Inventory Disclosure [Abstract] Inventory deposits with third-party manufacturers Inventory Deposit Represents inventory deposits with third party manufacturers. Equity [Abstract] TREASURY STOCK Treasury Stock [Text Block] Document and Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Trading Symbol Trading Symbol Amendment Flag Amendment Flag Current Fiscal Year End Date Current Fiscal Year End Date Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Voluntary Filers Entity Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Public Float Entity Public Float Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Mophie Inc Mophie Inc [Member] Mophie Inc [Member]. Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Tradenames Trade Names [Member] Patents and technology Patented Technology [Member] Customer relationships Customer Relationships [Member] Non-compete agreements Noncompete Agreements [Member] Backlog Order or Production Backlog [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Intangible asset class Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Weighted-average amortization period Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Finished goods Inventory, Finished Goods, Gross Raw materials Inventory, Raw Materials, Gross Total inventories Inventory, Net Accounting Policies [Abstract] Allowance for Doubtful Accounts [Roll Forward] Allowance for Doubtful Accounts Receivable [Roll Forward] Balance at beginning of year Allowance for Doubtful Accounts Receivable Additions charged to expense Provision for Doubtful Accounts Assumed in acquisition of mophie Assumed In Acquisition Assumed in acquisition. Write-offs charged against the allowance Allowance for Doubtful Accounts Receivable, Write-offs Foreign currency translation gain (loss) Allowance For Doubtful Accounts Receivable Foreign Currency Translation Loss Allowance for doubtful accounts receivable foreign currency translation loss. Balance at end of year Segment Reporting [Abstract] Number of operating segments Number of Operating Segments Quarterly Financial Information Disclosure [Abstract] Quarterly financial information Quarterly Financial Information [Table Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill [Roll Forward] Goodwill [Roll Forward] Beginning Balance Goodwill Increase due to acquisitions Goodwill, Acquired During Period Ending Balance Risks and Uncertainties [Abstract] CONCENTRATIONS Concentration Risk Disclosure [Text Block] Defined Contribution Plan [Abstract] DEFINED CONTRIBUTION PLAN Defined Contribution Plan [Text Block] The entire disclosure for an entity's employee compensation and benefit plans, including defined contribution plan. QUARTERLY FINANCIAL DATA (UNAUDITED) Quarterly Financial Information [Text Block] Statement of Financial Position [Abstract] Allowances for doubtful accounts Accumulated depreciation on property and equipment Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accumulated amortization on intangible assets Finite-Lived Intangible Assets, Accumulated Amortization Deferred loan costs, current Deferred Costs, Current Deferred loan costs, non current Deferred Costs Common stock, par value (in usd per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Treasury stock (in shares) Treasury Stock, Shares Treasury Stock (Textual) Treasury Stock (Textual) [Abstract] Number of repurchase of shares authorized by board of directors Stock Repurchase Program, Authorized Amount Remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Treasury stock purchased (in shares) Treasury Stock, Shares, Acquired Cash consideration paid for repurchase of common stock Payments for Repurchase of Common Stock Commissions paid to brokers Commissions Paid To Brokers Commissions paid to brokers. Weighted average price per share of stock repurchase (in usd per share) Treasury Stock Acquired, Average Cost Per Share GOODWILL AND INTANGIBLE ASSETS Goodwill and Intangible Assets Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] Foreclosure shares of stock collateralizing note receivable (shares) Foreclosure Shares Of Stock Collateralizing Note Receivable Shares Foreclosure shares of stock collateralizing note receivable shares. Income Tax Disclosure [Abstract] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis] Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name [Domain] Capital Loss Carryforward Capital Loss Carryforward [Member] Research Tax Credit Carryforward Research Tax Credit Carryforward [Member] Tax Period [Axis] Tax Period [Axis] Tax Period [Domain] Tax Period [Domain] Tax year 2012-2014 Tax Year 2012-2014 [Member] Tax Year 2012-2014 [Member] Tax Year 2015 Tax Year 2015 [Member] Variable Interest Entities [Axis] Variable Interest Entities [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] HzO, Inc Variable Interest Entity, Primary Beneficiary [Member] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Income Taxes Textual [Abstract] Income Taxes Textual [Abstract] Transition tax on accumulated foreign earnings, amount Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense Mandatory repatriation of foreign earnings Effective Income Tax Rate Reconciliation,Tax Cuts and Jobs Act of 2017, Transition Tax on Accumulated Foreign Earnings, Amount Effective Income Tax Rate Reconciliation,Tax Cuts and Jobs Act of 2017, Transition Tax on Accumulated Foreign Earnings, Amount Revaluation of deferred income taxes from U.S. tax reform Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Provisional Income Tax Expense (Benefit) Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Provisional Income Tax Expense (Benefit) Deferred tax assets, valuation allowance Deferred Tax Assets, Valuation Allowance Tax credit carryforward, valuation allowance Tax Credit Carryforward, Valuation Allowance Federal net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards, Foreign State net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards, State and Local Undistributed foreign earnings Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Provisional Undistributed Accumulated Earnings of Foreign Subsidiary Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Provisional Undistributed Accumulated Earnings of Foreign Subsidiary Tax contingency Effective Income Tax Rate Reconciliation, Tax Contingency, Foreign, Amount Unrecognized tax benefits Unrecognized Tax Benefits Unrecognized tax benefits that would impact effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Increase taxable income Income Tax Examination, Settlement, Increase In Taxable Income Income Tax Examination, Settlement, Increase In Taxable Income Research and development expense Income Tax Examination, Settlement, Increase In Research And Development Credit Income Tax Examination, Settlement, Increase In Research And Development Credit Bad debt reserve for tax purposes Income Tax Examination, Settlement, Adjustment For Bad Debt Reserve Income Tax Examination, Settlement, Adjustment For Bad Debt Reserve Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Other Other Intangible Assets [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Gross Carrying Amount Finite-Lived Intangible Assets, Gross Impairments Impairment of Intangible Assets, Finite-Lived, Gross Impairment of Intangible Assets, Finite-Lived, Gross Acquisitions Finite-lived Intangible Assets Acquired Accumulated Amortization Net Carrying Amount Finite-Lived Intangible Assets, Net Weighted Average Amortization Period Finite-Lived Intangible Asset, Useful Life Current benefit (provision): Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Current Federal Tax Expense (Benefit) State Current State and Local Tax Expense (Benefit) Foreign Current Foreign Tax Expense (Benefit) Total current Current Income Tax Expense (Benefit) Deferred benefit (provision): Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Deferred Federal Income Tax Expense (Benefit) State Deferred State and Local Income Tax Expense (Benefit) Foreign Deferred Foreign Income Tax Expense (Benefit) Total deferred Deferred Income Tax Expense (Benefit) Total benefit (provision) Income Tax Expense (Benefit) ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] RESTRICTED STOCK Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Deferred tax assets: Deferred Tax Assets, Gross [Abstract] Allowance for doubtful accounts Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts Property and equipment Deferred Tax Assets, Property, Plant and Equipment Deferred revenue Deferred Tax Assets, Deferred Income Inventories Deferred Tax Assets, Inventory Stock-based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Sales returns accrual Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Returns and Allowances Acquisition costs, net of amortization Deferred Tax Assets Acquisition Costs Net Of Amortization Represents the amount of deferred tax assets acquisition costs net of amortization.Represents the amount of deferred tax assets acquisition costs net of amortization. Intangible assets Deferred Tax Assets Intangible Assets Represents an amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from Intangible assets. Goodwill Deferred Tax Assets Goodwill Represents an amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from Intangible assets.Represents an amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from Intangible assets. HzO investment Deferred Tax Assets, Investments Capital loss carry-over Deferred Tax Assets, Capital Loss Carryforwards Reserve on note receivable Deferred Tax Assets Reserve On Note Receivable Represents the amount of deferred tax assets, reserve on note receivable.Represents the amount of deferred tax assets, reserve on note receivable. Net operating loss carryforward Deferred Tax Assets, Operating Loss Carryforwards Federal and state credit carryforwards Deferred Tax Assets Federal Credit Carryforwards Amount before allocation of valuation allowances of deferred tax asset attributable to deductible federal credit carryforwards. Other liabilities Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other Total gross deferred tax assets Deferred Tax Assets, Gross Valuation allowance Total deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Deferred tax liabilities: Deferred Tax Liabilities, Gross [Abstract] Property and equipment Deferred Tax Liabilities, Property, Plant and Equipment Other Deferred Tax Liabilities, Other Total gross deferred tax liabilities Deferred Tax Liabilities, Gross Net deferred tax assets Deferred Tax Assets, Net Schedule of inventories Schedule of Inventory, Current [Table Text Block] Schedule of allowance for doubtful accounts activity Schedule Of Allowance For Doubt Ful Accounts [Table Text Block] Represents the tabular disclosure for summarized activity of allowance for doubtful accounts. Schedule of sales return, warranty, and other credits liability Schedule Of Sales Return And Warranty Liability [Table Text Block] Represents the entire tabular disclosure about sales return and warranty liability. Schedule of reconciliation of numerator and denominator used to calculate basic earnings per share and diluted earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Prelminary Allocation Scenario, Previously Reported [Member] Adjustments to Working Capital and Fair Value Restatement Adjustment [Member] Aquisition of Mophie Inc. (Textual) Business Acquisition [Abstract] Acquisition of Mophie (Textual) Cash consideration Business Combination, Consideration Transferred Earn out consideration Earn Out Consideration Earnout is a contractual provision stating that the seller of a business is to obtain additional future compensation based on the business achieving certain future financial goals. Paid to principal shareholders in escrow account Escrow Deposit Insurance policy amount Premiums Receivable, Allowance for Doubtful Accounts, Recoveries Insurance policy deductible amount Business Acquisition, Insurance Policy, Deductible Business Acquisition, Insurance Policy, Deductible Negative working capital at Acquisition Date Business Combination Working Capital Adjustment The increase (decrease) during the reporting period of all assets and liabilities used in operating activities. Working capital adjustment, net Business Combination Working Capital Adjustment Net The net increase (decrease) during the reporting period of all assets and liabilities used in operating activities. Additional working capital deficit Business Combination Additional Working Capital Adjustment Negative working capital at acquisition date. Purchase price Payments to Acquire Businesses, Net of Cash Acquired Adjustments to fair value of working capital Business Combination, Contingent Consideration, Liability Transaction costs Business Combination, Acquisition Related Costs Goodwill acquired for deductible for tax purposes Business Acquisition, Goodwill, Expected Tax Deductible Amount Net sales Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Net loss before tax Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Pro forma net loss amortization expense Business Acquisition Pro Forma Net Income Expenses The pro forma net income or expenses for the period as if the business combination or combinations had been completed at the beginning of a period. Amortization of debt issuance cost Amortization of Debt Issuance Costs and Discounts Business acquisition pro forma information Business Acquisition Pro Forma Information It represents of the pro forma information, nature of adjustments made to historical information to arrive at pro forma amounts, amounts excluded from pro forma information, any material-nonrecurring items included in the pro forma information and limitations of pro forma disclosures. Commitments and Contingencies Disclosure [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Litigation Case [Axis] Litigation Case [Axis] Litigation Case [Domain] Litigation Case [Domain] Daniel Huang, Individually and As Shareholder Representative v. ZAGG , Inc Daniel Huang, Individually and As Shareholder Representative v. ZAGG , Inc [Member] Daniel Huang, Individually and As Shareholder Representative v. ZAGG , Inc. [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Rental payment of leases Operating Leases, Rent Expense Damages sought Loss Contingency, Damages Sought, Value Damages exceeding value Business Acquisition, Breach Of Contract, Damages Incurred Business Acquisition, Breach Of Contract, Damages Incurred Settlement amount Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability (Gain) loss on disputed mophie purchase price Gain (Loss) On Disputed Acquisition Purchase Price The aggregate net gain (loss) on disputed acquisition purchase price. US operations Income (Loss) from Continuing Operations before Income Taxes, Domestic Foreign operations Income (Loss) from Continuing Operations before Income Taxes, Foreign Income (loss) before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest SEGMENT REPORTING Segment Reporting Disclosure [Text Block] Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Trade receivables (gross contractual receivables of $12,914) Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Inventories Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory Inventories Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory, Gross Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory, Gross Inventory step-up Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Inventory Step Up The amount of inventory set up recognized as of the acquisition date. Prepaid expenses and other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets Prepaid expenses Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Prepaid Expense Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date. Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Income tax receivable Business Acquisition Purchase Price Allocation Current Assets Income Tax Receivable The amount of acquisition cost of a business combination allocated to income tax receivable. Deferred tax assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets, Current Property and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Land held for sale Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Land Amortizable identifiable intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets Goodwill Accounts payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable Income tax payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Accrued liabilities Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Accrued Liabilities Amount of accrued liabilities within one year or within the normal operating cycle, if longer, assumed at the acquisition date. Deferred revenue Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue Sales returns liability Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Sales Returns Liability Current Business combination recognized Identifiable assets acquired and liabilities assumed sales returns liability current. Deferred tax liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities, Current Other noncurrent liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other Total Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net Business Acquisitions [Parenthetical] [Abstract] Business Acquisitions [Parenthetical] [Abstract] Business Acquisitions [Parenthetical] [Abstract] Gross contractual receivables Business Combination, Acquired Receivables, Gross Contractual Amount INVENTORIES Inventory Disclosure [Text Block] Sales Return and Warranty Liability [Roll Forward] Sales Return and Warranty Liability [Roll Forward] Sales Return and Warranty Liability [Roll Forward] Balance at beginning of year Customer Refund Liability, Current Additions charged to sales Additions Charged To Sales Represents additions charged to sales. Assumed in acquisition of mophie Sales Return And Warranty Liability Assumed In Acquisition Sales return and warranty liability assumed in acquisition. Sales returns & warranty claims charged against reserve Sales Returns And Warranty Claims Charged Against Reserve Represents sales returns and warranty claims charged against reserve. Foreign currency translation loss Sales Returns, Warranty, and Other Credits, Foreign Currency Translation Loss. Sales Returns, Warranty, and Other Credits, Foreign Currency Translation Loss. Balance at ending of year Schedule of restricted stock activity Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table] Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table] Business Acquisition, Contingent Consideration [Line Items] Business Acquisition, Contingent Consideration [Line Items] Contingent payments Cash collected from duty recoveries Business Combination, Contingent Consideration Arrangements, Proceeds from Duty Recoveries Business Combination, Contingent Consideration Arrangements, Proceeds from Duty Recoveries Concentration Risk [Table] Concentration Risk [Table] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Sales revenue Sales Revenue, Goods, Net [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] United States UNITED STATES Europe Europe [Member] Other Other Countries [Member] A second specified group of foreign countries about which segment information is provided by the entity. Concentration Risk [Line Items] Concentration Risk [Line Items] Percentage of sales Concentration Risk, Percentage Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Weighted average shares outstanding: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Dilutive effect of stock options, restricted stock, and warrants (in shares) Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Earnings (loss) per share: Earnings Per Share [Abstract] Basic (in usd per share) Earnings Per Share, Basic Dilutive (in usd per share) Earnings Per Share, Diluted Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Accounts Receivable Accounts Receivable [Member] Sales Revenue, Net Sales Revenue, Net [Member] Customer [Axis] Customer [Axis] Customer [Domain] Customer [Domain] Superior Customer [Member] Best Buy Customer One [Member] It represents the customer that accounts for 10 percent or more of the entity's revenues. GENCO Customer Two [Member] It represents the customer that accounts for 10 percent or more of the entity's revenues. Concentration Risk [Line Items] Concentration risk percentage Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Note Receivable Collateralized By Stock Notes Receivable Collateralized By Stock [Member] Notes Receivable Collateralized By Stock [Member] Treasury Stock Treasury Stock [Member] Retained Earnings Retained Earnings [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balances Stockholders' Equity Attributable to Parent Balances (in shares) Shares, Outstanding Other comprehensive income Other Comprehensive Income (Loss), Net of Tax Purchase of shares of treasury stock Treasury Stock, Value, Acquired, Cost Method Foreclosure of 80 shares of stock collateralizing note receivable Foreclosure Shares Of Stock Collateralizing Note Receivable Foreclosure of 80 shares of stock collateralizing note receivable. Option exercises Stock Issued During Period, Value, Stock Options Exercised Option exercises (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Warrant exercises Stock Issued During Period Value Warrants Exercised Value of stock issued as a result of the exercise of warrants. Warrant exercises (in shares) Stock Issued During Period Shares Warrants Exercised Represents the number of shares issued as a result of the exercise of warrants. Restricted stock release Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Restricted stock release (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Consideration for acquisition of patent Stock Issued During Period Value Patent Acquisition This element represents Stock Issued During Period Value Patent Acquisition. Consideration for acquisition of patent (in shares) Stock Issued During Period Shares Patent Acquisitions Number of shares of stock issued during the period as part of a transaction to acquire patents. Employee stock purchase plan release Stock Issued During Period, Value, Employee Stock Purchase Plan Employee stock purchase plan release (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Stock-based compensation expense Stock Issued During Period, Value, Share-based Compensation, Gross Payment of withholding taxes on restricted stock units Adjustments To Additional Paid In Capital Share Based Compensation Witholding Of Restricted Stock Units Amount of equity-based compensation, related to witholding restricted stock units or restricted stock awards, recognized as expense or an asset, if compensation is capitalized Excess tax benefit (shortfall) related to share-based payments Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Balances Balances (in shares) COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Property, Plant and Equipment [Abstract] PROPERTY AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] Use of estimates Use of Estimates, Policy [Policy Text Block] Principles of consolidation Consolidation, Policy [Policy Text Block] Cash equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Fair value measurements Fair Value Measurement, Policy [Policy Text Block] Accounts receivable Trade and Other Accounts Receivable, Policy [Policy Text Block] Inventories Inventory, Policy [Policy Text Block] Property and equipment Property, Plant and Equipment, Policy [Policy Text Block] Goodwill Goodwill and Intangible Assets, Policy [Policy Text Block] Intangibles assets Intangible Assets, Finite-Lived, Policy [Policy Text Block] Impairment of long-lived assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Contingencies Commitments and Contingencies, Policy [Policy Text Block] Revenue recognition Revenue Recognition, Policy [Policy Text Block] Allowance for sales returns, warranty, and other credits Standard Product Warranty, Policy [Policy Text Block] Income taxes Income Tax, Policy [Policy Text Block] Stock-based compensation Compensation Related Costs, Policy [Policy Text Block] Advertising and marketing Advertising And Marketing [Policy Text Block] Represents the entire policy about advertising & marketing. Foreign currency translation and transactions Foreign Currency Transactions and Translations Policy [Policy Text Block] Earnings (loss) per share Earnings Per Share, Policy [Policy Text Block] Business combinations Business Combinations Policy [Policy Text Block] Recent accounting pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Schedule of changes in goodwill Schedule of Goodwill [Table Text Block] Schedule of long-lived intangibles Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of estimated future amortization expense for long-lived intangibles Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] INCOME TAXES Income Tax Disclosure [Text Block] ACQUISITION OF MOPHIE INC. Business Combination Disclosure [Text Block] Net sales Revenue, Net Income (loss) from operations Operating Income (Loss) Net income (loss) Net Income (Loss) Attributable to Parent Weighted average common shares: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Debt Disclosure [Abstract] Scedule of contractual future payments under the credit and security agreement Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block] Organization and summary of significant accounting policies (Textual) Organization And Summary Of Significant Accounting Policies Textual [Abstract] Amounts receivable from credit card processors Credit Card Receivables Percentage of recognized income tax positions Tax Benefits Recognized Provided Percentage Of Likeli Hood Of Realization More Than Represents the tax benefits recognized provided percentage of likelihood of realization is more than during the period. Advertising expense Marketing and Advertising Expense Gains (losses) from foreign currency transactions Foreign Currency Transaction Gain (Loss), Realized Antidilutive securities excluded from calculation of diluted earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 2018 Operating Leases, Future Minimum Payments Due, Next Twelve Months 2019 Operating Leases, Future Minimum Payments, Due in Two Years 2020 Operating Leases, Future Minimum Payments, Due in Three Years 2021 Operating Leases, Future Minimum Payments, Due in Four Years 2022 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due DEBT AND LETTERS OF CREDIT Debt Disclosure [Text Block] ASSETS Assets [Abstract] Current assets Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Accounts receivable, net of allowances of $734 and $824 Accounts Receivable, Net, Current Inventories Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Income tax receivable Income Taxes Receivable, Current Total current assets Assets, Current Property and equipment, net of accumulated depreciation of $12,540 and $18,371 Property, Plant and Equipment, Net Intangible assets, net of accumulated amortization of $66,639 and $55,298 Intangible Assets, Net (Excluding Goodwill) Deferred income tax assets Deferred Income Tax Assets, Net Other assets Other Assets, Noncurrent Total assets Assets LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Current liabilities Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Income tax payable Taxes Payable, Current Accrued liabilities Accrued Liabilities, Current Sales returns liability Accrued wages and wage related expenses Employee-related Liabilities, Current Deferred revenue Deferred Revenue, Current Line of credit Line of Credit, Current Current portion of long-term debt, net of deferred loan costs of $141 and $65 Long-term Debt, Current Maturities Total current liabilities Liabilities, Current Non-current portion of long-term debt, net of deferred loan costs of $0 and $141 Long-term Debt, Excluding Current Maturities Total liabilities Liabilities Stockholders' equity Stockholders' Equity Attributable to Parent [Abstract] Common stock, $0.001 par value; 100,000 shares authorized; 34,104 and 33,840 shares issued Common Stock, Value, Outstanding Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Treasury stock, 6,065 and 5,831 common shares at cost Treasury Stock, Value Retained earnings Retained Earnings (Accumulated Deficit) Total stockholders' equity Total liabilities and stockholders' equity Liabilities and Equity Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Line of Credit Line of Credit [Member] Term Loan Term Loan [Member] Term loan. Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Credit and Security Agreement Security Agreement [Member] Security Agreement. Debt Instrument [Line Items] Debt Instrument [Line Items] 2018 Contractual Obligation, Due in Next Fiscal Year 2019 Contractual Obligation, Due in Second Year 2020 Contractual Obligation, Due in Third Year Total Contractual Obligation Statement of Comprehensive Income [Abstract] Other comprehensive gain (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Foreign currency translation gain (loss) Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Total other comprehensive income (loss) Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Fair Value Disclosures [Abstract] FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2007 Plan Incentive Plan Two Thousand Seven [Member] 2013 Plan Equity Incentive Award Plan Two Thousand Thirteen [Member] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted stock Restricted Stock [Member] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Selling, General and Administrative Expenses Selling, General and Administrative Expenses [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Stock Options Warrants and Restricted Stock (Textual) Stock Options Warrants And Restricted Stock Textual [Abstract] Number of shares available for grant (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Issuance of common stock to directors, employees, consultants and advisors (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Term of the plan Share Based Compensation Arrangement By Share Based Payment Award Period Of Plan Represents period of plan. Total unrecognized compensation cost related to nonvested restricted stock awards granted Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Weighted average period for recognition Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Equity-based compensation expense Allocated Share-based Compensation Expense Net tax benefit recognized on equity-based compensation expense Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Amount of tax benefit realized from restricted stock Tax Benefit From Vested Restricted Stock Tax benefits realized from the vested restricted stock. Reduction to additional paid-in capital Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition Restricted Stock [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Outstanding at December 31, 2016 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Outstanding at December 31, 2017 Weighted-Average Grant Date Fair Value (Per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Outstanding at December 31, 2016 (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Outstanding at December 31, 2017 (in usd per share) Net sales Business Acquisition, Pro Forma Revenue Net loss Business Acquisition, Pro Forma Net Income (Loss) Basic loss per share (in usd per share) Business Acquisition, Pro Forma Earnings Per Share, Basic Diluted loss per share (in usd per share) Business Acquisition, Pro Forma Earnings Per Share, Diluted International Locations International Locations [Member] Concentrations (Textual) Concentration Textual [Abstract] Number of customers Number Of Customer Represents the number of customers. Net assets located overseas Net Assets Additional negative working capital deficit Total purchase price Income Statement [Abstract] Cost of sales Cost of Goods Sold Gross profit Gross Profit Operating expenses: Operating Expenses [Abstract] Advertising and marketing Selling, general and administrative Selling, General and Administrative Expense (Gain) loss on disputed mophie purchase price Impairment of intangible asset Impairment of Intangible Assets, Finite-lived Amortization of long-lived intangibles Amortization of Intangible Assets Total operating expenses Operating Expenses Income (loss) from operations Other income (expense): Nonoperating Income (Expense) [Abstract] Interest expense Interest Expense Other income (expense) Other Nonoperating Income (Expense) Total other expense Nonoperating Income (Expense) Income tax (provision) benefit Net income (loss) Earnings (loss) per share attributable to stockholders: Earnings Per Share, Basic and Diluted [Abstract] Basic earnings (loss) per share (in usd per share) Diluted earnings (loss) per share (in usd per share) Summary of income (loss) from continuing operations before taxes Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Summary of income tax benefit (provision) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of effective income tax rate reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Summary of deferred tax assets and liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of unrecognized tax benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Defined Contribution Plan (Textual) Defined Contribution Plan Textual [Abstract] Percentage of employees salary matches participant contributions Defined Contribution Plan, Employer Matching Contribution, Percent of Match Percentage of maximum employees salary Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Costs recognized related to employer Defined Contribution Plan, Cost Summary of purchase consideration Schedule Of Tangible Assets Acquired As Part Of Business Combination [Table Text Block] Tabular disclosure of characteristics and cost, by total and major class, of tangible assets acquired as part of a business combination. Schedule of identifiable assets acquired and liabilities assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Summary of assets acquired and liabilities assumed purchase price allocation Schedule of Business Acquisitions, by Acquisition [Table Text Block] Summary of intangible asset class and related preliminary weighted average amortization periods Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] Summary of unaudited pro-forma results of operations Business Acquisition, Pro Forma Information [Table Text Block] Tax at statutory rate (35%) Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount State tax, net of federal tax benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Non-deductible expense and other Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount Restricted stock units Effective Income Tax Rate Reconciliation, Restricted Stock Units Effective Income Tax Rate Reconciliation, Restricted Stock Units Foreign tax rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Domestic production activities deduction Effective Income Tax Rate Reconciliation, Deduction, Amount Return to provision adjustment Tax Adjustments, Settlements, and Unusual Provisions Reserve related to unrecognized tax benefits Income Tax Reconciliation Reserves Income Tax Reconciliation Reserves. Interest and penalties Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Effect of federal rate change Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act of 2017, Amount Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act of 2017, Amount Effect of state rate changes, net of federal tax benefit Effect Of State Rate Changes, Net Of Federal Tax Benefit Effect of state rate changes, net of federal tax benefit. Schedule of property and equipment, net Property, Plant and Equipment [Table Text Block] Schedule of future minimum rental payments required under the operating leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Schedule of Business Acquisitions by Acquisition, Contingent Consideration Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block] Statement of Cash Flows [Abstract] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Adjustments to reconcile net income (loss) to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Stock-based compensation Share-based Compensation Excess tax costs (benefits) related to share-based payments Excess Tax Benefit from Share-based Compensation, Operating Activities Depreciation and amortization Depreciation, Depletion and Amortization Loss on disposal of property and equipment Gain (Loss) on Disposition of Property Plant Equipment Reduction in reserve on note receivable upon foreclosure recovery Reduction Reserve Note Receivable Upon Foreclosure Recovery Reduction in reserve on note receivable upon foreclosure recovery. Deferred income taxes Increase (Decrease) in Deferred Income Taxes Amortization of deferred loan costs Amortization of Debt Issuance Costs (Gain) loss on disputed mophie purchase price Changes in operating assets and liabilities (net of amounts acquired): Increase (Decrease) in Operating Capital [Abstract] Accounts receivable, net Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Other assets Increase (Decrease) in Other Noncurrent Assets Accounts payable Increase (Decrease) in Accounts Payable Income taxes receivable (payable) Increase (Decrease) in Income Taxes Payable Accrued liabilities Increase (Decrease) in Accrued Liabilities Accrued wages and wage related expenses Increase (Decrease) in Employee Related Liabilities Deferred revenue Increase (Decrease) in Deferred Revenue Sales returns liability Increase (Decrease) In Sales Return Liability The increase (decrease) during the reporting period in the liability for sales returns. Other Increase (Decrease) in Other Operating Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Purchase of property and equipment (net of business acquired) Payments to Acquire Property, Plant, and Equipment Proceeds from disposal of equipment Proceeds from Sale of Property, Plant, and Equipment Purchase of mophie, net of cash acquired Payments to Acquire Other Productive Assets Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Payment of debt issuance costs Payments of Debt Issuance Costs Proceeds from revolving credit facility Proceeds from Lines of Credit Payments on revolving credit facility Repayments of Long-term Lines of Credit Proceeds from term loan facility Proceeds from Notes Payable Payments on term loan facility Repayments of Notes Payable Purchase of treasury stock Payment of withholdings tax on restricted stock units Payments Related to Tax Withholding for Share-based Compensation Proceeds from exercise of warrants and options Proceeds From Exercise Of Warrants and Options The cash inflow associated with exercise of warrants and options. Excess tax costs (benefits) related to share-based payments Excess Tax Benefit from Share-based Compensation, Financing Activities Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Effect of foreign currency exchange rates on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations Net increase (decrease) in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents at beginning of the period Cash and cash equivalents at end of the period Supplemental disclosure of cash flow information Supplemental Cash Flow Information [Abstract] Cash paid during the period for interest Interest Paid Cash paid (refunded) during the period for taxes, net Income Taxes Paid, Net Supplemental schedule of noncash investing and financing activities Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Purchase of fixed assets financed through accounts payable Noncash or Part Noncash Acquisition, Payables Assumed Purchase of mophie financed through accounts payable Purchase Assets Through Contingent Payments Purchase of mophie financed through contingent payments. Purchase of patent or intangible assets Noncash Or Part Noncash Acquisition Tenant Improvement Allowance Assumed The amount of tenant improvement allowance that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. Foreclosure on real property Foreclosure On Real Property Served As Collateral To Note Receivable It represents foreclosure on real property served as collateral to the note receivable which recorded as recorded as a component of other noncurrent assets in the condensed consolidated balance sheet. Foreclosure on common stock Foreclosure On Common Stock Served As Collateral To Note Receivable It represents foreclosure on common stock served as collateral to the note receivable which recorded as recorded as a component of other noncurrent assets in the condensed consolidated balance sheet. Issued shares of common stock with a fair value Noncash or Part Noncash Acquisition, Noncash Financial or Equity Instrument Consideration, Shares Issued Fair value of intangible assets acquired Noncash or Part Noncash Acquisition, Intangible Assets Acquired Line of Credit Facility [Table] Line of Credit Facility [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Scenario, Forecast Scenario, Forecast [Member] Letter of Credit Letter of Credit [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Base Rate Base Rate [Member] London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Maximum Maximum [Member] Minimum Minimum [Member] Security Agreement, Balance Accruing At 3.00% Security Agreement, Balance Accruing At 3.00% [Member] Security Agreement, Balance Accruing At 3.00% [Member] Security Agreement, Balance Accruing At 5.00% Security Agreement, Balance Accruing At 5.00% [Member] Security Agreement, Balance Accruing At 5.00% [Member] Line of Credit Facility and Term Loan [Line Items] Line of Credit Facility [Line Items] Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Debt instrument, term Debt Instrument, Term Interest rate, stated percentage Debt Instrument, Basis Spread on Variable Rate Line of credit fee percentage Line of Credit Facility, Commitment Fee Percentage Fronting fee Line Of Credit Facility, Fronting Fee, Percentage Line Of Credit Facility, Fronting Fee, Percentage Line of credit facility principal payment Line of Credit Facility, Periodic Payment Leverage ratio Supplementary Leverage Ratio Incurred and capitalized direct cost Cost related to line of credit Line of Credit Facility, Annual Principal Payment Cost related to long-term debt Interest Expense, Other Long-term Debt Amortization of capitalization costs Line of credit facility, outstanding balance Long-term Line of Credit Debt covenants, maximum other loans allowable Debt Instrument, Covenants, Maximum Other Loans Allowable Debt Instrument, Covenants, Maximum Other Loans Allowable Seasonal borrowing base Line of Credit Facility, Seasonal Borrowing Base Line of Credit Facility, Seasonal Borrowing Base Amendment and arrangement fees Line of Credit Facility, Collateral Fees, Amount Letters of credit outstanding amount Letters of Credit Outstanding, Amount Term loan, interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Line of credit facility, commitment fee amount Line of Credit Facility, Commitment Fee Amount Increase in accrued interest Line of Credit Facility, Increase, Accrued Interest Weighted average interest rate on all outstanding borrowings Debt, Weighted Average Interest Rate Effective interest rate Debt Instrument, Interest Rate, Effective Percentage Mandatory prepayment portion of term loans percentage Mandatory Prepayment Portion Of Term Loans Percentage Mandatory prepayment portion of term loans percentage. Prepayment amount Debt Instrument, Excess Cash Flow Prepayment Debt Instrument, Excess Cash Flow Prepayment 2018 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Five Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Total Operating Expense Operating Expense [Member] Cost of Sales Cost of Sales [Member] Canceled Patent Canceled Patent [Member] Canceled Patent [Member] Finite-Lived Intangible Assets [Line Items] Increase in goodwill Goodwill, impairment Goodwill, Impairment Loss Impairments on cancelled patent Write-off of accumulated amortization on intangible assets Finite-Lived Intangible Assets, Accumulated Amortization Written Off Finite-Lived Intangible Assets, Accumulated Amortization Written Off Net carrying value Impairment of intangible asset Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Computer equipment and software Computer Equipment [Member] Equipment and molds Equipment [Member] Furniture and fixtures Furniture and Fixtures [Member] Automobiles Automobiles [Member] Building and improvements Building and Building Improvements [Member] Land Land [Member] Leasehold improvements Leasehold Improvements [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Property, plant and equipment, gross Property, Plant and Equipment, Gross Less accumulated depreciation and amortization Property and equipment, net Useful Lives Property, Plant and Equipment, Useful Life Schedules of concentration of accounts receivable and sales Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Schedule of percentage of sales by geographic region Schedules Of Concentration Risk Of Sales By Geographic Region [Table Text Block] Tabular disclosure of the nature of a concentration risk of sales by geographic region. Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Unrecognized tax benefits, as of January 1 Unrecognized tax benefits assumed in acquisition Unrecognized Tax Benefits, Increase Resulting from Acquisition Gross increases (decreases) – tax positions in current period Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Gross increases (decreases) – prior year tax positions Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Gross increases (decreases) – lapse of statute Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Total benefit