Business Segments (Tables)

3 Months Ended

Mar. 31, 2018

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 months ended March 31, 2018 and 2017 (in thousands):

	Three Months Ended   March 31,
	2018			2017
Net service revenues
Temporary and consultant staffing	$	1,066,288		$	987,606
Permanent placement staffing	121,400			103,633
Risk consulting and internal audit services	207,645			196,131
	$	1,395,333		$	1,287,370
Operating income
Temporary and consultant staffing	$	96,723		$	90,371
Permanent placement staffing	22,379			18,302
Risk consulting and internal audit services	15,265			16,906
	134,367			125,579
Amortization of intangible assets	463			301
Interest income, net	(735		)	(223		)
Income before income taxes	$	134,639		$	125,501