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and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Number of business activities Number Of Business Activities Number Of Business Activities Unrecognized compensation cost, stock options Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount TOTAL ASSETS Assets Cost of goods sold Cost of Goods and Services Sold Line of credit outstanding Long-Term Line of Credit Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Cash and cash equivalents at Cash and Cash Equivalents [Abstract] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Other long-term liabilities Other Liabilities, Noncurrent Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Commitments and contingencies (Note 6) Commitments and Contingencies Accrued royalty Accrued Royalties, Current Risk-free interest rate, minimum (percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum Accrued rebates Accrued Rebates, Current Accrued Rebates, Current Termination Date Trading Arrangement Termination Date Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Expected volatility of common stock, maximum (percent) Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum The Company and Nature of Business Nature of Operations [Text Block] Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Price per Share (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities 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Three PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Schedule of Marketable Securities Marketable Securities [Table Text Block] Adjustment to Compensation: Adjustment to Compensation [Axis] Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table] Subsidiary or Equity Method Investee, Sale of Stock, Type [Table] Document Transition Report Document Transition Report Document Quarterly Report Document Quarterly Report Purchase commitments related to inventory management and training materials Purchase Obligation Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Current Reporting Status Entity Current Reporting Status Accumulated Deficit Retained Earnings [Member] Amortization of debt 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in Stockholders' Equity [Roll Forward] Accrued professional services Accrued Professional Fees, Current Executive Category: Executive Category [Axis] Name Awards Close in Time to MNPI Disclosures, Individual Name Construction in progress Construction in Progress [Member] Entity Filer Category Entity Filer Category Income Statement Location [Domain] Statement of Income Location, Balance [Domain] Company Selected Measure Name Company Selected Measure Name