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Commissions payable Accrued Sales Commission, Current Total Lessee, Operating Lease, Liability, to be Paid 2022 Lessee, Operating Lease, Liability, to be Paid, Year One Cash paid for income taxes Income Taxes Paid Options outstanding, net of awards expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Related party purchase Related Party Transaction, Purchases from Related Party 2025 Lessee, Operating Lease, Liability, to be Paid, Year Four Foreign Currency Translation Foreign Currency Transactions and Translations Policy [Policy Text Block] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Commissions and incentives Commission And Incentives Expenses related to commissions and other incentives earned by independent distributors. 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Remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Entity Emerging Growth Company Entity Emerging Growth Company Exercise of options Stock Issued During Period, Value, Stock Options Exercised Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Deferred income tax Deferred Income Tax Expense (Benefit) 2010 Long-Term Incentive Plan Two Thousand And Ten Long Term Incentive Plan [Member] Two thousand and ten long term incentive plan. Preferred stock, par value (USD per share) Preferred Stock, Par or Stated Value Per Share Percent of total inventory (in percentage) Inventory, Percent Of Total Inventory Inventory, Percent Of Total Inventory Maximum capacity on draw Line of Credit Facility, Maximum Borrowing Capacity Award Type [Axis] Award Type [Axis] Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Asia/Pacific & Europe Asia Pacific And Europe [Member] Asia Pacific And Europe [Member] March 2016 Term Loan March 2016 Term Loan [Member] March 2016 Term Loan [Member] Purchase of equipment Payments to Acquire Property, Plant, and Equipment City Area Code City Area Code Maximum Maximum [Member] Amortization of deferred financing fees Amortization of Debt Issuance Costs Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Document Period End Date Document Period End Date Accumulated Deficit Retained Earnings [Member] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Common Stock, capital shares reserved for future issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Net Cash Used in Investing Activities Net Cash Provided by (Used in) Investing Activities Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Stock repurchase program authorized amount Stock Repurchase Program, Authorized Amount Income tax receivable Increase (Decrease) in Income Taxes Receivable Right to purchase common stock, non-vested and outstanding, exercise price (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Option, Nonvested, Weighted Average Exercise Price Equity Award [Domain] Award Type [Domain] Income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Lease term Lessee, Operating Lease, Term of Contract 2018 Performance Plan Two Thousand Eighteen Performance Incentive Plan [Member] Two Thousand Eighteen Performance Incentive Plan Prepaid expenses and other Increase (Decrease) in Prepaid Expense Trading Symbol Trading Symbol Components of inventory Schedule of Inventory, Current [Table Text Block] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] Stock-based compensation Share-based Payment Arrangement, Noncash Expense Repurchase of company stock Stock Repurchased During Period, Value Claims dismissed Loss Contingency, Claims Dismissed, Number Shares purchased and canceled as payment of tax withholding Payment, Tax Withholding, Share-based Payment Arrangement Sandy, UT Sandy, UT [Member] Sandy, UT Cover [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Current liabilities Liabilities, Current [Abstract] Entity Shell Company Entity Shell Company Shares canceled or surrendered as payment of tax withholding (in shares) Shares canceled or surrendered as payment of tax withholding (in shares) Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Segment Information Segment Reporting, Policy [Policy Text Block] Income tax payable Taxes Payable Statement of Financial Position [Abstract] Statement of Financial Position [Abstract]