SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2010	Dec. 31, 2009
SIGNIFICANT ACCOUNTING POLICIES
Reclassification of proceeds from out-license of intangible asset from cash provided by operating activities to cash used in investing activities	$ 36,000,000
Reclassifications and Revisions
Increase in accumulated other comprehensive loss	279,616,000	119,396,000	(98,836,000)	(43,574,000)
Restatement | Foreign currency translation adjustment
Reclassifications and Revisions
Increased in net deferred tax liabilities	43,600,000
Decrease in goodwill	17,300,000
Decrease in Intangible assets	16,300,000
Increase in accumulated other comprehensive loss	$ 77,200,000