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INCOME TAXES (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Significant components of deferred tax assets
Net operating loss carryforwards	$ 271,800,000	$ 248,700,000
Purchased technology	6,300,000	20,000,000
Research credits	22,700,000	20,500,000
Capitalized research and development	6,600,000	19,400,000
License fees	700,000	1,100,000
Other - net	10,100,000	14,000,000
Total deferred tax assets	318,200,000	323,700,000
Valuation allowance for deferred tax assets	(318,200,000)	(323,700,000)
Net deferred tax assets	0	0
Valuation allowance
Increase (decrease) in valuation allowance	(5,500,000)	14,200,000	27,300,000
Valuation allowance for deferred tax assets related to benefits of stock option deductions	$ 5,550,000

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Amount before allocation of valuation allowances of deferred tax asset attributable to the treatment of license fee payments in connection with in-licensed technology.

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The amount of the valuation allowance recorded for the tax benefit that will be credited to shareholders' equity if the tax benefit subsequently becomes realizable. Examples include 1) adjustments of the opening balance of retained earnings for certain changes in accounting principle or a correction of an error; 2) gains and losses included in comprehensive income but excluded from net income; 3) expenditures that are deductible for income tax purposes that are reported as a reduction of shareholders' equity; 4) expenses for employee stock options recognized differently for financial reporting purposes and income tax purposes; 5) dividends paid on unallocated shares held by an ESOP that are charged to retained earnings and 6) deductible temporary differences that existed at the date of a quasi reorganization.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill.

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