RESTRUCTURING CHARGES - Textual (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 23,986	$ 20,064	$ 5,253
Other Charges		(495)
Restructuring Reserve, Settled with Cash	9,662	21,461	3,963
Restructuring Charges, Net of Change in Estimate	(23,491)	(21,656)	(5,253)
Other Restructuring Costs		1,592
Employee termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	23,500
Restructuring Reserve, Settled with Cash			(4,000)
Employee termination costs in fourth quarter of 2012
Restructuring Cost and Reserve [Line Items]
Other Charges	(495)
Restructuring Reserve, Settled with Cash	2,973
Restructuring Charges, Net of Change in Estimate	(10,843)
Employee termination costs in second quarter of 2010
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Settled with Cash	1,902	21,461	2,965
Restructuring Charges, Net of Change in Estimate	$ (924)	$ (21,659)	$ (4,267)