GOODWILL AND INTANGIBLE ASSETS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Definite lived intangible assets [Abstract]
Beginning Carrying Value Of Finite-Lived Intangible Assets	$ 255,717
Finite-Lived Intangible Assets Acquired	(963)
Ending Carrying Value Of Finite-Lived Intangible Assets	254,754
Finite-Lived Intangible Assets, Accumulated Amortization	(102,999)
Amortization of Intangible Assets	(5,970)
Finite-Lived Intangible Assets, Accumulated Amortization	(108,969)
Finite-Lived Intangible Assets, Net, Beginning Balance	152,718
Finite-Lived Intangible Assets, Net, Ending Balance	145,785
Weighted Average Useful Life	12 years
Cumulative Translation Adjustment, Net of Tax, Period Increase (Decrease), Accumulated Amortization, Carrying Value	1,298
Cumulative Translation Adjustment, Net of Tax, Period Increase (Decrease), Accumulated Amortization	71
Expected future annual amortization expense [Abstract]
2013, remainder thereof	17,470
2014	20,770
2015	14,628
2016	13,775
2017	12,098
Thereafter	67,044
Total	145,785
Schedule of Goodwill [Rollforward}
Balance at December 31, 2012	159,736
Goodwill, Translation Adjustments	(1,398)
Balance at December 31, 2012	158,338
Customer relationships [Member]
Definite lived intangible assets [Abstract]
Beginning Carrying Value Of Finite-Lived Intangible Assets	76,874
Finite-Lived Intangible Assets Acquired	(650)
Ending Carrying Value Of Finite-Lived Intangible Assets	76,224
Finite-Lived Intangible Assets, Accumulated Amortization	(14,346)
Amortization of Intangible Assets	(2,088)
Finite-Lived Intangible Assets, Accumulated Amortization	(16,434)
Finite-Lived Intangible Assets, Net, Beginning Balance	62,528
Finite-Lived Intangible Assets, Net, Ending Balance	59,790
Expected future annual amortization expense [Abstract]
Total	59,790
Developed technologies [Member]
Definite lived intangible assets [Abstract]
Beginning Carrying Value Of Finite-Lived Intangible Assets	76,814
Finite-Lived Intangible Assets Acquired	(649)
Ending Carrying Value Of Finite-Lived Intangible Assets	76,165
Finite-Lived Intangible Assets, Accumulated Amortization	(18,489)
Amortization of Intangible Assets	(1,983)
Finite-Lived Intangible Assets, Accumulated Amortization	(20,472)
Finite-Lived Intangible Assets, Net, Beginning Balance	58,325
Finite-Lived Intangible Assets, Net, Ending Balance	55,693
Expected future annual amortization expense [Abstract]
Total	55,693
Trademarks and tradenames [Member]
Definite lived intangible assets [Abstract]
Beginning Carrying Value Of Finite-Lived Intangible Assets	17,818
Finite-Lived Intangible Assets Acquired	(10)
Ending Carrying Value Of Finite-Lived Intangible Assets	17,808
Finite-Lived Intangible Assets, Accumulated Amortization	(3,009)
Amortization of Intangible Assets	(1,261)
Finite-Lived Intangible Assets, Accumulated Amortization	(4,270)
Finite-Lived Intangible Assets, Net, Beginning Balance	14,809
Finite-Lived Intangible Assets, Net, Ending Balance	13,538
Expected future annual amortization expense [Abstract]
Total	13,538
Other contractual agreements [Member]
Definite lived intangible assets [Abstract]
Beginning Carrying Value Of Finite-Lived Intangible Assets	3,055
Finite-Lived Intangible Assets Acquired	(30)
Ending Carrying Value Of Finite-Lived Intangible Assets	3,025
Finite-Lived Intangible Assets, Accumulated Amortization	(785)
Amortization of Intangible Assets	(615)
Finite-Lived Intangible Assets, Accumulated Amortization	(1,400)
Finite-Lived Intangible Assets, Net, Beginning Balance	2,270
Finite-Lived Intangible Assets, Net, Ending Balance	1,625
Expected future annual amortization expense [Abstract]
Total	1,625
Licenses [Member]
Definite lived intangible assets [Abstract]
Beginning Carrying Value Of Finite-Lived Intangible Assets	81,156
Finite-Lived Intangible Assets Acquired	376
Ending Carrying Value Of Finite-Lived Intangible Assets	81,532
Finite-Lived Intangible Assets, Accumulated Amortization	(66,370)
Amortization of Intangible Assets	(23)
Finite-Lived Intangible Assets, Accumulated Amortization	(66,393)
Finite-Lived Intangible Assets, Net, Beginning Balance	14,786
Finite-Lived Intangible Assets, Net, Ending Balance	15,139
Expected future annual amortization expense [Abstract]
Total	$ 15,139