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INCOME TAXES	3 Months Ended
INCOME TAXES	Mar. 31, 2014
Income Tax Disclosure [Abstract]
INCOME TAXES	12. INCOME TAXES As of December 31, 2013, the Company had gross deferred tax assets of $133.6 million primarily from U.S. federal and state NOL carryforwards, U.S. federal and state research and development credit carryforwards, stock-based compensation expense and intangibles. Due to uncertainties surrounding the Company’s ability to generate future taxable income to realize these assets, a full valuation allowance has been established to offset its net deferred tax asset. Additionally, the Internal Revenue Code rules could limit the future use of its NOL and research and development credit carryforwards to offset future taxable income based on ownership changes and the value of the Company’s common stock.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

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