Working Capital [Abstract] Working Capital [Abstract] Inventories Schedule of Inventory, Current [Table Text Block] Other Current Liabilities Schedule of Accrued Liabilities [Table Text Block] Other non-current liabilities Other Noncurrent Liabilities [Table 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] Award Type [Axis] Award Type [Axis] Award Type [Domain] Equity Award [Domain] Options/SARs Outstanding Stock Options And Stock Appreciation Rights [Member] Stock Options And Stock Appreciation Rights [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Award transactions on stock options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding, Beginning Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Outstanding shares awards exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Outstanding, Ending Outstanding shares exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Award transactions on stock options, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Weighted average exercise price, Beginning Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted average exercise price, Awards exercised Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Weighted average exercise price, Ending Weighted average exercise price, Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted average remaining contractual life, Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Weighted average remaining contractual life, Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate intrinsic value, Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Aggregate intrinsic value, Exercisable Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Retirement Benefits [Abstract] Employee Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Income Tax Disclosure [Abstract] United States Income (Loss) from Continuing Operations before Income Taxes, Domestic International Income (Loss) from Continuing Operations before Income Taxes, Foreign Earnings before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Accounting Policies [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Restatement [Axis] Restatement [Axis] Restatement [Domain] Restatement [Domain] Without adoption of ASC 606 Previously Reported [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Net sales Revenue from Contract with Customer, Excluding Assessed Tax Cost of sales Cost of Goods and Services Sold Gross profit Gross Profit Selling, general and administrative expenses Selling, General and Administrative Expense Operating income Operating Income (Loss) Tax expense (benefit) Income Tax Expense (Benefit) Net earnings Net Income (Loss) Attributable to Parent Inventories Inventory, Net Costs and earnings on contracts in excess of billings Costs in Excess of Billings Billings in excess of costs and earnings on uncompleted contracts Billings in Excess of Cost Other current liabilities Other Liabilities, Current Retained earnings Retained Earnings (Accumulated Deficit) Debt Disclosure [Abstract] Debt Debt Disclosure [Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingent Liabilities Commitments and Contingencies Disclosure [Text Block] Interest on debt Interest Expense, Debt Other interest expense Interest Expense, Other Interest expense Interest Expense Supplemental Balance Sheet Information Working Capital [Text Block] Working Capital [Text Block] Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] 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] Customer relationships Customer Relationships [Member] Backlog Order or Production Backlog [Member] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Tradename Trade Names [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] EFCO Corporation EFCO Corporation [Member] EFCO Corporation [Member] Sotawall Sotawall [Member] Sotawall [Member] Business Acquisition Business Acquisition [Line Items] Total other intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Estimated useful life (in years) Finite-Lived Intangible Asset, Useful Life Goodwill and Intangible Assets Disclosure [Abstract] Schedule Of Finite Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] One Trademark One Trademark [Member] One Trademark [Member] Finite Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Goodwill impairment Goodwill, Impairment Loss Carrying value Indefinite-lived Intangible Assets (Excluding Goodwill) Impairment on intangible assets Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) Amortization of Intangible Assets Amortization of Intangible Assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Discount rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Net periodic pension expense, Expected return on plan assets Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets Marketable Securities [Abstract] Financial Instruments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Statement of Financial Position [Abstract] Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Schedule of Defined Benefit Plans Disclosures Schedule of Defined Benefit Plans Disclosures [Table Text Block] Schedule of Amounts Recognized in Balance Sheet Schedule of Amounts Recognized in Balance Sheet [Table Text Block] Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized as Components of Net Periodic Benefit Cost Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block] Schedule of Amounts Recognized in Comprehensive Earnings Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Schedule of Net Benefit Costs Schedule of Net Benefit Costs [Table Text Block] Schedule of Assumptions Used Schedule of Assumptions Used [Table Text Block] Schedule of Expected Benefit Payments Schedule of Expected Benefit Payments [Table Text Block] Award transactions on stock options Schedule of Share-based Compensation, Stock Options and Stock Appreciation Rights Award Activity [Table Text Block] Nonvested share award transactions Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Components of net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Interest cost Defined Benefit Plan, Interest Cost Expected return on assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Amortization of unrecognized net loss Defined Benefit Plan, Amortization of Gain (Loss) Net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Summary of Significant Accounting Policies and Related Data Significant Accounting Policies [Text Block] Nonvested share award transactions Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Nonvested Number, Beginning Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Number of shares, Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Number of shares, Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Number of shares, Canceled Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Nonvested Number, Ending Nonvested share award transactions, Wieghted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Weighted average grant date fair value, Beginning Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Weighted average grant date fair value, Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Weighted average grant date fair value, Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Weighted average grant date fair value, Canceled Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Weighted average grant date fair value, Ending Quarterly Financial Information Disclosure [Abstract] Revenues Revenues Gross profit Net earnings Earnings per share - basic Earnings Per Share, Basic [Abstract] Earnings per share - basic (USD per share) Earnings Per Share, Basic Earnings per share - diluted Earnings Per Share, Diluted [Abstract] Earnings per share - diluted (USD per share) Earnings Per Share, Diluted Net working capital Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Working Capital Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Working Capital Property, plant and equipment Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Goodwill Goodwill Other intangible assets Less: Long-term liabilities acquired, net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities Net assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Income Taxes Income Tax Disclosure [Text Block] Accounting Policies [Table] Accounting Policies [Table] Accounting Policies [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Accumulated Other Comprehensive (Loss) Income AOCI Attributable to Parent [Member] New Accounting Pronouncement, Early Adoption [Axis] New Accounting Pronouncement, Early Adoption [Axis] New Accounting Principles, Early Adoption [Domain] New Accounting Principles, Early Adoption [Domain] New Accounting Pronouncement, Early Adoption, Effect New Accounting Pronouncement, Early Adoption, Effect [Member] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Domain] Timing of Transfer of Good or Service [Domain] Recognized at shipment Transferred at Point in Time [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Cost of Sales Cost of Sales [Member] Selling, general and administrative expenses Selling, General and Administrative Expenses [Member] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Domain] Initial Application Period Cumulative Effect Transition [Domain] Difference between Revenue Guidance in Effect before and after Topic 606 Difference between Revenue Guidance in Effect before and after Topic 606 [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] ASU 2014-09 Accounting Standards Update 2014-09 [Member] ASU 2018-02 Accounting Standards Update 2018-02 [Member] Accounting Standards Update 2018-02 [Member] ASU 2017-07 Accounting Standards Update 2017-07 [Member] ASU 2016-02 Accounting Standards Update 2016-02 [Member] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Scenario, Forecast Scenario, Forecast [Member] Accounting Policies [Line Items] Accounting Policies [Line Items] [Line Items] for Accounting Policies [Table] Fiscal time period Fiscal Time Period Fiscal Time Period Performance Period For Percentage Of Completion Contracts Performance Period For Percentage Of Completion Contracts Performance Period For Percentage Of Completion Contracts Percentage of total revenue Percentage Of Total Revenue Percentage Of Total Revenue Fixed-price contracts, number of businesses Number Of Businesses Which Operate Under Long-Term, Fixed-Price Contracts Number Of Businesses Which Operate Under Long-Term, Fixed-Price Contracts Fixed-price contracts, percentage of total revenue Number Of Businesses Which Operate Under Long-Term, Fixed-Price Contracts, Percent Of Total Revenue Number Of Businesses Which Operate Under Long-Term, Fixed-Price Contracts, Percent Of Total Revenue Number of business which changed revenue recognition practices due to adoption Number Of Businesses Which Changed Revenue Recognition Practices Due To New Accounting Pronouncement Number Of Businesses Which Changed Revenue Recognition Practices Due To New Accounting Pronouncement Number of businesses Number Of Businesses Which Recognize Revenue Following The Over-Time Output Method Number Of Businesses Which Recognize Revenue Following The Over-Time Output Method Percentage of total revenue Number Of Businesses Which Recognize Revenue Following The Over-Time Output Method, Percent Of Total Revenue Number Of Businesses Which Recognize Revenue Following The Over-Time Output Method, Percent Of Total Revenue Research and development expense Research and Development Expense Advertising expense Advertising Expense Share repurchases, shares Stock Repurchased During Period, Shares Share repurchases, value Stock Repurchased During Period, Value Income tax effects Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense Net periodic benefit cost Right-of-use asset Operating Lease, Right-of-Use Asset Lease liability Operating Lease, Liability Document and Entity Information [Abstract] Abstract for Document and Entity Information Entity Registrant Name Entity Registrant Name Trading Symbol Trading Symbol Entity Central Index Key Entity Central Index Key Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding 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 Public Float Entity Public Float Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Financial Instrument [Axis] Financial Instrument [Axis] Major Types Of Debt And Equity Securities [Domain] Financial Instruments [Domain] Municipal bonds Municipal Bonds [Member] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Amortized Cost, Due within one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Amortized Cost, Due after one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Amortized Cost, Due after five years through 10 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost Amortized Cost, Due after 10 years through 15 years Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost Amortized Cost, Due beyond 15 years Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Estimated Market Value, Due within one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Estimated Market Value, Due after one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Estimated Market Value, Due after five years through 10 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Estimated Market Value, Due after 10 years through 15 years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Estimated Market Value, Due beyond 15 years Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value Estimated Fair Value Debt Securities, Available-for-sale Basis of Consolidation Consolidation, Policy [Policy Text Block] Fiscal Year Fiscal Period, Policy [Policy Text Block] Accounting Estimates Use of Estimates, Policy [Policy Text Block] Cash Equivalents Cash and Cash Equivalents, Policy [Policy Text Block] Inventories Inventory, Policy [Policy Text Block] Property, Plant and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Goodwill and Other Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Self-Insurance Unpaid Policy Claims and Claims Adjustment Expense, Policy [Policy Text Block] Warranty Guarantees, Indemnifications and Warranties Policies [Policy Text Block] Foreign Currency Foreign Currency Transactions and Translations Policy [Policy Text Block] Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Shipping and Handling Shipping and Handling Cost, Policy [Policy Text Block] Research and Development Research and Development Expense, Policy [Policy Text Block] Advertising Advertising Costs, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Subsequent Events Subsequent Events, Policy [Policy Text Block] New Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] 2016 Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 2017 Long-term Debt, Maturities, Repayments of Principal in Year Two 2018 Long-term Debt, Maturities, Repayments of Principal in Year Three 2019 Long-term Debt, Maturities, Repayments of Principal in Year Four 2020 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Total long-term debt Long-term Debt Schedule of estimated future amortization expense for identifiable intangible assets Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months Estimated amortization expense, Fiscal 2017 Finite-Lived Intangible Assets, Amortization Expense, Year Two Estimated amortization expense, Fiscal 2018 Finite-Lived Intangible Assets, Amortization Expense, Year Three Estimated amortization expense, Fiscal 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Four Estimated amortization expense, Fiscal 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Five Other accruals Deferred Tax Assets (Liabilities), Tax Deferred Expense, Reserves and Accruals, Other, Non Current Deferred Tax Assets (Liabilities), Tax Deferred Expense, Reserves and Accruals, Other, Non Current Deferred compensation Deferred Tax Assets (Liabilities), Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost, Non Current Deferred Tax Assets (Liabilities), Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost, Non Current Goodwill and other intangibles Deferred Tax Assets (Liabilities), Goodwill and Intangible Assets, Non Current Deferred Tax Assets (Liabilities), Goodwill and Intangible Assets, Non Current Depreciation Deferred Tax Assets (Liabilities), Property, Plant and Equipment, Non Current Deferred Tax Assets (Liabilities), Property, Plant and Equipment, Non Current Liability for unrecognized tax benefits Unrecognized Tax Benefits, Non Current Unrecognized Tax Benefits, Non Current Net operating losses and tax credits Deferred Tax Assets, Operating Loss Carryforwards, Non Current Deferred Tax Assets, Operating Loss Carryforwards, Non Current Valuation allowance on net operating losses Deferred Tax Assets, Valuation Allowance, Noncurrent Unearned income Deferred Tax Assets, Deferred Income Other Deferred Tax Assets (Liabilities), Other, Non Current Deferred Tax Assets (Liabilities), Other, Non Current Deferred tax assets (liabilities) Deferred Tax Assets (Liabilities), Noncurrent Deferred Tax Assets (Liabilities), Noncurrent Earnings Per Share [Abstract] Reconciliation of basic and diluted earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Segment Reporting [Abstract] Business Segment Data Segment Reporting Disclosure [Text Block] Amortized cost, gross unrealized gains and losses, and estimated fair values of investments available for sale Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Schedule of length of time that available-for-sale securities were in continuous unrealized loss positions Schedule of Unrealized Loss on Investments [Table Text Block] Schedule of amortized cost and estimated fair values of investments by contractual maturity Investments Classified by Contractual Maturity Date [Table Text Block] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2009 Stock Incentive Plan Two Thousand and Nine Stock Incentive Plan [Member] Two thousand and nine stock incentive plan. 2009 Non-Employee Director Stock Incentive Plan Two Thousand and Nine Non Employee Director Stock Incentive Plan [Member] Two thousand and nine non employee director stock incentive plan. Employee Stock Option Employee Stock Option [Member] Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Restricted Stock Restricted Stock [Member] Number of shares authorized for issuance Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Award vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Term of outstanding options and SARs Stock option and SARs term Stock option and SARs term Share-based Compensation Share-based Compensation Weighted average period, Nonvested Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Cash proceeds from exercise of stock options Proceeds from Stock Options Exercised Aggregate intrinsic value of securities Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Total unrecognized compensation cost related to nonvested share Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Total fair value of shares vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Raw materials Inventory, Raw Materials, Net of Reserves Work-in-process Inventory, Work in Process, Net of Reserves Finished goods Inventory, Finished Goods, Net of Reserves Total inventories Deferred benefit from New Markets Tax Credit transactions Accumulated Deferred Investment Tax Credit Retirement plan obligations Liability, Defined Benefit Plan, Noncurrent Deferred compensation plan Deferred Compensation Liability, Classified, Noncurrent Other Additional Other Liabilities, Noncurrent Additional Other Liabilities, Noncurrent Total other non-current liabilities Other Accrued Liabilities, Noncurrent Net actuarial gain Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, after Tax Earnings per Share Earnings Per Share [Text Block] Revenue from Contract with Customer [Abstract] Disaggregated revenue data Disaggregation of Revenue [Table Text Block] Net receivables Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Contract assets and liabilities Contract with Customer, Asset and Liability [Table Text Block] Performance obligations expected to be satisfied Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Statement of Cash Flows [Abstract] Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net earnings to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Share-based compensation Deferred income taxes Deferred Income Tax Expense (Benefit) (Loss) gain on disposal of assets Gain (Loss) on Disposition of Property Plant Equipment Proceeds from new markets tax credit transaction, net of deferred costs Proceeds from new markets tax credit transaction, net of deferred costs Proceeds from new markets tax credit transaction, net of deferred costs Other, net Other Noncash Income (Expense) Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Receivables Increase (Decrease) in Receivables Inventories Increase (Decrease) in Inventories Costs and earnings on contracts in excess of billings Increase (Decrease) in Contract with Customer, Asset Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Billings in excess of costs and earnings on uncompleted contracts Increase (Decrease) in Contract with Customer, Liability Refundable and accrued income taxes Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable Other, net Increase (Decrease) in Other Operating Assets and Liabilities, Net Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Capital expenditures Payments to Acquire Property, Plant, and Equipment Purchases of marketable securities Payments to Acquire Debt Securities, Available-for-sale Sales/maturities of marketable securities Proceeds from Sale of Debt Securities, Available-for-sale Proceeds from sales of property, plant and equipment Proceeds from Sale of Property, Plant, and Equipment Acquisition of business and intangibles Payments to Acquire Businesses, Net of Cash Acquired Other, net Payments for (Proceeds from) Other Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Borrowings on line of credit Proceeds from (Repayments of) Lines of Credit Payments on line of credit Repayments of Lines of Credit Shares withheld for taxes, net of stock issued to employees Shares Withheld For Taxes Net Of Stock Issued To Employees The cash outflow paid by the company to cover an employee's income tax withholding obligation as part of a net-share settlement of a share-based award, net of the total cash inflow associated with the amount received from holders to acquire the entity's shares under incentive and share awards, including stock option exercises. Repurchase and retirement of common stock Payments for Repurchase of Common Stock Dividends paid Payments of Ordinary Dividends, Common Stock Other, net Proceeds from (Payments for) Other Financing Activities Net cash (used in) provided by financing activities Net Cash Provided by (Used in) Financing Activities Increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Effect of exchange rates on cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, cash equivalents and restricted cash at beginning of year Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, cash equivalents and restricted cash at end of period Noncash Activity Noncash Investing and Financing Items [Abstract] Capital expenditures in accounts payable Capital Expenditures Incurred but Not yet Paid Deferred payments on acquisition of business Deferred Acquisition Payments Deferred Acquisition Payments Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Common Stock Common Stock [Member] Additional Paid-In Capital Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Common Stock Held in Trust Common Stock Held In Trust [Member] Common stock held in trust. Deferred Compensation Obligation Deferred Compensation Obligation [Member] Deferred compensation obligation. Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance Stockholders' Equity Attributable to Parent Balance, shares Shares, Outstanding Net earnings Cumulative Effect of New Accounting Principle in Period of Adoption Cumulative Effect of New Accounting Principle in Period of Adoption Unrealized gain (loss) on marketable securities, net of tax Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Unrealized gain (loss) on foreign currency hedge, net of tax Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Unrealized gain (loss) on pension obligation, net of tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Reclassification of tax effects (see Note 1) Issuance of stock, net of cancellations Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Issuance of stock, net of cancellations, shares Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Share-based compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Tax benefit (deficit) associated with stock plans Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Exercise of stock options, shares Share repurchases Share repurchases, shares Other share retirements Stock Redeemed or Called During Period, Value Other share retirements, shares Stock Redeemed or Called During Period, Shares Cash dividends Dividends, Common Stock, Cash Balance Balance, shares Schedule of Recognized Identified Assets Acquired Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] Business Acquisition, Pro Forma Information Business Acquisition, Pro Forma Information [Table Text Block] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] Financial Statement Schedules - Valuation and Qualifying Accounts SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Foreign Tax Authority Foreign Tax Authority [Member] State State and Local Jurisdiction [Member] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Income tax payments, net of refunds Income Taxes Paid, Net Effective income tax rate, change related to new tax laws Effective Income Tax Rate Reconciliation, Tax Cuts And Jobs Act Of 2017, Impact, Percent Effective Income Tax Rate Reconciliation, Tax Cuts And Jobs Act Of 2017, Impact, Percent Tax Cuts And Jobs Act Of 2017, impact on deferred tax assets Net operating loss carryforwards Operating Loss Carryforwards Valuation allowance of net operating loss carryforwards Operating Loss Carryforwards, Valuation Allowance Tax benefits that if recognized would decrease the effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Tax benefits that if recognized would result in adjustments to deferred taxes Unrecognized Tax Benefits that Would Result In Adjustments To Deferred Taxes Unrecognized Tax Benefits that Would Result In Adjustments To Deferred Taxes Reserve for interest and penalties Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Decrease in total liability for unrecognized tax benefits due to audit settlements and lapsing of statutes Unrecognized Tax Benefits Reductions Resulting From Settlements With Taxing Authorities And Lapse Of Applicable Statute Of Limitations Unrecognized Tax Benefits Reductions Resulting From Settlements With Taxing Authorities And Lapse Of Applicable Statute Of Limitations Estimated future benefit payments Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months 2019 Defined Benefit Plan, Expected Future Benefit Payment, Year Two 2020 Defined Benefit Plan, Expected Future Benefit Payment, Year Three 2021 Defined Benefit Plan, Expected Future Benefit Payment, Year Four 2022 Defined Benefit Plan, Expected Future Benefit Payment, Year Five 2023-2027 Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter Revenue recognized related to contract liabilities at Marc 4, 2018 Contract with Customer, Liability, Revenue Recognized Revenue related to performance obligations satisfied in previous periods due to changes in contract estimates Contract with Customer, Performance Obligation Satisfied in Previous Period Equity [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Share Repurchase Program Share Repurchase Program [Member] Share Repurchase Program [Member] Stock Based Compensation Plans Stock Compensation Plan [Member] Class of Stock [Line Items] Class of Stock [Line Items] Junior preferred stock, shares Preferred Stock, Shares Authorized Junior preferred stock par value Preferred Stock, Par or Stated Value Per Share Increase in authorized shares under the share repurchase program Stock Repurchase Program Additional Number Of Shares Authorized To Be 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[Domain] Allowances for doubtful receivables SEC Schedule, 12-09, Allowance, Credit Loss [Member] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] Balance at Beginning of Period SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount SEC Schedule, 12-09, Valuation Allowances and Reserves, Business Acquired SEC Schedule, 12-09, Valuation Allowances and Reserves, Business Acquired Charged to Costs and Expenses SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense Deductions from Reserves SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction Other changes add (deduct) SEC Schedule, 12-09, Valuation Allowances and Reserves, Increase (Decrease) Adjustment Balance 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Total Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Trade accounts Trade Accounts Receivable [Member] Construction contracts Accounts Receivable, Construction Contracts [Member] Accounts Receivable, Construction Contracts [Member] Contract retainage Accounts Receivable, Contract Retainage [Member] Accounts Receivable, Contract Retainage [Member] Other receivables Other Receivables [Member] Other Receivables [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Total receivables Accounts Receivable, Gross Less: allowance for doubtful accounts Allowance for Doubtful Accounts Receivable Net receivables Accounts Receivable, Net Quarterly Data (Unaudited) Quarterly Financial Information [Text Block] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Total Revenue, Remaining Performance Obligation, Amount Revenue, Remaining Performance Obligation, Amount Schedule of 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] Buildings and improvements Building and Building Improvements [Member] Machinery and equipment Machinery and Equipment [Member] Office 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Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Net property, plant and equipment Property, Plant and Equipment, Net Depreciation expense Depreciation Proceeds from sale of property Proceeds from Sale of Property Held-for-sale Schedule of Quarterly Financial Information Quarterly Financial Information [Table Text Block] Net unrealized loss on marketable securities Accumulated Other Comprehensive Income (Loss), Debt Securities, Available-for-sale, Adjustment, after Tax Foreign currency hedge Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax Pension liability adjustments Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax Foreign currency translation adjustments Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Reclassification of tax effects Total accumulated other comprehensive loss Accumulated Other 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Net Finite-Lived Intangible Assets, Net Indefinite-lived Intangible Assets (Excluding Goodwill) Impairment Indefinite-lived Intangible Assets, Translation Adjustments Indefinite-lived Intangible Assets, Foreign Currency Translation Gain (Loss) Indefinite-lived Intangible Assets (Excluding Goodwill), Net of translation adjustments Indefinite-lived Intangible Assets (Excluding Goodwill), Net of translation adjustments Indefinite-lived Intangible Assets (Excluding Goodwill), Net of translation adjustments Intangible Assets Gross Excluding Goodwill Intangible Assets, Gross (Excluding Goodwill) Intangible Assets Accumulated Amortization Intangible Assets Accumulated Amortization Intangible Assets Accumulated Amortization Intangible Assets Foreign Currency Translation Intangible Assets Foreign Currency Translation Intangible Assets Foreign Currency Translation Intangible Assets, Net (Excluding Goodwill) Intangible Assets, Net (Excluding Goodwill) Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Income before Income Tax, Domestic and Foreign Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Schedule of Components of Income Tax Expense (Benefit) 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] Schedule of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Schedule of Unrecognized Tax Benefits Roll Forward Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Termination Date [Axis] Termination Date [Axis] Termination Date [Axis] Termination Date [Domain] Termination Date [Domain] [Domain] for Termination Date [Axis] October 2020 October 2020 [Member] October 2020 [Member] May 2023 May 2023 [Member] May 2023 [Member] July 2025 July 2025 [Member] July 2025 [Member] August 2025 August 2025 [Member] August 2025 [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Proceeds received Gross Proceeds From New Markets Tax Credit Transaction Gross Proceeds From New Markets Tax Credit Transaction Deferred costs Deferred Costs Net benefit New Markets Tax Credit Transaction, Benefit, Net New Markets Tax Credit Transaction, Benefit, Net Revenue, Receivables and Contract Assets and Liabilities Revenue from Contract with Customer [Text Block] Line of Credit Facility [Table] Line of Credit Facility [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Letter of Credit [Member] Letter of Credit [Member] Borrowings under revolving credit agreement Revolving Credit Facility [Member] Line of Credit [Member] Line of Credit [Member] Industrial Revenue Bonds [Member] Recovery Zone Facility Bonds [Member] Recovery zone facility bonds. Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] CANADA CANADA Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Debt (Textual) [Abstract] Debt (Textual) [Abstract] Debt. Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Revolving credit facility expiration date Line of Credit Facility, Expiration Date Line of Credit Facility, Amount Outstanding Long-term Line of Credit Amount of available commitment Line of Credit Facility, Remaining Borrowing Capacity Debt Interest payments Interest Paid, Including Capitalized Interest, Operating and Investing Activities Impact of new accounting guidance Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Property, Plant and Equipment Property, Plant and Equipment [Table Text Block] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Defined Contribution Plan Employer Contribution Match Level Based On Employee Contribution [Axis] Defined Contribution Plan Employer Contribution Match Level Based On Employee Contribution [Axis] Defined Contribution Plan Employer Contribution Match Level Based On Employee Contribution [Axis] Defined Contribution Plan Employer Contribution Match Level Based On Employee Contribution [Domain] Defined Contribution Plan Employer Contribution Match Level Based On Employee Contribution [Domain] [Domain] for Defined Contribution Plan Employer Contribution Match Level Based On Employee Contribution [Axis] First one percent contributed First One Percent [Member] First One Percent [Member] Two through six percent Two Through Six Percent [Member] Two Through Six Percent Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Other current and non-current liabilities Other Current And Other Noncurrent Liabilities [Member] Other Current And Other Noncurrent Liabilities [Member] Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Number of manufacturing facilities Number Of Manufacturing Facilities That Union Employees Are Covered With 401(k) Plan Number Of Manufacturing Facilities That Union Employees Are Covered With 401(k) Plan Percentage employees are allowed to contribute (up to 60 percent) Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Company matching contribution percentage Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Percentage of eligible compensation contributed Defined Contribution Plan, Employer Matching Contribution, Percent of Match Annual company match amount Defined Contribution Plan, Employer Contribution Amount Defined Contribution Plan, Employer Contribution Amount Deferred compensation obligations Deferred Compensation Liability, Current and Noncurrent Investments in corporate-owned life insurance policies Life Insurance, Corporate or Bank Owned, Amount Mutual funds Mutual Fund Investments Mutual fund investments. Total contribution to multi-employer union retirement plans Multiemployer Plans, Plan Contributions Estimated amortization from accumulated other comprehensive loss into net periodic benefit cost in the next fiscal year Company contributions Defined Benefit Plan, Plan Assets, Contributions by Employer Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Segments [Axis] Segment [Domain] Segments [Domain] Architectural Glass Architectural Glass Segment [Member] Architectural Glass Segment [Member] Architectural Services Architectural Services segment [Member] Architectural Services segment [Member] Architectural Framing Systems Architectural Framing Segment [Member] Architectural Framing Segment [Member] Large-Scale Optical Large Scale Optical Segment [Member] Large Scale Optical Segment [Member] Intersegment elimination Intersegment Eliminations [Member] Corporate and other Corporate and Other [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Operating Income (Loss) Depreciation and Amortization Capital Expenditures Identifiable Assets Assets Other non-current assets Assets for Plan Benefits, Defined Benefit Plan Current liabilities Liability, Defined Benefit Plan, Current Other non-current liabilities Total Liability, Defined Benefit Plan Income Statement [Abstract] Interest income Investment Income, Interest Interest expense Other (expense) income, net Other Nonoperating Income (Expense) Income tax expense Weighted average basic shares outstanding Weighted Average Number of Shares Outstanding, Basic Weighted average diluted shares outstanding Weighted Average Number of Shares Outstanding, Diluted Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Geographic Concentration Risk Geographic Concentration Risk [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Net export sales Sales Revenue, Goods, Net [Member] Number of reportable segments Number of Reportable Segments Number of operating segments Number of Operating Segments Project related charges Project Related Charges Project Related Charges Export net sales as a percentage of consolidated net sales (percentage) Concentration Risk, Percentage Assets Assets [Abstract] Current assets Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Restricted cash Restricted Cash and Cash Equivalents, Current Receivables, net of allowance for doubtful accounts Accounts Receivable, Net, Current Other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property, plant and equipment, net Goodwill Intangible assets Other non-current assets Other Assets, Noncurrent Total assets Liabilities and Shareholders’ Equity Liabilities and Equity [Abstract] Current liabilities Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Accrued payroll and related benefits Employee-related Liabilities, Current Accrued self-insurance reserves Self Insurance Reserve, Current Total current liabilities Liabilities, Current Long-term debt Long-term Debt, Excluding Current Maturities Long-term self-insurance reserves Self Insurance Reserve, Noncurrent Other non-current liabilities Other Liabilities, Noncurrent Commitments and contingent liabilities (Note 10) Commitments and Contingencies Shareholders’ equity Stockholders' Equity Attributable to Parent [Abstract] Common stock of $0.33-1/3 par value; authorized 50,000,000 shares; issued and outstanding 27,015,127 and 28,158,042 shares, respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Common stock held in trust Common Stock Issued, Employee Stock Trust Accumulated other comprehensive loss Total shareholders’ equity Total liabilities and shareholders’ equity Liabilities and Equity Schedule of length of time that available-for-sale securities were in continuous unrealized loss positions Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated as Hedging Instrument Designated as Hedging Instrument [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Foreign Exchange Forward Foreign Exchange Forward [Member] Notional value Derivative, Notional Amount Net liability Derivative, Fair Value, Net Current Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Current Federal Tax Expense (Benefit) State and local Current State and Local Tax Expense (Benefit) International Current Foreign Tax Expense (Benefit) Total current Current Income Tax Expense (Benefit) Deferred Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] Federal Deferred Federal Income Tax Expense (Benefit) State and local Deferred State and Local Income Tax Expense (Benefit) International Deferred Foreign Income Tax Expense (Benefit) Total deferred Total non-current tax expense (benefit) Other Tax Expense (Benefit) Total income tax expense Property, Plant and Equipment Property, Plant and Equipment Disclosure [Text Block] Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax Warranties Product Warranty Accrual, Current Accrued project losses Contract Liabilities, Current Contract Liabilities, Current Taxes Accrual for Taxes Other than Income Taxes, Current Other Other Sundry Liabilities, Current Total other current liabilities Statement of Comprehensive Income [Abstract] Unrealized gain (loss) on marketable securities, tax Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax Unrealized gain (loss) on foreign currency hedge, tax Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax Unrealized gain (loss) on pension obligation, tax Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax Statutory federal income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Tax rate change revaluation Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent Manufacturing deduction Effective Income Tax Rate Reconciliation, Deduction, Qualified Production Activity, Percent State and local income taxes, net of federal tax benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Foreign tax rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent Tax credits - research & development Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent Other, net Effective Income Tax Rate Reconciliation, Other Adjustments, Percent Consolidated effective income tax rate Effective Income Tax Rate Reconciliation, Percent Acquisition Business Combination Disclosure [Text Block] Guarantees and warranties Movement in Extended Product Warranty Accrual [Roll Forward] Balance at beginning of period Extended Product Warranty Accrual Additional accruals Extended Product Warranty Accrual, Increase for Warranties Issued Acquired reserves Extended Product Warranty Accrual, Additions from Business Acquisition Claims paid Extended Product Warranty Accrual, Decrease for Payments Balance at end of period Change in projected benefit obligation Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Benefit obligation beginning of period Defined Benefit Plan, Benefit Obligation Actuarial (gain) Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) Benefit obligation at measurement date Change in plan assets Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] Fair value of plan assets beginning of period Defined Benefit Plan, Plan Assets, Amount Actual return on plan assets Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) Fair value of plan assets at measurement date Estimated future benefit payments Defined Benefit Plan, Benefit Obligation, Benefits Paid Underfunded status Defined Benefit Plan, Funded (Unfunded) Status of Plan Fair Value Measurements, Recurring and Nonrecurring [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] Quoted Prices in Active Markets (Level 1) Fair Value, Inputs, Level 1 [Member] Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Money market funds Money Market Funds, at Carrying Value Commercial paper Commercial Paper, at Carrying Value Total cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Municipal and corporate bonds Short-term Investments, Municipal And Corporate Bonds Short-term Investments, Municipal And Corporate Bonds Municipal and corporate bonds Long-term Investments, Municipal And Corporate Bonds Long-term Investments, Municipal And Corporate Bonds Total assets at fair value Assets, Fair Value Disclosure Cash dividends per share Common Stock, Dividends, Per Share, Cash Paid Amortized cost, gross unrealized gains and losses, and estimated fair values of investments available for sale Debt Securities, Available-for-sale [Abstract] Gross Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Estimated Fair Value Net sales Business Acquisition, Pro Forma Revenue Net earnings Business Acquisition, Pro Forma Net Income (Loss) Basic (USD per share) Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax, Per Share, Basic Diluted (USD per share) Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax, Per Share, Diluted 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] Gross unrecognized tax benefits at beginning of year Unrecognized Tax Benefits Gross increases in tax positions for prior years Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Gross decreases in tax positions for prior years Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Gross increases based on tax positions related to the current year Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Settlements Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Statute of limitations expiration Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations Unrecognized Tax Benefits, Increase Resulting from Revaluation Unrecognized Tax Benefits, Increase Resulting from Revaluation Unrecognized Tax Benefits, Increase Resulting from Revaluation Gross unrecognized tax benefits at end of year Contract assets Contract with Customer, Asset, Net Contract liabilities Contract with Customer, Liability Average daily borrowings during the year Debt Instrument Average Daily Borrowings During The Year Debt Instrument Average Daily Borrowings During The Year Maximum borrowings outstanding during the year Debt Instrument Maximum Borrowings Outstanding During The Year Debt Instrument Maximum Borrowings Outstanding During The Year Weighted average interest rate during the year Debt, Weighted Average Interest Rate Schedule of Maturities of Long-term Debt Schedule of Maturities of Long-term Debt [Table Text Block] Selected Information Related to Long-term Debt Schedule of Debt [Table Text Block] Schedule of Interest Expense Schedule Of Interest Expense [Table Text Block] Schedule Of Interest Expense [Table Text Block] Other comprehensive (loss) earnings: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Unrealized gain (loss) on marketable securities, net of $17, $(29) and $(45) of tax expense (benefit), respectively Unrealized (loss) gain on foreign currency hedge, net of $(172), $47 and $- of tax (benefit) expense, respectively Unrealized gain on pension obligation, net of $72, $87 and $74 of tax expense, respectively Other comprehensive (loss) earnings Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Total comprehensive earnings Comprehensive Income (Loss), Net of Tax, Attributable to Parent Long-term Purchase Commitment [Table] Long-term Purchase Commitment [Table] Current Liabilities and Other Non Current Liabilities Current Liabilities And Other Non Current Liabilities [Member] Current Liabilities And Other Non Current Liabilities [Member] Long-term Purchase Commitment [Line Items] Long-term Purchase Commitment [Line Items] Total rental expense Operating Leases, Rent Expense Future minimum lease payments Number of sale and leaseback agreements Number Of Sale And Leaseback Agreements Number Of Sale And Leaseback Agreements Deferred gain on sale leaseback arrangements Sale Leaseback Transaction, Deferred Gain, Net Average annual lease payment Sale Leaseback Transaction, Annual Rental Payments Company's backlog bonded by performance bonds Companies Backlog Related to Sales Companies backlog related to sales. Face value of performance bonds Guarantees, Fair Value Disclosure Project related liability Project Related Liability Project Related Liability Total value of letter of credit Letters of Credit Outstanding, Amount Purchase obligations Purchase Obligation Number of properties acquired with historical environmental conditions Number Of Properties Acquired With Historical Environmental Conditions Number Of Properties Acquired With Historical Environmental Conditions Reserve for environmental liabilities Accrual for Environmental Loss Contingencies Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Goodwill and Other Identifiable Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Reconciliation of basic and diluted earnings per share Earnings Per Share, Basic and Diluted [Abstract] Basic earnings per share - weighted average common shares outstanding Weighted average effect of nonvested share grants and assumed exercise of stock options Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Diluted earnings per share - weighted average common shares and potential common shares outstanding Stock awards excluded from the calculation of earnings per share because the award price was greater than the average market price of the common shares Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Schedule of Revenues from External Customers and Long-Lived Assets [Table] Schedule of Revenues from External Customers and Long-Lived Assets [Table] United States UNITED STATES Brazil BRAZIL Revenues from External Customers and Long-Lived Assets [Line Items] Revenues from External Customers and Long-Lived Assets [Line Items] Long-Lived Assets Segments [Domain] Architectural Framing Systems Ownership percentage acquired Business Acquisition, Percentage of Voting Interests Acquired Payments to acquire business Payments to Acquire Businesses, Gross Line of credit Schedule Of Goodwill [Table] Schedule of Goodwill [Table] Architectural Glass Architectural [Member] Architectural. Architectural Services Large-Scale Optical Large Scale Optical [Member] Large scale optical. Goodwill [Line Items] Goodwill [Line Items] Schedule of goodwill attributable to each business segment Goodwill [Roll Forward] Goodwill, Beginning Goodwill acquired Goodwill, Acquired During Period Goodwill adjustments for purchase accounting Goodwill, Translation and Purchase Accounting Adjustments Foreign currency translation Goodwill, Foreign Currency Translation Gain (Loss) Goodwill, Ending