Segment Reporting

6 Months Ended

Jun. 30, 2016

Segment Reporting [Abstract]

Segment Reporting

13. Segment Reporting

On Assignment provides services through two operating segments, the Apex Segment and the Oxford Segment, with each addressing different sectors of the professional staffing market with distinct business models attuned to those sectors. Businesses in the Apex Segment predominately serve markets with a large and local talent pool, and provide a full range of skills through a network of local offices where clients most value relationship, speed, reliability and price. The Apex Segment provides a broad spectrum of technical, scientific and creative professionals for temporary, contract-to-hire and permanent placement positions to Fortune 1000 and mid-market clients across the United States. Our businesses in this segment include Apex Systems, Lab Support and Creative Circle. Businesses in the Oxford Segment predominately serve markets with higher-end, specialized skills through a combination of national recruiting centers and local offices where clients most value the unique skill of the candidate and speed of response. The Oxford Segment provides specialized, niche staffing and consulting services in select skill and geographic markets. Our businesses in this segment include Oxford, CyberCoders and Life Sciences Europe.

Effective January 1, 2016, there were two changes to the Company's segment configuration: 1) the Apex Segment now includes a small clinical research business which was previously included in the Oxford Segment, and 2) costs associated with personnel located at our Corporate office that have shared services roles and support certain of our businesses, primarily within the Oxford Segment, are now presented in the segments they support whereas previously they were presented within Corporate. For comparability purposes, prior periods have been adjusted to reflect these changes.

The Company’s management evaluates the performance of each segment primarily based on revenues, gross profit and operating income. The information in the following tables is derived directly from the segments’ internal financial reporting used for corporate management purposes. The Company's management does not evaluate, manage or measure performance of segments using asset information, and such information is not readily available. Accordingly, assets by reportable segment are not disclosed.

The following tables present revenues, gross profit, operating income and amortization by reportable segment (in thousands):

	Three Months Ended									Three Months Ended
	June 30, 2016									June 30, 2015
	Apex		Oxford		Corporate(1)			Total		Apex		Oxford		Corporate(1)			Total
Revenues	$	453,723	$	154,365	$	—		$	608,088	$	340,480	$	144,843	$	—		$	485,323
Gross profit	138,165		63,921		—			202,086		98,274		60,260		—			158,534
Operating income	50,190		13,856		(13,342		)	50,704		34,265		15,825		(17,380		)	32,710
Amortization	8,590		1,442		—			10,032		5,384		1,573		—			6,957

	Six Months Ended									Six Months Ended
	June 30, 2016									June 30, 2015
	Apex		Oxford		Corporate(1)			Total		Apex		Oxford		Corporate(1)			Total
Revenues	$	886,878	$	303,250	$	—		$	1,190,128	$	636,451	$	278,917	$	—		$	915,368
Gross profit	264,309		125,559		—			389,868		178,426		115,983		—			294,409
Operating income	90,176		26,616		(28,331		)	88,461		57,161		28,538		(27,918		)	57,781
Amortization	17,180		2,996		—			20,176		8,906		2,920		—			11,826

(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.

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

	Three Months Ended								Six Months Ended
	June 30,								June 30,
	2016		%		2015		%		2016		%		2015		%
Revenues:
Assignment	$	574,323	94.4	%	$	456,592	94.1	%	$	1,123,875	94.4	%	$	862,733	94.2	%
Permanent placement	33,765		5.6	%	28,731		5.9	%	66,253		5.6	%	52,635		5.8	%
	$	608,088	100.0	%	$	485,323	100.0	%	$	1,190,128	100.0	%	$	915,368	100.0	%

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								Six Months Ended
	June 30,								June 30,
	2016		%		2015		%		2016		%		2015		%
Revenues:
Domestic	$	578,165	95.1	%	$	462,989	95.4	%	$	1,132,603	95.2	%	$	873,745	95.5	%
Foreign	29,923		4.9	%	22,334		4.6	%	57,525		4.8	%	41,623		4.5	%
	$	608,088	100.0	%	$	485,323	100.0	%	$	1,190,128	100.0	%	$	915,368	100.0	%