Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2018

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):

	Three Months Ended   September 30,						Nine Months Ended   September 30,
	2018			2017			2018		2017
Accountemps		$	479,415		$	443,376	$	1,431,567		$	1,319,649
OfficeTeam		265,235			246,207		794,749			726,755
Robert Half Technology		176,552			157,038		508,060			472,309
Robert Half Management Resources		162,564			158,187		503,652			471,997
Temporary and consulting staffing		1,083,766			1,004,808		3,238,028			2,990,710
Permanent placement staffing		129,667			111,333		386,105			327,619
Risk consulting and internal audit services		252,793			208,568		694,480			602,178
Net service revenues		$	1,466,226		$	1,324,709	$	4,318,613		$	3,920,507

Schedule of Contract Liability Activity

The following table sets forth the activity in contract liabilities from January 1, 2018 through September 30, 2018 (in thousands):

	September 30, 2018
Balance at beginning of period		$	9,003
Payments in advance of satisfaction of performance obligations		10,733
Revenue recognized		(9,131		)
Other, including translation adjustments		(1,673		)
Balance at end of period		$	8,932