Accounting Policies [Abstract] Disaggregation of Revenue [Table Text Block] Disaggregation of Revenue [Table Text Block] Debt [Abstract] Debt [Abstract] Schedule of Debt [Table Text Block] Schedule of Debt [Table Text Block] Product Warranties Disclosures [Abstract] Movement in Standard Product Warranty Accrual [Roll Forward] Movement in Standard Product Warranty Accrual [Roll Forward] Opening Balance Standard and Extended Product Warranty Accrual Warranty costs incurred Product Warranty Expense Closing Balance Product Warranty Accrual, Warranties Issued Standard and Extended Product Warranty Accrual, Increase for Warranties Issued Revenue from Contract with Customer [Abstract] Revenue, Initial Application Period Cumulative Effect Transition [Table] Revenue, Initial Application Period Cumulative Effect Transition [Table] 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] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Contract with Customer, Liability, Revenue Recognized Contract with Customer, Liability, Revenue Recognized Future Revenues Future Revenues Future Revenues Revenue, Remaining Performance Obligation Revenue, Remaining Performance Obligation Significant Accounting Policies [Text Block] Significant Accounting Policies [Text Block] Share-based Compensation [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] Restricted Stock Units (RSUs) [Member] Restricted Stock Units (RSUs) [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 Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Non-vested balance as of February 28, 2018 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Non-vested balance as of November 30, 2018 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, 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] Non-vested balance as of February 28, 2018 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted, Weighted Average Grant Date Fair Value (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested, Weighted Average Grant Date Fair Value (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited, Weighted Average Grant Date Fair Value (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Non-vested balance as of November 30, 2018 Document and Entity Information [Abstract] Document and entity information. Entity Registrant Name Entity Registrant Name 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 Revenue Recognition Revenue Recognition, Policy [Policy Text Block] Restricted Stock [Member] Restricted Stock [Member] Performance Shares [Member] Performance Shares [Member] Stock Appreciation Rights (SARs) [Member] Stock Appreciation Rights (SARs) [Member] Employee Stock [Member] Employee Stock [Member] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Share Based Compensation (Textual) [Abstract] Share Based Compensation (Textual) [Abstract] Share based compensation. Number Of Share-Based Compensation Plans Number Of Share-Based Compensation Plans Number Of Share-Based Compensation Plans Shares authorized (shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Share for future issuance (shares) Common Stock, Capital Shares Reserved for Future Issuance Vesting ratably term Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Term for the contract Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Outstanding Average contractual term Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Outstanding Aggregate intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Average remaining contractual term Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Aggregate remaining intrinsic value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Term of offering under stock purchase plan Term of Offering under Stock Purchase Plan Term of offering under stock purchase plan. Granted option lower than Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent Restricted common stock under plan Maximum Value of Common Stock Participants Have Rights to Purchase Maximum value of common stock participants have rights to purchase. Common stock purchased during period (shares) Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee Unrecognized compensation cost Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Share-based Compensation Arrangement, By Share-based Payment Award, Common Shares Estimated To Be Issued Share-based Compensation Arrangement, By Share-based Payment Award, Common Shares Estimated To Be Issued Share-based Compensation Arrangement, By Share-based Payment Award, Common Shares Estimated To Be Issued Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Treasury Stock, Shares, Acquired Treasury Stock, Shares, Acquired Treasury Stock Acquired, Average Cost Per Share Treasury Stock Acquired, Average Cost Per Share Share-based Compensation Share-based Compensation Share based compensation expense and related income tax benefits Employee Service Share-based Compensation, Aggregate Disclosures [Abstract] Compensation Expense Allocated Share-based Compensation Expense Income tax benefits Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Statement of Cash Flows [Abstract] Cash Flows From Operating Activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income (loss) Net Income (Loss) Attributable to Parent Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Provision for doubtful accounts Provision for Doubtful Accounts Amortization and depreciation Depreciation, Depletion and Amortization, Nonproduction Deferred income taxes Deferred Income Tax Expense (Benefit) Net loss on property, plant and equipment due to impairment Gain (Loss) on Disposition of Assets Net loss (gain) on sale of property, plant and equipment Gain (Loss) on Disposition of Property Plant Equipment Amortization of deferred borrowing costs Amortization of Debt Issuance Costs Share-based compensation expense Effects of changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Prepaid expenses and other Increase (Decrease) in Prepaid Expense and Other Assets Other assets Increase (Decrease) in Other Operating Assets Net change in contract assets and liabilities Increase (Decrease) in Billing in Excess of Cost of Earnings Accounts payable Increase (Decrease) in Accounts Payable Other accrued liabilities and income taxes payable Increase (Decrease) in Other Operating Liabilities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash Flows Used For Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Proceeds from sale of property, plant and equipment Proceeds from Sale of Property, Plant, and Equipment Purchase of Property, Plant and Equipment Payments to Acquire Property, Plant, and Equipment Acquisition of Subsidiaries, Net of Cash Acquired Payments to Acquire Businesses, Net of Cash Acquired Net Cash From Investing Activities Net Cash Provided by (Used in) Investing Activities Cash Flows From Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Excess Tax Benefits From Stock Options and Stock Appreciation Rights Excess Tax Benefit from Share-based Compensation, Financing Activities Proceeds from revolving loan Proceeds from Lines of Credit Payments on revolving loan Repayments of Lines of Credit Proceeds on Long Term Debt Proceeds from Issuance of Long-term Debt Payments on Long Term Debt Repayments of Long-term Debt Payments for Repurchase of Common Stock Payments for Repurchase of Common Stock Payments of Dividends Payments of Dividends Net Cash Used In Financing Activities Net Cash Provided by (Used in) Financing Activities Effect of Exchange Rate Changes on Cash Effect of Exchange Rate on Cash and Cash Equivalents Net Increase (Decrease) In Cash & Cash Equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash & Cash Equivalents At Beginning of Period Cash and Cash Equivalents, at Carrying Value Cash & Cash Equivalents At End of Period Supplemental Disclosures Supplemental Cash Flow Information [Abstract] Cash Paid For Interest Interest Paid Cash Paid For Income Taxes Income Taxes Paid Earnings Per Share [Abstract] Earnings Per Share Earnings Per Share [Text Block] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Award Date [Axis] Award Date [Axis] Award Date [Domain] Award Date [Domain] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Share-based Compensation, Performance Shares Award Unvested Activity [Table Text Block] Schedule of Nonvested Performance-based Units Activity [Table Text Block] Restricted Stock Unit Awards Non-Vested Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] Stock Appreciation Rights and Option Awards Schedule of Share-based Compensation, Stock Options and Stock Appreciation Rights Award Activity [Table Text Block] Share-based compensation expense and related income tax Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Line of Credit [Member] Line of Credit [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Senior Notes [Member] Senior Notes [Member] Medium-term Notes [Member] Medium-term Notes [Member] Term Note [Member] Term Note [Member] Term Note [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Unsecured Senior Notes Due January 2021 [Member] Unsecured Senior Notes Due January 2021 [Member] Unsecured Senior Notes Due January 2021 [Member] Unsecured Senior Notes Due March 2012 through March 2018 [Member] Unsecured Senior Notes Due March 2012 through March 2018 [Member] Unsecured Senior Notes Due March 2012 through March 2018 [Member] Term Not Due in Quarterly Installments Beginning in June 2013 through March 2018 [Member] Term Not Due in Quarterly Installments Beginning in June 2013 through March 2018 [Member] Term Note, due in quarterly installments beginning in June 2013 through March 2018 [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Axis] Debt Instrument, Redemption, Period [Domain] Debt Instrument, Redemption, Period [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Long-term Debt Long-term Debt Long-term Debt, Gross Long-term Debt, Gross Unamortized Debt Issuance Expense Unamortized Debt Issuance Expense Debt, Current Debt, Current Long-term Debt, Excluding Current Maturities Long-term Debt, Excluding Current Maturities Changes in the warranty reserves Schedule of Product Warranty Liability [Table Text Block] Statement of Financial Position [Abstract] Accounts Receivable, Allowance for Doubtful Accounts Allowance for Doubtful Accounts Receivable, Current Common Stock, Par Value (usd per share) Common Stock, Par or Stated Value Per Share Common Stock, Shares Authorized (shares) Common Stock, Shares Authorized Common Stock, Shares Issued (shares) Common Stock, Shares, Issued Common Stock, Shares, Outstanding Common Stock, Shares, Outstanding Organization, Consolidation and Presentation of Financial Statements [Abstract] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Disaggregation of Revenue [Abstract] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Industry [Axis] Industry [Axis] Industry [Axis] Industry [Domain] Industry [Domain] [Domain] for Industry [Axis] Industrial [Member] Industrial [Member] Industrial [Member] Trasmission & Distribution [Member] Trasmission & Distribution [Member] Trasmission & Distribution [Member] Power Generation [Member] Power Generation [Member] Power Generation [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Revenue, Net Revenue, Net Segment Reporting [Abstract] Segments Segment Reporting Disclosure [Text Block] Segment [Abstract] Segment [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Subsegments [Axis] Subsegments [Axis] Subsegments [Domain] Subsegments [Domain] Subsegments Consolidation Items [Axis] Subsegments Consolidation Items [Axis] Subsegments Consolidation Items [Domain] Subsegments Consolidation Items [Domain] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Schedule of Segment Reporting Information, by Segment [Table Text Block] Schedule of Segment Reporting Information, by Segment [Table Text Block] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Reconciliation of Assets from Segment to Consolidated [Table Text Block] Reconciliation of Assets from Segment to Consolidated [Table Text Block] Revenue from External Customers by Geographic Areas [Table Text Block] Revenue from External Customers by Geographic Areas [Table Text Block] Long-lived Assets by Geographic Areas [Table Text Block] Long-lived Assets by Geographic Areas [Table Text Block] Stock-based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] New Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Computation of basic and diluted earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Income Statement [Abstract] Net sales Costs and Expenses Operating Costs and Expenses [Abstract] Cost of sales Cost of Goods Sold Gross margin Gross Profit Selling, general and administrative Selling, General and Administrative Expense Operating income Operating Income (Loss) Interest expense Interest Expense Other (income) expense, net Other Nonoperating Income (Expense) Income (loss) before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax expense (benefit) Income Tax Expense (Benefit) Net income (loss) Earnings Per Common Share Basic Earnings Per Share (usd per share) Earnings Per Share, Basic Diluted Earnings Per Share (usd per share) Earnings Per Share, Diluted Common Stock, Dividends, Per Share, Declared Common Stock, Dividends, Per Share, Declared Business Combinations [Abstract] Business Combination Disclosure [Text Block] Business Combination Disclosure [Text Block] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] UNITED STATES UNITED STATES CANADA CANADA Other Countries [Member] Other Countries [Member] Other Countries [Member] International [Member] International [Member] International [Member] Geography Eliminations [Member] Geography Eliminations [Member] Energy Energy [Member] Energy Metal Coatings Metal Coatings [Member] Metal Coatings [Member] Corporate Corporate, Non-Segment [Member] Corporate Corporate Segment [Member] Property, Plant and Equipment, Net Property, Plant and Equipment, Net Number of operating segments Number of Operating Segments Operations and assets by segment Operations and Assets by Segment [Abstract] Operations and assets by segment. Operating Income Assets Assets Statement of Comprehensive Income [Abstract] Interest rate swap, income tax Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax Assets Assets [Abstract] Current assets: Assets, Current [Abstract] Cash and cash equivalents Accounts receivable (net of allowance for doubtful accounts of $2,348 as of November 30, 2018 and $569 as of February 28, 2018) Accounts Receivable, Net, Current Inventories: Inventory, Net [Abstract] Raw material Inventory, Raw Materials, Gross Work-in-process Inventory, Work in Process, Gross Finished goods Inventory, Finished Goods, Gross Contract assets Contract with Customer, Asset, Net Prepaid expenses and other Prepaid Expense and Other Assets Total current assets Assets, Current Property, plant and equipment, net Goodwill Goodwill Intangibles and other assets, net Intangible Assets, Net (Excluding Goodwill) Total assets Liabilities and Shareholders’ Equity Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Income tax payable Accrued Income Taxes, Current Accrued salaries and wages Employee-related Liabilities, Current Other accrued liabilities Other Liabilities, Current Customer deposits Customer Advances, Current Contract liabilities Contract with Customer, Liability Debt due within one year Total current liabilities Liabilities, Current Debt due after one year, net Other long-term liabilities Other Liabilities, Noncurrent Deferred income taxes Deferred Tax Liabilities, Net, Noncurrent Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Shareholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock, $1 par, shares authorized 100,000; 26,087 shares issued and outstanding at November 30, 2018 and 25,959 shares issued and outstanding at February 28, 2018 Common Stock, Value, Issued Capital in excess of par value Additional Paid in Capital, Common Stock Retained earnings Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total shareholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and shareholders' equity Liabilities and Equity Statement of Stockholders' Equity - test [Abstract] Statement of Stockholders' Equity - test [Abstract] Statement [Table] Statement [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Report Date [Axis] Report Date [Axis] Financial Statement Filing Date [Domain] Financial Statement Filing Date [Domain] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock Common Stock [Member] Capital in Excess of Par Value Additional Paid-in Capital [Member] Retained Earnings Retained Earnings [Member] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Treasury Stock, Common [Member] Treasury Stock, Common [Member] Adjustments for Change in Accounting Principle [Axis] Adjustments for Change in Accounting Principle [Axis] Adjustments for Change in Accounting Principle [Domain] Adjustments for Change in Accounting Principle [Domain] Adjustments for Error Corrections [Axis] Adjustments for Error Corrections [Axis] Adjustments for Error Correction [Domain] Adjustments for Error Correction [Domain] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance (shares) Shares, Issued Balance Stock Compensation (shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Restricted Stock Units (shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross Stock Compensation Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Restricted Stock Units Stock Issued During Period, Value, Restricted Stock Award, Gross Stock Issued For Stock Appreciation Rights Stock Issued For Stock Appreciation Rights Stock Issued For Stock Appreciation Rights Employee Stock Purchase Plan (shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Stock Issued for Stock Appreciation Rights Shares Stock Issued for Stock Appreciation Rights Shares Stock issued for stock appreciation rights shares. Employee Stock Purchase Plan Stock Issued During Period, Value, Employee Stock Purchase Plan Treasury Stock, Shares, Retired Treasury Stock, Shares, Retired Treasury Stock, Common, Value Treasury Stock, Value, Acquired, Cost Method Treasury Stock, Retired, Par Value Method, Amount Treasury Stock, Retired, Par Value Method, Amount Cash Dividend Paid Dividends, Cash Foreign Currency Translation Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Interest rate swap Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax Balance (shares) Balance Computation of basic and diluted earnings per share Schedule of Earnings Per Share Basic and Diluted [Abstract] -- None. No documentation exists for this element. -- Numerator: Numerator [Abstract] -- None. No documentation exists for this element. -- Net income for basic and diluted earnings per common share Denominator: Denominator [Abstract] -- None. No documentation exists for this element. -- Denominator for basic earnings per common share-weighted average shares (shares) Weighted Average Number of Shares Outstanding, Basic Effect of dilutive securities: Dilutive Securities, Effect on Basic Earnings Per Share [Abstract] Employee and Director stock awards (shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Denominator for diluted earnings per common share (shares) Weighted Average Number of Shares Outstanding, Diluted Earnings per share basic and diluted: Basic and Diluted Earning Per Share [Abstract] -- None. No documentation exists for this element. -- Basic earnings per Common share (usd per share) Diluted earnings per common share (usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Number of Shares [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Number of Shares [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Number of Shares [Roll Forward] Granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercised (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Forfeited (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Outstanding as of November 30, 2018 Share Based Compensation Arrangement by Share Based Payment Award Options and Other than Option Outstanding Number Share based compensation arrangement by share based payment award options and other than option outstanding number. Exercisable as of November 30, 2018 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument, Weighted Average Grant Date Fair Value [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument, Weighted Average Grant Date Fair Value [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instrument, Weighted Average Grant Date Fair Value [Roll Forward] Granted, Weighted Average Exercise Price (usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercised, Weighted Average Exercise Price (usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Forfeited, Weighted Average Exercise Price (usd per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Outstanding as of November 30, 2018 Share Based Compensation Arrangement by Share Based Payment Award Options and Other than Option Outstanding Weighted Average Exercise Price Share based compensation arrangement by share based payment award options and other than option outstanding weighted average exercise price. Exercisable as of November 30, 2018 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Weighted average fair value of options and SARs granted during the period ended Share Based Compensation Arrangement by Share Based Payment Award Options and Other than Option Grants in Period Weighted Average Grant Date Fair Value Share based compensation arrangement by share based payment award options and other than option grants in period weighted average grant date fair value. Other comprehensive income (loss): Other Comprehensive Income (Loss), Net of Tax [Abstract] Foreign currency translation adjustments, net of income tax of $0 Interest rate swap, net of income tax of $7, $7, $22 and $22, respectively. Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Warranty Reserves Product Warranty Disclosure [Text Block] Long-term Debt [Text Block] Long-term Debt [Text Block]