Schedule of unrecognized tax benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Stock-based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Mophie Mophie Inc Mophie Inc [Member] Mophie Inc [Member]. Goodwill, impairment Goodwill, Impairment Loss Increase due to acquisitions Increase in goodwill Goodwill, Acquired During Period Contingencies Commitments and Contingencies, Policy [Policy Text Block] Foreign tax rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Inventory Disclosure [Abstract] Range [Domain] Range [Domain] TREASURY STOCK Treasury Stock [Text Block] Right of return assets, which are included in prepaid expenses and other current assets Contract with Customer, Right to Recover Product, Current Common stock, par value (in usd per share) Common Stock, Par or Stated Value Per Share Deferred income taxes Increase (Decrease) in Deferred Income Taxes ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Federal net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards, Foreign Income Statement Location [Domain] Income Statement Location [Domain] Deferred loan costs, current Deferred Costs, Current Accounting Policies [Abstract] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Sales Return and Warranty Liability [Roll Forward] Sales Return and Warranty Liability [Roll Forward] Sales Return and Warranty Liability [Roll Forward] Computer equipment and software Computer Equipment [Member] Purchase of property and equipment (net of business acquired) Payments to Acquire Property, Plant, and Equipment Operating expenses: Operating Expenses [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Stock-based compensation Compensation Related Costs, Policy [Policy Text Block] Deferred tax assets: Deferred Tax Assets, Gross [Abstract] Finished goods Inventory, Finished Goods, Gross Prepaid expenses and other current assets Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Foreign currency translation (loss) gain Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Best Buy Customer One [Member] It represents the customer that accounts for 10 percent or more of the entity's revenues. Additional Paid-in Capital Additional Paid-in Capital [Member] Additions charged to sales Additions Charged To Sales Represents additions charged to sales. Depreciation Depreciation Indirect channel Sales Channel, Through Intermediary [Member] Line of Credit Facility [Table] Line of Credit Facility [Table] Prepaids and other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets Balance at beginning of year Balance at end of year Standard Product Warranty Accrual Income tax receivable Income Taxes Receivable, Current Base Rate Base Rate [Member] Income taxes Income Tax, Policy [Policy Text Block] Purchase of treasury stock Purchase of treasury stock Payments for Repurchase of Common Stock Concentration Risk Type [Axis] Concentration Risk Type [Axis] Advertising and marketing Advertising And Marketing [Policy Text Block] Represents the entire policy about advertising & marketing. Goodwill Beginning Balance Ending Balance Goodwill Warranty liabilities, which are included in sales return liability Standard Product Warranty Accrual, Current Concentrations (Textual) Concentration Textual [Abstract] Percentage of maximum employees salary Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Modification of debt that resulted in payment of existing term loan balance Payments of Debt Restructuring Costs Rental payment of leases Operating Leases, Rent Expense Property and equipment, net of accumulated depreciation of $11,844 and $12,540 Property and equipment, net Property, Plant and Equipment, Net Debt Instrument [Axis] Debt Instrument [Axis] 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 Amendment and arrangement fees Line of Credit Facility, Collateral Fees, Amount 2019 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months Schedule of New Accounting Pronouncements and Changes in Accounting Principles Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Statement [Table] Statement [Table] Additions Standard Product Warranty Accrual, Increase for Warranties Issued Reserve related to unrecognized tax benefits Income Tax Reconciliation Reserves Income Tax Reconciliation Reserves. U.S. operations Income (Loss) from Continuing Operations before Income Taxes, Domestic Weighted-Average Interest Rate Debt, Weighted Average Interest Rate Term of the plan Share Based Compensation Arrangement By Share Based Payment Award Period Of Plan Represents period of plan. Changes in operating assets and liabilities (net of amounts acquired): Increase (Decrease) in Operating Capital [Abstract] Number of shares available for grant (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Gross increases (decreases) – lapse of statute Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Retained earnings Retained Earnings (Accumulated Deficit) Retained earnings Retained Earnings (Accumulated Deficit) DEBT AND LINE OF CREDIT Debt Disclosure [Text Block] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Accounts receivable Trade and Other Accounts Receivable, Policy [Policy Text Block] Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Adjustments to reconcile net income (loss) to net cash provided by operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] 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. Other income (expense) Other Nonoperating Income (Expense) ACQUISITIONS Business Combination Disclosure [Text Block] Dilutive effect of stock options, restricted stock, and warrants (in shares) Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Employee stock purchase plan release Stock Issued During Period, Value, Employee Stock Purchase Plan Income Taxes Textual [Abstract] Income Taxes Textual [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Net carrying value Net Carrying Amount Total Finite-Lived Intangible Assets, Net Customer [Domain] Customer [Domain] Entity Public Float Entity Public Float Stock Options Warrants And Restricted Stock Textual [Abstract] Stock Options Warrants And Restricted Stock Textual [Abstract] GILTI Effective Income Tax Rate Reconciliation, Global Intangible Low Income Tax Income Effective Income Tax Rate Reconciliation, Global Intangible Low Income Tax Income HzO investment Deferred Tax Assets, Investments Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Stock-based compensation expense related to restricted stock awards Allocated Share-based Compensation Expense Product Concentration Risk Product Concentration Risk [Member] 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Two Automobiles Automobiles [Member] 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 Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] ASSETS Assets [Abstract] Schedule of changes in goodwill Schedule of Goodwill [Table Text Block] Deferred revenue Deferred Tax Assets, Deferred Income Keyboards Keyboards [Member] Keyboards Range [Axis] Range [Axis] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Cash and cash equivalents Cash and cash equivalents at beginning of the period Cash and cash equivalents at end of the period Cash and Cash Equivalents, at Carrying Value Accounts payable Increase (Decrease) in Accounts Payable Deferred income tax assets Deferred Income Tax Assets, Net Total gross deferred tax assets Deferred Tax Assets, Gross Weighted Average Amortization Period Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Pro forma net sales Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Business Acquisition [Axis] Business Acquisition [Axis] Accrued liabilities Increase (Decrease) in Accrued Liabilities Document Fiscal Year Focus Document Fiscal Year Focus Nonrecurring Adjustment [Domain] Nonrecurring Adjustment [Domain] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Stockholders' equity Stockholders' Equity Attributable to Parent [Abstract] Operating Expense Operating Expense [Member] Title of Individual [Axis] Title of Individual [Axis] Scenario [Axis] Scenario [Axis] Cash paid during the period for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Subsequent Event Type [Domain] Subsequent Event Type [Domain] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Impairments on cancelled patent Impairments Impairment of Intangible Assets, Finite-Lived, Gross Impairment of Intangible Assets, Finite-Lived, Gross HALO HALO [Member] HALO FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Accounts payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable Foreign Current Foreign Tax Expense (Benefit) LossOnDeferredDebtIssuanceCostsWithDebtModification LossOnDeferredDebtIssuanceCostsWithDebtModification LossOnDeferredDebtIssuanceCostsWithDebtModification Other assets Other Assets, Noncurrent Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Purchase price Cash consideration Business Combination, Consideration Transferred Entity Current Reporting Status Entity Current Reporting Status Entity Emerging Growth Company Entity Emerging Growth Company Retained Earnings Retained Earnings [Member] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Sales returns liability Increase (Decrease) In Sales Return Liability The increase (decrease) during the reporting period in the liability for sales returns. Customer relationships Customer Relationships [Member] Goodwill Goodwill and Intangible Assets, Policy [Policy Text Block] Diluted earnings (loss) per share (in usd per share) Dilutive (in usd per share) Earnings Per Share, Diluted Stock-based compensation expense Stock Issued During Period, Value, Share-based Compensation, Gross Business Acquisition [Line Items] Business Acquisition [Line Items] Website Sales Channel Directly to Consumer Website [Member] Sales Channel Directly to Consumer Website Purchase of mophie financed through contingent payments Purchase Assets Through Contingent Payments Purchase of mophie financed through contingent payments. Earnout Consideration Earnout Consideration [Member] Earnout Consideration Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Excess tax benefit (shortfall) related to share-based payments Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation Net sales target between $60,000 and $90,000 Earnout Consideration Target One [Member] Earnout Consideration Target One Inventories Total inventories Inventory, Net Earnout period for indemnification liability BusinessCombinationContingentConsiderationPeriod BusinessCombinationContingentConsiderationPeriod Net (decrease) increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Antidilutive securities excluded from calculation of diluted earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Balances after cumulative effect of accounting change Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance Statement of Financial Position [Abstract] Business Combinations [Abstract] 2019 Operating Leases, Future Minimum Payments Due, Next Twelve Months Write-off of accumulated amortization on intangible assets Finite-Lived Intangible Assets, Accumulated Amortization Written Off Finite-Lived Intangible Assets, Accumulated Amortization Written Off Patents and technology Patented Technology [Member] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Axis] Cash held by foreign entities considered permanently reinvested Undistributed Earnings of Foreign Subsidiaries Effect of foreign currency exchange rates on cash and cash equivalents Effect of Exchange Rate on Cash and Cash Equivalents, Continuing Operations Payments on revolving credit facility Repayments of Long-term Lines of Credit Schedule of restricted stock activity Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Contract with Customer, Sales Channel [Domain] Contract with Customer, Sales Channel [Domain] 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 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] Land Land [Member] 2023 Operating Leases, Future Minimum Payments, Due in Five Years Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Franchisees Sales Channel Directly to Consumer Franchisees [Member] Sales Channel Directly to Consumer Franchisees Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Property and equipment Property, Plant and Equipment, Policy [Policy Text Block] Line of Credit Line of Credit [Member] Debt Disclosure [Abstract] Write off of deferred debt issuance cost Write off of Deferred Debt Issuance Cost Net Sales target exceeding $90,000 Earnout Consideration Target Two [Member] Earnout Consideration Target Two 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. Subsequent Event Type [Axis] Subsequent Event Type [Axis] PROPERTY AND EQUIPMENT Property, Plant and Equipment Disclosure [Text Block] Net sales target for earnout consideration BusinessCombinationContingentConsiderationArrangementstargetnetsales BusinessCombinationContingentConsiderationArrangementstargetnetsales Non-deductible expense and other Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount Risks and Uncertainties [Abstract] Recent accounting pronouncements New Accounting Pronouncements, Policy [Policy Text Block] State Deferred State and Local Income Tax Expense (Benefit) Purchase of mophie, BRAVEN, and Gear4 Payments to Acquire Other Productive Assets Number of customers Number Of Customer Represents the number of customers. Property and equipment Deferred Tax Assets, Property, Plant and Equipment Sales Revenue, Net Sales Revenue, Net [Member] Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Foreign tax credit Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount Fair value measurements Fair Value Measurement, Policy [Policy Text Block] Interest rate, stated percentage Debt Instrument, Basis Spread on Variable Rate Initial Application Period Cumulative Effect Transition [Domain] Initial Application Period Cumulative Effect Transition [Domain] Tax associated with undistributed earnings Tax Cuts and Jobs Act of 2017, Measurement Period Adjustment, Income Tax Expense (Benefit) Tax Cuts and Jobs Act of 2017, Measurement Period Adjustment, Income Tax Expense (Benefit) Payment of withholdings tax on restricted stock units Payments Related to Tax Withholding for Share-based Compensation State tax, net of federal tax benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Total operating expenses Operating Expenses Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Current portion of total debt outstanding, net of deferred loan costs Long-term Debt, Current Maturities Gross increases – prior year tax positions Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Costs recognized related to employer Defined Contribution Plan, Cost Backlog Order or Production Backlog [Member] Schedule of property and equipment, net Property, Plant and Equipment [Table Text Block] Net operating loss carryforward Deferred Tax Assets, Operating Loss Carryforwards Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name [Domain] Total Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Stock-based compensation Share-based Compensation InvisibleShield Glass Products InvisibleShield Glass Products [Member] InvisibleShield Glass Products Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Other comprehensive gain (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Cash consideration Payments to Acquire Businesses, Gross Adjustments Difference between Revenue Guidance in Effect before and after Topic 606 [Member] Impairment of long-lived assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Contract with Customer, Sales Channel [Axis] Contract with Customer, Sales Channel [Axis] Geographical [Axis] Geographical [Axis] Effective interest rate Debt Instrument, Interest Rate, Effective Percentage Acquisitions Finite-lived Intangible Assets Acquired HzO, Inc Variable Interest Entity, Primary Beneficiary [Member] Recognized assets acquired and liabilities assumed, net Total Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net (Gain) loss on disputed mophie purchase price (Gain) loss on disputed mophie purchase price Gain (Loss) On Disputed Acquisition Purchase Price The aggregate net gain (loss) on disputed acquisition purchase price. Payments on term loan facility Repayments of Notes Payable 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] Accounts receivable, net Increase (Decrease) in Accounts Receivable Tax benefit recognized on stock-based compensation expense Employee Service Share-based Compensation, Tax Benefit from Compensation Expense 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] Useful Lives Property, Plant and Equipment, Useful Life Increase in accrued interest Line of Credit Facility, Increase, Accrued Interest Valuation allowance Deferred tax assets, valuation allowance Deferred Tax Assets, Valuation Allowance Entity Filer Category Entity Filer Category Entity Voluntary Filers Entity Voluntary Filers Restatement [Domain] Restatement [Domain] Total Operating Leases, Future Minimum Payments Due Common stock value Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Equity [Abstract] Equity [Abstract] Taxes payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities 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) Quarterly financial information Quarterly Financial Information [Table Text Block] Defined Contribution Plan (Textual) Defined Contribution Plan Textual [Abstract] Term Loan Term Loan [Member] Term loan. Long-term Debt Long-term Debt Income Tax Disclosure [Abstract] Impairment of intangible asset Impairment of Intangible Assets, Finite-lived Term Loan, 2016 Term Loan, 2016 [Member] Term Loan, 2016 Cash flows from operating activities: Cash and Cash Equivalents, Period Increase (Decrease) [Abstract] BRAVEN BRAVEN [Member] BRAVEN Fair Value Adjustment to Inventory Fair Value Adjustment to Inventory [Member] Subsequent Event [Table] Subsequent Event [Table] Statement [Line Items] Statement [Line Items] Balances Without Adoption of Topic 606 Calculated under Revenue Guidance in Effect before Topic 606 [Member] Schedule of identifiable assets acquired and liabilities assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Schedule of Treasury Stock Class of Treasury Stock [Table Text Block] Entity Registrant Name Entity Registrant Name Supplemental schedule of noncash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Number of repurchase of shares authorized by board of directors Stock Repurchase Program, Authorized Amount Furniture and fixtures Furniture and Fixtures [Member] Treasury Stock Treasury Stock [Member] International Locations International Locations [Member] Weighted average shares outstanding: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Employee stock purchase plan release (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Screen Protection Sales Revenue, Net Screen Protection Sales Revenue, Net [Member] Screen Protection Sales Revenue, Net Amendment Flag Amendment Flag Aquisitions (Textual) Business Acquisition [Abstract] Acquisition of Mophie (Textual) ISOD Film Blanks ISOD Film Blanks [Member] ISOD Film Blanks Gross increases (decreases) – tax positions in current period Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Maximum payment under earnout consideration Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High Deferred (provision) benefit: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Schedule of concentration risk by accounts receivable ScheduleOfConcentrationRiskByAccountsReceivableTableTextBlock [Table Text Block] ScheduleOfConcentrationRiskByAccountsReceivableTableTextBlock Accounts receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Entity Central Index Key Entity Central Index Key Schedules of concentration of accounts receivable and sales Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Schedule of long-lived intangibles Schedule of Finite-Lived Intangible Assets [Table Text Block] Screen protection Screen Protection [Member] Screen Protection Loss on disposal of property and equipment Gain (Loss) on Disposition of Property Plant Equipment Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Line of credit Line of Credit, Current Purchase of property and equipment financed through accounts payable Noncash or Part Noncash Acquisition, Payables Assumed Tax contingency Effective Income Tax Rate Reconciliation, Tax Contingency, Foreign, Amount Common stock, shares authorized (in shares) Common Stock, Shares Authorized Summary of deferred tax assets and liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Refund liabilities, which are included in sales return liability Contract with Customer, Refund Liability, Current Product and Service [Domain] Product and Service [Domain] Type of Adoption [Domain] Type of Adoption [Domain] Remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Gross decreases - prior year tax positions Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Pro forma net loss before tax Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Allowance for sales returns, warranty, and other credits Standard Product Warranty, Policy [Policy Text Block] GOODWILL AND INTANGIBLE ASSETS Goodwill and Intangible Assets Disclosure [Text Block] Schedule of Long-term Debt Instruments Schedule of Long-term Debt Instruments [Table Text Block] Fair Value Disclosures [Abstract] Tax credit carryforward, valuation allowance Tax Credit Carryforward, Valuation Allowance INVENTORIES Inventory Disclosure [Text Block] Variable Rate [Domain] Variable Rate [Domain] Inventories Deferred Tax Assets, Inventory Entity Shell Company Entity Shell Company Cash equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Geographic Concentration Risk Geographic Concentration Risk [Member] Warrant exercises Stock Issued During Period Value Warrants Exercised Value of stock issued as a result of the exercise of warrants. Transaction costs Business Combination, Acquisition Related Costs 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. Total stockholders' equity Balances Balances Stockholders' Equity Attributable to Parent Business Acquisitions [Parenthetical] [Abstract] Business Acquisitions [Parenthetical] [Abstract] Business Acquisitions [Parenthetical] [Abstract] Gross Carrying Amount Finite-Lived Intangible Assets, Gross Plan Name [Axis] Plan Name [Axis] Revenue Revenue from Contract with Customer [Text Block] Equity Component [Domain] Equity Component [Domain] Assumed in acquisition of mophie Assumed In Acquisition Assumed in acquisition. Property, plant and equipment, gross Property, Plant and Equipment, Gross Common Stock Common Stock [Member] Term loan, interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Property and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment GENCO Customer Two [Member] It represents the customer that accounts for 10 percent or more of the entity's revenues. Restatement Adjustment Restatement Adjustment [Member] Revenue recognition Revenue from Contract with Customer [Policy Text Block] Geographical [Domain] Geographical [Domain] Warranty claims charged Standard Product Warranty Accrual, Decrease for Payments Distribution Channel Concentration Risk Distribution Channel Concentration Risk [Member] Distribution Channel Concentration Risk Purchase of Gear4 through contingent payments and common stock Purchase Assets Through Contingent payments And Common Stock Purchase Assets Through Contingent payments And Common Stock Accounts payable Accounts Payable, Current Relationship to Entity [Domain] Relationship to Entity [Domain] Debt issuance costs, net Debt Issuance Costs, Net Other Other Intangible Assets [Member] Property, Plant and Equipment [Abstract] Current portion of long-term debt, net of deferred loan costs of $0 and $141 Other Long-term Debt Amortization of debt issuance cost Amortization of capitalization costs Amortization of Debt Issuance Costs and Discounts InvisibleShield Film products InvisibleShield Film products [Member] InvisibleShield Film products Customer [Axis] Customer [Axis] Current Fiscal Year End Date Current Fiscal Year End Date Treasury stock (in shares) Treasury Stock, Shares Assumed in acquisition Sales Return And Warranty Liability Assumed In Acquisition Sales return and warranty liability assumed in acquisition. Restricted stock Restricted Stock [Member] Equity Award [Domain] Equity Award [Domain] Return to provision adjustment Tax Adjustments, Settlements, and Unusual Provisions Proceeds from revolving credit facility Proceeds from Lines of Credit 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 Sales returns accrual Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Returns and Allowances Additional paid-in capital Additional Paid in Capital, Common Stock Inventories Inventory, Policy [Policy Text Block] Additions charged to expense Provision for Doubtful Accounts Accumulated depreciation on property and equipment Less accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Accrued wages and wage related expenses Increase (Decrease) in Employee Related Liabilities Gross contractual receivables Business Combination, Acquired Receivables, Gross Contractual Amount Foreign currency translation loss Sales Returns, Warranty, and Other Credits, Foreign Currency Translation Loss. Sales Returns, Warranty, and Other Credits, Foreign Currency Translation Loss. Proceeds from term loan facility Proceeds from Notes Payable Foreign currency translation gain Standard Product Warranty Accrual, Foreign Currency Translation Gain (Loss) Schedule of effective income tax rate reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Weighted Average Amortization Period Finite-Lived Intangible Asset, Useful Life RESTRICTED STOCK Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Foreign Deferred Foreign Income Tax Expense (Benefit) CONCENTRATIONS Concentration Risk Disclosure [Text Block] Capital loss carry-over Deferred Tax Assets, Capital Loss Carryforwards Interest and penalties Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense Income tax payable Taxes Payable, Current Power management Power Management [Member] Power Management Income Statement Location [Axis] Income Statement Location [Axis] Amounts receivable from credit card processors Credit Card Receivables Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Weighted average price per share of stock repurchase (in usd per share) Treasury Stock Acquired, Average Cost Per Share Nonrecurring Adjustment [Axis] Nonrecurring Adjustment [Axis] Foreign currency translation and transactions Foreign Currency Transactions and Translations Policy [Policy Text Block] Excess tax costs related to share-based payments Excess Tax Benefit from Share-based Compensation, Financing Activities Leasehold improvements Leasehold Improvements [Member] Income (loss) from operations Income (loss) from operations Operating Income (Loss) Lease liabilities Operating Lease, Liability Tax Credit Carryforward [Axis] Tax Credit Carryforward [Axis] Business combination, liabilities due Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities Commitments and Contingencies Disclosure [Abstract] Weighted average period for recognition Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 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. Allowances for doubtful accounts Balance at beginning of year Balance at end of year Allowance for Doubtful Accounts Receivable Line of credit fee percentage Line of Credit Facility, Commitment Fee Percentage Inventories Increase (Decrease) in Inventories Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Beginning balance (in shares) Ending balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Acquisition-related Costs Acquisition-related Costs [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Subsequent Event Subsequent Event [Member] Third Party Indemnification Liability Third Party Indemnification Liability [Member] Third Party Indemnification Liability Accrued wages and wage related expenses Employee-related Liabilities, Current Sales returns and warranty claims charged against reserve Sales Returns And Warranty Claims Charged Against Reserve Represents sales returns and warranty claims charged against reserve. 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. Net sales Business Acquisition, Pro Forma Revenue 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 future minimum rental payments required under the operating leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Income taxes (payable) receivable Increase (Decrease) in Income Taxes Payable 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Five Commitments and contingencies (Note 13) Commitments and Contingencies London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Statement of Stockholders' Equity [Abstract] Summary of income (loss) from continuing operations before taxes Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Federal Current Federal Tax Expense (Benefit) Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Total liabilities Liabilities 2021 Operating Leases, Future Minimum Payments, Due in Three Years 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. Allowance for Doubtful Accounts [Roll Forward] Allowance for Doubtful Accounts Receivable [Roll Forward] Foreign currency translation gain (loss) Allowance For Doubtful Accounts Receivable Foreign Currency Translation Loss Allowance for doubtful accounts receivable foreign currency translation loss. Credit And Security Agreement 2018 Credit And Security Agreement 2018 [Member] Credit And Security Agreement 2018 Trading Symbol Trading Symbol United States UNITED STATES Basic earnings (loss) per share (in usd per share) Basic (in usd per share) Earnings Per Share, Basic Fronting fee Line Of Credit Facility, Fronting Fee, Percentage Line Of Credit Facility, Fronting Fee, Percentage Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Document Period End Date Document Period End Date Raw materials Inventory, Raw Materials, Gross Quarterly Financial Information Disclosure [Abstract] Contract liabilities, which are included in accrued liabilities Contract with Customer, Liability Class of Treasury Stock [Table] Class of Treasury Stock [Table] Cash Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Schedule of Treasury Stock (Textual) Treasury Stock (Textual) [Abstract] Amortization of deferred loan costs Amortization of Debt Issuance Costs Cumulative effect of accounting change Cumulative Effect of New Accounting Principle in Period of Adoption Other liabilities Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other Europe Europe [Member] Topic 606 Accounting Standards Update 2014-09 [Member] Common stock, $0.001 par value; 100,000 shares authorized; 34,457 and 34,104 shares issued Common Stock, Value, Outstanding Total deferred tax assets Deferred Tax Assets, Net of Valuation Allowance Amortizable identifiable intangible assets Intangible Asset Class Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Cost of Sales Cost of Sales [Member] Accounts Receivable Accounts Receivable [Member] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] DEFINED CONTRIBUTION PLAN Defined Contribution Plan [Text Block] The entire disclosure for an entity's employee compensation and benefit plans, including defined contribution plan. 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