GOODWILL AND INTANGIBLE ASSETS (Details) (USD $)	6 Months Ended
	Jun. 30, 2013		Dec. 31, 2012
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Gross, Beginning Balance	$ 255,717,000
(Decrease)/ Increase (1)	(135,000)	[1]
Finite-Lived Intangible Assets, Gross, Ending Balance	255,582,000
Finite-Lived Intangible Assets, Accumulated Amortization	(102,999,000)
(Increase)/ Decrease (2)	(11,973,000)	[2]
Finite-Lived Intangible Assets, Accumulated Amortization	(114,972,000)
Finite-Lived Intangible Assets, Net	140,610,000		152,718,000
Cumulative Translation Adjustment, Net of Tax, Period Increase (Decrease), Accumulated Amortization, Carrying Value	600,000
Expected future annual amortization expense [Abstract]
2013, remainder thereof	11,577,000
2014	20,843,000
2015	14,696,000
2016	13,173,000
2017	11,498,000
Thereafter	68,823,000
Total	140,610,000		152,718,000
Goodwill [Roll Forward]
Goodwill, Beginning Balance	159,736,000
Effects of foreign currency change	(628,000)
Goodwill. Ending Balance	159,108,000
Customer relationships
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Gross, Beginning Balance	76,874,000
(Decrease)/ Increase (1)	(294,000)	[1]
Finite-Lived Intangible Assets, Gross, Ending Balance	76,580,000
Finite-Lived Intangible Assets, Accumulated Amortization	(14,346,000)
(Increase)/ Decrease (2)	(3,529,000)	[2]
Finite-Lived Intangible Assets, Accumulated Amortization	(17,875,000)
Finite-Lived Intangible Assets, Net	58,705,000		62,528,000
Weighted Average Useful Life	11 years
Expected future annual amortization expense [Abstract]
Total	58,705,000		62,528,000
Developed technologies
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Gross, Beginning Balance	76,814,000
(Decrease)/ Increase (1)	(304,000)	[1]
Finite-Lived Intangible Assets, Gross, Ending Balance	76,510,000
Finite-Lived Intangible Assets, Accumulated Amortization	(18,489,000)
(Increase)/ Decrease (2)	(2,902,000)	[2]
Finite-Lived Intangible Assets, Accumulated Amortization	(21,391,000)
Finite-Lived Intangible Assets, Net	55,119,000		58,325,000
Weighted Average Useful Life	10 years
Expected future annual amortization expense [Abstract]
Total	55,119,000		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)	(4,000)	[1]
Finite-Lived Intangible Assets, Gross, Ending Balance	17,814,000
Finite-Lived Intangible Assets, Accumulated Amortization	(3,009,000)
(Increase)/ Decrease (2)	(1,694,000)	[2]
Finite-Lived Intangible Assets, Accumulated Amortization	(4,703,000)
Finite-Lived Intangible Assets, Net	13,111,000		14,809,000
Weighted Average Useful Life	5 years
Expected future annual amortization expense [Abstract]
Total	13,111,000		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)	(14,000)	[1]
Finite-Lived Intangible Assets, Gross, Ending Balance	3,041,000
Finite-Lived Intangible Assets, Accumulated Amortization	(785,000)
(Increase)/ Decrease (2)	(756,000)	[2]
Finite-Lived Intangible Assets, Accumulated Amortization	(1,541,000)
Finite-Lived Intangible Assets, Net	1,500,000		2,270,000
Weighted Average Useful Life	2 years
Expected future annual amortization expense [Abstract]
Total	1,500,000		2,270,000
Licenses
Finite-lived Intangible Assets [Roll Forward]
Finite-Lived Intangible Assets, Gross, Beginning Balance	81,156,000
(Decrease)/ Increase (1)	481,000	[1]
Finite-Lived Intangible Assets, Gross, Ending Balance	81,637,000
Finite-Lived Intangible Assets, Accumulated Amortization	(66,370,000)
(Increase)/ Decrease (2)	(3,092,000)	[2]
Finite-Lived Intangible Assets, Accumulated Amortization	(69,462,000)
Finite-Lived Intangible Assets, Net	12,175,000		14,786,000
Weighted Average Useful Life	14 years
Expected future annual amortization expense [Abstract]
Total	$ 12,175,000		$ 14,786,000

[1] Includes a decrease in carrying value of $0.6 million related to foreign currency translation

[2] accumulated amortization was not significant.