Debt Disclosure [Abstract] Line of Credit Facility [Table] Line of Credit Facility [Table] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Canada CANADA Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Revolving credit facility Revolving Credit Facility [Member] Industrial Revenue Bonds Recovery Zone Facility Bonds [Member] Recovery zone facility bonds. Short-term Debt, Type [Axis] Short-term Debt, Type [Axis] Short-term Debt, Type [Domain] Short-term Debt, Type [Domain] Letter of credit Letter of Credit [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Total debt outstanding Debt, Long-term and Short-term, Combined Amount Maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Term Loan Short-term Debt Outstanding borrowings Long-term Line of Credit Debt Long-term Debt Interest payments Interest Paid, Including Capitalized Interest, Operating and Investing Activities Goodwill and Intangible Assets Disclosure [Abstract] Schedule of estimated future amortization expense for identifiable intangible assets Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract] Estimated amortization expense, Remainder of Fiscal 2018 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year Estimated amortization expense, Fiscal 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Two Estimated amortization expense, Fiscal 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Three Estimated amortization expense, Fiscal 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Four Estimated amortization expense, Fiscal 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Five Organization, Consolidation and Presentation of Financial Statements [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Business Combinations [Abstract] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] 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] 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 Backlog [Member] Backlog [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] EFCO Corporation EFCO Corporation [Member] EFCO Corporation [Member] Business Acquisition [Line Items] Business Acquisition [Line Items] Other intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill Estimated useful life (in years) Acquired Finite-lived Intangible Assets, Weighted Average Useful Life Leases [Abstract] Schedule of lease cost Lease, Cost [Table Text Block] Schedule of operating lease liability Lessee, Operating Lease, Liability, Maturity [Table Text Block] Share-based Payment Arrangement [Abstract] Award transactions on stock options Share-based Payment Arrangement, Option and Stock Appreciation Rights, Activity [Table Text Block] Nonvested share award transactions Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] 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] Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock [Member] Common Stock [Member] Additional Paid-in Capital [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] Retained Earnings [Member] Common Stock Held In Trust [Member] Common Stock Held In Trust [Member] Common stock held in trust. Deferred Compensation Obligation [Member] Deferred Compensation Obligation [Member] Deferred compensation obligation. Accumulated Other Comprehensive Income (Loss) [Member] 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) Shares, Outstanding Beginning balance Stockholders' Equity Attributable to Parent Cumulative effect adjustment Cumulative Effect of New Accounting Principle in Period of Adoption Reclassification from AOCI, Current Period, Tax Reclassification from AOCI, Current Period, Tax Reclassification of tax effects Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense Net earnings Net Income (Loss) Attributable to Parent Unrealized gain (loss) on marketable securities, net of tax expense (benefit) 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 expense (benefit) Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture APIC, Share-based Payment Arrangement, Increase for Cost Recognition APIC, Share-based Payment Arrangement, Increase for Cost Recognition Outstanding shares awards exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Stock Issued During Period, Value, Stock Options Exercised Stock Issued During Period, Value, Stock Options Exercised Share repurchases (in shares) Stock Redeemed or Called During Period, Shares Share repurchases Stock Redeemed or Called During Period, Value Stock Repurchased and Retired During Period, Shares Stock Repurchased and Retired During Period, Shares Stock Repurchased and Retired During Period, Value Stock Repurchased and Retired During Period, Value Dividends, Common Stock, Cash Dividends, Common Stock, Cash Ending balance (in shares) Ending balance Revenue from Contract with Customer [Abstract] 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, before Allowance for Credit Loss Less: allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss Net receivables Accounts Receivable, after Allowance for Credit Loss Cash paid for amounts included in the measurement of operating lease liabilities Operating Lease, Payments Lease assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Weighted-average remaining lease term - operating leases Operating Lease, Weighted Average Remaining Lease Term Weighted-average discount rate - operating leases Operating Lease, Weighted Average Discount Rate, Percent Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Marketable Securities [Abstract] Amortized Cost Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract] Due within one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, 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 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 Due after 10 years through 15 years Available-for-sale Securities, Debt Maturities, Year Eleven Through Year Fifteen, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, Year Eleven Through Year Fifteen, Amortized Cost Basis Due beyond 15 years Available-for-sale Securities, Debt Maturities, After Fifteen Years, Amortized Cost Basis Available-for-sale Securities, Debt Maturities, After Fifteen Years, Amortized Cost Basis Total Debt Securities, Available-for-sale, Amortized Cost Estimated Fair Value Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract] Due within one year Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair 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 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 Due after 10 years through 15 years Available-for-sale Securities, Debt Maturities, Year Eleven Through Year Fifteen, Fair Value Available-for-sale Securities, Debt Maturities, Year Eleven Through Year Fifteen, Fair Value Due beyond 15 years Available-for-sale Securities, Debt Maturities, After Fifteen Years, Fair Value Available-for-sale Securities, Debt Maturities, After Fifteen Years, Fair Value Total Debt Securities, Available-for-sale Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] 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] Interest Rate Swap [Member] Interest Rate Swap [Member] Foreign Exchange Forward Foreign Exchange Forward [Member] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Derivative, Notional Amount Derivative, Notional Amount Debt Debt Disclosure [Text Block] Income Tax Disclosure [Abstract] Liability for uncertain tax positions, current and noncurrent Liability for uncertain tax positions, current and noncurrent Liability for uncertain tax positions, current and noncurrent Liability for unrecognized tax benefit, expected decrease Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit Schedule Of Finite Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite Lived Intangible Assets By Major Class [Axis] Finite Lived Intangible Assets Major Class Name [Domain] Customer relationships Debt Issue Costs [Member] Debt issue costs Customer relationships Other intangibles Trademarks [Member] Finite Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Schedule of finite lived identifiable intangible assets Finite-Lived Intangible Assets, Net [Abstract] Gross Carrying Amount Finite-Lived Intangible Assets, Gross Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Foreign Currency Translation Finite Lived Identifiable Intangible Assets, Foreign Currency Translation Adjustment Finite lived identifiable intangible assets translation adjustments. Net Finite-Lived Intangible Assets, Net Indefinite-lived Intangible Assets (Excluding Goodwill) Indefinite-lived Intangible Assets (Excluding Goodwill) Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) Impairment of Intangible Assets (Excluding Goodwill) Impairment of Intangible Assets (Excluding Goodwill) Indefinite Lived Identifiable Intangible Assets, Foreign Currency Translation Adjustments Indefinite Lived Identifiable Intangible Assets, Foreign Currency Translation Adjustments Indefinite Lived Identifiable Intangible Assets, Foreign Currency Translation Adjustments 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 goodwill attributable to each business segment Schedule of Goodwill [Table Text Block] Schedule of finite lived intangible assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Schedule of estimated future amortization expense for identifiable intangible assets Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Statement of Comprehensive Income [Abstract] Tax (benefit) expense on marketable securities Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax Tax expense (benefit) on foreign currency hedge Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax Commitments and Contingencies Disclosure [Abstract] Commitments and Contingent Liabilities Commitments and Contingencies Disclosure [Text Block] Operating lease assets Operating lease liabilities Operating Lease, Liability Segment Reporting [Abstract] Segment Information Segment Reporting Disclosure [Text Block] Earnings Per Share [Abstract] Earnings Per Share Earnings Per Share [Text Block] Statement of Cash Flows [Abstract] Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net earnings 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 Share-based Payment Arrangement, Noncash Expense Deferred income taxes Deferred Income Tax Expense (Benefit) 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 Noncash lease expense Finance Lease, Right-of-Use Asset, Amortization 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 Cost in Excess of Billing on Uncompleted Contract Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Billings on contracts in excess of costs and earnings Increase (Decrease) in Billing in Excess of Cost of Earnings Refundable and accrued income taxes Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable Other Increase (Decrease) in Other Operating Assets and Liabilities, Net Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Capital expenditures Payments to Acquire Property, Plant, and Equipment Proceeds from sales of property, plant and equipment Proceeds from Sale of 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 Other Payments for (Proceeds from) Other Investing Activities Net cash used by 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 Long-term Lines of Credit Proceeds from issuance of term debt Proceeds from Issuance of Debt Payments on line of credit Repayments of Long-term 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 Proceeds from (Payments for) Other Financing Activities Net cash used by financing activities Net Cash Provided by (Used in) Financing Activities (Decrease) increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Effect of exchange rates on cash Effect of Exchange Rate on Cash and 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 Number of Reportable Segments Number of Reportable Segments Number of Operating Segments Number of Operating Segments Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] 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] Recognized over time Transferred over Time [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Total Revenue from Contract with Customer, Excluding Assessed Tax 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 Claims paid Extended Product Warranty Accrual, Decrease for Payments Acquired reserves Extended Product Warranty Accrual, Additions from Business Acquisition Balance at end of period Revenue, Receivables and Contract Assets and Liabilities Revenue from Contract with Customer [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 Number of Shares Outstanding, Basic 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 Weighted Average Number of Shares Outstanding, Diluted Stock awards excluded from the calculation of earnings per share because the effect was anti-dilutive (award price greater than average market price of the shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Remainder of Fiscal 2020 Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year Fiscal 2021 Lessee, Operating Lease, Liability, Payments, Due Year Two Fiscal 2022 Lessee, Operating Lease, Liability, Payments, Due Year Three Fiscal 2023 Lessee, Operating Lease, Liability, Payments, Due Year Four Fiscal 2024 Lessee, Operating Lease, Liability, Payments, Due Year Five Fiscal 2025 Lessee, Operating Lease, Liability, Payments, Due Year Six Lessee, Operating Lease, Liability, Payments, Due Year Six Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Six Lessee, Operating Lease, Liability, Payments, Due after Year Six Total lease payments Lessee, Operating Lease, Liability, Payments, Due Less: Amounts representing interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Present value of lease liabilities 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, Weighted Average Grant Date Fair Value [Roll Forward] 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 Tax expense (benefit) on marketable securities Tax expense (benefit) on foreign currency hedge 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 Retirement Benefits [Abstract] Components of net periodic benefit cost Schedule of Net Benefit Costs [Table Text Block] Share-Based Compensation Share-based Payment Arrangement [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 amortized cost and estimated fair values of investments by contractual maturity Investments Classified by Contractual Maturity Date [Table Text Block] Fair value measurements Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Contract assets Contract with Customer, Asset, after Allowance for Credit Loss Contract liabilities Contract with Customer, Liability Income Statement [Abstract] Net sales 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) Interest and other expense, net Interest Expense Earnings before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax expense Income Tax Expense (Benefit) Net earnings Earnings per share - basic Earnings Per Share, Basic [Abstract] Earnings per share - basic Earnings Per Share, Basic Earnings per share - diluted Earnings Per Share, Diluted [Abstract] Earnings per share - diluted Earnings Per Share, Diluted Weighted average basic shares outstanding Weighted average diluted shares outstanding Other comprehensive (loss) earnings: Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Unrealized gain (loss) on derivative instruments, net of $119, $10, $146 and ($99) of tax expense (benefit), respectively Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, before Tax 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 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 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 Sales and operating income data Schedule of Segment Reporting Information, by Segment [Table Text Block] Inventory Disclosure [Abstract] Supplemental Balance Sheet Information Inventory Disclosure [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 Number of defined-benefit pension plans Number Of Defined Benefit Pension Plans Number Of Defined Benefit Pension Plans 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) 2020 Operating Leases, Future Minimum Payments Due, Next Twelve Months 2021 Operating Leases, Future Minimum Payments, Due in Two Years 2022 Operating Leases, Future Minimum Payments, Due in Three Years 2023 Operating Leases, Future Minimum Payments, Due in Four Years 2024 Operating Leases, Future Minimum Payments, Due in Five Years Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due Income Taxes Income Tax Disclosure [Text Block] Commitments and Contingent Liabilities [Abstract] Commitments and Contingent Liabilities [Abstract] Income Tax Contingency [Table] Income Tax Contingency [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] Income Tax Contingency [Line Items] Income Tax Contingency [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 Percentage of voting interests acquired Business Acquisition, Percentage of Voting Interests Acquired Debt payment to acquire business Debt payment to acquire business Debt payment to acquire business Payable installment Debt Instrument, Periodic Payment Payment period Debt Instrument, Term Sales Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Operating income Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Warranties Product Warranty Accrual, Current Accrued project losses Acquired Contract Liabilities, Current Acquired Contract Liabilities, Current Property and other taxes Accrual for Taxes Other than Income Taxes, Current Accrued self-insurance reserves Accrued Insurance, Current Other Additional Other Liabilities, Current Additional Other Liabilities, Current Total other current liabilities Other Liabilities, Current 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] Award Type [Domain] Restricted Stock [Member] Restricted Stock [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Payment Arrangement, Noncash Expense 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 Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Weighted average period, Nonvested Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 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 Inventory, Net Operating lease cost Operating Lease, Cost Short-term lease cost Short-term Lease, Cost Variable lease cost Variable Lease, Cost Total lease cost Lease, Cost Face value of performance bonds Debt Instrument, Face Amount Companies Backlog Related to Sales Companies Backlog Related to Sales Companies backlog related to sales. Project related liability Project Related Liability Project Related Liability Project Related Liability QTD Project Related Liability QTD Project Related Liability recorded in the quarter Insurance receivable Insurance Settlements Receivable Purchase obligations Purchase Obligation Employee Benefit Plans Pension and Other Postretirement Benefits Disclosure [Text Block] Financial Instruments Marketable Securities [Table Text Block] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Municipal and Corporate Bonds Municipal and Corporate Bonds [Member] Municipal and Corporate Bonds [Member] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Amortized Cost Gross Unrealized Gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Estimated Fair Value Deferred benefit from New Market 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 Guarantees and warranties Schedule of Product Warranty Liability [Table Text Block] Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Axis] Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Axis] Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Domain] Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation [Domain] Deferred Compensation, Share-based Payments [Member] Deferred Compensation, Share-based Payments [Member] 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 Outstanding, Ending Award transactions on stock options, Weighted Average Exercise Price [Roll Forward] 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 remaining contractual life, Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Aggregate intrinsic value, Outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Prepaid assets Prepaid Expense, Current Refundable income taxes Income Taxes Receivable Other Other Assets, Miscellaneous, Current Total other current assets Other Assets, Current Leases Lessee, Operating Leases [Text Block] Net sales Business Acquisition, Pro Forma Revenue Net earnings Business Acquisition, Pro Forma Net Income (Loss) Earnings per share Business Acquisition, Pro Forma Information [Abstract] 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 Acquisition Business Combination Disclosure [Text Block] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Number of shares repurchased during period (in shares) Stock Repurchased During Period, Shares Value of shares repurchased during period Stock Repurchased During Period, Value 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] Schedule Of Goodwill [Table] Schedule of Goodwill [Table] Statement Business Segments [Axis] Segments [Axis] Segment [Domain] Segments [Domain] Architectural Glass Architectural [Member] Architectural. Architectural Framing Systems Architectural Framing Segment [Member] Architectural Framing Segment [Member] Architectural Services Architectural Services segment [Member] Architectural Services segment [Member] 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, Purchase Accounting Adjustments Foreign currency translation Goodwill, Foreign Currency Translation Gain (Loss) Goodwill, Ending Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Related party Affiliated Entity [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Lease cost Lease payments Operating lease liabilities, leases not yet commenced Lessee, Operating Lease, Lease Not Yet Commenced, Undiscounted Amount Lessee, Operating Lease, Lease Not Yet Commenced, Undiscounted Amount Lease term, leases not yet commenced Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract Reconciliation of basic and diluted earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Goodwill and Other Identifiable Intangible Assets (Textual) [Abstract] Goodwill and Other Identifiable Intangible Assets (Textual) [Abstract] Goodwill and other identifiable intangible assets. Amortization expense on identifiable intangible assets Amortization of Intangible Assets Impact of new accounting guidance Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, 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 Municipal and corporate bonds Short-term Investments, Municipal And Corporate Bonds Short-term Investments, Municipal And Corporate Bonds Foreign currency forward/option contract Derivative, Fair Value, Net Interest rate swap contract Interest Rate Derivative Liabilities, at Fair Value 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, after Allowance for Credit Loss, Current Inventories Costs and earnings on contracts in excess of billings Costs in Excess of Billings Other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property, plant and equipment, net Property, Plant and Equipment, Net Goodwill Intangible assets Other non-current assets Other Assets, Noncurrent Total assets 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 Billings on contracts in excess of costs and earnings Billings in Excess of Cost Operating lease liabilities Operating Lease, Liability, Current Current portion of debt Debt, Current Other current liabilities Total current liabilities Liabilities, Current Long-term debt Long-term Debt, Excluding Current Maturities Non-current operating lease liabilities Operating Lease, Liability, Noncurrent Non-current self-insurance reserves Self Insurance Reserve, Noncurrent Other non-current liabilities Other Liabilities, Noncurrent Commitments and contingent liabilities (Note 8) 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 26,552,935 and 27,015,127 respectively Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Retained earnings Retained Earnings (Accumulated Deficit) Common stock held in trust Common Stock Issued, Employee Stock Trust Deferred compensation obligations Compensation and Benefits Trust Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total shareholders’ equity Total liabilities and shareholders’ equity Liabilities and Equity Revenue recognized related to contract liabilities from prior year-end Contract with Customer, Liability, Revenue Recognized Revenue recognized related to prior satisfaction of performance obligations Contract with Customer, Performance Obligation Satisfied in Previous Period Transaction price associated with unsatisfied performance obligations Goodwill and Other Identifiable Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Cover page. Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Central Index Key Entity Central Index Key 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 Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Intersegment eliminations Intersegment Eliminations [Member] Corporate and other Corporate and Other [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Sales and operating income data Segment Reporting Information, Profit (Loss) [Abstract] Net sales Operating income (loss) Components of inventories Schedule of Inventory, Current [Table Text Block] Other current assets Schedule of Other Current Assets [Table Text Block] Other current liabilities Other Current Liabilities [Table Text Block] Other non-current liabilities Other Noncurrent Liabilities [Table Text Block]