Document and Entity Information [Abstract] Document And Entity Information [Abstract] Statement [Table] Statement [Line Items] Document Type Amendment Flag Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Filer Category Entity Common Stock, Shares Outstanding Condensed Consolidated Balance Sheets [Abstract] Assets [Abstract] Assets Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents, end of period Cash and cash equivalents, beginning of period Cash and cash equivalents Cash and cash equivalents Short Term Investments Short-term investments Short-term investments Prepaid Expense, Current Prepaid contract research and manufacturing Prepaid Expense, Current, Total Prepaid Expense and Other Assets, Current Other prepaid expenses and other current assets Prepaid Expense and Other Assets, Current, Total Assets, Current Total current assets Property and equipment, net Property, Plant and Equipment, Net, Ending Balance Property, Plant and Equipment, Net, Beginning Balance Property, Plant and Equipment, Net, Total Other assets Other Assets, Noncurrent, Total Assets Total Assets Liabilities and Stockholders' Equity [Abstract] Liabilities and Stockholders' Equity Accounts payable Accounts Payable, Current, Total Employee-related Liabilities, Current Employee-related Liabilities, Current, Total Accrued compensation and related expenses Accrued Liabilities, Current Accrued contract research and manufacturing Accrued Liabilities, Current, Total Other Accrued Liabilities, Current Other accrued expenses Liabilities Total liabilities Commitments Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity Attributable to Parent Stockholders' equity: Preferred stock, $0.0001 par value, 5,000,000 shares authorized, no shares issued and outstanding Preferred Stock, Value, Issued, Ending Balance Preferred Stock, Value, Issued, Beginning Balance Preferred stock, $0.0001 par value, 5,000,000 shares authorized, no shares issued and outstanding Preferred Stock, Value, Issued, Total Common stock, $0.0001 par value, 100,000,000 and 60,000,000 shares authorized, respectively and 40,856,259 and 33,500,406 shares issued and outstanding, respectively Common Stock, Value, Issued, Ending Balance Common Stock, Value, Issued, Beginning Balance Common stock, $0.0001 par value, 100,000,000 shares authorized, 67,040,569 and 62,034,146 shares issued and outstanding, respectively 49,790,975 shares issued and outstanding, respectively Additional paid-in capital Additional Paid in Capital, Ending Balance Additional Paid in Capital, Beginning Balance Additional Paid in Capital, Total Development Stage Enterprise, Deficit Accumulated During Development Stage Deficit accumulated during the development stage Deficit accumulated during the development stage Stockholders' Equity Attributable to Parent Balance, value Balance, value Balance Balance Total stockholders' equity Liabilities and Stockholders' Equity Total liabilities and stockholders' equity Preferred stock, par value Preferred stock, shares authorized Preferred stock, shares issued Preferred Stock, Shares Issued, Total Preferred stock, shares outstanding Preferred Stock, Shares Outstanding, Ending Balance Preferred Stock, Shares Outstanding, Beginning Balance Common stock, par value Common stock, par value - merger and recapitalization Common stock, shares authorized Common stock, shares issued Common stock, shares issued Common Stock, Shares, Issued, Total Common stock, shares outstanding Balance at September 30, 2010, Shares Balance at January 1, 2010, Shares Condensed Consolidated Statements Of Operations [Abstract] Operating Expenses [Abstract] Operating expenses: Research and Development Expense Research and development Research and Development Expense, Total Selling and Marketing Expense Sales and marketing Selling and Marketing Expense, Total General and administrative General and administrative General and Administrative Expense, Total Operating Expenses Total operating expenses Total operating expenses Operating Income (Loss) Operating loss Operating Income (Loss), Total Investment Income, Interest Interest income Interest expense Interest expense Interest Expense, Total Net loss Net loss Earnings Per Share, Basic and Diluted Net loss per basic and diluted share of common stock Earnings Per Share, Basic and Diluted, Total The average number of shares or units issued and outstanding that are used in calculating basic and diluted EPS. Weighted Average Number of Shares Outstanding Basic and Diluted, share Weighted average number of basic and diluted common shares outstanding Condensed Consolidated Statement Of Stockholders' Equity [Abstract] Statement, Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Parent [Member] Parent [Member] Common Stock [Member] Common Stock [Member] Additional Paid In Capital [Member] Additional Paid-In capital [Member] Retained Earnings [Member] Deficit Accumulated During The Development Stage [Member] Shares, Issued Balance, shares Balance, shares Balance, shares Balance, shares Share-based Compensation Non-cash stock-based compensation Share-based Compensation, Total Stock-based compensation Stock Issued During Period, Value, New Issues Sale and issuance of common stock in January 2012 at approximately $4.44 per share, net of issuance costs Stock Issued During Period, Shares, New Issues Sale and issuance of common stock in January 2012 at approximately $4.44 per share, net of issuance costs, shares Common stock issued at par pursuant to net share cash less exercises of common stock warrants value. Common Stock Issued at Par Pursuant to Net Share Cash Less Exercises of Common Stock Warrants Value Common stock issued in 2012 at par, pursuant to net-share (cashless) exercises of common stock warrants Stock issued during period shares pursuant to net-share exercises of common stock warrants Stock Issued During Period Shares Pursuant To Net-Share Exercises Of Common Stock Warrants Common stock issued in 2012 at par, pursuant to net-share (cashless) exercises of common stock warrants, shares Equity Issuance, Amount Per Share Sale and issuance of common stock, per share Common stock warrants, exercise price Common stock issued pursuant to exercise of common stock warrants, per share Common stock warrants, purchase price Condensed Consolidated Statements Of Cash Flows [Abstract] Net Cash Provided By Used In Operating Activities Abstract Operating activities: Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities Abstract Adjustments to reconcile net loss to net cash used in operating activities: Depreciation and amortization Depreciation, Depletion and Amortization, Total Issuance of Stock and Warrants for Services or Claims Stock issued for license agreement Paid-in-Kind Interest Non-cash interest expense Gain on disposition of assets Gain on disposition of assets Gain (Loss) on Disposition of Assets, Total This represents the aggregate fair value of warrants issued to purchase common stock of the company pursuant to a Finder's Agreement entered into by the company for the sub-licensable license and right to certain intellectual property and proprietary information. Fair Value of warrants for finder's agreement Fair value of warrants for finder's agreement Fair value of warrants for finder's agreement Increase Decrease In Operating Capital Abstract Changes in operating assets and liabilities: Prepaid contract research and manufacturing expenses, other prepaid expenses and other assets Prepaid contract research and manufacturing expenses, other prepaid expenses and other assets Increase (Decrease) in Prepaid, Deferred Expense and Other Assets, Total Accounts payable, accrued contract research and manufacturing expenses and other accrued expenses Accounts payable, accrued contract research and manufacturing expenses and other accrued expenses Increase (Decrease) in Employee Related Liabilities Increase (Decrease) in Employee Related Liabilities, Total Accrued compensation and related expenses Net Cash Provided by (Used in) Operating Activities Net cash used in operating activities Net Cash Provided By Used In Investing Activities Abstract Investing activities: Acquisitions of property and equipment Acquisitions of property and equipment Acquisitions of property and equipment Proceeds from sale of assets Proceeds from sale of assets Proceeds from Sale of Productive Assets, Total Purchases of investments Purchases of short-term investments Payments to Acquire Investments, Total Payments for (Proceeds from) Investments Redemptions and sales of short-term investments Payments for (Proceeds from) Investments, Total Redemptions and sales of investments Increase (Decrease) in Security Deposits Security deposits Net Cash Provided by (Used in) Investing Activities Net cash provided by (used in) investing activities Net Cash Provided By Used In Financing Activities Abstract Financing activities: Proceeds from Contributions from Affiliates Proceeds from borrowings from affiliate Proceeds from exercise of stock options Proceeds from Warrant Exercises Proceeds from exercise of common stock warrants Recapitalization Costs Recapitalization of the Company Proceeds from sales of equity securities, net of issuance costs Proceeds from sales of equity securities, net of issuance costs Proceeds from Issuance or Sale of Equity, Total Receipt of recovery of short-swing profits. Receipt of Recovery of Short-Swing Profits Receipt of recovery of short-swing profits Receipt of cash for stock subscription receivable. Receipt of cash for stock subscription receivable 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 Supplemental Cash Flow Information Abstract Supplemental disclosure of cash flow information: Cash paid for interest Interest Paid, Net, Total Common Stock, Share Subscribed but Unissued, Subscriptions Receivable Common stock, subscription receivable Loans Payable Loans Payable, Total Loan Interest Payable Accrued interest Convertible Common Stock Issued, Shares Common stock issued in conversion of loan Common stock issued in lieu of repayment of loan, per share. Common stock issued in lieu of repayment of loan, per share Noncash or Part Noncash Acquisition, Noncash Financial or Equity Instrument Consideration, Warrants Issued Warrants issued to purchase common stock Fair value of warrants granted. Fair Value of Warrants Granted Common stock and warrants, aggregate fair value Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Common stock, issued in conjunction with merger and recapitalization Warrants unexercised and outstanding. Warrants unexercised and outstanding Summary Of Significant Accounting Policies And Nature Of Operations [Abstract] Significant Accounting Policies Text Block Summary Of Significant Accounting Policies And Nature Of Operations Short-Term Investments [Abstract] Cash, Cash Equivalents, and Short-term Investments [Text Block] Short-Term Investments Fair Value Measurements [Abstract] Fair Value Disclosures Text Block Fair Value Measurements Stock-Based Compensation [Abstract] Disclosure Of Compensation Related Costs Share Based Payments Text Block Stock-Based Compensation Loss Per Share [Abstract] Earnings Per Share Text Block Loss Per Share Exercise Of Common Stock Warrants [Abstract] Stockholders' Equity Note Disclosure [Text Block] Exercise Of Common Stock Warrants Registered Direct Sale Of Common Stock [Abstract] Common equity sales program. Common Stock Offerings [Text Block] Registered Direct Sale Of Common Stock Commitments And Contingencies [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments Commitments And Contingencies