Accounting Policies [Abstract] Accounting Policies [Abstract] Accounts Payable And Accrued Liabilities Disclosure [Text Block] Accrued Expenses Accounts Payable Current Accounts payable Accretion on redeemable convertible preferred stock. Accretion Of Redeemable Convertible Preferred Stock Accretion of Series B redeemable convertible preferred stock Accrued Interest [Member] Accrued Interest [Member] Accrued Interest Accrued Liabilities Current Accrued expenses Total Accrued Professional Fees Current Legal and accounting fees Accrued Separation Agreement Accrued Separation Agreement Severance agreement (Note 8) Accumulated Deficit During Development Stage [Member] Deficit Accumulated During the Development Stage Additional Paid In Capital Additional paid-in capital Additional Paid In Capital [Member] Additional Paid-In Capital Adjustment for Modification of Warrants Adjustment For Modification Of Warrants Modification of warrants Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Stock-based compensation expense Adjustments 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: After Modification [Member] After Modification [Member] After Modification Amendment Flag Amendment Flag Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Dilutive shares not included in calculation Antidilutive Securities Excluded From Computation Of Earnings Per Share By Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Name [Domain] Antidilutive Securities, Name [Domain] Assets Total assets Assets [Abstract] ASSETS Assets Current Total current assets Assets Current [Abstract] Current assets: Assets Fair Value Disclosure Fair value of cash and cash equivalents invested in money market funds Award Type [Axis] Award Type [Axis] Basis Of Accounting Basis of Presentation Basis of Presentation [Line Items] Basis Of Presentation [Line Items] Basis of Presentation [Line Items] Basis of Presentation [Table] Basis Of Presentation [Table] Basis of Presentation [Table] Before Modification [Member] Before Modification [Member] Before Modification 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 Unrestricted cash and cash equivalents Cash And Cash Equivalents Period Increase Decrease NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract] NONCASH FINANCING ACTIVITIES: Cashless Exercise of Stock Options and Warrants Cashless Exercise Of Stock Options And Warrants Cashless exercise of common stock options and warrants Class A Two Warrants [Member] Class A Two Warrants [Member] Class A-2 Warrants Class B Warrants [Member] Class B Warrants [Member] Class B Warrants Class Of Stock [Domain] Class of Stock [Domain] Class Of Warrant Or Right Exercise Price Of Warrants Or Rights Exercise price of warrant Class Of Warrant or Right Expiration Date, Extension Period Class Of Warrant Or Right Expiration Date Extension Period Warrants exercisable life extended period Class Of Warrant Or Right Issuable With Each New Share Of Common Stock Class Of Warrant Or Right Issuable With Each New Share Of Common Stock Warrant to purchase common stock Class Of Warrant Or Right Number Of Securities Called By Warrants Or Rights Warrants to purchase shares of common stock Class Of Warrant Or Right Outstanding Outstanding Class B warrants having cashless exercise rights Collaboration Agreement, Research And Development That Will Be Funded Collaboration Agreement Research And Development That Will Be Funded Collaborative funding agreement Commitments And Contingencies Commitments and contingencies (Note 8) Commitments And Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments And Contingencies Disclosure [Text Block] Commitments, Contingencies and Legal Proceedings Commitments and Contingencies [Line Items] Commitments And Contingencies [Line Items] Commitments and Contingencies [Line Items] Commitments and Contingencies [Table] Commitments And Contingencies [Table] Commitments and Contingencies [Table] Common Stock [Member] Common Stock 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 share issued Common stock, issued Common Stock Shares Outstanding Common stock, outstanding Common Stock Value Common stock, $0.001 par value; 50,000,000 shares authorized at June 30, 2013 and December 31, 2012, 16,299,627 and 16,060,853 issued and outstanding at June 30, 2013 and December 31, 2012, respectively Components Of Common Stock [Axis] Components Of Common Stock [Axis] Components Of Common Stock [Axis] Components Of Common Stock By Type [Domain] Components Of Common Stock By Type [Domain] Components Of Common Stock By Type [Domain] Conversion Of Accrued Liabilities To Common Stock Conversion Of Accrued Liabilities To Common Stock Conversion of accrued expenses into common stock Conversion Of Stock Shares Converted 1 Series C prefer stock converted to common stock Conversion Of Stock Shares Issued 1 Conversion of share, common stock issued Current Fiscal Year End Date Current Fiscal Year End Date Debt Conversion Converted Instrument Amount 1 Conversion of extension costs related to convertible notes into common stock Debt Conversion Original Debt Amount 1 Conversion and redemption of convertible notes and accrued interest into common stock Depreciation And Amortization Depreciation and amortization Development Stage Enterprise Deficit Accumulated During Development Stage Deficit accumulated during the development stage Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Stock-Based Compensation Dividend Equivalent Rights Dividend Equivalent Rights Dividend rights issued Dividends Payable Current Accrued dividends payable Dividends Preferred Stock Convertible preferred stock dividend Document Document and Entity Information [Abstract] Document Document And Entity Information [Abstract] Document Documentand Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Information [Line Items] Document Information [Line Items] Document Period End Date Document Period End Date Document Type Document Type Drug Discovery Program [Member] Drug Discovery Program [Member] Drug Discovery Program with the University of Georgia Earnings Per Share [Abstract] Earnings Per Share [Abstract] Earnings Per Share Basic And Diluted Net loss per common share - basic and diluted Earnings Per Share [Text Block] Loss Per Share Employee Related Liabilities Current Accrued compensation Severance payment due to Dr. Platt Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Unrecognized compensation cost Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition 1 Unrecognized compensation cost, recognition period Employee Stock Option [Member] Stock Options Entities [Table] Entities [Table] Entity Central Index Key Entity Central Index Key Entity Common Stock Shares Outstanding Entity Common Stock, Shares Outstanding Entity [Domain] Entity [Domain] Entity Filer Category Entity Filer Category Entity Registrant Name Entity Registrant Name Equity [Abstract] Equity [Abstract] Equity Component [Domain] Equity Component [Domain] Equity Method Investments Equity investment Expiration Period of Agreements Expiration Period Of Agreements Option to purchase additional units to cover over-allotments Fair Value Adjustment Of Warrants Change in fair value of warrant liabilities Change in fair value of warrant liabilities Fair Value Assumptions Expected Term Warrant, expected life Fair Value Assumptions Risk Free Interest Rate Warrant, risk free interest rate Fair Value Assumptions Weighted Average Volatility Rate Warrant, volatility rate Fair Value By Fair Value Hierarchy Level [Axis] Fair Value, Hierarchy [Axis] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Fair Value Disclosures [Text Block] Fair Value of Financial Instruments Fair Value Inputs Level 2 [Member] Fair Value, Inputs, Level 2 Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Fair Value of Financial Instruments [Line Items] Fair Value Of Financial Instruments [Line Items] Fair Value of Financial Instruments [Line Items] Fair Value of Financial Instruments [Table] Fair Value Of Financial Instruments [Table] Fair Value of Financial Instruments [Table] General And Administrative Expense General and administrative General And Administrative Expense [Member] General and administrative Gross Proceeds from Issuance of Common Stock and Warrants Gross Proceeds From Issuance Of Common Stock And Warrants Gross proceeds from issuance of stock and warrants Impairment Of Intangible Assets Excluding Goodwill Write off of intangible assets Income Statement [Abstract] Income Statement [Abstract] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Increase Decrease In Accounts Payable And Accrued Liabilities Accounts payable and accrued expenses Increase Decrease In Operating Capital [Abstract] Changes in operating assets and liabilities: Increase Decrease In Other Noncurrent Liabilities Other long-term liabilities Increase Decrease In Prepaid Deferred Expense And Other Assets Prepaid expenses and other assets Intangible Assets Net Excluding Goodwill Intangible assets, net Interest Expense Interest expense Interest Paid SUPPLEMENTAL DISCLOSURE - Cash paid for interest Investment Income Interest Interest income Investment Type [Axis] Investment Type [Axis] Investment Type Categorization [Member] Investments [Domain] Issuance Of Common Stock And Warrants, Shares Issuance Of Common Stock And Warrants Shares Issuance of common stock and warrants Issuance of equity warrants in connection with equity offerings Issuance Of Equity Warrants In Connection With Equity Offerings Issuance of equity warrants in connection with equity offerings Issuance Of Warrants Price Per Share Issuance Of Warrants Price Per Share Closing price of warrant issued Issuance of warrants to induce conversion of notes payable Issuance Of Warrants To Induce Conversion Of Notes Payable Issuance of warrants to induce conversion of notes payable Issuance Of Warrants, Value Issuance Of Warrants Value Value of warrants Lawsuit Damage Claim Lawsuit Damage Claim Lawsuit payment Legal Entity [Axis] Legal Entity [Axis] Liabilities Total liabilities Liabilities And Stockholders Equity Total liabilities, redeemable convertible preferred stock and stockholders' (deficit) equity Liabilities And Stockholders Equity [Abstract] LIABILITIES, REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' (DEFICIT) EQUITY Liabilities Current Total current liabilities Liabilities Current [Abstract] Current liabilities: Maximum Development Budget Maximum Development Budget Estimated budget for work order Maximum [Member] Maximum Minimum Company Market Capitalization Minimum Company Market Capitalization Market capitalization Minimum [Member] Minimum Money Market Funds [Member] Money market funds Net Cash Provided By Used In Financing Activities Net cash provided by financing activities Net Cash Provided By Used In Financing Activities [Abstract] CASH FLOWS FROM FINANCING ACTIVITIES: Net Cash Provided By Used In Investing Activities Net cash provided by (used in) investing activities Net Cash Provided By Used In Investing Activities [Abstract] CASH FLOWS FROM INVESTING ACTIVITIES: Net Cash Provided By Used In Operating Activities Net cash used in operating activities Net cash used in operating activities Net Cash Provided By Used In Operating Activities [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Net Income Loss Net loss Net loss Net Income Loss Available To Common Stockholders Basic Net losses applicable to common stockholders Net loss applicable to common stockholders Nonoperating Income Expense Total other income (expense) Nonoperating Income Expense [Abstract] Other income (expense): Notice Period For Termination Of Agreement Notice Period For Termination Of Agreement Agreement termination notice period Notice Period To Cure Breach Of Agreement Notice Period To Cure Breach Of Agreement Breach of contract termination notice period Number Of Right Declared As Dividend Distribution For Each Outstanding Share Of Common Stock Number Of Right Declared As Dividend Distribution For Each Outstanding Share Of Common Stock Outstanding Dividend Rights Number Of Warrants Exercise Number Of Warrants Exercise Number of warrants required for extensions Operating Expenses Total operating expenses Operating Expenses [Abstract] Operating expenses: Operating Income Loss Total operating loss Organizational and Separation Related Charges Organizational And Separation Related Charges Separation based payments Organization Consolidation And Presentation Of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Other Accrued Liabilities Current Other Other Assets Noncurrent Other long term assets Other Liabilities Noncurrent Other long-term liabilities Other Nonoperating Income Other income Paid In Kind Interest Non-cash interest expense Payables And Accruals [Abstract] Payables and Accruals [Abstract] Payments To Acquire In Process Research And Development Agreement related payment Payments To Acquire Productive Assets Increase in patents costs and other assets Payments To Acquire Property Plant And Equipment Purchases of property and equipment Preferred Stock Accretion Of Redemption Discount Preferred stock accretion Preferred Stock Dividend Rate Percentage Rate of dividend Preferred Stock Dividends Income Statement Impact Preferred stock dividends Preferred Stock Dividends Shares Convertible preferred stock dividend (in shares) Preferred Stock Shares Authorized Series A 12% convertible preferred stock, shares authorized Preferred Stock Shares Issued Series A 12% convertible preferred stock, issued Preferred Stock Shares Outstanding Series A 12% convertible preferred stock, outstanding Preferred Stock Value Series A 12% convertible preferred stock; 5,000,000 shares authorized, 1,562,500 issued and outstanding at June 30, 2013 and December 31, 2012 Prepaid Expense And Other Assets Current Prepaid expenses and other current assets Principal shares [Member] Principal Shares [Member] Principal shares Proceeds From Convertible Debt Net proceeds from issuance of convertible debt instruments Proceeds From Issuance Of Common Stock Net proceeds from issuance of common stock and warrants Proceeds From Issuance Of Convertible Preferred Stock Net proceeds from issuance of convertible preferred stock and related warrants Proceeds From Issuance Of Redeemable Convertible Preferred Stock Net proceeds from issuance of redeemable convertible preferred stock and related warrants Proceeds From Issuance Or Sale Of Equity Net proceeds from issuance of stock and warrants Proceeds From Payments For Other Financing Activities Proceeds from shareholder advances The cash inflow associated with the amount received from holders exercising their stock options and warrants. Proceeds From Stock Option And Warrant Exercises Proceeds from exercise of common stock warrants and options Proceeds From Warrant Exercises Proceeds from exercise of warrants Property Plant And Equipment Net Property and equipment, net Public offering, net price per share Public Offering Net Price Per Share Public Offering price Range [Axis] Range [Axis] Range [Member] Range [Domain] Recognized Expenses Related To Agreement For Services Performed Recognized Expenses Related To Agreement For Services Performed Recognized expenses related to agreement for services performed Repayments Of Convertible Debt Repayment of convertible debt instruments Research And Development Arrangement Contract To Perform For Others By Type [Axis] Research and Development Arrangement, Contract to Perform for Others, Type [Axis] Research And Development Arrangement Contract To Perform For Others Type [Domain] Research and Development Arrangement, Contract to Perform for Others, Type [Domain] Research And Development Expense Research and development Research And Development Expense [Member] Research and development Royalty Revenue Royalty revenue Scenario Unspecified [Domain] Scenario, Unspecified [Domain] Schedule of Accrued Liabilities [Line Items] Schedule Of Accrued Liabilities [Line Items] Schedule of Accrued Liabilities [Line Items]