Document and Entity Information [Abstract] Statement, Equity Components [Axis] Equity Component [Domain] CURRENT ASSETS: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Investments in marketable securities Marketable Securities, Current Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Deferred financing costs Deferred Finance Costs, Current, Net Deferred financing costs Total current assets Assets, Current, Total Total current assets PROPERTY AND EQUIPMENT - at cost less accumulated depreciation Property, Plant and Equipment, Net PROPERTY AND EQUIPMENT - at cost less accumulated depreciation TOTAL ASSETS Assets, Total TOTAL ASSETS CURRENT LIABILITIES: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued expenses (Note 6) Accrued Liabilities, Current Outsourced Services Payable Outsourced services payable Outsourced services payable Note payable (Note 9) Notes Payable, Current Capital lease obligations Capital Lease Obligations, Current Capital lease obligations Total current liabilities Liabilities, Current, Total Total current liabilities LONG-TERM LIABILITIES: Liabilities, Noncurrent [Abstract] Note payable, net of discount - less current portion (Note 9) Notes Payable, Noncurrent Other long-term liabilities Other Liabilities, Noncurrent STOCKHOLDERS' EQUITY: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $.01 par value - 10,000,000 shares authorized and no shares issued and outstanding at December 31, 2011 and at December 31, 2010 Temporary Equity, Carrying Amount Preferred stock, par value Temporary Equity, Par or Stated Value Per Share Preferred stock, shares authorized Temporary Equity, Shares Authorized Preferred stock, shares issued Temporary Equity, Shares Issued Preferred stock, shares outstanding Temporary Equity, Shares Outstanding Common stock, $.01 par value - 100,000,000 shares authorized and 31,427,355 shares issued and outstanding at December 31, 2011 and 100,000,000 shares authorized and 31,255,953 shares issued and outstanding at December 31, 2010 Common Stock, Value, Issued Common stock, par value Common Stock, Par or Stated Value Per Share 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 Common stock warrants Warrants and Rights Outstanding Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated deficit TOTAL STOCKHOLDERS' EQUITY Stockholders' Equity Attributable to Parent, Total TOTAL STOCKHOLDERS' EQUITY TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity, Total TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY RESEARCH AND DEVELOPMENT EXPENSES Research and Development Expense GENERAL AND ADMINISTRATIVE EXPENSES General and Administrative Expense MARKETING EXPENSES Marketing Expense MARKETING EXPENSES OPERATING EXPENSES Operating Expenses OPERATING EXPENSES INTEREST AND OTHER INCOME Investment Income, Interest INTEREST EXPENSE Interest Expense INTEREST EXPENSE GAIN ON EARLY EXTINGUISHMENT OF DEBT (NOTE 7) Gains (Losses) on Extinguishment of Debt Increase Decrease in Fair Value of Preferred Stock Conversion Feature DECREASE (INCREASE) IN FAIR VALUE OF PREFERRED STOCK CONVERSION FEATURE (INCREASE) DECREASE IN FAIR VALUE OF PREFERRED STOCK CONVERSION FEATURE DECREASE (INCREASE) IN FAIR VALUE OF PREFERRED STOCK CONVERSION FEATURE LOSS FROM CONTINUING OPERATIONS Income (Loss) from Continuing Operations Attributable to Parent LOSS FROM CONTINUING OPERATIONS INCOME FROM DISCONTINUED OPERATIONS (NOTE 3) Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent INCOME FROM DISCONTINUED OPERATIONS (NOTE 3) NET LOSS Net Income (Loss) Attributable to Parent NET LOSS BENEFICIAL CONVERSION FEATURE OF PREFERRED STOCK (NOTE 11) Preferred Stock Conversions, Inducements BENEFICIAL CONVERSION FEATURE OF PREFERRED STOCK (NOTE 11) PREFERRED STOCK ACCRETION Temporary Equity, Carrying Amount, Period Increase (Decrease) PREFERRED STOCK ACCRETION PREFERRED STOCK DIVIDENDS Redeemable Preferred Stock Dividends PREFERRED STOCK DIVIDENDS NET LOSS APPLICABLE TO COMMON SHAREHOLDERS Net Income (Loss) Available to Common Stockholders, Basic NET LOSS APPLICABLE TO COMMON SHAREHOLDERS NET LOSS PER SHARE APPLICABLE TO COMMON SHAREHOLDERS - Basic and diluted Earnings Per Share, Basic and Diluted NET LOSS PER SHARE APPLICABLE TO COMMON SHAREHOLDERS - Basic and diluted Weighted Average Shares Outstanding Basic and Diluted WEIGHTED AVERAGE SHARES OUTSTANDING - Basic and diluted WEIGHTED AVERAGE SHARES OUTSTANDING -- Basic and diluted WEIGHTED AVERAGE SHARES OUTSTANDING - Basic and diluted Statement [Table] Statement [Line Items] Common Stock Balance, shares Balance Balance Additional Paid-In Capital Series C-1 Preferred Warrants Common Warrants [Member] Common Warrants Common Warrants Accumulated Deficit Redeemable Preferred Stock Accretion and Dividend Redeemable preferred stock accretion and dividends Redeemable preferred stock accretion and dividends Redeemable preferred stock accretion and dividends Issuance of common stock, shares Stock Issued During Period, Shares, New Issues Issuance of common stock Stock Issued During Period, Value, New Issues Exercise of stock options, shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Stock Issued During Period Shares Warrants Exercised Common Exercise of common stock warrants, shares Exercise of common stock warrants, shares Stock Issued During Period Value Warrants Exercised Common Exercise of common stock warrants Exercise of common stock warrants Stock Retired During Period Value Warrants Retirement of common stock warrants Retirement of common stock warrants Retirement of common stock warrants Stock Issued During Period Value Warrants Issued Preferred Issuance of series C-1 preferred stock warrants Issuance of series C-1 preferred stock warrants Issuance of series C-1 preferred stock warrants Stock compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Net loss Balance, shares Balance Stock Issued During Period Value Warrants Issued Common Issuance of common warrants (Note 9) Issuance of common warrants (Note 9) Preferred Stock Warrants Exercised Exercise of series C-1 preferred stock warrants Exercise of series C-1 preferred stock warrants Exercise of series C-1 preferred stock warrants IPO costs Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs IPO costs Elimination of preferred stock conversion feature upon conversion of preferred stock to common stock (Note 11) Adjustments to Additional Paid in Capital, Convertible Debt with Conversion Feature CASH FLOWS FROM OPERATING ACTIVITIES: Net Cash Provided by (Used in) Operating Activities [Abstract] Income from discontinued operations (Note 3) Change in fair value of preferred stock conversion feature Gain from early extinguishment of debt Depreciation and amortization Depreciation, Depletion and Amortization Stock Compensation and Other Stock compensation expense and other Stock compensation expense and other Stock compensation expense and other Amortization of deferred financing costs and debt discount Amortization of Financing Costs Unrealized investment (loss) gain Unrealized Gain (Loss) on Investments Unrealized investment (loss) gain Noncash Research and Development Expense Noncash research and development expense (Note 8) Noncash research and development expense (Note 8) Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Increase Decrease in Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets Prepaid expenses and other current assets Prepaid expenses and other current assets Accounts payable Increase (Decrease) in Accounts Payable Increase Decrease in Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities Accrued expenses and other current liabilities Other long-term liabilities Increase (Decrease) in Other Operating Liabilities Other long-term liabilities Net cash used in operating activities of continuing operations Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash used in operating activities of continuing operations Net cash used in operating activities of discontinued operations Cash Provided by (Used in) Operating Activities, Discontinued Operations Net cash used in operating activities of discontinued operations Net cash used in operating activities Net Cash Provided by (Used in) Operating Activities Net cash used in operating activities CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of investments Payments to Acquire Marketable Securities Purchases of investments Proceeds from maturities of investments Proceeds from Sale and Maturity of Marketable Securities Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Purchases of property and equipment Net cash provided by (used in) investing activities of continuing operations Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net cash provided by (used in) investing activities of continuing operations Net cash provided by investing activities of discontinued operations (Note 3) Cash Provided by (Used in) Investing Activities, Discontinued Operations Net cash provided by investing activities of discontinued operations (Note 3) Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Net cash provided by (used in) investing activities CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from sale of Series C-1 preferred stock - net Proceeds from Issuance of Preferred Stock and Preference Stock Proceeds from exercise of stock options Proceeds from Stock Options Exercised Proceeds from Exercise of Common Stock Warrants Proceeds from exercise of common stock warrants Proceeds from exercise of common stock warrants Proceeds from sale of common stock Proceeds from Issuance of Common Stock Proceeds from sale of common stock Payment of common stock offering costs Payments of Stock Issuance Costs Payment of common stock offering costs Proceeds from issuance of notes payable (Note 9) Proceeds from Notes Payable Payment of debt issuance costs (Note 9) Payments of Debt Issuance Costs Payment of debt issuance costs (Note 9) Repayment of pSivida note payable (Note 7) Repayments of Notes Payable Repayment of pSivida note payable (Note 7) Repayments of Principal on Notes Payable Payment of principal on note payable Payment of principal on note payable Payment of principal on note payable Payments on capital lease obligations Repayments of Long-term Capital Lease Obligations Payments on capital lease obligations Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Net cash (used in) provided by financing activities NET INCREASE (DECREASE) IN CASH Cash and Cash Equivalents, Period Increase (Decrease) NET INCREASE (DECREASE) IN CASH CASH - Beginning of period CASH - End of period SUPPLEMENTAL DISCLOSURES: Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid Cash paid for interest Supplemental schedule of noncash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Supplemental schedule of noncash investing and financing activities: Reclassification of fair value of preferred stock conversion feature to additional paid-in capital IPO Issuance Costs Charged to Equity IPO issuance costs charged to equity IPO issuance costs charged to equity IPO issuance costs charged to equity Notes Payable Issuance Costs Charged to Equity Notes payable issuance costs charged to equity (Note 9) Notes payable issuance costs charged to equity (Note 9) Notes payable issuance costs charged to equity (Note 9) Property and equipment acquired under capital leases Fair Value of Assets Acquired Property and equipment acquired under capital leases Common stock issued for research and development expense (Note 8) Stock Issued Common stock issued for research and development expense (Note 8) NATURE OF OPERATIONS Nature of Operations [Text Block] Nature of Operations [Abstract] Nature of Operations [Abstract] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Summary of Significant Accounting Policies [Abstract] Summary of Significant Accounting Policies [Abstract] DISCONTINUED OPERATIONS Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Discontinued Operations [Abstract] Discontinued Operations [Abstract] Factors Affecting Operations [Text Block] FACTORS AFFECTING OPERATIONS FACTORS AFFECTING OPERATIONS Factors Affecting Operations [Abstract] Factors Affecting Operations [Abstract] FACTORS AFFECTING OPERATIONS PROPERTY AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] Property and Equipment [Abstract] Property and Equipment [Abstract] ACCRUED EXPENSES Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accrued Expenses [Abstract] Accrued Expenses [Abstract] PSIVIDA AGREEMENT Collaborative Arrangement Disclosure [Text Block] pSivida Agreement [Abstract] pSivida Agreement [Abstract] PSIVIDA AGREEMENT License Agreements Disclosure [Text Block] LICENSE AGREEMENTS LICENSE AGREEMENTS License Agreements [Abstract] License Agreements [Abstract] LICENSE AGREEMENTS TERM AND REVOLVING LOAN AGREEMENT Debt Disclosure [Text Block] Term and Revolving Loan Agreement [Abstract] Term and Revolving Loan Agreement [Abstract] Preferred Stock/Common Stock Warrants [Abstract] Preferred Stock/Common Stock Warrants [Abstract] OPTIONS Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Options [Abstract] Options [Abstract] INCOME TAXES Income Tax Disclosure [Text Block] Income Taxes [Abstract] Income Taxes [Abstract] FAIR VALUE Fair Value Disclosures [Text Block] Fair Value [Abstract] Fair Value [Abstract] EMPLOYEE BENEFIT PLANS Pension and Other Postretirement Benefits Disclosure [Text Block] Employee Benefit Plans [Abstract] Employee Benefit Plans [Abstract] SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) Quarterly Financial Information [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 Current Reporting Status Entity Filer Category Entity Registrant Name Entity Voluntary Filers Entity Well-known Seasoned Issuer Entity Public Float Document Fiscal Period Focus Document Fiscal Year Focus Balance Sheets [Abstract] Statements of Operations [Abstract] Statements of Changes in Stockholders' Equity (Deficit) [Abstract] Statements of Cash Flows [Abstract] Income Taxes Paid, Net Income tax paid Dividends Payable, Amount Dividend payments Preferred Stock [Text Block] PREFERRED STOCK Stockholders' Equity Note Disclosure [Text Block] COMMON STOCK WARRANTS Commitments and Contingencies COMMITMENTS AND CONTINGENCIES (Note 10) COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies [Abstract] Selected Quarterly Financial Data [Abstract] Preferred Stock, Accretion of Redemption Discount Accretion of series C-1 preferred stock beneficial conversion feature (Note 11)