Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2019

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):

	Years Ended December 31,
	2019		2018		2017
Accountemps	$	1,946,404	$	1,915,054	$	1,765,666
OfficeTeam	1,037,341		1,063,238		984,873
Robert Half Technology	722,535		682,889		629,278
Robert Half Management Resources	705,845		669,385		631,225
Temporary and consulting staffing	4,412,125		4,330,566		4,011,042
Permanent placement staffing	533,432		511,989		439,214
Risk consulting and internal audit services	1,128,875		957,716		816,533
Service revenues	$	6,074,432	$	5,800,271	$	5,266,789

Schedule of Contract Liability Activity

The following table sets forth the activity in contract liabilities from January 1, 2018 through December 31, 2019 (in thousands):

	Contract
	Liabilities
Balance as of January 1, 2018	$	9,003
Payments in advance of satisfaction of performance obligations	12,170
Revenue recognized	(10,542)
Other, including translation adjustments	2,366
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