Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Schedule of Revenue Disaggregated by Line of Business

The following table presents the Company’s revenues disaggregated by line of business (in thousands):

	Year Ended December 31,
	2021		2020		2019
Accountemps	$	1,870,563	$	1,558,024	$	1,985,221
OfficeTeam	1,058,906		764,947		1,040,755
Robert Half Technology	795,319		695,418		765,831
Robert Half Management Resources	894,334		698,942		792,757
Elimination of intersegment revenues (a)	(580,379)		(239,996)		(172,439)
Temporary and consultant staffing	4,038,743		3,477,335		4,412,125
Permanent placement staffing	569,921		370,109		533,432
Risk consulting and internal audit services	1,852,780		1,261,556		1,128,875
Service revenues	$	6,461,444	$	5,109,000	$	6,074,432

(a)Service revenues for Accountemps, OfficeTeam, Robert Half Technology and Robert Half Management Resources include intersegment revenues, which represent revenues from services provided to the Company’s risk consulting and internal audit services segment in connection with the Company’s blended business solutions. Intersegment revenues for each line of business 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, 2018, through December 31, 2021 (in thousands):

	Contract
	Liabilities
Balance as of December 31, 2018	$	12,997
Payments in advance of satisfaction of performance obligations	13,030
Revenue recognized	(12,072)
Other, including translation adjustments	(1,007)
Balance as of December 31, 2019	$	12,948
Payments in advance of satisfaction of performance obligations	25,614
Revenue recognized	(20,687)
Other, including translation adjustments	377
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