Goodwill and Identifiable Assets (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill for the years ended December 31, 2014 and 2013 are as follows (in thousands):

	Apex			Oxford			Life Sciences Europe			Total
Balance as of December 31, 2012
Gross goodwill	$	289,712		$	150,619		$	3,753		$	444,084
Accumulated impairment	—			—			—			—
	289,712			150,619			3,753			444,084
CyberCoders Acquisition (see Note 4)	—			69,018			—			69,018
Transfers	—			513			—			513
Translation adjustment	—			—			811			811
Balance as of December 31, 2013
Gross goodwill	289,712			220,150			4,564			514,426
Accumulated impairment	—			—			—			—
	289,712			220,150			4,564			514,426
Translation adjustment	(1,761		)	(120		)	(485		)	(2,366		)
Balance as of December 31, 2014
Gross goodwill	287,951			220,030			4,079			512,060
Accumulated impairment	—			—			—			—
	$	287,951		$	220,030		$	4,079		$	512,060

Schedule of Acquired Intangible Assets

As of December 31, 2014 and 2013, the Company had the following acquired intangible assets (in thousands):

		2014						2013
	Estimated Useful Life	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Subject to amortization:
Customer relations	3 months – 10 years	$	101,141	$	53,434	$	47,707	$	101,697	$	38,930	$	62,767
Contractor relations	2 - 7 years	39,332		32,021		7,311		39,384		28,321		11,063
Non-compete agreements	2 - 7 years	3,654		1,922		1,732		3,743		1,362		2,381
In-use software	6 years	18,900		3,366		15,534		18,900		263		18,637
		163,027		90,743		72,284		163,724		68,876		94,848
Not subject to amortization:
Trademarks		178,325		—		178,325		178,775		—		178,775
Total		$	341,352	$	90,743	$	250,609	$	342,499	$	68,876	$	273,623

Schedule of Estimated Future Amortization Expense

Estimated amortization for each of the next five fiscal years and thereafter are as follows (in thousands):

2015	$	19,381
2016	16,366
2017	12,078
2018	9,669
2019	7,972
Thereafter	6,818
	$	72,284