Accounts payable Accrued expenses and other current liabilities Accrued expenses and other liabilities Additional Paid in Capital, Common Stock Additional paid-in capital Additional Paid-in Capital Transfer of fair value of warrants exercised from liabilities to equity Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Stock-based compensation Tax benefits from stock-based compensation Adjustments to reconcile loss to net cash used in operating activities: Amendment Flag TOTAL ASSETS TOTAL ASSETS ASSETS Total current assets Total current assets Current Assets: Cash and cash equivalents CASH AND CASH EQUIVALENTS, END OF PERIOD CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS Non-cash transactions: Cash Paid During Period For [Abstract] Cash paid during the year for: Change in fair value of warrant Stock-based compensation-warrants Stock-based compensation-warrants Commitments and contingencies (Note 4) Commitments and Contingencies Common Stock Common stock, par Common stock, issued Common stock, outstanding Common stock, £0.50 par, unlimited authorized; 135,780,817 issued, 135,760,738 outstanding at September 30, 2011; 106,856,731 issued, 106,836,652 outstanding at December 31, 2010 Current Fiscal Year End Date Depreciation and amortization Warrants and Derivative Liability Warrant derivative liability Document - Document and Entity Information [Abstract] Document - Document and Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Year Focus Document Information [Line Items] Document Period End Date Document Type Income (loss) per share: Earnings Per Share, Basic Basic Earnings Per Share, Diluted Diluted Entities [Table] Entity Central Index Key Entity Common Stock, Shares Outstanding Entity [Domain] Entity Filer Category Entity Registrant Name Equity Component [Domain] Excess Tax Benefit from Share-based Compensation, Operating Activities Excess tax benefit from stock-based awards Fair Value Of Derivative Instrument Transfer from derivative liability to equity, fair value of warrants exercised Income (loss) from operations before taxes Income (loss) from operations before taxes Income Statement [Abstract] Income taxes Provision for income taxes Provision for income taxes Accounts payable, accrued expenses, and other liabilities Changes in assets and liabilities: Other assets Other assets Change in lease liability Interest income, net Interest Issuance of Stock and Warrants for Services or Claims Stock issued for services Legal Entity [Axis] Total liabilities Total liabilities TOTAL LIABILITIES AND STOCKHOLDERS' DEFICIT TOTAL LIABILITIES AND STOCKHOLDERS' DEFICIT LIABILITIES AND STOCKHOLDERS' DEFICIT Total current liabilities Total current liabilities Current Liabilities: Long-Term Liabilities: Lease obligations and other long-term liabilities Net cash provided by financing activities Net cash provided by financing activities CASH FLOWS FROM FINANCING ACTIVITIES: Net cash used in investing activities Net cash used in investing activities CASH FLOWS FROM INVESTING ACTIVITIES: Net cash used in operating activities Net cash used in operating activities CASH FLOWS FROM OPERATING ACTIVITIES: Loss for the period Net loss Net and comprehensive income (loss) Notes to Financial Statements [Abstract] Notes to Financial Statements [Abstract] Total operating expenses Total operating expenses Operating Expenses: Operating loss Operating loss Nature of Business and Basis of Presentation Expense for commitment fee Other current assets Other non-current assets Other (expense) income, net Purchase of long term investment Purchase of long term investment Purchases of equipment Purchases of equipment Excess tax benefit from stock-based awards Proceeds from issuance of common stock, net of transaction costs Proceeds from exercise of stock options, net of transaction costs Proceeds from exercise of warrants, net of transaction costs Property, plant and equipment, net Payments under capital leases Payments under capital leases Research and development Accumulated deficit Retained earnings Revenues Marketing, general and administrative Share-based Compensation Stock-based compensation Shares, Outstanding Ending Balance (in shares) Beginning Balance (in shares) Significant Accounting Policies Statement, Equity Components [Axis] Statement [Line Items] Statement of Cash Flows [Abstract] Statement of Financial Position [Abstract] Statement of Stockholders' Equity [Abstract] Statement [Table] Total stockholders' deficit Ending Balance Beginning Balance Total stockholders' deficit Stockholders' Deficit: Equity Value of restricted stock or stock options granted to nonemployees as payment for services rendered or acknowledged claims. Stock Issued During Period Of Stock And Warrants For Services Or Claims Stock issued for services Stock issued in January financing (in shares) Stock issued for services (in shares) Stock options exercised (in shares) Number of shares issued during the period as a result of the exercise of warrants. Warrants exercised (in shares) Stock issued in January financing Stock options exercised Value stock issued during the period as a result of the exercise of warrants. Warrants exercised Supplemental disclosure of cash flow information: Trading Symbol Treasury shares Treasury stock, shares Treasury stock; 20,079 shares at September 30, 2011 and December 31, 2010 Treasury stock; 20,079 shares at September 30, 2011 and December 31, 2010 Gain (loss) on change in fair value of derivative liability Loss on changes in fair value of derivative liability Weighted Average Number Basic And Diluted, Shares Outstanding [Abstract] Weighted average shares: Weighted Average Number of Shares Outstanding, Diluted Diluted Weighted Average Number of Shares Outstanding, Basic Basic