Business Segments (Tables)

9 Months Ended

Sep. 30, 2015

Segment Reporting [Abstract]

Reconciliation of Revenue and Operating Income by Reportable Segment to Consolidated Results

The following table provides a reconciliation of revenue and operating income by reportable segment to consolidated results for the three and nine months ended September 30, 2015 and 2014 (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2015			2014			2015			2014
Net service revenues
Temporary and consultant staffing	$	999,822		$	954,225		$	2,922,942		$	2,722,833
Permanent placement staffing	110,748			102,345			319,744			297,797
Risk consulting and internal audit services	202,148			167,738			547,653			452,934
	$	1,312,718		$	1,224,308		$	3,790,339		$	3,473,564
Operating income
Temporary and consultant staffing	$	102,991		$	97,660		$	300,404		$	263,901
Permanent placement staffing	24,377			21,380			67,460			61,103
Risk consulting and internal audit services	31,698			19,213			68,451			39,011
	159,066			138,253			436,315			364,015
Amortization of intangible assets	—			—			—			557
Interest income, net	(240		)	(108		)	(400		)	(570		)
Income before income taxes	$	159,306		$	138,361		$	436,715		$	364,028