Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 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 March 31,
	2018			2017
Accountemps		$	471,589		$	436,539
OfficeTeam		261,152			236,179
Robert Half Technology		160,062			157,439
Robert Half Management Resources		173,485			157,449
Temporary and consulting staffing revenues		1,066,288			987,606
Permanent placement staffing revenues		121,400			103,633
Risk consulting and internal audit revenues		207,645			196,131
Net service revenues		$	1,395,333		$	1,287,370

Schedule of Contract Liability Activity

The following table sets forth the activity in contract liabilities from January 1, 2018 through March 31, 2018 (in thousands):

	March 31, 2018
Balance at beginning of period		$	9,003
Payments in advance of satisfaction of performance obligations		5,689
Revenue recognized		(3,842		)
Other, including translation adjustments		(1,977		)
Balance at end of period		$	8,873