Statement of Cash Flows [Abstract] Cash flows from operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net loss Net Income (Loss) Attributable to Parent Adjustments to reconcile net loss to net cash used in operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Amortization of debt costs Amortization of Debt Issuance Costs Share-based compensation Share-based Compensation Equity in net loss (income) of affiliate Income (Loss) from Equity Method Investments Loss on disposal of fixed assets Gain (Loss) on Disposition of Assets Deferred taxes Deferred Income Tax Expense (Benefit) Amortization of deferred actuarial pension losses Defined Benefit Plan, Amortization of Deferred Gains (Losses) Defined Benefit Plan, Amortization of Deferred Gains (Losses) Unrealized loss on foreign currency hedges Foreign Currency Transaction Gain (Loss), Unrealized Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Inventories Increase (Decrease) in Inventories Other assets Increase (Decrease) in Other Operating Assets Accounts payable Increase (Decrease) in Accounts Payable Accrued expenses, pension and other liabilities Increase (Decrease) in Accrued Liabilities Total adjustments Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities Total cash used in operating activities Net Cash Provided by (Used in) Operating Activities Cash flows from investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash paid for fixed assets Payments to Acquire Productive Assets Total cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Borrowings under the revolving credit facility Proceeds from (Repayments of) Lines of Credit Borrowings under the senior term loan Proceeds from Issuance of Senior Long-term Debt Repayments under the senior term loan Repayments of Medium-term Notes Cash paid for capital leases Repayments of Long-term Capital Lease Obligations Payment of dividends on preferred stock Payments of Dividends Cash paid for employee taxes on vested restricted shares and stock option exercises Payments Related to Tax Withholding for Share-based Compensation Proceeds from exercises of warrants Proceeds from Warrant Exercises Common stock repurchases under share repurchase programs Payments for Repurchase of Common Stock Tender offer repurchase of common stock and preferred stock Repurchase Of Common Stock And Preferred Stock Repurchase Of Common Stock And Preferred Stock Total cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Change in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents, beginning of period Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents, end of period Supplemental disclosures of cash flow information Supplemental Cash Flow Information [Abstract] Interest paid, net of interest received Interest Paid, Excluding Capitalized Interest, Operating Activities Income tax paid, net of tax refunds Income Taxes Paid, Net Non-cash investing and financing activities: Noncash Investing and Financing Items [Abstract] Change in accounts payable for capital additions to property, plant and equipment Increase (Decrease) Capital Expenditures Incurred but Not Yet Paid Increase (Decrease) Capital Expenditures Incurred but Not Yet Paid Right-of-use assets obtained in exchange for operating lease obligations Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Conversion of preferred stock into common stock Conversion of Stock, Amount Converted Statement of Financial Position [Abstract] Preferred Stock, Par Value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred Stock, Shares Authorized Preferred Stock, Shares Authorized Preferred Stock, Shares Issued Preferred Stock, Shares Issued Preferred Stock, Liquidation Preference, Value Preferred Stock, Liquidation Preference, Value Common Stock, Par Value (in dollars per share) Common Stock, Par or Stated Value Per Share Common Stock, Shares Authorized Common Stock, Shares Authorized Common Stock, Shares Outstanding Common Stock, Shares, Outstanding Treasury Stock, Common, Shares Treasury Stock, Common, Shares Revenue from Contract with Customer [Abstract] Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Equity [Abstract] Accumulated Other Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Income Statement [Abstract] Net sales Revenue from Contract with Customer, Excluding Assessed Tax Cost of goods sold Cost of Revenue Gross profit Gross Profit Operating expenses Operating Expenses [Abstract] Selling, general and administrative expenses Selling, General and Administrative Expense Operating profit (loss) Operating Income (Loss) Interest expense Interest Expense Interest income Investment Income, Interest Other expense, net Other Nonoperating Income (Expense) Loss before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income tax benefit (expense) Income Tax Expense (Benefit) Equity in net (loss) income of non-consolidated affiliate Net loss Earnings per share: Earnings Per Share, Basic and Diluted [Abstract] Net loss (from above) Less: preferred stock dividends Preferred Stock Dividends, Income Statement Impact Net loss available to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Basic weighted average shares outstanding Weighted Average Number of Shares Outstanding, Basic Diluted weighted average shares outstanding Weighted Average Number of Shares Outstanding, Diluted Basic earnings (loss) per share (in dollars per share) Earnings Per Share, Basic Diluted earnings (loss) per share (in dollars per share) Earnings Per Share, Diluted Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Revenue from Contract with Customer Revenue from Contract with Customer [Text Block] Earnings Per Share [Abstract] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Options Employee Stock Option [Member] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Less: convertible preferred stock dividends Weighted average common shares outstanding (in shares) Basic earnings per share (in dollars per share) Diluted earnings per share (in dollars per share) Condensed Financial Information [Abstract] Condensed Financial Information [Abstract] Product Warranty Liability [Table] Product Warranty Liability [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Product Warranty Liability [Line Items] Product Warranty Liability [Line Items] Extended product warranty, period Extended Product Warranty, Period Extended Product Warranty, Period Shipping and handling revenues Shipping and Handling Revenue1 Shipping and Handling Revenue1 Shipping and handling cost of goods sold Shipping Handling And Transportation Costs1 Shipping Handling And Transportation Costs1 Warrants outstanding (in shares) Class of Warrant or Right, Outstanding Common stock shares that may be called by warrants (in shares) Class of Warrant or Right, Number of Securities Called by Warrants or Rights Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2014-09 Accounting Standards Update 2014-09 [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] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Diesel buses Diesel Buses [Member] Diesel Buses [Member] Alternative Fuel Buses Alternative Fuel Buses [Member] Alternative Fuel Buses [Member] Other Product and Service, Other [Member] Parts Parts [Member] Parts [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Accrued liabilities Accrued Liabilities Deferred tax assets Deferred Tax Assets, Net Adoption of new revenue recognition standard (ASC 606) adjustment Cumulative Effect of New Accounting Principle in Period of Adoption 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] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Expected Volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Dividend Yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Risk-Free Interest Rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Expected Term Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Weighted-average grant date fair value of an option award granted in period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Option, Nonvested, Weighted Average Exercise Price Interest cost Defined Benefit Plan, Interest Cost Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Amortization of prior loss Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Amortization of prior loss, recognized in other comprehensive income Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax Total recognized in net periodic pension benefit cost and other comprehensive income Defined Benefit Plan, Amount Recognized in Net Periodic Benefit Cost (Credit) and Other Comprehensive (Income) Loss, before Tax New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Accounting Standards Update 2017-07 Accounting Standards Update 2017-07 [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Selling, general and administrative expenses Other expense, net Segment Reporting [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] Operating Segments Operating Segments [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] United States UNITED STATES Canada CANADA Rest of world Rest of World [Member] Rest of World [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Bus Bus [Member] Bus [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Number of Operating Segments Number of Operating Segments Gross profit Movement in Standard Product Warranty Accrual [Roll Forward] Movement in Standard Product Warranty Accrual [Roll Forward] Balance at beginning of period Standard Product Warranty Accrual Add current period accruals Standard Product Warranty Accrual, Increase for Warranties Issued Current period reductions of accrual Standard Product Warranty Accrual, Period Increase (Decrease) Balance at end of period Derivative [Table] Derivative [Table] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Cash Flow Hedge Cash Flow Hedging [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Foreign Exchange Contract Foreign Exchange Contract [Member] Derivative [Line Items] Derivative [Line Items] Interest rate collar Derivative, Cap Interest Rate, Term Derivative, Cap Interest Rate, Term Derivative, notional amount Derivative, Notional Amount Floor interest rate Derivative, Floor Interest Rate Ceiling interest rate Derivative, Cap Interest Rate Fair value of interest rate contract Derivative, Fair Value, Net Reclassification from AOCI, Current Period, Tax [Abstract] Reclassification from AOCI, Current Period, Tax [Abstract] Amount recognized in AOCI on derivatives (effective portion) Other Comprehensive Income (Loss), before Reclassifications, before Tax Amount reclassified from AOCI into income (effective portion) Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Total amount recognized in other comprehensive loss Other Comprehensive Income (Loss), before Tax, Portion Attributable to Parent Reclassification of Cash Flow Hedge Gain (Loss) [Abstract] Reclassification of Cash Flow Hedge Gain (Loss) [Abstract] Amount recognized in AOCI on derivatives (effective portion) Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Amount reclassified from AOCI into income (effective portion) Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Total amount recognized in other comprehensive (loss) income Gain (Loss) on Components Excluded from Assessment of Foreign Currency Cash Flow Hedge Effectiveness Reclassification adjustment from AOCI on derivatives Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Current portion Self Insurance Reserve, Current Long-term portion Self Insurance Reserve, Noncurrent Total accrued self-insurance Self Insurance Reserve Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table] Segment Reconciling Items Segment Reconciling Items [Member] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] Segment gross profit Selling, general and administrative expenses Commitments and Contingencies Disclosure [Abstract] Schedule of Maturities of Operating Leases (Lessee) Lessee, Operating Lease, Liability, Maturity [Table Text Block] Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Outstanding options, beginning of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Options Forfeited, Number of Shares Outstanding options, end of period (in shares) Fully vested and exercisable options, end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number Weighted Average Exercise Price per Share Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Outstanding options, beginning of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Outstanding options, end of period (in dollars per share) Fully vested and exercisable options, end of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price Outstanding options, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Fully vested and exercisable options, end of period, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value Fully vested and exercisable options, end of period, Weighted Average Contractual Remaining Term Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term Share-based compensation Allocated Share-based Compensation Expense Excess tax benefit Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount Unrecognized compensation cost Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Period for recognition of unrecognized compensation costs Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Total AOCI AOCI Attributable to Parent [Member] Defined Benefit Pension Plan Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Cash Flow Hedges (Effective Portion) Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Beginning Balance Stockholders' Equity Attributable to Parent Other comprehensive income (loss), gross Amounts reclassified from other comprehensive income and included in earnings Income tax expense Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent Ending Balance Debt Disclosure [Abstract] Long-term Debt, Fiscal Year Maturity Long-term Debt, Fiscal Year Maturity [Abstract] 2019 Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 2020 Long-term Debt, Maturities, Repayments of Principal in Year Two 2021 Long-term Debt, Maturities, Repayments of Principal in Year Three 2022 Long-term Debt, Maturities, Repayments of Principal in Year Four 2023 Long-term Debt, Maturities, Repayments of Principal in Year Five Total debt Long-term Debt, Gross Debt Debt Disclosure [Text Block] Supplemental Financial Information Additional Financial Information Disclosure [Text Block] Derivative Instruments Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Effective tax rate (as a percent) Effective Income Tax Rate Reconciliation, Percent Statutory Federal income tax rate (as a percent) Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Income tax expense to reflect U.S. Tax reform Tax Cuts and Jobs Act of 2017,Measurement Period Adjustment,Income Tax Expense (Benefit) Tax Cuts and Jobs Act of 2017,Measurement Period Adjustment,Income Tax Expense (Benefit) Increase in uncertain tax position Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Unrecognized Tax Benefit, Provisional Income Tax (Expense) Benefit Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Unrecognized Tax Benefit, Provisional Income Tax (Expense) Benefit Additional valuation allowance Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred Tax Assets, Increase (Decrease) in Valuation Allowance Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred Tax Assets, Increase (Decrease) in Valuation Allowance Effective tax rate, without adjustments from U.S. Tax reform Tax Cuts and Jobs Act of 2017,Measurement Period Adjustment, Effective Tax Rate Tax Cuts and Jobs Act of 2017,Measurement Period Adjustment, Effective Tax Rate Document and Entity Information [Abstract] Document and Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Document Type Document Type Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Entity Ex Transition Period Entity Ex Transition Period Accounting Policies [Abstract] Revenue, Initial Application Period Cumulative Effect Transition [Table] Revenue, Initial Application Period Cumulative Effect Transition [Table] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Operating lease, right-of-use asset Operating Lease, Right-of-Use Asset Operating lease, liability Operating Lease, Liability Movement in Extended Product Warranty Accrual [Roll Forward] Movement in Extended Product Warranty Accrual [Roll Forward] Balance at beginning of period Contract with Customer, Liability Add current period deferred income Deferred Revenue, Additions Current period recognition of income Deferred Revenue, Revenue Recognized Balance at end of period Organization, Consolidation and Presentation of Financial Statements [Abstract] Convertible preferred stock, shares issued upon conversion (in shares) Convertible Preferred Stock, Shares Issued upon Conversion Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Senior Term Loan Senior Notes [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 2021 Term Loan Term Loan Facility [Member] Term Loan Facility [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Total debt Long-term Debt Current portion of long-term debt Long-term Debt, Current Maturities Long-term debt Long-term Debt, Excluding Current Maturities Deferred financing costs Debt Instrument, Unamortized Discount 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] Revenue, remaining performance obligation Revenue, Remaining Performance Obligation, Amount Revenue, performance obligation, (in years) Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Assets Assets [Abstract] Current assets Assets, Current [Abstract] Cash and cash equivalents Accounts receivable, net Accounts Receivable, Net, Current Inventories Inventory, Net Other current assets Other Assets, Current Total current assets Assets, Current Property, plant and equipment, net Property, Plant and Equipment, Net Goodwill Goodwill Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Equity investment in affiliate Equity Method Investments Deferred tax assets Deferred Income Tax Assets, Net Other assets Other Assets, Noncurrent Total assets Assets Liabilities and Stockholders' Deficit Liabilities and Equity [Abstract] Current liabilities Liabilities, Current [Abstract] Accounts payable Accounts Payable, Current Warranty Product Warranty Accrual, Current Accrued expenses Accrued Liabilities, Excluding Product Warranty Accrual Current Accrued Liabilities, Excluding Product Warranty Accrual Current Deferred warranty income Deferred Revenue, Current Other current liabilities Other Liabilities, Current Total current liabilities Liabilities, Current Long-term liabilities Liabilities, Noncurrent [Abstract] Revolving credit facility Long-term Line of Credit, Noncurrent Warranty Product Warranty Accrual, Noncurrent Deferred warranty income Deferred Revenue, Noncurrent Other liabilities Other Liabilities, Noncurrent Pension Liability, Defined Benefit Plan, Noncurrent Total long-term liabilities Liabilities, Noncurrent Guarantees, commitments and contingencies (Note 6) Commitments and Contingencies Stockholders' deficit Stockholders' Equity Attributable to Parent [Abstract] Preferred stock, $0.0001 par value, 10,000,000 shares authorized, 0 and 93,000 issued with liquidation preference of $0 and $9,300 at December 29, 2018 and September 29, 2018, respectively Preferred Stock, Value, Outstanding Common stock, $0.0001 par value, 100,000,000 shares authorized, 26,351,588 and 27,259,262 shares outstanding at December 29, 2018 and September 29, 2018, respectively Common Stock, Value, Outstanding Additional paid-in capital Additional Paid in Capital Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Treasury stock, at cost, 1,782,568 and 0 shares at December 29, 2018 and September 29, 2018, respectively Treasury Stock, Value Total stockholders' deficit Total liabilities and stockholders' deficit Liabilities and Equity Earnings Per Share Earnings Per Share [Text Block] Inventories Schedule of Inventory, Current [Table Text Block] Product Warranties Schedule of Product Warranty Liability [Table Text Block] Self-Insurance Schedule of Self Insurance Reserve [Table Text Block] Schedule of Self Insurance Reserve [Table Text Block] Pension Expense Schedule of Defined Benefit Plans Disclosures [Table Text Block] Summary of Significant Accounting Policies and Recently Issued Accounting Standards Significant Accounting Policies [Text Block] Schedule of Previously Reported Results of Operations Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Guarantees, Commitments and Contingencies Commitments Contingencies and Guarantees [Text Block] Anti-dilutive securities excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Schedule of Term Debt Instruments Schedule of Long-term Debt Instruments [Table Text Block] Schedule of Maturities of Long-term Debt Schedule of Maturities of Long-term Debt [Table Text Block] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Use of Estimates and Assumptions Use of Estimates, Policy [Policy Text Block] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Leases Short-term Leases [Policy Text Block] Derivative Instruments Derivatives, Methods of Accounting, Hedge Documentation [Policy Text Block] Statement of Cash Flows Equity Method Investments [Policy Text Block] Recently Issued Accounting Standards and Recently Adopted Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Segment Information Segment Reporting Disclosure [Text Block] 2019 Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months 2020 Lessee, Operating Lease, Liability, Payments, Due Year Two 2021 Lessee, Operating Lease, Liability, Payments, Due Year Three 2022 Lessee, Operating Lease, Liability, Payments, Due Year Four 2023 Lessee, Operating Lease, Liability, Payments, Due Year Five Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total future minimum lease payments Lessee, Operating Lease, Liability, Payments, Due Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Total operating lease liabilities Nature of Business and Basis of Presentation Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Schedule of Share-based Compensation, Stock Options, Activity Share-based Compensation, Stock Options, Activity [Table Text Block] Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Letters of Credit Letter of Credit [Member] Credit Facility Line of Credit [Member] Credit Agreement [Member] Credit Agreement [Member] Credit Agreement [Member] Senior Credit Facility Senior Credit Facility [Member] Senior Credit Facility [Member] Senior Revolving Credit Facility Senior Revolving Credit Facility [Member] Senior Revolving Credit Facility [Member] Proceeds from Lines of Credit Proceeds from Lines of Credit Line of Credit Facility, Maximum Borrowing Capacity Line of Credit Facility, Maximum Borrowing Capacity Debt Instrument, Debt Default, Amount Debt Instrument, Term Long-term line of credit Long-term Line of Credit Stated interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Weighted average effective interest rate (as a percent) Long-term Debt, Weighted Average Interest Rate, at Point in Time Letters of credit, amount outstanding Letters of Credit Outstanding, Amount Remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Interest expense Interest Expense, Debt Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Common Stock Common Stock [Member] Additional Paid-In-Capital Additional Paid-in Capital [Member] Convertible Preferred Stock Preferred Stock [Member] Accumulated Other Comprehensive Loss Accumulated Deficit Retained Earnings [Member] Treasury Stock Treasury Stock [Member] Statement [Line Items] Statement [Line Items] Beginning Balance (in shares) Shares, Outstanding Beginning Balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Warrant Exercises (in shares) Stock Issued During Period, Shares, Exercise of Stock Warrants Stock Issued During Period, Shares, Exercise of Stock Warrants Warrant exercises Stock Issued During Period, Value, Exercise of Stock Warrants Stock Issued During Period, Value, Exercise of Stock Warrants Restricted stock activity (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Restricted stock activity Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Stock option activity (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Stock option activity Stock Issued During Period, Value, Employee Stock Purchase Plan Preferred stock dividends (in hares) Common Stock Dividends, Shares Preferred stock dividends Dividends, Common Stock, Cash Share-based compensation expense Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Share repurchases (in shares) Stock Repurchased During Period, Shares Share repurchases Stock Repurchased During Period, Value Preferred stock conversion (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Preferred stock conversion Stock Issued During Period, Value, Conversion of Convertible Securities Other comprehensive loss, net of tax Other Comprehensive Income (Loss), Net of Tax Ending Balance (in shares) Ending Balance Restricted Stock and Restricted Stock Units (RSUs) Restricted Stock and Restricted Stock Units (RSUs) [Member] Restricted Stock and Restricted Stock Units (RSUs) [Member] Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Balance, beginning of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited/canceled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Balance, end of period (in shares) Weighted-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] Balance, beginning of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited/canceled (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Balance, end of period (in dollars per share) Restatement [Axis] Restatement [Axis] Restatement [Domain] Restatement [Domain] As Previously Reported Previously Reported [Member] Operating profit (loss) Share-Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Maximum exposure of guarantor Guarantor Obligations, Maximum Exposure, Undiscounted Guarantor obligation term Guarantor Obligation Maturity Term Guarantor Obligation Maturity Term Fair value of guarantees Guarantor Obligations, Current Carrying Value Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Operating lease term Lessee, Operating Lease, Term of Contract Renewal term Lessee, Operating Lease, Renewal Term Operating lease expense Operating Lease, Expense Operating leases, rent expense Operating Leases, Rent Expense Operating lease liabilities included in cash flows Operating Lease, Lease Income, Lease Payments Operating lease, liability, current Operating Lease, Liability, Current Operating lease, liability, non-current Operating Lease, Liability, Noncurrent Weighted average lease term Operating Lease, Weighted Average Remaining Lease Term Weighted average discount rate, percent Operating Lease, Weighted Average Discount Rate, Percent Schedule of Segment Reporting Information, by Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Reconciliation of Operating Profit (Loss) from Segments to Consolidated Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Revenue from External Customers by Geographic Areas Revenue from External Customers by Geographic Areas [Table Text Block] 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 Statement of Comprehensive Income [Abstract] Other comprehensive (loss) income, net of tax Other Comprehensive Income (Loss), Net of Tax [Abstract] Net change in defined benefit pension plan Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Net unrealized loss on cash flow hedges Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Total other comprehensive (loss) income Comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent