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Obligations and Note Payable Using Level 2 Inputs Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Other commitment, fee as a percentage of gross revenue Other Commitment, Fee As A Percentage Of Gross Revenue Other Commitment, Fee As A Percentage Of Gross Revenue Operating income Operating Income (Loss) Revenue, remaining performance obligation, amount Revenue, Remaining Performance Obligation, Amount Current Fiscal Year End Date Current Fiscal Year End Date Schedule of Maturity Analysis of Operating Lease Liabilities Finance Lease, Liability, to be Paid, Maturity [Table Text Block] Six months ending December 31, 2026 Finance Lease, Liability, to be Paid, Remainder of Fiscal Year Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Related Party Transaction [Domain] Related Party Transaction [Domain] Business Combination Business Combination [Text Block] Note Payable Notes Payable, Fair Value Disclosure Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] MTL Manufacturing & Equipment, Inc. MTL Manufacturing & Equipment, Inc. [Member] MTL Manufacturing & Equipment, Inc. Stock Appreciation Rights (“SAR”) issued Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Treasury Stock Shares Treasury Stock, Value [Abstract] Common stock, shares issued (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Discount amortization as interest expense Amortization of Debt Discount (Premium) Finished goods Inventory, Finished Goods, Gross Treasury stock (in shares) Beginning balance (in shares) Ending balance (in shares) Treasury Stock, Common, Shares Year ending December 31, 2028 Purchase Obligation, to be Paid, Year Two Equity Components [Axis] Equity Components [Axis] Accounts receivable Increase (Decrease) in Accounts Receivable Product and Service [Domain] Product and Service [Domain] Related Party Related Party [Member] Class of Stock [Line Items] Class of Stock [Line Items] Income tax paid, after refund 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Items] Property, Plant, and Equipment [Line Items] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Other noncurrent assets Other Assets, Noncurrent Year ending December 31, 2029 Finance Lease, Liability, to be Paid, Year Three Document Type Document Type Business acquisition Payments to Acquire Businesses, Net of Cash Acquired 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] Fair Value as of Grant Date Award Grant Date Fair Value Finance leases and other debt Finance Lease, Liability And Other Long-Term Debt Finance Lease, Liability And Other Long-Term Debt Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Noncurrent contract liabilities Long-term contract liabilities (included in Noncurrent contract liabilities) Contract with Customer, Liability, Noncurrent Work in process Inventory, Work in Process, Gross Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Payment for debt extinguishment or debt prepayment cost Payment for Debt Extinguishment or Debt Prepayment Cost Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Commitments and Contingencies (Note 11) Commitments and Contingencies Gross Carrying Value Intangible Asset, Finite-Lived, before Accumulated Amortization Schedule of Supplemental Balance Sheet Information Related to Leases Assets And Liabilities, Lessee [Table Text Block] Assets And Liabilities, Lessee [Table Text Block] Customer B Customer B [Member] Customer B [Member] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Accounting Standards Update and Change in Accounting Principle [Table] Accounting Standards Update and Change in Accounting Principle [Table] Machinery and equipment Machinery and Equipment [Member] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Executive Category: Executive Category [Axis] Cash paid for amounts included in the measurement of lease liabilities Cash Flow, Lessee [Abstract] Cash Flow, Lessee [Abstract] Amortization of right-of-use (“ROU”) asset Finance Lease, Right-of-Use Asset, Amortization Counterparty Name [Axis] Counterparty Name [Axis] Majority shareholder ownership threshold for variable rate increase (as percent) Debt Instrument, Majority Shareholder Ownership Threshold For Variable Rate Increase Debt Instrument, Majority Shareholder Ownership Threshold For Variable Rate Increase Goodwill Goodwill [Roll Forward] LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Trade Names Trade Names [Member] Inventories, net Inventories, net Inventory, Net Award Type [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Interest expense Finance Lease, Interest Expense Six months ending December 31, 2026 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Tariff refund liability Increase (Decrease) in IEEPA Tariff Refund Liability Increase (Decrease) in IEEPA Tariff Refund Liability Level 3 Fair Value, Inputs, Level 3 [Member] Accrued Product Warranty Movement in Standard Product Warranty Accrual [Roll Forward] Reconciliation of cash, cash equivalents, and restricted cash to the Consolidated Balance Sheets Supplemental Cash Flow Information [Abstract] Net contract assets (liabilities) Contract With Customer, Asset (Liability) Contract With Customer, Asset (Liability) Power Systems Energy End Market [Member] Energy End Market [Member] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Subsidiary, ownership percentage, noncontrolling owner Subsidiary, Ownership Percentage, Noncontrolling Owner PEO Name PEO Name Geographical [Axis] Geographical [Axis] Leasehold improvements Leasehold Improvements [Member] Other short-term financing Other Short-Term Borrowings Average fair market value per share of common stock, threshold trading days Share-Based Compensation Arrangement By Share-Based Payment Award, Average Fair Market Value Per Common Share, Threshold Trading Days Share-Based Compensation Arrangement By Share-Based Payment Award, Average Fair Market Value Per Common Share, Threshold Trading Days Long-Lived Asset, Class [Axis] Long-Lived Asset, Class [Axis] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Inventory Allowance Accounts Receivable, Allowance for Credit Loss [Roll Forward] Legal Entity [Axis] Legal Entity [Axis] Carrying Value Notes Payable Cash, cash equivalents, and restricted cash at beginning of the period Cash, cash equivalents, and restricted cash at end of the period Total cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Accounts payable Increase (Decrease) in Accounts Payable Other accrued liabilities (to related parties $53 and $60 as of June 30, 2026 and December 31, 2025, respectively) Other accrued liabilities Total Other Accrued Liabilities, Current Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Debt Instrument [Axis] Debt Instrument [Axis] Cash paid at closing Payments to Acquire Businesses, Gross Equity method investment, ownership percentage Equity Method Investment, Ownership Percentage Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Total Total lease cost, net Lease, Cost Schedule of Outstanding Debt Schedule of Debt [Table Text Block] Investment amount with related party Related Party Transaction, Amounts of Transaction Customer [Domain] Customer [Domain] Investment, Name [Domain] Investment, Name [Domain] Schedule of Inventory and Activity in Inventory Allowance Schedule of Inventory, Current [Table Text Block] Leases Lessee, Operating Leases [Text Block] Year ending December 31, 2027 Long-Term Debt, Maturity, Year One Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic (in dollars per share) Earnings per share of common stock – basic (in dollars per share) Earnings Per Share, Basic Raw materials Inventory, Raw Materials, Gross Contract liabilities Short-term contract liabilities (included in Other accrued liabilities) Contract with Customer, Liability, Current Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Repayment of long-term debt and lease liabilities Repayment of Long-Term Debt, Long-Term Lease Obligation, and Capital Security Long-term debt, net of current maturities Long-Term Debt, Excluding Current Maturities Award Type [Axis] Award Type [Axis] Short-term lease cost Short-Term Lease, Cost Customer C Customer C [Member] Customer C Weichai America Corp Weichai America Corp [Member] Weichai America Corp Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts receivable, net of allowances of $1,734 and $967 as of June 30, 2026 and December 31, 2025, respectively; (from related parties $200 and $415 as of June 30, 2026 and December 31, 2025, respectively) Accounts receivable, net of allowances Accounts Receivable, after Allowance for Credit Loss, Current Retained earnings Retained Earnings (Accumulated Deficit) Number of outstanding letters of credit Number Of Outstanding Letters Of Credit Number Of Outstanding Letters Of Credit Product and Service [Axis] Product and Service [Axis] Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock Common Stock [Member] Legal settlement Litigation Settlement, Fee Expense Operating lease cost Operating Lease, Cost Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Summary of Significant Accounting Policies and Other Information Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Cover [Abstract] Concentration risk (as percent) Concentration Risk, Percentage Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Equity Awards Adjustments Equity Awards Adjustments [Member] Year ending December 31, 2026 Purchase Obligation, to be Paid, Remainder of Fiscal Year Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity Variable lease cost Variable Lease, Cost Term of collaborative arrangement (in years) Collaborative Arrangement, Term Collaborative Arrangement, Term Employee Stock Option Share-Based Payment Arrangement, Option [Member] Note Payable Notes Payable, Other Payables [Member] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Related Party [Domain] Related and Nonrelated Parties [Domain] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Other noncurrent liabilities Increase (Decrease) in Other Noncurrent Liabilities Other expense (income) Other Nonoperating Income (Expense) Income tax receivable Income Taxes Receivable, Current Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period SBA Loan SBA Loan [Member] SBA Loan Long-Lived Asset, Class [Domain] Long-Lived Asset, Class [Domain] Charged to expense Inventory Valuation Reserves, Charged To Expense Inventory Valuation Reserves, Charged To Expense Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Adjustment to Compensation: Adjustment to Compensation [Axis] Supplier [Axis] Supplier [Axis] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Operating cash flows paid for interest portion of finance leases Finance Lease, Interest Payment on Liability Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Total long-term debt and finance leases Total long-term debt and finance leases Long-Term Debt and Lease Obligation Gary Winemaster v. The Company Gary Winemaster Versus The Company [Member] Gary Winemaster Versus The Company Year ending December 31, 2031 Finance Lease, Liability, to be Paid, Year Five Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable (to related parties $8,700 and $4,126 as of June 30, 2026 and December 31, 2025, respectively) Accounts payable to related parties Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Supplier recoveries Product Warranty Recoveries Product Warranty Recoveries Year ending December 31, 2031 Lessee, Operating Lease, Liability, to be Paid, Year Five Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Purchase price Business Combination, Consideration Transferred Warranty costs, net of supplier recoveries Product Warranty Expense Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Working capital and other adjustments Business Combination, Consideration Transferred, Working Capital And Other Adjustments Business Combination, Consideration Transferred, Working Capital And Other Adjustments Repayment of short-term financings Repayment of short-term financings Repayments of Short-Term Debt Purchased inventory Collaborative Arrangement, Inventory, Purchased Goods Collaborative Arrangement, Inventory, Purchased Goods Changes in estimates for preexisting warranties Standard Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Finance Leases Finance Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Customer F Customer F [Member] Customer F Total inventories Inventory, Gross Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Finance leases Right-of-Use Asset Obtained in Exchange for Finance Lease Liability ROU assets obtained in exchange for lease obligations Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract] Right-Of-Use Asset Obtained In Exchange For Lease Liability Unrecognized tax benefits that would impact effective tax rate Unrecognized Tax Benefits that Would Impact Effective Tax Rate Current assets: Assets, Current [Abstract] Weighted-average remaining lease term, operating leases (in years) Operating Lease, Weighted Average Remaining Lease Term Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Subsidiary, Sale of Stock [Line Items] Subsidiary, Sale of Stock [Line Items] Income tax expense (benefit) Income tax expense (benefit) Income Tax Expense (Benefit) Customer Concentration Risk Customer Concentration Risk [Member] Cost of sales (derived from related party net sales $3 and $271 for the three months ended June 30, 2026 and 2025, respectively, and $8 and $587 for the six months ended June 30, 2026 and 2025, respectively) Cost of Product and Service Sold Total Purchase Obligation Award Timing Method Award Timing Method [Text Block] Consolidation Consolidation, Policy [Policy Text Block] Net increase (decrease) in cash, cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Long-term debt Long-Term Debt, Excluding Notes Payable Long-Term Debt, Excluding Notes Payable Net income Net income Net income – basic and diluted Net Income (Loss) Attributable to Parent First Master Loan Agreement First Master Loan Agreement [Member] First Master Loan Agreement Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Customer G Customer G [Member] Customer G Litigation settlement payment Litigation Settlement, Amount Awarded to Other Party Schedule of Contract Balances Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] North America (outside of United States) North America, Excluding United States [Member] North America, Excluding United States Warranty Costs Standard Product Warranty, Policy [Policy Text Block] Proceeds from short-term financings Proceeds from Short-Term Debt Common Shares Outstanding Common Stocks, Including Additional Paid in Capital, Net of Discount [Abstract] Contract With Customer Contract With Customer [Member] Contract With Customer Damages sought Loss Contingency, Damages Sought, Value Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block]