Revenue from Contract with Customer [Abstract] Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Accounting Policies [Abstract] Raw materials Inventory, Raw Materials, Gross Work-in-process Inventory, Work in Process, Gross Finished goods Inventory, Finished Goods, Gross Total Inventory Inventory, Net Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] Fixed Income Securities [Member] Fixed Income Securities [Member] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Due within one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Due between one and five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Due over 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Accumulated Gross Unrealized Gain, before Tax Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Market Value Investments, Fair Value Disclosure Income Tax Disclosure [Abstract] Reconciliation of the beginning and ending amount of unrecognized tax benefits Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] Beginning of year Unrecognized Tax Benefits Additions based on tax positions related to the current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Additions for tax positions in prior years Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Reductions for tax positions in prior years Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Reductions as a result of completed audit examinations Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Reductions 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Attributable to Parent [Member] Unrealized gains (losses) on derivatives Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Reclassification Out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Realized gain (loss) Debt and Equity Securities, Gain (Loss), Excluding Other-than-temporary Impairment Loss Provision for income taxes Income Tax Expense (Benefit) Total reclassifications for the period Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Assets: Components of Deferred Tax Assets [Abstract] Accruals not currently deductible Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals Stock based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Other Deferred Tax Assets, Other Total deferred income tax assets Deferred Tax Assets, Net of Valuation Allowance Liabilities: Components of Deferred Tax Liabilities [Abstract] Excess tax over book depreciation Deferred Tax Liabilities Deferred Expense Excess Tax Over Book Depreciation Deferred tax liabilities deferred expense excess tax over book depreciation. 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Allowance For Obsolete And Slow Moving Inventories Allowance For Obsolete And Slow Moving Inventories Minimum estimated useful life, in years Property, Plant and Equipment, Useful Life Depreciation expense Depreciation Advertising and promotional costs Marketing and Advertising Expense Repair and maintenance of plant and equipment Cost of Property Repairs and Maintenance Shares related to stock plans not included in diluted average common shares outstanding because their effect would be antidilutive Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Number of plans Share-based Compensation Arrangement by Share-based Payment Award, Number of Plans Share-based Compensation Arrangement by Share-based Payment Award, Number of Plans Net cash flows from operating activities Net Cash Provided by (Used in) Operating Activities Cumulative-effect adjustment New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification Expected right-of-use asset and right -of-use liability Expected Right-of-Use Asset and Right-of-Use Liability Expected Right-of-Use Asset and Right-of-Use Liability Income Statement [Abstract] NET SALES Revenue from Contract with Customer, Including Assessed Tax COST OF GOODS SOLD Cost of Goods and Services Sold Gross profit Gross Profit OPERATING EXPENSES: Operating Expenses [Abstract] Engineering, research and development Research and Development Expense Selling, general and administrative Selling, General and Administrative Expense Total operating expenses Operating Expenses Income from operations Operating Income (Loss) OTHER INCOME: Investment Income, Nonoperating [Abstract] Investment income Investment Income, Nonoperating Other, net Other Nonoperating Income (Expense) Total other income (expense) Nonoperating Income (Expense) Income before provision for income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest PROVISION 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Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Disclosure of Compensation Related Costs, Share-based Payments [Abstract] 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] Employee Stock Option Plan Employee Stock Option Plan [Member] Employee Stock Option Plan [Member] Non-Employee Director Stock Option Plan Non Employee Director Stock Option Plan [Member] Non-Employee Director Stock Option Plan [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Shares, Outstanding at Beginning of Year (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Shares, Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Shares, Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Shares, Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Shares, Outstanding at End of Year (in shares) Shares, Exercisable at End of Year (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Wtd. 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Price, Exercisable at End of Year (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Option expiration period, years Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Wtd. Avg. Remaining Contract Life, Exercisable at End of Year Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate Intrinsic Value, Exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Aggregate Intrinsic Value, Outstanding at End of Year Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate Intrinsic Value, Exercisable at End of Year Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Revenue Revenue from Contract with Customer [Text Block] Equity [Abstract] Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Statement of Comprehensive Income [Abstract] Net income Other comprehensive income (loss) before tax: Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent [Abstract] Foreign 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Stockholders' Equity Attributable to Parent ASU 2016-01 adoption impact Reclassification from Accumulated Other Comprehensive Income, Accounting Standards Update, Current Period, Net of Tax Reclassification from Accumulated Other Comprehensive Income, Accounting Standards Update, Current Period, Net of Tax Other comprehensive income (loss) before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Amounts reclassified from accumulated other comprehensive income Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Ending balance Accumulated other comprehensive income (loss), end of period Accumulated Other Comprehensive Income (Loss), Net of Tax Document And Entity Information [Abstract] Document and Entity Information [Abstract] Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Filer Category Document Type Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Entity Shell Company Entity Shell Company Amendment Flag Entity Common Stock, Shares Outstanding Entity Public Float Entity Current Reporting Status Entity Voluntary Filers Entity Well-known Seasoned Issuer Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Additional Paid-In Capital Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning balance (in shares) Issuance of common stock (in shares) Stock Issued During Period, Shares, New Issues Issuance of common stock Stock Issued During Period, Value, New Issues Repurchases of common stock (in shares) Stock Repurchased During Period, Shares Repurchases of common stock Stock Repurchased During Period, Value Stock-based compensation expense related to stock options, employee stock purchases and restricted stock Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Impact of ASU 2016-01 adoption Dividends declared Dividends, Common Stock, Cash Other comprehensive income Other Comprehensive Income (Loss), Net of Tax Ending balance (in shares) Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] U.S. UNITED STATES Germany GERMANY Japan JAPAN Other Other Countries [Member] Other Countries [Member] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Automotive Products Automotive Products [Member] Automotive Products [Member] Automotive Mirrors & Electronics Automotive Mirrors & Electronics [Member] Automotive Mirrors & Electronics [Member] HomeLink Modules HomeLink Modules [Member] HomeLink Modules [Member] Other Products (U.S.) Other Products [Member] Other Products [Member] Fire Protection Products Fire Protection Products [Member] Fire Protection Products [Member] Windows Products Windows Products [Member] Windows Products [Member] Dimmable Aircraft Windows Dimmable Aircraft Windows [Member] Dimmable Aircraft Windows [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Automotive Segment Automotive Segment [Member] Automotive Segment [Member] Other Other Segment [Member] Other Segment [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Revenues Payment terms Revenue from Contract with Customer, Payment Terms Revenue from Contract with Customer, Payment Terms Numerators: Numerators [Abstract] Numerators [Abstract] Numerator for both basic and diluted EPS, net income Denominators: Denominators [Abstract] Denominators [Abstract] Denominator for basic EPS, weighted-average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Potentially dilutive shares resulting from stock option plans (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment Denominator for diluted EPS (in shares) Weighted Average Number of Shares Outstanding, Diluted Currently payable: 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 Income Tax Expense (Benefit) Deferred income tax (benefit) expense: Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Primarily federal Deferred Federal Income Tax Expense (Benefit) Provision for income taxes Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Level 1 Fair Value, Inputs, Level 1 [Member] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Cash & Cash Equivalents Cash and Cash Equivalents, Fair Value Disclosure Short-Term Investments Short-term Investments, Fair Value Disclosure Short-term Investments, Fair Value Disclosure Long-Term Investments Long-term Investments, Fair Value Disclosure Long-term Investments, Fair Value Disclosure Summary Of Significant Accounting And Reporting Policies Significant Accounting Policies [Text Block] Statement of Cash Flows [Abstract] Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Gain on disposal of assets Gain on Disposition on Assets Gain on Disposition on Assets Loss on disposal of assets Loss on Disposition of Assets Loss on Disposition of Assets Gain on sale of investments Gain (Loss) on Sale of Investments Loss on sale of investments Loss on Sale of Investments Deferred income taxes Deferred Income Tax Expense (Benefit) Stock based compensation expense related to employee stock options, employee stock purchases and restricted stock Share-based Compensation Change in operating assets and liabilities: Increase (Decrease) in Operating Assets [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Prepaid expenses and other Increase (Decrease) in Prepaid Expense and Other Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued liabilities Increase (Decrease) in Accrued Liabilities Net cash flows from operating activities CASH FLOWS USED FOR INVESTING ACTIVITIES: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Activity in available-for-sale securities: Activity in Available-For-Sale Securities [Abstract] Activity in Available-For-Sale Securities [Abstract] Sales proceeds Proceeds from Sale of Debt Securities, Available-for-sale Maturities and calls Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale Purchases Payments to Acquire Debt Securities, Available-for-sale Plant and equipment additions Payments to Acquire Productive Assets Proceeds from sale of plant and equipment Proceeds from Sale of Property, Plant, and Equipment (Increase) Decrease in other assets Increase (Decrease) in Other Operating Assets Net cash used for investing activities Net Cash Provided by (Used in) Investing Activities CASH FLOWS USED FOR FINANCING ACTIVITIES: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Repayment of long-term debt Repayments of Long-term Debt Issuance of common stock from stock plan transactions Proceeds from Issuance of Common Stock Cash dividends paid Payments of Ordinary Dividends, Common Stock Repurchases of common stock Payments for Repurchase of Common Stock Net cash used for financing activities Net Cash Provided by (Used in) Financing Activities NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS Cash and Cash Equivalents, Period Increase (Decrease) CASH AND CASH EQUIVALENTS, Beginning of year Cash and Cash Equivalents, at Carrying Value CASH AND CASH EQUIVALENTS, End of year Consolidation Consolidation, Policy [Policy Text Block] Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Allowance For Doubtful Accounts Allowance For Doubtful Accounts [Policy Text Block] Allowance For Doubtful Accounts [Policy Text Block] Investments Investment, Policy [Policy Text Block] Fair Value of Financial Instruments Fair Value of Financial Instruments, Policy [Policy Text Block] Inventories Inventory, Policy [Policy Text Block] Plant and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Impairment or Disposal of Long-Lived Assets Impairment or Disposal of Long-Lived Assets, Including Intangible Assets, Policy [Policy Text Block] Patents Intangible Assets, Finite-Lived, Policy [Policy Text Block] Goodwill and Other Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Advertising and Promotional Materials Advertising Costs, Policy [Policy Text Block] Repairs and Maintenance Maintenance Cost, Policy [Policy Text Block] Self-Insurance Self Insurance [Policy Text Block] Self Insurance [Policy Text Block] Product Warranty Standard Product Warranty, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Other Comprehensive Income (Loss) Comprehensive Income, Policy [Policy Text Block] Foreign Currency Translation Foreign Currency Transactions and Translations Policy [Policy Text Block] Stock-Based Compensation Plans Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block] Estimates Use of Estimates, Policy [Policy Text Block] Recent Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Revenue from External Customers by Products and Services [Table] Revenue from External Customers by Products and Services [Table] Segments [Domain] Automotive Products Automotive Products Segment [Member] Automotive Products Segment [Member] Automotive Mirrors Automotive Mirrors [Member] Automotive Mirrors [Member] Other Products Revenue Revenue from External Customer [Line Items] Revenue from External Customer [Line Items] TCJA, provision reduction to income tax expense Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred Tax Liability, Provisional Income Tax (Expense) Benefit Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred Tax Liability, Provisional Income Tax (Expense) Benefit Income taxes paid Income Taxes Paid Unrecognized tax benefits accrued interest Unrecognized Tax Benefits, Interest on Income Taxes Accrued Income Taxes Income Tax Disclosure [Text Block] Quarterly Financial Information Disclosure [Abstract] Net Sales Gross Profit Operating Income Earnings Per Share (Basic) (in dollars per share) Earnings Per Share (Diluted) (in dollars per share) Commitments and Contingencies Disclosure [Abstract] Contingencies Commitments and Contingencies Disclosure [Text Block] Schedule of Goodwill Schedule of Goodwill [Table Text Block] Schedule of Intangible Assets Schedule of Intangible Assets and Goodwill [Table Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Retirement Benefits [Abstract] Company's contributions under 401(k) retirement savings plan Defined Benefit Plan, Plan Assets, Contributions by Employer SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves Type [Axis] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] Allowance for Doubtful Accounts SEC Schedule, 12-09, Allowance, Credit Loss [Member] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] Activity in the Company’s allowance for doubtful accounts SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] Beginning Balance SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Net Additions/ (Reductions) to Costs and Expenses SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense Deductions and Other Adjustments SEC Schedule, 12-09, Valuation Allowances and Reserves, Increase (Decrease) Adjustment Ending Balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Shares, Nonvested stock options at Beginning of Year (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Shares, Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Shares, Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Shares, Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Shares, Nonvested stock options at End of Year (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Wtd. Avg Grant Date Fair Value, Nonvested stock options at Beginning of Year (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Wtd. Avg Grant Date Fair Value, Granted (in dollars 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 Wtd. Avg Grant Date Fair Value, Vested (in dollars 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 Wtd. Avg Grant Date Fair Value, Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Wtd. Avg Grant Date Fair Value, Nonvested stock options at End of Year (in dollars per share) Schedule of Revenue by Major Customers, by Reporting Segments [Table] Schedule of Revenue by Major Customers, by Reporting Segments [Table] Concentration Risk by Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer concentration risk Customer Concentration Risk [Member] Major Customers [Axis] Customer [Axis] Name of Major Customer [Domain] Customer [Domain] Toyota Motor Company Toyota Motor Company [Member] Toyota Motor Company [Member] Volkswagen Group Volkswagen Group [Member] Volkswagen Group [Member] Ford Motor Company Ford Motor Company [Member] Ford Motor Company [Member] Daimler Group Daimler Group [Member] Daimler Group [Member] Revenue, Major Customer [Line Items] Percentage net sales invoiced and paid in foreign currencies Percentage Net Sales Invoiced And Paid In Foreign Currencies Percentage net sales invoiced and paid in foreign currencies. Number of customers which individually accounted for 10% or more of net sales Number Of Customers Which Individually Accounted For 10 Percent Or More Of Net Sales Number of customers which individually accounted for 10% or more of net sales. Percentage of revenue individually accounted by customers (less than 10% for Ford Motor Company in 2018 and for Daimler AG in 2016) Concentration Risk, Percentage Schedule of Weighted-Average Assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Summary of Stock Option Activity Share-based Compensation, Stock Options, Activity [Table Text Block] Schedule of Non-Vested Stock Option Activity Schedule of Nonvested Share Activity [Table Text Block] Schedule of Employee Stock Purchase Plan Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block] Schedule of Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Schedule of Components of Provision For Income Taxes Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Schedule of Effective Income Tax Rates Different From Statutory Federal Income Tax Rates Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Deferred Income Tax Assets And Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Stock Compensation Plan Stock Compensation Plan [Member] Employee Stock Ownership Plan (ESOP) Disclosures, by Plan [Axis] Employee Stock Ownership Plan (ESOP) Name [Axis] Employee Stock Ownership Plan (ESOP), Plan [Domain] Employee Stock Ownership Plan (ESOP), Plan [Domain] Previous Non-Employee Director Stock Option Plan Previous Non Employee Director Stock Option Plan [Member] Previous Non Employee Director Stock Option Plan [Member] Restricted Stock Plan Restricted Stock Plan [Member] Restricted Stock Plan [Member] Restricted Stock Plan, Five Years Restricted Stock Plan, Five Years [Member] Restricted Stock Plan, Five Years [Member] Restricted Stock Plan, Four Years Restricted Stock Plan, Four Years [Member] Restricted Stock Plan, Four Years [Member] Employee Stock Purchase Plan Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan [Member] Employee Stock Purchase Plan, 2013 Employee Stock Purchase Plan, 2013 [Member] Employee Stock Purchase Plan, 2013 [Member] Options available for grant (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Options granted net of shares from canceled/expired options (in shares) Share Based Compensation Arrangement By Share Based Payment Award Options Grants Share based compensation arrangement by share based payment award options grants. Option vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Award expiration period Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period Unrecognized compensation cost Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Weighted-average period for unrecognized compensation cost expected to be recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Shares approved (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Grants in period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross ESPP discount rate Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date Discount recognized as compensation expense Share Based Compensation Arrangement By Share Based Payment Award Discount Recognized As Compensation Expense Share-based compensation arrangement by share-based payment award discount recognized as compensation expense. Shares sold to employees during period (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Cumulative shares sold to employees during period (in shares) Cumulative Stock Issued During Period, Shares, Employee Stock Purchase Plans Cumulative Stock Issued During Period, Shares, Employee Stock Purchase Plans Weighted average fair value of shares sold (in dollars per share) Stock Issued During Period, Weighted Average Fair Value, Employee Stock Purchase Plans Stock Issued During Period, Weighted Average Fair Value, Employee Stock Purchase Plans Restricted period, maximum, in years Share-Based Compensation, Restricted Period Share-based compensation, restricted period. Shares granted with restriction period (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross Shares, granted (in shares) Restricted period for granted shares, in years Share Based Compensation Restricted Period For Granted Shares Share based compensation restricted period for granted shares. Market price (in dollars per share) Share Based Compensation Arrangement By Share Based Payment Award Market Price of Restricted Stock Share based compensation arrangement by share based payment award market price of restricted stock. Unearned stock-based compensation Deferred Compensation Equity Amortization expense Restricted Stock or Unit Expense Stock-Based Compensation Plans Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Employee Benefit Plan Pension and Other Postretirement Benefits Disclosure [Text Block] Dividends declared per share (in dollars per share) Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table] Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table] Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] HomeLink® HomeLink® [Member] HomeLink® [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] Patents and Other Intangible Assets Patents and Other Intangible Assets [Member] Patents and Other Intangible Assets [Member] Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] [Line Items] for Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table] Goodwill Goodwill Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Amortization expense Amortization of Intangible Assets Finite-lived intangible asset, useful life Finite-Lived Intangible Asset, Useful Life Amortization expense, 2019 Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months Amortization expense, 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Two Amortization expense, 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Three Amortization expense, 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Four Amortization expense, 2023 Finite-Lived Intangible Assets, Amortization Expense, Year Five Schedule of Quarterly Financial Information Quarterly Financial Information [Table Text Block] ASSETS Assets [Abstract] Cash and cash equivalents Short-term investments Short-term Investments Accounts receivable, net Accounts Receivable, Net, Current Inventories, net Prepaid expenses and other Prepaid Expense and Other Assets, Current Total current assets Assets, Current PLANT AND EQUIPMENT: Property, Plant and Equipment [Abstract] Land, buildings and improvements Buildings and Improvements, Gross Machinery and equipment Machinery and Equipment, Gross Construction-in-process Construction in Progress, Gross Total Plant and Equipment Property, Plant and Equipment, Gross Less- Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Net Plant and Equipment Property, Plant and Equipment, Net OTHER ASSETS: Assets, Noncurrent [Abstract] Long-term investments Long-term Investments Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Patents and other assets, net Patent and Other Assets, Net Patent and Other Assets, Net Total Other Assets Other Assets, Noncurrent TOTAL ASSETS Assets LIABILITIES AND SHAREHOLDERS’ INVESTMENT Liabilities [Abstract] CURRENT LIABILITIES: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued liabilities: Accrued Liabilities, Current [Abstract] Salaries, wages and vacation Employee-related Liabilities, Current Income taxes Accrued Income Taxes, Current Royalties Accrued Royalties, Current Dividends payable Dividends Payable, Current Current portion of long term debt Long-term Debt, Current Maturities Other Other Accrued Liabilities, Current Total current liabilities Liabilities, Current DEFERRED INCOME TAXES TOTAL LIABILITIES Liabilities SHAREHOLDERS’ INVESTMENT: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, no par value, 5,000,000 shares authorized; none issued or outstanding Preferred Stock, Value, Issued Common stock, par value $.06 per share; 400,000,000 shares authorized; 259,328,613 and 280,281,321 shares issued and outstanding in 2018 and 2017 respectively. Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income: Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized gain on investments Accumulated Other Comprehensive Income (Loss), Debt Securities, Available-for-sale, Adjustment, after Tax Unrealized gain (loss) on derivatives AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax Cumulative translation adjustment Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Total shareholders’ investment TOTAL LIABILITES AND SHAREHOLDERS' INVESTMENT Liabilities and Equity Dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Expected volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected term of options (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Weighted-average grant-date fair value (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Other Other Segments [Member] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments Operating Segments [Member] Corporate Corporate, Non-Segment [Member] Segment Reporting Information [Line Items] Income (Loss) from Operations Assets Depreciation & Amortization Capital Expenditures Aggregate Unrealized Losses, Less than one year Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Aggregate Fair Value, Less than one year Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months Aggregate Unrealized Losses, Greater than one year Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Aggregate Fair Value, Greater than one year Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer Aggregate Unrealized Losses, Total Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss Aggregate Fair Value, Total Debt Securities, Available-for-sale, Unrealized Loss Position Statutory federal income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent State income taxes, net of federal income tax benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Domestic production exclusion Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Percent Research tax credit Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent Increase (reduction) in reserve for uncertain tax provisions Effective Income Tax Rate Reconciliation, Increase (Reduction) in Reserve for Uncertain Tax Provisions Effective Income Tax Rate Reconciliation, Increase (Reduction) in Reserve for Uncertain Tax Provisions Change in tax rate on deferred taxes Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent Foreign tax credit Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Percent Foreign derived intangible income deduction Effective Income Tax Rate Reconciliation, Deduction, Extraterritorial Income Exclusion, Percent Stock compensation Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Percent Other Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Goodwill [Roll Forward] Goodwill [Roll Forward] Balance as of December 31, 2017 Acquisitions Goodwill, Acquired During Period Divestitures Goodwill, Written off Related to Sale of Business Unit Impairments Goodwill, Impairment Loss Other Goodwill, Other Increase (Decrease) Balance as of December 31, 2018 Indefinite-lived Intangible Assets by Major Class [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] HomeLink Trade Names and Trademarks Trademarks and Trade Names [Member] Exclusive Licensing Agreement Licensing Agreements [Member] Homelink Technology Developed Technology Rights [Member] Existing Customer Platforms Customer Contracts [Member] Indefinite-lived intangible assets Indefinite-lived Intangible Assets (Excluding Goodwill) Finite-lived intangible assets, gross Finite-Lived Intangible Assets, Gross Finite-lived intangible assets, accumulated amortization Finite-lived intangible assets, net Finite-Lived Intangible Assets, Net Intangible assets, gross Intangible Assets, Gross (Excluding Goodwill) Intangible assets, net Quarterly Financial Information (Unaudited) Quarterly Financial Information [Text Block]