Document and Entity Information [Abstract] ASSETS Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Available-for-sale Securities, Current Available for sale securities Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Property and equipment - net Property, Plant and Equipment, Net Nontrade Receivables, Noncurrent State research and development credit exchange receivable Other assets Other Assets, Noncurrent LIABILITIES AND STOCKHOLDERS' DEFICIT Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued expenses and other current liabilities Accrued Liabilities, Current Liabilities, Current, Total Total current liabilities Senior convertible notes Convertible Notes Payable, Noncurrent Note payable to related party Notes Payable, Related Parties, Noncurrent Liabilities, Total Total liabilities Commitments and contingencies Commitments and Contingencies Stockholders' deficit: Stockholders' Equity Attributable to Parent [Abstract] Common Stock, Par or Stated Value Per Share Common stock, par value Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Additional paid-in capital Additional Paid in Capital, Common Stock Revenue Revenue, Net Operating expenses: Operating Expenses [Abstract] Research and development Research and Development Expense (Excluding Acquired in Process Cost) General and administrative General and Administrative Expense Goodwill impairment Goodwill, Impairment Loss Other income (expense) Other Nonoperating Income (Expense) Related Party Transaction, Expenses from Transactions with Related Party Interest expense on note payable to related party Interest Expense, Debt Interest expense on senior convertible notes Interest income Investment Income, Interest Temporary Equity, Accretion to Redemption Value, Adjustment Accretion on redeemable convertible preferred stock Net loss per share applicable to common stockholders - basic and diluted Earnings Per Share, Basic and Diluted Basic and Diluted Weighted Average Number of Shares Outstanding Shares used to compute basic and diluted net loss per share applicable to common stockholders Shares used to compute basic and diluted net loss per share applicable to common stockholders Statement [Table] Statement [Line Items] Issuance of Put Option by Stockholder Issuance of put option by stockholder Issuance of put option by stockholder Put Option Redemption by Stockholder Put option redemption by stockholder Put option redemption by stockholder Put Shares Sold to Majority Stockholder Put shares sold to majority stockholder Put shares sold to majority stockholder Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Other comprehensive loss: CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Stock-based compensation expense Share-based Compensation Stock Expense for Shares Issued Pursuant to Research Agreement Stock expense for shares issued pursuant to research agreement Stock expense for shares issued pursuant to research agreement Gain Loss on Sale Abandonment Disposal or Impairment of Property and Equipment (Gain) loss on sale, abandonment/disposal or impairment of property and equipment Loss on sale, abandonment/disposal or impairment of property and equipment Accrued Interest on Investments Net of Amortization of Discounts Accrued interest on investments, net of amortization of discounts Accrued interest on investments, net of amortization of premiums (discounts) Other Noncash Income (Expense) Other, net Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] State Research and Development Credit Exchange Receivable State research and development credit exchange receivable State research and development credit exchange receivable Accounts payable Increase (Decrease) in Accounts Payable Accrued expenses and other current liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Other liabilities Increase (Decrease) in Other Operating Liabilities CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Sales and maturities of marketable securities Proceeds from Sale and Maturity of Available-for-sale Securities Proceeds from sale of property and equipment Proceeds from Sale of Property, Plant, and Equipment CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from Issuance of Common Stock and Warrants Issuance of common stock and warrants, net of issuance costs Issuance of common stock and warrants Collection of Convertible Preferred Stock Subscriptions Receivable Collection of Series C convertible preferred stock subscriptions receivable Collection of Series C convertible preferred stock subscriptions receivable Issuance of Series B convertible preferred stock for cash Proceeds from Issuance of Convertible Preferred Stock Cash received for common stock to be issued Proceeds from Issuance of Common Stock Borrowings under lines of credit Proceeds from Long-term Lines of Credit Proceeds from notes receivables Proceeds from Collection of Notes Receivable Proceeds from Related Party Debt Borrowings on notes payable to related party Borrowings on notes payable Proceeds from Notes Payable Proceeds from senior convertible notes Proceeds from Convertible Debt Payment of Employment Taxes Related to Vested Restricted Stock Units Payment of employment taxes related to vested restricted stock units Payment of employment taxes related to vested restricted stock units CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD CASH AND CASH EQUIVALENTS, END OF PERIOD SUPPLEMENTAL CASH FLOWS DISCLOSURES: Supplemental Cash Flow Information [Abstract] Cash paid for income taxes Income Taxes Paid Interest paid in cash, net of amounts capitalized Interest Paid Issuance of common stock upon conversion of notes payable Debt Conversion, Converted Instrument, Amount Increase in Additional Paid in Capital Resulting from Merger Increase in additional paid-in capital resulting from merger Increase in additional paid-in capital resulting from merger Issuance of common stock for notes receivable Stock Issued Issuance of Convertible Preferred Stock Subscriptions Issuance of Series C convertible preferred stock subscriptions Issuance of Series C convertible preferred stock subscriptions Issuance of Redeemable Convertible Preferred Stock Issuance of Series A redeemable convertible preferred stock Issuance of Series A redeemable convertible preferred stock Non-cash construction in progress and property and equipment Construction in Progress Expenditures Incurred but Not yet Paid Cancellation of Principal on Note Payable to Related Party Cancellation of principal on note payable to related party Cancellation of principal on note payable to related party Description of business and basis of presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Investment in securities Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] State Research and Development Credit Exchange Receivable [Text Block] State research and development credit exchange receivable State research and development credit exchange receivable State research and development credit exchange receivable [Abstract] State research and development credit exchange receivable Property, Plant and Equipment Disclosure [Text Block] Property and equipment - net Accrued expenses and other current liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Related Party Transactions Disclosure [Text Block] Related-party arrangements Senior convertible notes Long-term Debt [Text Block] Common and Preferred Stock [Text Block] Common and preferred stock Common and preferred stock Common and preferred stock [Abstract] Common and preferred stock Net loss per common share Earnings Per Share [Text Block] Net loss per common share [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Accounting for stock-based compensation Commitments and contingencies Commitments and Contingencies Disclosure [Text Block] Income taxes Income Tax Disclosure [Text Block] Amendment Flag Current Fiscal Year End Date Document Period End Date Document Type Entity Central Index Key Entity Common Stock, Shares Outstanding Entity Filer Category Entity Registrant Name Document Fiscal Period Focus Document Fiscal Year Focus Condensed Consolidated Balance Sheets [Abstract] Condensed Consolidated Statements of Operations [Abstract] Condensed Consolidated Statements Of Cash Flows [Abstract] Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive loss Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Cumulative translation (loss) gain Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Unrealized holding gain (loss) during the period Preferred Stock, Par or Stated Value Per Share Undesignated preferred stock, par value Preferred Stock, Shares Authorized Undesignated preferred stock, shares authorized Class of Stock [Axis] Class of Stock [Domain] Series B Preferred Stock [Member] Series B Convertible Preferred Stock Series C Preferred Stock [Member] Series C Convertible Preferred Stock Accounting for Stock-Based Compensation [Abstract] Converted To Common Stock Converted to Common Stock Converted to common stock. Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated other comprehensive income Condensed Consolidated Statements of Comprehensive Loss [Abstract] Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract] Unrealized gain (loss) on investments: Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Net of Tax Less: reclassification adjustment for gains (losses) included in net loss Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax Net unrealized (loss) gain on investments Adjustment of Warrants Granted for Services Fair value adjustment of warrant liability Warrant Liability Disclosure [Text Block] Warrant liability The entire disclosure of Warrant liability. Warrant liability [Abstract] Liabilities Assumed Warrant liability Assets, Current, Total Total current assets Assets, Total Total Development Stage Enterprise, Deficit Accumulated During Development Stage Deficit accumulated during the development stage Stockholders' Equity Attributable to Parent, Total Total stockholders' deficit Liabilities and Equity, Total Total Operating Expenses, Total Total operating expenses Operating Income (Loss) Loss from operations Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest Loss before provision for income taxes Income Tax Expense (Benefit) Income taxes Preferred Stock Conversions, Inducements Deemed dividend related to beneficial conversion feature of convertible preferred stock Net Income (Loss) Available to Common Stockholders, Basic Net loss applicable to common stockholders Available-for-sale Securities, Gross Realized Gain (Loss) Loss on available-for-sale securities Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other current assets Increase (Decrease) in Other Operating Assets Other assets Net Cash Provided by (Used in) Operating Activities Net cash used in operating activities Payments to Acquire Available-for-sale Securities Purchase of marketable securities Payments to Acquire Property, Plant, and Equipment Purchase of property and equipment Net Cash Provided by (Used in) Investing Activities Net cash (used in) provided by investing activities Payments for Repurchase of Common Stock Repurchase of common stock Repayments of Related Party Debt Principal payments on notes payable to principal stockholder Repayments of Notes Payable Principal payments on notes payable Net Cash Provided by (Used in) Financing Activities Net cash provided by financing activities Cash and Cash Equivalents, Period Increase (Decrease) NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS Description of business and basis of presentation [Abstract] Investment in securities [Abstract] Property and equipment - net [Abstract] Accrued expenses and other current liabilities [Abstract] Related-party arrangements [Abstract] Senior convertible notes [Abstract] Commitments and contingencies [Abstract] Income taxes [Abstract] Preferred Stock, Shares Issued Undesignated preferred stock, shares issued Preferred Stock, Shares Outstanding Undesignated preferred stock, shares outstanding Preferred Stock, Value, Issued Undesignated preferred stock, $0.01 par value - 10,000,000 shares authorized; no shares issued or outstanding at March 31, 2012 and December 31, 2011 Common Stock, Value, Issued Common stock, $0.01 par value - 250,000,000 shares authorized at March 31, 2012 and December 31, 2011, respectively; 167,815,783 and 131,522,945 shares issued and outstanding at March 31, 2012 and December 31, 2011, respectively Net Income (Loss) Attributable to Parent Net Loss Net loss Net loss Research and Development in Process In-process research and development In-process research and development costs Conversion of Stock, Amount Converted Conversion of Series A redeemable convertible preferred stock Unrealized Gain (Loss) on Derivatives Fair value of forward purchase contract