GOODWILL AND INTANGIBLE ASSETS (Details) (USD $)	9 Months Ended
	Sep. 30, 2013		Dec. 31, 2012
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Gross, Beginning Balance	$ 255,717,000
(Decrease)/ Increase (1)	1,391,000	[1]
Finite-Lived Intangible Assets, Gross, Ending Balance	257,108,000
Finite-Lived Intangible Assets, Accumulated Amortization	(102,999,000)
(Increase)/ Decrease (2)	(18,096,000)	[2]
Finite-Lived Intangible Assets, Accumulated Amortization	(121,095,000)
Finite-Lived Intangible Assets, Net	136,013,000		152,718,000
Cumulative Translation Adjustment, Net of Tax, Period Increase (Decrease), Accumulated Amortization, Carrying Value	1,000,000
Cumulative Translation Adjustment, Net of Tax, Period Increase (Decrease), Accumulated Amortization	(200,000)
Expected future annual amortization expense [Abstract]
2013, remainder thereof	5,670,000
2014	20,984,000
2015	14,828,000
2016	13,305,000
2017	11,627,000
Thereafter	69,599,000
Total	136,013,000		152,718,000
Goodwill [Roll Forward]
Goodwill, Beginning Balance	159,736,000
Effects of foreign currency change	1,042,000
Goodwill. Ending Balance	160,778,000
Customer relationships
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Gross, Beginning Balance	76,874,000
(Decrease)/ Increase (1)	476,000	[1]
Finite-Lived Intangible Assets, Gross, Ending Balance	77,350,000
Finite-Lived Intangible Assets, Accumulated Amortization	(14,346,000)
(Increase)/ Decrease (2)	(5,367,000)	[2]
Finite-Lived Intangible Assets, Accumulated Amortization	(19,713,000)
Finite-Lived Intangible Assets, Net	57,637,000		62,528,000
Weighted Average Useful Life	11 years
Expected future annual amortization expense [Abstract]
Total	57,637,000		62,528,000
Developed technologies
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Gross, Beginning Balance	76,814,000
(Decrease)/ Increase (1)	446,000	[1]
Finite-Lived Intangible Assets, Gross, Ending Balance	77,260,000
Finite-Lived Intangible Assets, Accumulated Amortization	(18,489,000)
(Increase)/ Decrease (2)	(4,412,000)	[2]
Finite-Lived Intangible Assets, Accumulated Amortization	(22,901,000)
Finite-Lived Intangible Assets, Net	54,359,000		58,325,000
Weighted Average Useful Life	10 years
Expected future annual amortization expense [Abstract]
Total	54,359,000		58,325,000
Trademarks and tradenames
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Gross, Beginning Balance	17,818,000
(Decrease)/ Increase (1)	8,000	[1]
Finite-Lived Intangible Assets, Gross, Ending Balance	17,826,000
Finite-Lived Intangible Assets, Accumulated Amortization	(3,009,000)
(Increase)/ Decrease (2)	(2,545,000)	[2]
Finite-Lived Intangible Assets, Accumulated Amortization	(5,554,000)
Finite-Lived Intangible Assets, Net	12,272,000		14,809,000
Weighted Average Useful Life	5 years
Expected future annual amortization expense [Abstract]
Total	12,272,000		14,809,000
Other contractual agreements
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Gross, Beginning Balance	3,055,000
(Decrease)/ Increase (1)	21,000	[1]
Finite-Lived Intangible Assets, Gross, Ending Balance	3,076,000
Finite-Lived Intangible Assets, Accumulated Amortization	(785,000)
(Increase)/ Decrease (2)	(1,159,000)	[2]
Finite-Lived Intangible Assets, Accumulated Amortization	(1,944,000)
Finite-Lived Intangible Assets, Net	1,132,000		2,270,000
Weighted Average Useful Life	2 years
Expected future annual amortization expense [Abstract]
Total	1,132,000		2,270,000
Licenses
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Gross, Beginning Balance	81,156,000
(Decrease)/ Increase (1)	440,000	[1]
Finite-Lived Intangible Assets, Gross, Ending Balance	81,596,000
Finite-Lived Intangible Assets, Accumulated Amortization	(66,370,000)
(Increase)/ Decrease (2)	(4,613,000)	[2]
Finite-Lived Intangible Assets, Accumulated Amortization	(70,983,000)
Finite-Lived Intangible Assets, Net	10,613,000		14,786,000
Weighted Average Useful Life	14 years
Expected future annual amortization expense [Abstract]
Total	$ 10,613,000		$ 14,786,000

[1] Includes an increase in carrying value of $1.0 million related to foreign currency translation

[2] accumulated amortization was a decrease of $0.2 million.