INCOME TAXES (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Deferred tax assets:
Share-based compensation	$ 16,718	$ 19,246
Net operating loss carryforwards	43,631	40,391
Foreign deferred items	1,791	3,398
Capitalized R&D expenses	8,561
Foreign tax credits	10,944	1,192
General business credit	3,485	3,020
Accrued reserve	3,337	5,274
Prepaid expenses	496	4,076
Unrealized loss on investment	6,626	969
Other, net	1,829	1,715
Valuation allowance	(29,435)	(15,677)
Total deferred tax assets	67,983	63,604
Deferred tax liabilities:
Depreciation and amortization	(13,247)	(10,009)
Intangible amortization	(21,113)	(20,940)
Total deferred tax liabilities	(34,360)	(30,949)
Net deferred tax assets	33,623	32,655
Amount of increase in stockholders' equity if deferred tax assets are realized	2,213
Cumulative undistributed earnings	330,108
U.S. federal net operating loss carryforwards	57,341
U.S. state and local net operating loss carryforwards	95,587
Foreign net operating loss carryforwards	$ 52,314