Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2021

Revenue from Contract with Customer [Abstract]

Schedule of Revenue Disaggregated by Line of Business

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Accountemps	$	453,342	$	331,542	$	870,448	$	821,426
OfficeTeam	263,192		136,299		483,665		376,278
Robert Half Technology	194,233		162,028		366,406		358,680
Robert Half Management Resources	210,550		165,031		393,878		376,908
Elimination of intersegment revenues (a)	(143,036)		(41,514)		(246,840)		(87,786)
Temporary and consultant staffing	978,281		753,386		1,867,557		1,845,506
Permanent placement staffing	143,640		71,030		255,344		191,519
Risk consulting and internal audit services	458,660		283,910		856,060		577,992
Service revenues	$	1,580,581	$	1,108,326	$	2,978,961	$	2,615,017

(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 January 1, 2020, through June 30, 2021 (in thousands):

	Contract Liabilities
Balance as of January 1, 2020	$	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	20,654
Revenue recognized	(26,454)
Other, including translation adjustments	730
Balance as of June 30, 2021	$	13,182