Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2016

Segment Reporting Information [Line Items]

Schedule of Segment Reporting Information, by Segment



	Three Months Ended
	March 31, 2016
	Apex		Oxford		Corporate⁽¹⁾			Total
Revenues	$	433,155	$	148,885	$	—		$	582,040
Gross profit	126,144		61,638		—			187,782
Operating income	39,986		12,760		(14,989		)	37,757
Amortization	8,590		1,554		—			10,144



	Three Months Ended
	March 31, 2015
	Apex		Oxford⁽²⁾		Corporate⁽¹⁾			Total
Revenues	$	295,971	$	134,074	$	—		$	430,045
Gross profit	80,152		55,723		—			135,875
Operating income	22,896		12,713		(10,538		)	25,071
Amortization	3,522		1,347		—			4,869


(1)	Corporate expenses primarily consist of consolidated stock-based compensation expense, compensation for corporate employees, acquisition, integration and strategic planning expenses, public company expenses, and depreciation expense for corporate assets.


(2)	During the quarter ended June 30, 2015, due to management changes, the Company realigned its former Life Sciences Europe Segment to be included in the Oxford Segment. Prior periods have been adjusted to reflect this change.

Revenue by Type [Table Text Block]

The following table presents revenues by type (in thousands):



	Three Months Ended
	March 31,
	2016		%		2015		%
Revenues:
Assignment	$	549,552	94.4	%	$	406,141	94.4	%
Permanent placement	32,488		5.6	%	23,904		5.6	%
	$	582,040	100.0	%	$	430,045	100.0	%

Schedule of Revenue by Geographical Areas

The Company operates internationally, with operations mainly in the United States, Europe, and Canada. The following table presents revenues by geographic location (in thousands):



	Three Months Ended
	March 31,
	2016		%		2015		%
Revenues:
Domestic	$	554,438	95.3	%	$	410,756	95.5	%
Foreign	27,602		4.7	%	19,289		4.5	%
	$	582,040	100.0	%	$	430,045	100.0	%