GOODWILL AND INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill by Reportable Business Segment

Goodwill by reportable business segment at December 31, 2014, 2013 and 2012 (in thousands):

	North America			Europe			Asia Pacific			Total
Gross value at December 31, 2012	$	364,563		$	20,216		$	5,417		$	390,196
Accumulated impairment losses prior to December 31, 2012	(92,423		)	—			—			(92,423		)
Carrying value at December 31, 2012	272,140			20,216			5,417			297,773
Acquisitions	15,049			29,941			1,751			46,741
Impact of currency fluctuations	(1,455		)	(953		)	(724		)	(3,132		)
Carrying value at December 31, 2013	285,734			49,204			6,444			341,382
Acquisitions	52,883			920			—			53,803
Adjustments to prior acquisitions	(625		)	(459		)	(100		)	(1,184		)
Impact of currency fluctuations	(1,904		)	(5,232		)	(449		)	(7,585		)
Carrying value at December 31, 2014	$	336,088		$	44,433		$	5,895		$	386,416

Schedule of Other Intangible Assets

Summarized below are the carrying values and accumulated amortization by intangible asset class at December 31, 2014 and 2013 (in thousands):

	2014							2013
	Gross carrying value		Accumulated amortization			Net carrying value		Gross carrying value		Accumulated amortization			Net carrying value
Intangible assets:
Customer lists	$	138,149	$	(69,904	)	$	68,245	$	131,943	$	(63,564	)	$	68,379
Non-compete agreements	13,170		(6,891		)	6,279		9,436		(5,851		)	3,585
Developed technology	23,000		(1,843		)	21,157		1,000		(1,000		)	—
Other	8,809		(2,140		)	6,669		8,003		(1,330		)	6,673
Total intangible assets	$	183,128	$	(80,778	)	$	102,350	$	150,382	$	(71,745	)	$	78,637

Schedule of Other Intangible Assets Amortization Expense

Estimated amortization expense for the next five years is as follows (in thousands):

Year	Estimated amortization expense
2015	$15,177
2016	$14,746
2017	$13,742
2018	$12,838
2019	$11,122