ 5,109,000
Elimination of intersegment revenues
Disaggregation of Revenue [Line Items]
Service revenues	(552,231)	(580,379)	(239,996)
Finance and accounting
Disaggregation of Revenue [Line Items]
Service revenues	3,185,183	2,764,897	2,256,966
Administration and customer support
Disaggregation of Revenue [Line Items]
Service revenues	1,042,634	1,058,906	764,947
Technology
Disaggregation of Revenue [Line Items]
Service revenues	857,261	795,319	695,418
Total contract talent solutions
Disaggregation of Revenue [Line Items]
Service revenues	4,532,847	4,038,743	3,477,335
Permanent placement talent solutions
Disaggregation of Revenue [Line Items]
Service revenues	725,155	569,921	370,109
Protiviti
Disaggregation of Revenue [Line Items]
Service revenues	$ 1,980,140	$ 1,852,780	$ 1,261,556

Revenue Recognition - Remaining

Revenue Recognition - Remaining Performance Obligation (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Aggregate transaction price allocated to performance obligations	$ 152.6	$ 111.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Aggregate transaction price allocated to performance obligations	$ 138.4
Remaining performance obligation, expected duration	12 months

Revenue Recognition - Schedul_2

Revenue Recognition - Schedule of Contract Liability Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Contract Liabilities [Roll Forward]
Beginning balance	$ 25,601	$ 18,252
Payments in advance of satisfaction of performance obligations	43,830	27,341
Revenue recognized	(47,056)	(20,372)
Other, including translation adjustments	(392)	380
Ending balance	$ 21,983	$ 25,601

Other Current Assets (Details)

Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid expenses	$ 69,394	$ 69,526
Unamortized cloud computing implementation costs	56,108	44,692
Other	49,963	55,646
Other current assets	$ 175,465	$ 169,864

Property and Equipment, Net (De

Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property and equipment, cost	$ 648,385	$ 661,718
Accumulated depreciation	(538,698)	(568,315)
Property and equipment, net	109,687	93,403
Computer hardware
Property, Plant and Equipment [Line Items]
Property and equipment, cost	160,028	157,408
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment, cost	219,863	246,013
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, cost	96,601	93,144
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, cost	$ 171,893	$ 165,153

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Leased Assets [Line Items]
Option to extend lease term	10 years
Option to terminate lease term	1 year
Operating lease expense	$ 89.3	$ 86.6	$ 81.5
Operating leases, not yet commenced, amount	$ 4.1
Minimum
Operating Leased Assets [Line Items]
Remaining lease term	1 year
Operating leases, not yet commenced, term	1 year
Maximum
Operating Leased Assets [Line Items]
Remaining lease term	9 years
Operating leases, not yet commenced, term	6 years

Leases - Lease Cost and Other I

Leases - Lease Cost and Other Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash Flow, Operating Activities, Lessee [Abstract]
Cash paid for operating lease liabilities	$ 93,302	$ 91,253	$ 84,569
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 63,622	$ 51,471	$ 102,007
Weighted average remaining lease term:
Weighted average remaining lease term for operating leases	3 years 6 months	3 years 10 months 24 days	4 years 6 months
Operating leases, weighted average discount rate, percent
Weighted average discount rate for operating leases	2.20%	2.30%	2.60%

Leases - Future Minimum Lease P

Leases - Future Minimum Lease Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2023	$ 90,452
2024	67,170
2025	41,260
2026	27,153
2027	14,182
Thereafter	7,189
Less: Imputed interest	(9,555)
Present value of operating lease liabilities	237,851
Current operating lease liabilities	$ 86,083	$ 83,787

Goodwill (Details)

Goodwill (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Beginning balance		$ 222,855	$ 223,055
Acquisition		15,892
Foreign currency translation adjustments		(937)	(200)
Ending balance	$ 237,810	237,810	222,855
Contract talent solutions
Goodwill [Roll Forward]
Beginning balance		134,584	134,511
Acquisition		0
Foreign currency translation adjustments		(466)	73
Ending balance	134,118	134,118	134,584
Permanent placement talent solutions
Goodwill [Roll Forward]
Beginning balance		26,189	26,180
Acquisition		0
Foreign currency translation adjustments		(91)	9
Ending balance	26,098	26,098	26,189
Protiviti
Goodwill [Roll Forward]
Beginning balance		62,082	62,364
Acquisition	15,900	15,892
Foreign currency translation adjustments		(380)	(282)
Ending balance	$ 77,594	$ 77,594	$ 62,082

Accrued Payroll and Benefit C_3

Accrued Payroll and Benefit Costs - Accrued Payroll/Benefit Costs and Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Payables and Accruals [Abstract]
Payroll and benefits	$ 423,439	$ 449,246
Payroll taxes	33,559	74,117
Workers’ compensation	15,312	16,820
Accrued payroll and benefit costs	$ 472,310	$ 540,183

Employee Deferred Compensatio_3

Employee Deferred Compensation Plans - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred Compensation Plans [Abstract]
Employee deferred compensation trust assets	$ 432,734	$ 494,991
Employee deferred compensation plan obligations	$ 474,111	$ 535,276

Employee Deferred Compensatio_4

Employee Deferred Compensation Plans - Compensation Expense Related to Qualified and Nonqualified Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Deferred Compensation Plans [Abstract]
Contribution expense	$ 50,406	$ 47,119	$ 42,092
Increase (decrease) in employee deferred compensation expense related to changes in the fair value of trust assets	(86,139)	61,078	75,188
Total compensation expense related to qualified defined contribution plans and nonqualified plans	$ (35,733)	$ 108,197	$ 117,280

Income Taxes - Provision for In

Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current:
Federal	$ 137,483	$ 137,862	$ 79,926
State	47,032	47,226	27,401
Foreign	40,204	41,464	20,018
Deferred:
Federal and state	13,542	(22,515)	(9,089)
Foreign	775	1,117	(2,650)
Provision for income taxes	$ 239,036	$ 205,154	$ 115,606

Income Taxes - Income Before Pr

Income Taxes - Income Before Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Domestic	$ 780,624	$ 676,445	$ 378,876
Foreign	116,331	127,335	43,006
Income before income taxes	$ 896,955	$ 803,780	$ 421,882

Income Taxes - Difference of In

Income Taxes - Difference of Income Taxes from Statutory Federal Income Tax Rates (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Federal U.S. income tax rate	21%	21%	21%
State income taxes, net of federal tax benefit	4.70%	4.50%	4.90%
Permanent book/tax differences	0.30%	(0.40%)	0.30%
Compensation book/tax differences	0.70%	0.70%	1.30%
Non-U.S. income taxed at different rates, net of foreign tax credits	1.70%	1.90%	1.70%
Federal tax credits	(1.00%)	(1.60%)	(1.50%)
Tax impact of uncertain tax positions	0.10%	0.30%	0.10%
Other, net	(0.90%)	(0.90%)	(0.40%)
Effective tax rate	26.60%	25.50%	27.40%

Income Taxes - Deferred Portion

Income Taxes - Deferred Portion of Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Accrued expenses, deducted for tax when paid	$ 41,953	$ (32,741)	$ (33,997)
Internal-use software and capitalized costs	(7,930)	462	1,904
Depreciation	4,608	(2,286)	6,732
Unrealized gains (losses) from investments held in employee deferred compensation trusts	(26,009)	8,167	14,882
Other, net	1,695	5,000	(1,260)
Deferred portion of the tax provision (benefit)	$ 14,317	$ (21,398)	$ (11,739)

Income Taxes - Components of De

Income Taxes - Components of Deferred Income Tax Amounts (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred income tax assets
Employee deferred compensation and other benefit obligations	$ 137,501	$ 155,064
Deferred revenues, foreign royalties and management fees	3,528	16,034
Deferred payroll taxes (CARES Act)	0	13,355
Credits and net operating loss carryforwards	24,782	24,811
Stock-based compensation	5,262	3,843
Allowance for credit losses	6,765	6,557
Workers’ compensation	3,207	3,623
Operating lease liabilities	46,145	52,614
Other	17,542	18,565
Total deferred income tax assets	244,732	294,466
Deferred income tax liabilities
Amortization of intangible assets	(20,465)	(24,391)
Property and equipment basis differences	(19,756)	(23,305)
Unrealized gains from investments held in employee deferred compensation trusts	(7,992)	(34,001)
Right-of-use assets	(37,618)	(43,986)
Other	(12,104)	(10,549)
Total deferred income tax liabilities	(97,935)	(136,232)
Valuation allowance	(23,571)	(24,198)
Total deferred income tax assets, net	$ 123,226	$ 134,036

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Taxes [Line Items]
Amount expected to be utilized of tax credit carry forwards expiring in the and beyond the stated year	$ 200
Valuation allowance	23,571	$ 24,198
Unrecognized tax benefits, impact on effective tax rate	12,300	11,300	$ 9,800
Accrued interest and penalties	600	400	500
Increase (decrease) in income tax expense	200	$ (100)	$ 100
Foreign Countries
Income Taxes [Line Items]
Valuation allowance	22,200
Foreign Countries
Income Taxes [Line Items]
Net operating loss carryforwards, foreign	23,100
California Enterprise Zone
Income Taxes [Line Items]
California enterprise zone tax credits	1,600
California Enterprise Zone | California Enterprise Zone
Income Taxes [Line Items]
Valuation allowance	$ 1,400

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Total Amounts of Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of period	$ 11,264	$ 9,785	$ 9,354
Gross increases—tax positions in prior years	1,528	3	220
Gross decreases—tax positions in prior years	(7)	0	0
Gross increases—tax positions in current year	1,533	3,370	1,678
Lapse of statute of limitations	(2,058)	(1,894)	(1,467)
Balance at end of period	$ 12,260	$ 11,264	$ 9,785

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Standby letter of credit | Uncommitted Letter of Credit Facility
Loss Contingencies [Line Items]
Uncommitted letter of credit facility	$ 35,000,000
Debt support standby letters of credit	$ 14,100,000	$ 18,000,000
Service fee percentage	1.20%
Line of Credit | Credit Agreement
Loss Contingencies [Line Items]
Uncommitted letter of credit facility	$ 100,000,000
Revolving Credit Facility | Credit Agreement | Line of Credit
Loss Contingencies [Line Items]
Borrowings under credit agreement	0	0
Standby Letters of Credit Used for Collateral Requirements | Standby letter of credit | Uncommitted Letter of Credit Facility
Loss Contingencies [Line Items]
Letters of credit outstanding	14,100,000	$ 18,000,000
Gentry Case
Loss Contingencies [Line Items]
Allegations loss	$ 0

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Details) - $ / shares shares in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Equity [Abstract]
Maximum number of shares authorized to be repurchased (in shares)	3.8
Dividends declared per share (usd per share)	$ 1.72	$ 1.52	$ 1.36

Stockholders' Equity - Number o

Stockholders' Equity - Number of Cost of Common Stock Shares Repurchased (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Equity [Abstract]
Common stock repurchased (in shares)	3,319	2,796	2,505
Common stock repurchased	$ 280,130	$ 260,410	$ 138,408

Stockholders' Equity - Number a

Stockholders' Equity - Number and Cost of Employee Stock Plan Repurchases (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Equity [Abstract]
Repurchases related to employee stock plans (in shares)	362	347	366
Repurchases related to employee stock plans	$ 37,678	$ 29,817	$ 17,399

Stock Plans - Additional Inform

Stock Plans - Additional Information (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for grants (in years)	3 years
Historical volatility	36.70%
Dividend yield	0%
Risk-free interest rate	2.30%
Historical volatility	2 years 9 months 10 days
Unrecognized compensation cost expected to be recognized over the period (years)	4 years
Total fair value of shares vested	$ 87.8	$ 78	$ 46.2
Total number of available shares to grant	3.6
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Actual shares earned, possible percentage on target award	75%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Actual shares earned, possible percentage on target award	125%
Restricted Stock and Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost, net of estimated forfeitures	$ 85.4	$ 75.3	$ 73.9
Restricted Stock and Stock Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for grants (in years)	3 years
Restricted Stock and Stock Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for grants (in years)	4 years
ROIC Award | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Actual shares earned, possible percentage on target award	0%
ROIC Award | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Actual shares earned, possible percentage on target award	150%

Stock Plans - Activity Under Al

Stock Plans - Activity Under All Stock Plans and Weighted Average Exercise Prices (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Non-Executive Officer Time-Based Awards
Number of Shares/ Units
Outstanding Beginning Balance (in shares)	951	1,020	947
Granted (in shares)	410	507	625
Restrictions lapsed (in shares)	(425)	(530)	(526)
Forfeited (in shares)	(28)	(46)	(26)
Outstanding, Ending Balance (in shares)	908	951	1,020
Weighted Average Grant Date Fair Value
Outstanding Beginning Balance (usd per share)	$ 65.85	$ 57.57	$ 57.67
Granted (usd per share)	116.01	76.49	54.92
Restrictions lapsed (usd per share)	64.27	60.10	54.57
Forfeited (usd per share)	80.78	65.40	58.37
Outstanding Ending Balance (usd per share)	$ 88.74	$ 65.85	$ 57.57
Performance-Based Awards With Market Conditions
Number of Shares/ Units
Outstanding Beginning Balance (in shares)	626	459	236
Granted (in shares)	320	167	223
Restrictions lapsed (in shares)	(442)	0	0
Forfeited (in shares)	0	0	0
Outstanding, Ending Balance (in shares)	504	626	459
Weighted Average Grant Date Fair Value
Outstanding Beginning Balance (usd per share)	$ 75.41	$ 70.53	$ 74.01
Granted (usd per share)	96.20	88.77	66.86
Restrictions lapsed (usd per share)	74.01	0	0
Forfeited (usd per share)	0	0	0
Outstanding Ending Balance (usd per share)	$ 89.84	$ 75.41	$ 70.53
Performance-Based Awards Without Market Conditions
Number of Shares/ Units
Outstanding Beginning Balance (in shares)	0	278	608
Granted (in shares)	0	70	70
Restrictions lapsed (in shares)	0	(348)	(400)
Forfeited (in shares)	0	0	0
Outstanding, Ending Balance (in shares)	0	0	278
Weighted Average Grant Date Fair Value
Outstanding Beginning Balance (usd per share)	$ 0	$ 56.83	$ 51.74
Granted (usd per share)	0	56.83	47.45
Restrictions lapsed (usd per share)	0	56.83	47.45
Forfeited (usd per share)	0	0	0
Outstanding Ending Balance (usd per share)	$ 0	$ 0	$ 56.83
Total Awards With Performance Condition
Number of Shares/ Units
Outstanding Beginning Balance (in shares)	626	737	844
Granted (in shares)	320	237	293
Restrictions lapsed (in shares)	(442)	(348)	(400)
Forfeited (in shares)	0	0	0
Outstanding, Ending Balance (in shares)	504	626	737
Weighted Average Grant Date Fair Value
Outstanding Beginning Balance (usd per share)	$ 75.41	$ 65.36	$ 57.97
Granted (usd per share)	96.20	79.40	62.22
Restrictions lapsed (usd per share)	74.01	56.83	47.45
Forfeited (usd per share)	0	0	0
Outstanding Ending Balance (usd per share)	$ 89.84	$ 75.41	$ 65.36

Net Income Per Share - Calculat

Net Income Per Share - Calculation of Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net income	$ 657,919	$ 598,626	$ 306,276
Basic:
Weighted average shares (in shares)	108,214	110,482	112,729
Diluted:
Weighted average shares (in shares)	108,214	110,482	112,729
Dilutive effect of potential common shares (in shares)	957	1,236	589
Diluted weighted average shares (in shares)	109,171	111,718	113,318
Net income per share:
Basic (usd per share)	$ 6.08	$ 5.42	$ 2.72
Diluted (usd per share)	$ 6.03	$ 5.36	$ 2.70

Business Segments - Additional

Business Segments - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) segment	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	3
Service revenues	$ (7,238,142)	$ (6,461,444)	$ (5,109,000)
Elimination of intersegment revenues
Segment Reporting Information [Line Items]
Service revenues	$ 552,231	$ 580,379	$ 239,996

Business Segments - Reconciliat

Business Segments - Reconciliation of Revenue and Operating Income by Reportable Segment to Consolidated Results (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Service revenues	$ 7,238,142	$ 6,461,444	$ 5,109,000
Segment income	890,614	805,824	421,758
Amortization of intangible assets	1,667	2,241	1,219
Interest income, net	(8,008)	(197)	(1,343)
Income before income taxes	896,955	803,780	421,882
Contract talent solutions
Segment Reporting Information [Line Items]
Service revenues	4,532,847	4,038,743	3,477,335
Segment income	492,281	393,872	237,279
Permanent placement talent solutions
Segment Reporting Information [Line Items]
Service revenues	725,155	569,921	370,109
Segment income	127,622	106,465	28,799
Protiviti
Segment Reporting Information [Line Items]
Service revenues	1,980,140	1,852,780	1,261,556
Segment income	$ 270,711	$ 305,487	$ 155,680

Business Segments - Revenue and

Business Segments - Revenue and Long-Lived Assets by Geographic Location (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Service revenues	$ 7,238,142	$ 6,461,444	$ 5,109,000
Property and equipment, net	109,687	93,403
Domestic
Revenues from External Customers and Long-Lived Assets [Line Items]
Service revenues	5,712,330	5,006,525	3,984,742
Property and equipment, net	90,388	76,757
Foreign
Revenues from External Customers and Long-Lived Assets [Line Items]
Service revenues	1,525,812	1,454,919	$ 1,124,258
Property and equipment, net	$ 19,299	$ 16,646

Subsequent Events (Details)

Subsequent Events (Details) - $ / shares shares in Millions		12 Months Ended
	Feb. 09, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Subsequent Event [Line Items]
Maximum number of shares authorized to be repurchased (in shares)		3.8
Quarterly dividend per share (usd per share)		$ 1.72	$ 1.52	$ 1.36
Subsequent Event
Subsequent Event [Line Items]
Additional number of shares authorized to be repurchased (in shares)	10
Quarterly dividend per share (usd per share)	$ 0.48

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Allowance for credit losses
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 21,530	$ 19,617	$ 23,443
Charged to Expenses	8,771	9,464	4,200
Deductions	(7,091)	(6,827)	(7,906)
Translation Adjustments	(649)	(724)	(120)
Balance at End of Period	22,561	21,530	19,617
Allowance for credit losses | Cumulative Effect, Period of Adoption, Adjusted Balance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period		19,617
Balance at End of Period			19,617
Deferred tax valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	24,198	24,132	21,618
Charged to Expenses	2,033	5,635	3,462
Deductions	(1,467)	(3,936)	(2,333)
Translation Adjustments	(1,193)	(1,633)	1,385
Balance at End of Period	$ 23,571	$ 24,198	$ 24,132