Operating Lease Assets and Liabilities Lessee, Assets And Liabilities [Table Text Block] Lessee, Assets And Liabilities [Table Text Block] Adjustments to reconcile net income (loss) to net cash used in operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Total future minimum lease payments Lessee, Operating Lease, Liability, to be Paid Bad debt expense, net Accounts Receivable, Credit Loss Expense (Reversal) Income tax provision (benefit) Income tax provision (benefit) Income Tax Expense (Benefit) Geographical [Domain] Geographical [Domain] Deferred income taxes Deferred Income Tax Assets, Net Maturities of short-term investments Proceeds from Maturities, Prepayments and Calls of Short-Term Investments Activity in Product Warranty Accrual Schedule of Product Warranty Liability [Table Text Block] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share 2027 Lessee, Operating Lease, Liability, to be Paid, Year Four Retention amounts included in accounts receivable Contract with Customer, Receivable, after Allowance for Credit Loss Income Statement [Abstract] Income Statement [Abstract] Financial Standby Letter of Credit Financial Standby Letter of Credit [Member] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Additional Paid-in Capital Additional Paid-in Capital [Member] Document Fiscal Period Focus Document Fiscal Period Focus Earnings (loss) per share: Earnings Per Share, Basic [Abstract] Cost of goods sold Cost of Goods and Services Sold Thereafter Lessee, Operating Lease, Liability, To Be Paid, After Year Four Lessee, Operating Lease, Liability, To Be Paid, After Year Four Diluted (in shares) Weighted average diluted shares (in shares) Weighted Average Number of Shares Outstanding, Diluted Guarantee Obligations [Line Items] Guarantor Obligations [Line Items] Oil and gas (excludes petrochemical) Oil and Gas Service [Member] Components of Inventories Schedule of Inventory, Current [Table Text Block] Debt Instrument Debt Instrument [Axis] Lease accrual Operating Lease, Right-Of-Use Asset, Lease Accrual Operating Lease, Right-Of-Use Asset, Lease Accrual Dividends paid Payments of Ordinary Dividends, Common Stock Revolving credit facility Line of Credit Facility, Maximum Borrowing Capacity Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Base Rate Base Rate [Member] Powell (UK) Limited Powell U K Limited [Member] Powell (UK) limited. Debt Instrument, Name Debt Instrument, Name [Domain] Investing Activities: Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Contract assets and liabilities, net Increase (Decrease) In Contract With Customer Asset And Liability, Net Increase (Decrease) In Contract With Customer Asset And Liability, Net Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate 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 Range Statistical Measurement [Domain] Asia/Pacific Asia Pacific [Member] Depreciation Depreciation Fair Value of Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Weighted average discount rate, percent Operating Lease, Weighted Average Discount Rate, Percent Short-term lease cost Short-Term Lease, Cost Share-based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Product Concentration Risk Product Concentration Risk [Member] Additional paid-in capital Additional Paid in Capital, Common Stock Authorized increase to quarterly cash dividends, percentage Common Stock Dividends, Authorized Increase, Percentage Common Stock Dividends, Authorized Increase, Percentage Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents Liabilities: Lease, Liabilities [Abstract] Lease, Liabilities [Abstract] Foreign currency translation adjustments Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Cash collateral pledged balance Line Of Credit Facility, Collateral Amount Line Of Credit Facility, Collateral Amount Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Current Liabilities: Liabilities, Current [Abstract] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Common stock, shares issued (in shares) Common Stock, Shares, Issued Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Net income (loss) Net income (loss) Net loss Net Income (Loss) Attributable to Parent Commercial and other industrial Commercial and Other Industrial [Member] Commercial and Other Industrial Contract liabilities Contract liabilities Contract with Customer, Liability, Current Subsequent Event Type [Axis] Subsequent Event Type [Axis] Fed Funds Rate Fed Funds Effective Rate Overnight Index Swap Rate [Member] Transferred over Time Transferred over Time [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] Equity Component [Domain] Equity Component [Domain] Amendment Flag Amendment Flag Net cash provided by (used in) investing activities Net Cash Provided by (Used in) Investing Activities Subsequent Event Type [Domain] Subsequent Event Type [Domain] Operating lease cost Operating Lease, Cost Borrowings Debt Instrument, Face Amount Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Guarantee liability Guarantee liability Guarantor Obligations, Current Carrying Value Vesting, percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Leases Lessee, Operating Leases [Text Block] Plan Name Plan Name [Axis] Retained amount expected to be collected Contract with Customer, Receivable, after Allowance for Credit Loss, Noncurrent Entity Current Reporting Status Entity Current Reporting Status Other assets Other Assets, Noncurrent All others Other, Customers [Member] Other, Customers [Member] Bloomberg Short-Term Bank Yield Index (BSBY) Bloomberg Short-Term Bank Yield Index (BSBY) [Member] Bloomberg Short-Term Bank Yield Index (BSBY) Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Plan Name Plan Name [Domain] Dividends per share, annualized (in dollars per share) Common Stock, Dividends, Per Share, Declared, Annualized Common Stock, Dividends, Per Share, Declared, Annualized Remainder of 2023 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Surety Bonds Surety Bond [Member] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Common stock, par value $0.01; 30,000,000 shares authorized; 12,640,701 and 12,588,011 shares issued, respectively Common Stock, Value, Outstanding Entity Address, State or Province Entity Address, State or Province Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Debt covenant, consolidated interest coverage ratio (greater than) Debt Instrument, Covenant, Interest Coverage Ratio, Minimum Debt Instrument, Covenant, Interest Coverage Ratio, Minimum Change due to foreign currency translation Standard and Extended Product Warranty Accrual, Foreign Currency Translation Gain (Loss) Award Type Award Type [Axis] Goodwill and intangible assets, net Intangible Assets, Net (Including Goodwill) Net cash used in operating activities Net Cash Provided by (Used in) Operating Activities Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Short-term investments Short-term Investments, Fair Value Disclosure Short-term Investments, Fair Value Disclosure Current operating lease liabilities Current operating lease liabilities Operating Lease, Liability, Current Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Effect of exchange rate changes on cash and cash equivalents Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations Property, plant and equipment, net Property, Plant and Equipment, Net Schedule of Restricted Stock Units Activity Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Retained amount expected to be collected in the next twelve months Contract with Customer, Receivable, after Allowance for Credit Loss, Current Payments on industrial development revenue bonds Repayments of Long-Term Debt Assets and Liabilities, Lessee [Abstract] Assets and Liabilities, Lessee [Abstract] Treasury stock, 806,018 shares at cost Treasury Stock, Value Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Forfeited/canceled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Legal Entity Legal Entity [Axis] Revolving credit facility borrowings, outstanding amount Long-Term Debt Common stock, shares authorized (in shares) Common Stock, Shares Authorized Non-domestic subsidiaries of voting capital stock Percentage Of Non Domestic Capital Stock Pledged As Collateral For Credit Facility Percentage of non domestic capital stock pledged as collateral for credit facility. Industrial Development Revenue Bonds Industrial Development Revenue Bonds [Member] Industrial development revenue bonds. Total Liabilities Liabilities Schedule Of Guarantee Obligations [Table] Schedule of Guarantor Obligations [Table] Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Guarantor Obligations, Nature Guarantor Obligations, Nature [Domain] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Income taxes payable Accrued Income Taxes, Current Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Geographical [Axis] Geographical [Axis] Maximum Maximum [Member] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Deduction for warranty charges Standard and Extended Product Warranty Accrual, Decrease for Payments Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Fair Value Hierarchy Fair Value Hierarchy and NAV [Domain] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Work-in-progress Inventory, Work in Process, Gross Total Current Assets Assets, Current Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Document Type Document Type Revenue recognized related to contract liabilities Contract with Customer, Liability, Revenue Recognized Transferred at Point in Time Transferred at Point in Time [Member] Entity Small Business Entity Small Business Long-Term Debt Long-Term Debt [Text Block] Number of Restricted Stock Units Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Revenue from External Customer [Line Items] Revenue from External Customer [Line Items] Dividends per share (in dollars per share) Quarterly cash dividend (in dollars per share) Common Stock, Dividends, Per Share, Declared Assets: Assets, Fair Value Disclosure [Abstract] Line Of Credit Facility [Table] Line of Credit Facility [Table] Outstanding at beginning of period (in dollars per share) Outstanding at end 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 Remaining performance obligation, expected timing of satisfaction, period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period U.S. Revolver Domestic Line of Credit [Member] Product and Service [Domain] Product and Service [Domain] Operating Activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Entity Shell Company Entity Shell Company Deferred income taxes Deferred Income Tax Expense (Benefit) Assets: Lease, Assets [Abstract] [Abstract] Lease, Assets [Abstract] [Abstract] RSU Activity (number of shares) [Roll Forward] Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] Accrued liabilities Increase (Decrease) in Accrued Liabilities 2024 Lessee, Operating Lease, Liability, to be Paid, Year One Less: sublease income Sublease Income Performance Based Restricted Stock Unit Performance Based Restricted Stock Unit [Member] Performance based restricted stock unit. Accounts receivable, net Increase (Decrease) in Accounts Receivable Title of 12(b) Security Title of 12(b) Security Other assets Other Assets, Fair Value Disclosure Subsequent Event Subsequent Event [Member] Summary of Contract Asset and Liabilities Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Document Period End Date Document Period End Date Short-term investments Short-Term Investments Immediate Vesting Share-Based Payment Arrangement, Tranche One [Member] Accrued product warranty Balance at beginning of period Balance at end of period Product Warranty Accrual, Current Subsequent Event [Line Items] Subsequent Event [Line Items] Stock-based compensation (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Total lease liabilities Present value of lease liabilities Operating Lease, Liability Total Assets Assets Debt Disclosure [Abstract] Debt Disclosure [Abstract] Earnings (loss) per share: Earnings Per Share [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Changes in contract estimates related to projects in progress Contract with Customer, Asset, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Accounting Policies [Abstract] Accounting Policies [Abstract] Weighted average shares: Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Inventories Total inventories Inventory, Net Accrued compensation and benefits Employee-related Liabilities, Current Variable lease cost Variable Lease, Cost Accounts payable Accounts Payable, Current Income (loss) before income taxes Income (loss) before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Stockholders' Equity: Stockholders' Equity Attributable to Parent [Abstract] Percentage of voting capital stock pledged as collateral Percentage Of Domestic Capital Stock Pledged As Collateral For Credit Facility Percentage of domestic capital stock pledged as collateral for credit facility. Earnings Per Share Earnings Per Share [Text Block] Facility Agreement Facility Agreement [Member] Facility agreement. Deferred compensation Deferred Compensation Liability, Classified, Noncurrent Detail of Selected Balance Sheet Accounts Supplemental Balance Sheet Disclosures [Text Block] Entity Filer Category Entity Filer Category Debt covenant, consolidated leverage ratio (less than) Debt Instrument, Covenant, Leverage Ratio, Maximum Allowed Debt Instrument, Covenant, Leverage Ratio, Maximum allowed Basic (in shares) Weighted average basic shares (in shares) Weighted Average Number of Shares Outstanding, Basic Equity Award Award Type [Domain] United States UNITED STATES Income taxes receivable Income Taxes Receivable, Current Liabilities: Liabilities, Fair Value Disclosure [Abstract] Compensation expense Share-Based Payment Arrangement, Expense Gross profit Gross Profit Commitments and Contingencies (Note F) Commitments and Contingencies Financing Activities: Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Security Exchange Name Security Exchange Name Entity Registrant Name Entity Registrant Name Amended and Restated Credit Agreement Amended And Restated Credit Agreement [Member] Amended And Restated Credit Agreement [Member] Subsequent Events Subsequent Events [Text Block] Preferred stock, par value $0.01; 5,000,000 shares authorized; none issued Preferred Stock, Value, Issued Time Based Restricted Stock Unit Time Based Restricted Stock Unit [Member] Time based restricted stock unit. Restricted Stock Restricted Stock [Member] Revenues Revenue from Contract with Customer, Excluding Assessed Tax Entity Address, City or Town Entity Address, City or Town Income taxes Increase (Decrease) in Income Taxes Payable Europe, Middle East and Africa EMEA [Member] Shares issued under the plan (in shares) Share Based Compensation Arrangement By Share Based Payment Award Annual Shares Issuable Share-based compensation arrangement by share-based payment award annual shares issuable. Leases [Abstract] Leases [Abstract] Cover [Abstract] Cover [Abstract] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Stock-Based Compensation Share-Based Payment Arrangement [Text Block] Minimum Minimum [Member] Mexico, Central and South America Mexico, Central America And South America [Member] Mexico, Central America And South America [Member] Revenue Revenue from Contract with Customer [Text Block] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Entity Emerging Growth Company Entity Emerging Growth Company Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Revenue from External Customers by Products and Services [Table] Revenue from External Customers by Products and Services [Table] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Treasury Stock Treasury Stock, Common [Member] Fair Value Measurements Fair Value Disclosures [Text Block] Shares withheld in lieu of employee tax withholding Payment, Tax Withholding, Share-Based Payment Arrangement Total Liabilities and Stockholders' Equity Liabilities and Equity Trading Symbol Trading Symbol Entity File Number Entity File Number Raw materials, parts and sub-assemblies, net Inventory, Raw Materials and Supplies, Net of Reserves Treasury stock, shares (in shares) Balance Treasury Stock (in shares) Balance Treasury Stock (in shares) Treasury Stock, Common, Shares Guarantor Obligations, Nature Guarantor Obligations, Nature [Axis] Timing of Transfer of Good or Service [Domain] Timing of Transfer of Good or Service [Domain] Dilutive effect of restricted stock units (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Research and development expenses Research and Development Expense Canada CANADA Purchases of short-term investments Payments to Acquire Short-Term Investments Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Effective tax rate Effective Income Tax Rate Reconciliation, Percent Current Fiscal Year End Date Current Fiscal Year End Date Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Less: present value discount (imputed interest) Lessee, Operating Lease, Liability, Undiscounted Excess Amount Vesting Vesting [Axis] Diluted (in dollars per share) Earnings Per Share, Diluted Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Anniversary of Grant Date Share-Based Payment Arrangement, Tranche Two [Member] Proceeds from sale of property, plant and equipment Proceeds from Sale of Property, Plant, and Equipment Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Accounts payable Increase (Decrease) in Accounts Payable Overview and Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Concentration risk, percentage Concentration Risk, Percentage Subsequent Events [Abstract] Subsequent Events [Abstract] Cash collateral required for guarantees, period (greater than) Cash Collateral Required for Guarantees, Period Cash Collateral Required for Guarantees, Period Concentration Risk Type [Axis] Concentration Risk Type [Axis] Gain on cash flow commodity hedge Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Total Current Liabilities Liabilities, Current 2025 Lessee, Operating Lease, Liability, to be Paid, Year Two Other current assets Other Assets, Current Income Taxes Income Tax Disclosure [Text Block] Credit Facility Credit Facility [Domain] Basic (in dollars per share) Earnings Per Share, Basic Remaining performance obligation, amount Revenue, Remaining Performance Obligation, Amount 2026 Lessee, Operating Lease, Liability, to be Paid, Year Three Increase to warranty expense Standard and Extended Product Warranty Accrual, Period Increase (Decrease) Additional bonding capacity Commitments And Contingencies Additional Bonding Capacity Commitments and contingencies additional bonding capacity. Revenue from Contract with Customer Benchmark Revenue from Contract with Customer Benchmark [Member] Maturities of Operating Lease Liabilities Lessee, Operating Lease, Liability, Maturity [Table Text Block] Entity Address, Address Line One Entity Address, Address Line One Deferred compensation Deferred Compensation Liability, Current and Noncurrent Concentration Risk Type [Domain] Concentration Risk Type [Domain] Total Stockholders' Equity Balance Balance Stockholders' Equity Attributable to Parent Prepaid expenses Prepaid Expense, Current Product and Service [Axis] Product and Service [Axis] 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 Vesting Vesting [Domain] Class of Stock Class of Stock [Domain] Line Of Credit Facility [Line Items] Line of Credit Facility [Line Items] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Final annual payment Debt Instrument, Annual Principal Payment Amount available under the credit facility Line of Credit Facility, Remaining Borrowing Capacity Net contract asset (liability) Contract With Customer, Asset (Liability), Net, Current Contract with Customer, Asset (Liability), Net, Current Entity Interactive Data Current Entity Interactive Data Current Credit Facility Credit Facility [Axis] Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Numerator: Net Income (Loss) Attributable to Parent [Abstract] Retained Earnings Retained Earnings [Member] Subsequent Event [Table] Subsequent Event [Table] Dividends Dividends, Common Stock, Cash Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Entity Tax Identification Number Entity Tax Identification Number Total lease cost Lease, Cost Net decrease in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Common Stock Common Stock [Member] Stock-based compensation Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Lease Cost Lease, Cost [Table Text Block] Class of Stock Class of Stock [Axis] Statement [Table] Statement [Table] Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] 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 Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Contract assets Contract assets Contract with Customer, Asset, after Allowance for Credit Loss, Current Document Quarterly Report Document Quarterly Report Current Assets: Assets, Current [Abstract] Long-term operating lease liabilities Long-term operating lease liabilities Operating Lease, Liability, Noncurrent Range Statistical Measurement [Axis] Schedule of Calculation of the Effective Income Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Petrochemical Petrochemical [Member] Petrochemical [Member] Retained earnings Retained Earnings (Accumulated Deficit) Accounts receivable, less allowance for credit losses of $348 and $344 Accounts Receivable, after Allowance for Credit Loss, Current Entity Central Index Key Entity Central Index Key Equity Components [Axis] Equity Components [Axis] Weighted Average Grant Value Per Share Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Shares withheld in lieu of employee tax withholding Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Axis] Electric utility Electricity [Member] Other current liabilities Other Accrued Liabilities, Current Interest income, net Interest Income (Expense), Nonoperating, Net Document Fiscal Year Focus Document Fiscal Year Focus Entity Entity [Domain] City Area Code City Area Code Statement [Line Items] Statement [Line Items] ASSETS Assets [Abstract] Other, net Increase (Decrease) in Other Operating Assets and Liabilities, Net Letters of credit collateral amount, minimum outstanding Letter of Credit, Collateral Amount, Minimum outstanding Letter of Credit, Collateral Amount, Minimum outstanding Unvested restricted stock outstanding (in shares) Outstanding at beginning of period (in shares) Outstanding at end of period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Variable Rate Variable Rate [Domain] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Fair Value, Hierarchy Fair Value Hierarchy and NAV [Axis] Selling, general and administrative expenses Selling, General and Administrative Expense Traction power Traction Power Customer [Member] Traction Power Customer [Member] Operating lease assets, net Operating lease assets, net Operating Lease, Right-of-Use Asset Accumulated Other Comprehensive Income/(Loss) AOCI Attributable to Parent [Member] Predecessor companies founded Predecessor Company Founded Period Predecessor Company Founded Period Stock-based compensation Share-Based Payment Arrangement, Noncash Expense Variable Rate Variable Rate [Axis] Other long-term liabilities Other Liabilities, Noncurrent Non-Employee Director Equity Incentive Plan Non Employee Director Equity Incentive Plan [Member] 2014 Non-Employee Director Equity Incentive Plan Member Document Transition Report Document Transition Report Local Phone Number Local Phone Number Standard assurance warranty, period Standard Assurance Warranty, Period Standard Assurance Warranty, Period Purchases of property, plant and equipment Payments to Acquire Property, Plant, and Equipment Operating income (loss) Operating Income (Loss) Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Inventories Increase (Decrease) in Inventories Reconciliation of Basic and Diluted Weighted Average Shares used in Computation of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Balance (in shares) Balance (in shares) Common Stock, Shares, Outstanding Movement in Standard Product Warranty Accrual [Roll Forward] Movement in Standard Product Warranty Accrual [Roll Forward]