INCOME TAXES 2 (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009 Subsidiary
Operating Loss and Tax Credit Carryforwards [Line Items]
Number of Foreign Subsidiary of Which Shares Have been Sold				1
Tax benefit realized from stock options exercised	$ 1,264,000	$ 2,650,000	$ 3,088,000
Amount of indefinite re-investment with respect to the earnings and profits of its other foreign subsidiaries	389,600,000
Federal | R&D credits
Operating Loss and Tax Credit Carryforwards [Line Items]
Federal R&D credits, net of those related to stock option deductions	5,126,000
Federal R&D credits related to stock option deductions	29,314,000
Foreign
Operating Loss and Tax Credit Carryforwards [Line Items]
Net operating loss carry forwards	164,491,000
Tax credits carry forwards	43,973,000
Foreign | R&D credits
Operating Loss and Tax Credit Carryforwards [Line Items]
Tax credits carry forwards	32,203,000
State
Operating Loss and Tax Credit Carryforwards [Line Items]
Net operating loss carry forwards	502,349,000
State | R&D credits
Operating Loss and Tax Credit Carryforwards [Line Items]
Tax credits carry forwards	14,817,000
State | Investment tax credits
Operating Loss and Tax Credit Carryforwards [Line Items]
Tax credits carry forwards	$ 8,255,000