Accounting Policies [Abstract] Accounting Policies [Abstract] Accounts Payable and Accrued Liabilities, Current Accounts payable and accrued liabilities Accounts Payable and Accrued Liabilities Total accounts payable and accrued expenses Accounts Payable and Accrued Liabilities Disclosure [Text Block] Accounts Payable and Accrued Liabilities Accounts Payable Accounts payable Accounts Receivable Collection Period Accounts Receivable Collection Period Period of payments from customers Accounts Receivable, Net, Current Accounts receivable, net Accretion Expense Accretion of debt discount Accrued chargebacks. Accrued Chargebacks Accrued chargebacks Accrued Employee Benefits Accrued compensation and benefits Accrued Marketing Costs, Current Accrued rebates Accrued Price Adjustments Accrued Price Adjustments Accrued price adjustments Accrued Royalties Accrued royalties Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less accumulated depreciations Additional Paid in Capital Additional paid-in capital Additional Paid-in Capital [Member] Additional Paid-In Capital [Member] Adjustments to Additional Paid in Capital, Warrant Issued Short swing profit return Adjustment To Additional Paid In Capital Short Swing Profit Recovery Adjustment To Additional Paid In Capital Short Swing Profit Recovery Short swing profits recovered Amendment Flag Amendment Flag Amortization of Intangible Assets Amortization of intangible assets Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Securities excluded from computation of diluted earnings per share Arcion license agreement. Arcion License Agreement [Member] Arcion Agreement [Member] Arrangements and Non-arrangement Transactions [Domain] Endo License and Development Agreement [Member] Assets Total assets Assets [Abstract] ASSETS Assets, Current Total current assets Assets, Current [Abstract] Current assets: Award Type [Axis] Award Type [Axis] 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] Bunavail [Member] Bunavail [Member] Bunavail [Member] Business Combinations [Abstract] Business Combinations [Abstract] Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents at end of year Cash and cash equivalents at beginning of year Cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Net change in cash and cash equivalents Class of Stock [Domain] Class of Stock [Domain] Class of Warrant or Right, Exercise Price of Warrants or Rights Weighted Average Exercise Price Clinical Trials Full Enrollment [Member] Clinical Trials Full Enrollment [Member] Clinical Trials Full Enrollment [Member] Clinical Trials One [Member] Clinical Trials One [Member] Clinical Trials One [Member] Clinical Trials Two [Member] Clinical Trials Two [Member] Clinical Trials Two [Member] Commitment and contingencies patent infringement lawsuit against entity rejected by regulating authority patents number. Commitment And Contingencies Patent Infringement Lawsuit Against Entity Rejected By Regulating Authority Patents Number Number of Patents under infringement Lawsuit, against the entity rejected by USPTO Commitments and Contingencies Commitments and contingencies (Notes 6 and 10) Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Common Shares Issued Upon Conversion Of Preferred Stock Shares Common Shares Issued Upon Conversion Of Preferred Stock Shares Conversion of preferred shares to common shares, shares Common Shares Issued Upon Conversion Of Preferred Stock Value Common Shares Issued Upon Conversion Of Preferred Stock Value Conversion of preferred shares to common shares Common Stock [Member] Common Stock [Member] 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 Common Stock, Value, Issued Common Stock, $.001 par value; 75,000,000 shares authorized; 52,381,638 and 51,603,070 shares issued; 52,366,147 and 51,587,579 shares outstanding at March 31, 2015 and December 31, 2014, respectively Computer Equipment [Member] Computer Equipment and Software [Member] Contracts Revenue Contract revenue Contracts revenue Convertible Preferred Stock [Member] Series A Non-Voting Convertible Preferred Stock [Member] Cost of Revenue Cost of sales Cost of Sales, Policy [Policy Text Block] Cost of Sales Current Fiscal Year End Date Current Fiscal Year End Date Debt Disclosure [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Text Block] Note Payable Debt Instrument, Convertible, Remaining Discount Amortization Period Amortization Period of Discount Debt Instrument, Unamortized Discount Unamortized discount net Debt [Line Items] Debt [Line Items] Debt [Line Items] Debt [Table] Debt [Table] Debt [Table] Deferred Charges, Policy [Policy Text Block] Deferred Cost of Sales Deferred Costs, Current Deferred cost of sales Deferred Revenue Deferred revenue related to sales Deferred Revenue, Current Deferred revenue, current Deferred Revenue, Noncurrent Deferred revenue, long-term Deferred revenue research and development. Deferred Revenue Research And Development Deferred revenue from research and development activities Deferred Revenue, Revenue Recognized Aggregate milestones and services revenue recognized Definitive Development And Exclusive License Option Agreement[Member] Definitive Development And Exclusive License Option Agreement[Member] Definitive Development And Exclusive License Option Agreement[Member] Depreciation, Depletion and Amortization Depreciation Derivative, Gain (Loss) on Derivative, Net Derivative loss Derivative loss Directors and employees. Directors And Employees [Member] Directors and Employees [Member] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Document and entity information. Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Document Period End Date Document Period End Date Document Type Document Type Earnings Per Share, Basic Basic earnings per share Earnings Per Share, Diluted Diluted earnings per share Employee service share based compensation non vested awards compensation cost to be recognized year Employee Service Share Based Compensation Non Vested Awards Compensation Cost To Be Recognized Year Unrecognized compensation cost related to non-vested share-based compensation awards granted year Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Unrecognized compensation cost related to non-vested share-based compensation awards granted Endo license and development agreement. Endo License And Development Agreement [Member] Endo Agreement [Member] 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 Overview Policy [Text Block] Entity Overview Policy [Text Block] Overview Entity Registrant Name Entity Registrant Name Equity [Abstract] Equity [Abstract] Equity Component [Domain] Equity Component [Domain] Executive Officer [Member] Executive Officer [Member] Exit fee percent. Exit Fee Percent Exit fee percentage recorded as deferred loan costs Final payment fees percentage. Final Payment Fees Percentage Final payment fee rate Goodwill Goodwill Idle equipment. Idle Equipment [Member] Idle Equipment [Member] Income Statement [Abstract] Income Statement [Abstract] Increase (Decrease) in Accounts Payable and Accrued Liabilities Accounts payable and accrued expenses Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Deferred Revenue Deferred revenue Increase (Decrease) in Inventories Inventories Increase (Decrease) in Operating Capital [Abstract] Changes in assets and liabilities: Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other assets Initial payment for license agreement. Initial Payment For License Agreement Potential milestone payments upon FDA approval Intangible Assets, Net (Excluding Goodwill) Other intangible assets, net Interest Income (Expense), Net Interest expense, net Interest Paid Cash paid for interest Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Inventory Disclosure [Text Block] Inventory Inventory, Finished Goods, Net of Reserves Finished Goods Inventory, Net Inventory Total Inventories Inventory, Policy [Policy Text Block] Inventory Inventory, Raw Materials and Supplies, Net of Reserves Raw Materials & Supplies Inventory, Work in Process, Net of Reserves Work-in-process Inventory Write-down Inventory Write down Leasehold Improvements [Member] Leasehold Improvements [Member] Legal Entity [Axis] Legal Entity [Axis] Liabilities Total liabilities Liabilities and Equity Total liabilities and stockholders' equity Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities, Current Total current liabilities Liabilities, Current [Abstract] Current liabilities: Libor floor rate. Libor Floor Rate LIBOR floor rate License agreement acquisition. License Agreement Acquisition Disclosure [Text Block] License Obligations License and development agreement term. License And Development Agreement Term Term of Endo Agreement License And Development Agreement [Text Block] License And Development Agreement [Text Block] License and Development Agreements License and Development Agreement (Textual) [Abstract] License And Development Agreement Textual [Abstract] License And Development Agreement Textual [Abstract] Line of Credit Facility, Current Borrowing Capacity Secured loan facility Line of Credit Facility, Interest Rate at Period End Interest rate at period end Line of Credit Facility, Interest Rate During Period Interest rate Line of credit facility repayment term. Line Of Credit Facility Repayment Term Term of loan Liquidity and managements plans. Liquidity And Managements Plans [Abstract] Liquidity And Managements Plans [Abstract] Liquidity Disclosure [Policy Text Block] Liquidity and Management's Plans Long-term Debt Secured loan facility due to Midcap Notes Payable, Noncurrent Notes payable, less current maturities, net Machinery and Equipment [Member] Machinery and Equipment [Member] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] Maximum [Member] Maximum [Member] Mid cap. Mid Cap [Member] Mid Cap [Member] Milestone payment receivable from sublicensees. Milestone Payment Receivable From Sublicensees Milestone payments receivable from sublicenses Milestone payments increased. Milestone Payments Increase Decrease Increase in milestone payments Milestone sales. Milestone Sales Milestone Sales Milestones. Milestones [Member] Milestones [Member] Minimum [Member] Minimum [Member] Net Cash Provided by (Used in) Financing Activities [Abstract] Financing activities: Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net cash flows from financing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Investing activities: Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net cash flows from investing activities Net Cash Provided by (Used in) Operating Activities [Abstract] Operating activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations Cash from operations Net cash flows from operating activities Net Income (Loss) Attributable to Parent Net loss Net Income (Loss) Available to Common Stockholders, Basic Net loss attributable to common stockholders New Accounting Pronouncements, Policy [Policy Text Block] Recent Accounting Pronouncements Non refundable payment received. Non Refundable Payment Received Non-refundable payment received Notes Payable, Current Notes payable, current maturities Number Of Clinical Trials Number Of Clinical Trials Number of clinical trials Number Of Executive Officers Number Of Executive Officers Number of executive officers from whom swing profits were recovered Number Of License Agreement Number Of License Agreement Number of license agreements granted Number of potential sales milestones. Number Of Potential Sales Milestones Number of potential sales milestones Offered Period for Sales Return Prior to Expiration Offered Period for Sales Return Prior to Expiration Offered period for sales return prior to expiration Offered Period for Sales Return Subsequent to Expiration Offered Period for Sales Return Subsequent to Expiration Offered period for sales return subsequent to expiration Office Equipment [Member] Office Furniture and Equipment [Member] Operating Expenses Total expenses Operating Expenses [Abstract] Expenses: Operating Income (Loss) (Loss) income from operations Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Organization, Basis of Presentation and Summary of Significant Policies Other Accrued Liabilities Accrued other Other Assets, Noncurrent Other assets Other Liabilities, Noncurrent Other long-term liabilities Other Nonoperating Income (Expense) Other income, net Others. Others [Member] Others [Member] The year patents begin to expire. Patent Expiration Year Start Patent expiration year Payables and Accruals [Abstract] Payables and Accruals [Abstract] Payments receivable on achievement of potential sales milestones. Payments Receivable On Achievement Of Potential Sales Milestones Payment receivable on achievement of potential sales milestones Payments to Acquire Property, Plant, and Equipment Purchase of equipment Percentage of closing fees paid on aggregate amount. Percentage Of Closing Fees Paid On Aggregate Amount Closing fee Percentage Of Credit Against Potential Future Milestone Percentage Of Credit Against Potential Future Milestone Percentage of credit against potential future milestones Percentage Of Reimbursement Expenses Percentage Of Reimbursement Expenses Reimbursement rate of costs by Endo to the company as per agreement Potential milestone payment receivable intellectual property. Potential Milestone Payment Receivable Intellectual Property Potential milestone payments on intellectual property rights Potential Milestone Payment Receivable Regulatory Approval Potential Milestone Payment Receivable Regulatory Approval Potential milestone payment receivable upon regulatory approval Potential Milestone Payment Received Clinical Development Potential Milestone Payment Received Clinical Development Potential milestone payment received, clinical development Potential payments upon achievement of predetermined sales. Potential Payments Upon Achievement Of Predetermined Sales Potential Payments upon achieving certain pre-determined sales thresholds in the U.S Potential cash or stock payment upon NDA filing and acceptance. Potential Payments Upon Filing And Acceptance Potential payment upon filing and acceptance Potential payments upon filing and acceptance Preferred Stock, Par or Stated Value Per Share Preferred Stock, par value Preferred Stock, Shares Authorized Preferred Stock, shares authorized Preferred Stock, Shares Outstanding Preferred Stock, shares outstanding Preferred Stock, Value, Issued Preferred Stock, $.001 par value; 5,000,000 shares authorized; 2,093,155 and 2,139,000 shares of Series A Non-Voting Convertible Preferred Stock outstanding at March 31, 2015 and December 31, 2014, respectively. Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Prepayment premium as percentage of loan prepaid in subsequent year. Prepayment Premium As Percentage Of Loan Prepaid In Subsequent Year Loan amount prepaid in each year thereafter Proceeds from Issuance or Sale of Equity Proceeds from sales of securities Proceeds from Lines of Credit Net proceeds in aggregate amount Proceeds from Stock Options Exercised Proceeds from exercise of stock options Proceeds from Warrant Exercises Proceeds from exercise of common stock warrants Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment Disclosure [Text Block] Property and Equipment Property, Plant and Equipment, Gross Property, plant & equipment, gross Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property, Plant and Equipment, Net Property and equipment, net Total property, plant & equipment, net Property Plant And Equipments [Abstract] Property Plant And Equipments [Abstract] Property Plant And Equipments [Abstract] Property, Plant and Equipment [Table Text Block] Summarized Category of Fixed Assets Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Property Plant and Equipment Useful Life and Values [Abstract] Property Plant and Equipment Useful Life and Values [Abstract] Property Plant and Equipment Useful Life and Values [Abstract] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Recognition of Deferred Revenue Recognition of deferred revenue Recognized up-front payment allocated to license. Recognized Up Front Payment Allocated To License Recognized up-front payment allocated to the license Recognized up-front payment to clinical trial material and development services. Recognized Up Front Payment To Clinical Trial Material And Development Services Recognized up-front payment to clinical trial material and development services Reimbursement Of Cost Incurred Reimbursement Of Cost Incurred Total rate of reimbursable contractor costs borne Related Party Transaction [Axis] Related Party Transaction [Axis] Related Party Transaction [Domain] Related Party Transaction [Domain] Repayments of Notes Payable Payment on note payable Research and Development Arrangement, Contract to Perform for Others, Type [Axis] Research and Development Arrangement, Contract to Perform for Others, Type [Axis] Research and Development Arrangement, Contract to Perform for Others [Line Items] Research and Development Arrangement, Contract to Perform for Others [Line Items] 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 Amount of revenue earned as a result of reimbursement from research and development arrangements. Research And Development Reimbursements Deferred revenue recognized during the period Research and development reimbursements Restricted Stock Units (RSUs) [Member] Restricted Stock Units (RSUs) [Member] Retained Earnings (Accumulated Deficit) Accumulated deficit Retained Earnings [Member] Accumulated Deficit [Member] Receipt of recovery of short swing profits by stockholder. Return Of Short Swing Profits Return of short swing profits Revenue Recognition, Deferred Revenue [Policy Text Block] Deferred Revenue Revenue Recognition, Milestone Method [Line Items] Revenue Recognition, Milestone Method [Line Items] Revenue Recognition, Milestone Method [Table] Revenue Recognition, Milestone Method [Table] Revenue Recognition, Policy [Policy Text Block] Revenue Recognition Revenues Total revenues Revenues [Abstract] Revenues: Royalty Revenue Product royalty revenues Royalty term description. Royalty Term Description Royalty term description Sales Discounts In Percentages. Sales Discounts Percentage Discount for prompt payment Sales Returns Goods Period Sales Returns Goods Period Sales return maximum duration Sales Revenue, Goods, Net Product sales Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Summary of Components of Accounts Payable and Accrued Liabilities Schedule of Inventory, Current [Table Text Block] Summary of Inventories Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Schedule of Research and Development Arrangement, Contract to Perform for Others [Table] Schedule of Research and Development Arrangement, Contract to Perform for Others [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] Summary of Restricted Stock Activity Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Summary of Option Activity Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Weighted Average for Key Assumptions Used in Determining Fair Value of Options Granted Geographical [Domain] Geographical [Domain] Selling, General and Administrative Expense Selling, general and administrative Series A Preferred Stock [Member] Series A Preferred Stock [Member] Share-based Compensation Stock-based compensation expense Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Vesting period of shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Number of Restricted Shares, Forfeitures Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Weighted Average Fair Market Value Per RSU, Forfeitures Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Company Issued, RSUs Number of Shares, Granted Share based compensation arrangement by share based payment award equity instruments other than options grants in period fair value. Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Fair Value Fair market value of RSUs granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted Average Fair Market Value Per RSU, Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Number of Restricted Shares, Outstanding at end of period Number of Restricted Shares, Outstanding at beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Weighted Average Fair Market Value Per RSU, Outstanding at end of period Weighted Average Fair Market Value Per RSU, Outstanding at beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Number of Restricted Shares, Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Weighted Average Fair Market Value Per RSU, Vested Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Weighted average expected life in years Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Expected price volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Stock option exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Number of Shares, Forfeitures Share based compensation arrangement by share based payment award options granted in period fair value. Share Based Compensation Arrangement By Share Based Payment Award Options Granted In Period Fair Value Fair market value of shares granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Number of Shares, Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate Intrinsic Value, Outstanding at beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Number of Shares, Outstanding at end of period Number of Shares, Outstanding at beginning of period Warrants Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted Average Exercise Price Per Share, Outstanding at end of period Weighted Average Exercise Price Per Share, Outstanding at beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Vesting period of options Equity Award [Domain] Equity Award [Domain] Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted average Exercise Price Per Share, Exercised Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Weighted Average Exercise Price Per Share, Forfeitures Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Weighted Average Exercise Price Per Share, Granted Share based compensation arrangements by share based payment award term of options granted. Share Based Compensation Arrangements By Share Based Payment Award Term Of Options Granted Term of options granted period Shares, Issued Ending Balance, shares Beginning Balance, shares Class of Stock [Axis] Class of Stock [Axis] Equity Components [Axis] Equity Components [Axis] Geographical [Axis] Geographical [Axis] Statement [Line Items] Statement [Line Items] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Stockholders' Equity Attributable to Parent Ending Balance Beginning Balance Stockholders' equity Total stockholders' equity Stockholders' Equity Attributable to Parent [Abstract] Stockholders' equity: Stockholders' Equity Note Disclosure [Text Block] Stockholders' Equity Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Restricted stock awards, shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Exercise of stock options, shares Number of Shares, Exercised Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Restricted stock awards Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Stock-based compensation Stock Issued During Period, Value, Stock Options Exercised Exercise of stock options Text Block [Abstract] Text Block [Abstract] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Trading Symbol Trading Symbol Treasury Stock [Member] Treasury Stock [Member] Treasury Stock, Shares Treasury stock, shares Treasury Stock, Value Treasury stock, at cost, 15,491 shares Type of Arrangement and Non-arrangement Transactions [Axis] Type of Arrangement and Non-arrangement Transactions [Axis] Upfront fees assigned to deliverables consisting of intellectual property component value. Upfront Fees Assigned To Deliverables Consisting Of Intellectual Property Component Value Upfront payment UNITED STATES U.S. [Member] Use of Estimates, Policy [Policy Text Block] Use of Estimates in Financial Statements Warrant [Member] Warrant [Member] Weighted Average Number of Shares Outstanding, Basic Weighted average common stock shares outstanding