GOODWILL AND INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill by Reportable Business Segment

Goodwill by reportable business segments from December 31, 2014 to June 30, 2015 (in thousands):

	North America			Europe		Asia Pacific			Total
Goodwill:
Gross value at December 31, 2014	$	428,511		$	44,433	$	5,895		$	478,839
Accumulated impairment losses	(92,423		)	—		—			(92,423		)
Carrying value at December 31, 2014	336,088			44,433		5,895			386,416
Modality acquisition	2,153			29,858		177			32,188
Adjustments to prior acquisitions	580			—		—			580
Impact of currency fluctuations	(1,442		)	237		(280		)	(1,485		)
Carrying value at June 30, 2015	$	337,379		$	74,528	$	5,792		$	417,699

Schedule of Other Intangible Assets

Summarized below are the carrying value and accumulated amortization, if applicable, by intangible asset class (in thousands):

	June 30, 2015							December 31, 2014
	Gross Carrying Value		Accumulated Amortization			Net Carrying Value		Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Intangible assets:
Customer lists	$	142,481	$	(73,712	)	$	68,769	$	138,149	$	(69,904	)	$	68,245
Non-compete agreements	15,010		(8,041		)	6,969		13,170		(6,891		)	6,279
Developed technology	23,414		(3,475		)	19,939		23,000		(1,843		)	21,157
Other	10,450		(3,054		)	7,396		8,809		(2,140		)	6,669
Total other intangible assets	$	191,355	$	(88,282	)	$	103,073	$	183,128	$	(80,778	)	$	102,350

Schedule of Estimated Future Annual Amortization Expense Related to Other Intangible Assets

Estimated annual amortization expense of our other intangible assets for the next five years is as follows (in thousands):

Year	Estimated Annual Amortization Expense
2015	$	17,178
2016	$	16,869
2017	$	15,068
2018	$	13,522
2019	$	11,755