Accounting Policies [Abstract] Accounting Policies [Abstract] Accounts Payable and Accrued Liabilities, Current 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, Current 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 Accrual to payment cycle period. Accrual To Payment Cycle Period Accrual to payment cycle period Estimates for rebates, administrative fee arrangements, reimbursements, and similar payments to wholesalers and other distributors. Accrued Chargebacks Accrued chargebacks Accrued costs to run clinical trials for portfolio product or product candidates. Accrued Clinical Trial Costs Accrued clinical trial costs Accrued Employee Benefits, Current Accrued compensation and benefits Accrued costs to manufacture our products. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Accrued Manufacturing Costs Current Accrued manufacturing costs Accrued Marketing Costs, Current Accrued rebates Accrued estimates on account of billing adjustments, shelf stock adjustments, promotional payments, or other similar allowances affecting the licensed product. Accrued Price Adjustments Accrued price adjustments Accrued Royalties, Current Accrued royalties Accrued costs for the sales and marketing of our products and product candidates. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Accrued Sales And Marketing Costs Current Accrued sales and marketing costs Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Less accumulated depreciation Additional Paid in Capital Additional paid-in capital Additional Paid-in Capital [Member] Additional Paid-In Capital [Member] Adjustment to additional paid in capital, equity financing. Adjustment to additional paid in capital, equity financing Equity financing costs Allocated Share-based Compensation Expense Stock-based compensation expense 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) Cash used 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 Exercise price of warrants to purchase common stock Class of Warrant or Right, Number of Securities Called by Warrants or Rights Number of warrants to purchase common stock 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] Commitments and Contingencies Commitments and contingencies (Notes 7 and 11) Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies 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 issuance upon retirement. Common Stock Shares Issuance Upon Retirement Common stock issuance upon retirement, shares 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; 53,610,470 and 52,730,799 shares issued; 53,594,979 and 52,715,308 shares outstanding at March 31, 2016 and December 31, 2015, respectively Common stock value issuance upon retirement. Common Stock Value Issuance Upon Retirement Common stock issuance upon retirement Computer Equipment [Member] Computer Equipment and Software [Member] Consolidation, Policy [Policy Text Block] Principles of consolidation Contracts Revenue Contract revenues 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 (MidCap Loan) Debt Instrument [Axis] Debt Instrument [Axis] Long-term Debt, Gross Loan, gross Debt instrument closing fee. Debt Instrument, Closing Fee Closing fee from the prior loan Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Debt Instrument, Periodic Payment, Principal Principal payment per month Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [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, Refund Payments Deferred revenue refund payment Deferred revenue research and development. Deferred Revenue Research And Development Deferred revenue recognized during the period Deferred Revenue, Revenue Recognized Aggregate milestones and services revenue recognized Milestone payment upon regulatory approval deferred for future revenue recognition Depreciation Depreciation Description of royalty payment. Description Of Royalty Payment Royalty payment description Development And Exclusive License Option Agreement [Member] Development And Exclusive License Option Agreement [Member] Development and Exclusive License Option Agreement [Member] 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 and Diluted Basic and diluted loss per share: Employee [Member] Employee [Member] Employees [Member] Employee Retirement Date Employee Retirement Date Employee retirement date Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] 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 Extractive Industries [Abstract] Extractive Industries [Abstract] Final payment fees percentage. Final Payment Fees Percentage Final payment fee rate Founding Employee [Member] Founding Employee [Member] Dr. Andrew Finn [Member] General and Administrative Expense Selling, general and administrative Goodwill Goodwill Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Idle equipment. Idle Equipment [Member] Idle Equipment [Member] 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 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 Increase in interest rate upon default in credit agreement Increase In Interest Rate Upon Default In Credit Agreement Rate of interest applicable to obligations Initial payment for license agreement. Initial Payment For License Agreement Potential milestone payments upon FDA approval Intangible Assets Disclosure [Text Block] Other License Agreements and Acquired Product Rights Intangible Assets, Net (Excluding Goodwill) Other intangible assets, net Interest Expense Interest expense, net Interest Paid Cash paid for interest Inventory allowances recorded. Inventory Allowances Recorded Inventory allowances recorded 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 Issuance of common stock upon employee retirement. Issuance Of Common Stock Upon Employee Retirement Issuance of common stock upon employee retirement 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] License and supply agreement term. License And Supply Agreement Term Term of the agreement 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 Significant financing sources and revenue generated during period and managements plans. Liquidity And Managements Plan Disclosure [Text Block] Liquidity and Management's Plans Liquidity and managements plans. Liquidity And Managements Plans [Abstract] Liquidity And Managements Plans [Abstract] Notes Payable, Noncurrent Notes payable, less current maturities, net Machinery and Equipment [Member] Machinery and Equipment [Member] 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 payment received. Milestone Payment Received Milestone payment received Milestone payments. Milestone Payments Milestone payments 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 Net cash flows from operating activities Net Income (Loss) Attributable to Parent Net loss Net loss 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, net Number Of Clinical Trials Number Of Clinical Trials Number of clinical trials Number of largest wholesale customers. Number of Largest Wholesale Customers Number of large wholesalers 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 from operations Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Organization, Basis of Presentation and Summary of Significant Policies Other Accrued Liabilities, Current Accrued other Other Liabilities, Noncurrent Other long-term liabilities Other license agreements and acquired product rights. Other License Agreements And Acquired Product Rights [Line Items] Other License Agreements And Acquired Product Rights [Line Items] Other license agreements and acquired product rights. Other License Agreements And Acquired Product Rights [Table] Other License Agreements And Acquired Product Rights [Table] Other Nonoperating Income (Expense) Other (expense) income, net The year patents begin to expire. Patent Expiration Year Start Patent expiration year Patent extension year end. Patent Extension Year End Patent extension ending period Patent extension year start. Patent Extension Year Start Patent extension starting period 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 accruals accounted by wholesalers. Percentage of Accruals accounted By Wholesalers Percentage of accruals accounted by three large wholesalers 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 payments 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 shares of Series A Non-Voting Convertible Preferred Stock outstanding at March 31, 2016 and December 31, 2015 Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Prepayment premium as percentage of loan prepaid in first year. Prepayment Premium As Percentage Of Loan Prepaid In First Year Loan amount prepaid in the first year following execution of credit agreement 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 of Common Stock Proceeds from issuance of common stock Proceeds from Lines of Credit Net proceeds in aggregate amount Proceeds from (Repurchase of) Equity Equity financing costs Proceeds from Stock Options Exercised Proceeds from exercise of stock options 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 Equipment [Table Text Block] Summarized Category of Fixed Assets Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Range [Axis] Range [Axis] Range [Domain] Range [Domain] 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 Research and Development Expense [Member] Research and Development [Member] Amount of revenue earned as a result of reimbursement from research and development arrangements. Research And Development Reimbursements Deferred revenue from research and development activities 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 reduction percentage. Royalty Reduction Percentage Royalty reduction percentage 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 Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] Summary of Allocated Stock-based Compensation Expense 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 Stock 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 Secured Loan Facility [Member] Secured Loan Facility [Member] Secured Loan Facility [Member] Geographical [Domain] Geographical [Domain] Selling, General and Administrative Expenses [Member] Selling, General and Administrative [Member] Series A Preferred Stock [Member] Series A Preferred Stock [Member] Share-based Compensation Stock-based compensation expense Share-based Compensation, Allocation and Classification in Financial Statements [Abstract] Share-based Compensation, Allocation and Classification in Financial Statements [Abstract] 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 Number of equity instruments awarded in period 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 end 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 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 shares upon employee retirement. Stock Issued During Period Shares Upon Employee Retirement Stock issued during period shares upon employee retirement 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 Subsequent Event [Line Items] Subsequent Event [Line Items] Subsequent Event [Member] Subsequent Event [Member] Subsequent Events [Abstract] Subsequent Events [Abstract] Subsequent Events [Text Block] Subsequent Events Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] 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 TTY license and supply agreement. TTY License And Supply Agreement [Member] TTY License and Supply Agreement [Member] Type of Arrangement and Non-arrangement Transactions [Axis] Type of Arrangement and Non-arrangement Transactions [Axis] Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums Unamortized discount Upfront deferred revenue recorded. Upfront Deferred Revenue Recorded Deferred revenue related to upfront license fee Upfront payment of research and development expenses. Upfront Payment Of Research And Development Expenses Upfront payment UNITED STATES U.S. [Member] Use of Estimates, Policy [Policy Text Block] Use of estimates in financial statements Weighted Average Number of Shares Outstanding, Basic Weighted average common stock shares outstanding: