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[Abstract] Leases [Abstract] Supplemental Financial Information Additional Financial Information Disclosure [Text Block] New Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Finance Leases Finance Lease, Liability [Abstract] SOFR Secured Overnight Financing Rate (SOFR) [Member] Repurchase of common shares to satisfy minimum tax withholdings Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Basic (in dollars per share) (Loss) earnings per share - basic (in dollars per share) Earnings Per Share, Basic Adjustment to Compensation: Adjustment to Compensation [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Liabilities settled Asset Retirement Obligation, Liabilities Settled Revenue Revenue from Contract with Customer [Text Block] Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Adjustment to Compensation, Amount Adjustment to Compensation Amount Consolidation Consolidation, Policy [Policy Text Block] Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Stock option expense Stock Option Share-Based Payment Arrangement, Option [Member] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Prepaid taxes and tax refunds Prepaid Taxes Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts and Financing Receivables [Table] Total Stockholders’ Equity Beginning balance Ending balance Equity, Attributable to Parent Insider Trading Policies and Procedures [Line Items] Total stock-based compensation expense Share-Based Payment Arrangement, Expense Common stock, shares authorized (in shares) Common Stock, Shares Authorized Current assets: Assets, Current [Abstract] Total Liabilities and Stockholders’ Equity Liabilities and Equity Other current liabilities Increase (Decrease) in Other Current Liabilities Before Out of Period State Income Tax Expense Before Out of Period State Income Tax Expense [Member] Before Out of Period State Income Tax Expense Triggering Event [Table] Triggering Event [Table] Triggering Event Number of Options Outstanding and Exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward] LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Cover [Abstract] Cover [Abstract] Maximum Maximum [Member] Options exercisable, weighted average exercise price (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price General and Administrative Expense General and Administrative Expense [Member] Debt instrument, annual increase Debt Instrument, Interest Rate, Increase (Decrease) Accounting Policies [Abstract] Accounting Policies [Abstract] RSA expense Restricted Stock Restricted Stock [Member] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Debt Instrument [Line Items] Debt Instrument [Line Items] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Schedule of Restricted Stock Activity Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Treasury Stock Treasury Stock, Common [Member] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Pay vs Performance Disclosure [Line Items] Total operating lease obligations Operating Lease, Liability Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Depreciation, amortization, depletion and accretion Depreciation, Depletion and Amortization, Nonproduction Amortization of right-of-use assets Finance Lease, Right-of-Use Asset, Amortization (Loss) income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Entity Shell Company Entity Shell Company Other long-term liabilities Total other long-term liabilities Other Liabilities, Noncurrent Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Less: Current maturities Long-Term Debt, Current Maturities Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Company Selected Measure Amount Company Selected Measure Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Other long-term liabilities Increase (Decrease) in Other Noncurrent Liabilities Options expired / forfeited (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Name Measure Name Prepaid expenses and other current assets: Prepaid Expense and Other Assets, Current [Abstract] Operating lease obligations, current Current portion of operating lease obligations Operating Lease, Liability, Current Secured Debt Secured Debt [Member] Mine development costs, net Mine Development Cost Mine Development Cost Interest on lease liabilities Finance Lease, Interest Expense Class of Stock [Line Items] Class of Stock [Line Items] Document Fiscal Period Focus Document Fiscal Period Focus Schedule of Other Liabilities Other Liabilities [Table Text Block] Award Timing Method Award Timing Method [Text Block] Award Type [Axis] Award Type [Axis] Long-term debt Long-Term Debt Total Assets Assets Investment, Name [Domain] Investment, Name [Domain] 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Remaining Lease Term Right-of-use assets obtained in exchange for new operating lease liabilities Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Finance lease cost: Lease, Cost [Abstract] Options outstanding, start of year (in shares) Options outstanding, end of year (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Repayments of revolving credit facility Repayments of Lines of Credit 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] Revenue Revenue from Contract with Customer, Including Assessed Tax Equity method investments Equity Method Investments Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Business Combination [Domain] Business Combination [Domain] Common stock, shares outstanding (in 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Percent Limited Guarantees. 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Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Accumulated depreciation Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization City Area Code City Area Code Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] All Trading Arrangements All Trading Arrangements [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Tranche Year Three Tranche Year Three [Member] Tranche Year Three Options vested, weighted average remaining contractual term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term Tranche Year One Tranche Year One [Member] Tranche Year One Supply agreement performance bond 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Contract Contract with Customer, Term of Contract Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Trade receivables, net Trade Accounts Receivable [Member] Number of reportable segments Number of Reportable Segments Options expired / forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period Other long-term liabilities: Other Liabilities, Noncurrent [Abstract] Organization and Basis of Presentation Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Other Performance Measure, Amount Other Performance Measure, Amount Weighted-Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Entity Address, State or Province Entity Address, State or Province Principal payments on finance lease obligations Financing cash flows from finance leases Finance 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net Operating Lease, Right-of-Use Asset Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Effective tax rate Effective tax rate Effective Income Tax Rate Reconciliation, Percent Entity Interactive Data Current Entity Interactive Data Current Tranche Year Two Tranche Year Two [Member] Tranche Year Two Operating lease cost Operating Lease, Cost Expected Weighted- Average Period of Recognition (in years) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Options exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Equity [Abstract] Equity [Abstract] Options exercisable, intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Segment Reporting Segment Reporting Disclosure [Text Block] Periodic payment, principal Debt Instrument, Periodic Payment, Principal Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Other Commitments [Line Items] Other Commitments [Line Items] CTB Loan due January 2036 CTB Loan due January 2036 [Member] CTB Loan due January 2036 Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Finance lease, accumulated amortization Finance Lease, Right-of-Use Asset, Accumulated Amortization Selling, general and administrative Selling, General and Administrative Expense Acquisition of property, plant, equipment and intangible assets, net Payments to Acquire Productive Assets Depreciation, amortization, depletion and accretion Depreciation, Depletion and Amortization Schedule of Unrecognized Compensation Cost Share-Based Payment Arrangement, Nonvested Award, Cost [Table Text Block] Other long-term assets, net Total other long-term assets, net Other Assets, Noncurrent Equity percentage Debt Instrument, Convertible, Conversion Ratio Entity Central Index Key Entity Central Index Key PEO Name PEO Name Asset retirement obligations, beginning of period Asset retirement obligations, end of period Asset Retirement Obligation Minimum cash balance requirement Debt Covenant, Minimum Cash Balance Requirement Debt Covenant, Minimum Cash Balance Requirement Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Product inventory, net Inventory, Finished Goods, Gross West Virginia ("Mine 4") West Virginia ("Mine 4") [Member] West Virginia ("Mine 4") Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Revolving Credit Facility Revolving Credit Facility [Member] Finance lease obligations Total finance lease obligations Finance Lease, Liability Arrangement Duration Trading Arrangement Duration Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Raw material inventory Inventory, Raw Materials and Supplies, Gross Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Exercise Price Award Exercise Price Entity Filer Category Entity Filer Category Local Phone Number Local Phone Number Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Unrecognized Compensation Cost Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Other non-cash items, net Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Stock-Based Compensation Share-Based Payment Arrangement [Text Block] ASSETS Assets [Abstract] Total long-term debt obligations Long-Term Debt, Excluding Current Maturities Credit Facility [Axis] Credit Facility [Axis] Underlying Security Market Price Change Underlying Security Market Price Change, Percent Penalty Year 2026 Penalty Year 2026 [Member] Penalty Year 2026 Balance Sheet Location [Axis] Statement of Financial Position Location, Balance [Axis] Issued Upon Vesting of PSUs Issued Upon Vesting of PSUs [Member] Issued Upon Vesting of PSUs Debt Instrument [Axis] Debt Instrument [Axis] Forfeited (in dollars per share) 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 Credit Facility [Domain] Credit Facility [Domain] Stockholders’ equity: Equity, Attributable to Parent [Abstract] 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] Award vesting rights, percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Prepaid lender fees, net Prepaid Lender Fees, Current Prepaid Lender Fees, Current Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Research and development Research and Development Expense Investment, Name [Axis] Investment, Name [Axis] Interest rate, stated percentage Debt Instrument, Interest Rate, Stated Percentage Long-term operating lease obligations Operating lease obligations, long-term Operating Lease, Liability, Noncurrent Repurchase of common shares to satisfy minimum tax withholdings (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Commitments and Contingencies Commitments Contingencies and Guarantees [Text Block] Name of Property [Domain] Name of Property [Domain] Other Liabilities Other Liabilities [Member] Fair Value as of Grant Date Award Grant Date Fair Value CFG Loan CFG Loan [Member] CFG Loan Entity Registrant Name Entity Registrant Name Other long-term assets, net Increase (Decrease) in Other Noncurrent Assets Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Forfeited (in shares) Forfeited / Canceled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Related Party Transaction [Line Items] Related Party Transaction [Line Items] Document Quarterly Report Document Quarterly Report Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Counterparty Name [Domain] Counterparty Name [Domain] Number of operating segments Number of Operating Segments Operating Leases Leases, Operating [Abstract] Outstanding, aggregate intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Options outstanding, weighted average remaining contractual term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Schedule of Debt Schedule of Debt [Table Text Block] 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 Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] Title Trading Arrangement, Individual Title Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Requirement to own shares outstanding (as percent) Requirement To Own Shares Outstanding As Percent Requirement To Own Shares Outstanding As Percent Restatement Determination Date: Restatement Determination Date [Axis] Stock-based compensation Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Non-PEO NEO Non-PEO NEO [Member] Options outstanding, intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value Schedule of Other Long Term Assets Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] Current portion of mine reclamation liability Less current portion Asset Retirement Obligation, Current Name Trading Arrangement, Individual Name Award Type [Domain] Award Type [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Canada CANADA Compensation Amount Outstanding Recovery Compensation Amount Face amount Debt Instrument, Face Amount Schedule of Revenue from External Customers Attributed by Country Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Expected dividend rate Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate Recovery of Erroneously Awarded Compensation Disclosure [Line Items] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Name Awards Close in Time to MNPI Disclosures, Individual Name Non-vested shares, beginning balance (in dollars per share) Non-vested shares, ending balance (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 Restricted cash, long-term Restricted Cash, Noncurrent Weighted-average number of common shares outstanding: Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Highview Enterprises Limited Highview Enterprises Limited [Member] Highview Enterprises Limited [Member] Spare parts, net Other Inventories, Spare Parts, Gross Revolving credit agreement Secured Revolving Credit Facility [Member] Secured Revolving Credit Facility Options vested, intrinsic value Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Income Statement Location [Axis] Statement of Income Location, Balance [Axis] PSU expense Performance Share Units Performance Shares [Member] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Balance Sheet Location [Domain] Statement of Financial Position Location, Balance [Domain] Inventories Increase (Decrease) in Inventories Revolving credit facility Line of Credit, Current Inventories, net Total inventories, net Inventory, Net Amortization of debt discount and debt issuance costs Amortization of Debt Issuance Costs and Discounts Minimum Minimum [Member] Five Forks Mine Five Forks Mine [Member] Five Forks Mine (Loss) Earnings Per Common Share Earnings Per Share, Policy [Policy Text Block] Principal payments on notes payable Repayments of Notes Payable Operating expenses: Cost of Revenue [Abstract] Accretion Asset Retirement Obligation, Accretion Expense Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Company Selected Measure Name Company Selected Measure Name Long-term debt Long-Term Debt and Lease Obligation, Including Current Maturities Debt Obligations Debt Disclosure [Text Block] Preferred stock: par value of $0.001 per share, 50,000,000 shares authorized, none issued or outstanding Preferred Stock, Value, Issued Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Operating cash flows from operating leases Operating Lease, Payments Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] All Executive Categories All Executive Categories [Member] Common stock: par value of $0.001 per share, 100,000,000 shares authorized, 47,494,404 and 47,348,394 shares issued, and 42,876,258 and 42,730,248 shares outstanding at March 31, 2026 and December 31, 2025, respectively Common Stock, Value, Issued Finance lease right-of-use assets, net of accumulated amortization Finance Lease, Right-of-Use Asset, after Accumulated Amortization Mine reclamation liabilities Mine Reclamation and Closing Liability, Noncurrent Other long-term assets, net: Other Assets, Noncurrent [Abstract] Diluted (in shares) Diluted weighted-average shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Commitments and contingencies (Note 6) Commitments and Contingencies Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Outstanding, weighted-average remaining contractual term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms Business Combination [Axis] Business Combination [Axis] Entity Small Business Entity Small Business Other Other Long-Term Debt Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Document Transition Report Document Transition Report CTB Loan CTB Loan [Member] CTB Loan Operating lease, right-of-use asset, statement of financial position [Extensible Enumeration] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Ownership interest, percent (as percent) Equity Method Investment, Ownership Percentage Line of credit facility, preclosure fee percentage Line of Credit Facility, Preclosure Fee Percentage Line of Credit Facility, Preclosure Fee Percentage Underlying Securities Award Underlying Securities Amount Mine reclamation asset, net Mine Reclamation Asset Mine Reclamation Asset Equity Component [Domain] Equity Component [Domain] Document Period End Date Document Period End Date PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Acquisition of mine development costs Acquisition of Mine Development Costs Acquisition of Mine Development Costs Income Taxes Income Tax Disclosure [Text Block] Borrowings on revolving credit facility Proceeds from Lines of Credit Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] Short-term lease cost Short-Term Lease, Cost Estimated fair value Debt Instrument, Fair Value Disclosure Operating lease, liability, noncurrent, statement of financial position [Extensible List] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Scenario [Axis] Scenario [Axis] Options exercisable, weighted average remaining contractual term (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Document Type Document Type Name Outstanding Recovery, Individual Name Additional paid-in capital Additional Paid in Capital Product and Service [Axis] Product and Service [Axis] Upfront Customer Consideration Upfront Payments from Contract with Customer Upfront Payments from Contract with Customer Variable lease cost Variable Lease, Cost All Individuals All Individuals [Member] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Receivables Increase (Decrease) in Receivables Options vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Name Forgone Recovery, Individual Name Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Line of credit facility, commitment fee percentage Line of Credit Facility, Unused Capacity, Commitment Fee Percentage Other Other Receivables, Net, Current Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Repurchase of common stock to satisfy tax withholdings Payment, Tax Withholding, Share-Based Payment Arrangement Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Intangible Asset, Finite-Lived [Table] Intangible Asset, Finite-Lived [Table] Current liabilities: Liabilities, Current [Abstract] Geographical [Axis] Geographical [Axis] Lessee, Lease, Description [Line Items] Lessee, Lease, Description [Line Items] Total operating expenses Operating Expenses Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Beginning balance (in shares) Ending balance (in shares) Shares, Outstanding Loss on sale of assets Loss on sale of long-term assets, net Gain (Loss) on Disposition of Assets Line of credit facility, management fee percentage Line Of Credit Facility, Percentage Of Collateral Management Fee Of Outstanding Balance Line Of Credit Facility, Percentage Of Collateral Management Fee Of Outstanding Balance Schedule of Related Party Transactions, by Related Party [Table] Related Party Transaction [Table] Diluted (in dollars per share) (Loss) earnings per share - diluted (in dollars per share) Earnings Per Share, Diluted Forecast Forecast [Member] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Receivables, net Receivables, net Accounts Receivable, after Allowance for Credit Loss, Current Title of 12(b) Security Title of 12(b) Security Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Supplemental disclosure of non-cash investing and financing activities: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Treasury stock (in shares) Beginning balance (in shares) Ending balance (in shares) Treasury Stock, Common, Shares (Loss) income per common share (Note 1): Earnings Per Share [Abstract] Total other income (expense) Nonoperating Income (Expense) Distributions from equity method investee in excess of cumulative earnings Proceeds from Equity Method Investment, Distribution, Return of Capital Corbin Facilities Corbin Facilities [Member] Corbin Facilities Options exercised (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Award Timing Disclosures [Line Items] Schedule of Change in Asset Retirement Obligation Schedule of Change in Asset Retirement Obligation [Table Text Block] Schedule of Inventory Schedule of Inventory, Current [Table Text Block] Loan due Long-Term Debt, Gross Options granted (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Lessee, operating lease, renewal term Lessee, Operating Lease, Renewal Term Property, plant and equipment, net of accumulated depreciation of $31,289 and $28,375, respectively Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Stockholders' Equity Equity [Text Block] Net (loss) income Net (loss) income Net (loss) income Net Income (Loss) Attributable to Parent Expiration Date Trading Arrangement Expiration Date Vesting period (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Adoption Date Trading Arrangement Adoption Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Contract assets outstanding Contract with Customer, Asset, after Allowance for Credit Loss Entity Current Reporting Status Entity Current Reporting Status Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Operating (loss) income Operating Income (Loss) Retained earnings Retained Earnings (Accumulated Deficit) Name of Property [Axis] Name of Property [Axis] Schedule of Allocation of Compensation Expense Share-Based Payment Arrangement, Cost by Plan [Table Text Block] Through January 2026 Through January 2026 [Member] Through January 2026 Balance Sheet Statement of Financial Position [Abstract] 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] Executive Category: Executive Category [Axis] Asset retirement obligations, long-term Asset Retirement Obligations, Noncurrent Finance lease obligations, current Finance Lease, Liability, Current Current Fiscal Year End Date Current Fiscal Year End Date Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Schedule of Accounts Receivables Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] 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] Statement [Table] Statement [Table] Other income Other Nonoperating Income (Expense) Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Cash flows from financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Cash paid for amounts included in the measurement of lease liabilities: Cash Flow Lessee [Abstract] Cash Flow Lessee Variable Rate [Domain] Variable Rate [Domain] Promissory Note B Promissory Note B [Member] Promissory Note B Long-term finance lease obligations Finance Lease, Liability, Noncurrent Tinuum Group, LLC Tinuum Group, LLC [Member] Tinuum Group, LLC [Member] Total shares excluded from diluted shares outstanding (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount All Adjustments to Compensation All Adjustments to Compensation [Member] Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities, Current Amendment Flag Amendment Flag Other current liabilities: Other Liabilities, Current [Abstract] Treasury stock, at cost: 4,618,146 and 4,618,146 shares as of March 31, 2026 and December 31, 2025, respectively Treasury Stock, Common, Value Other Commitments [Table] Other Commitments [Table] Leases Lessee, Operating Leases [Text Block] Termination Date Trading Arrangement Termination Date Net cash provided by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] After January 2026 After January 2026 [Member] After January 2026 Receivable [Domain] Receivable [Domain] Weighted-average discount rate - operating leases Operating Lease, Weighted Average Discount Rate, Percent Schedule of Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Basic (in shares) Basic weighted-average number of common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Cost of revenue, exclusive of depreciation and amortization Cost of Product and Service Sold Schedule of Calculations of Basic and Diluted (Loss) Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Restricted cash, long-term Restricted Cash and Cash Equivalent, Noncurrent Options exercisable (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number Related Party Transaction [Domain] Related Party Transaction [Domain] Subsequent Events [Abstract] Subsequent Events [Abstract] Segment Reporting [Abstract] Segment Reporting [Abstract] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Operating lease, expense Operating Lease, Expense Debt Disclosure [Abstract] Debt Disclosure [Abstract] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Entity Tax Identification Number Entity Tax Identification Number Scenario [Domain] Scenario [Domain] Supply agreement performance bond outstanding amount Supply Agreement, Performance Bond Outstanding Amount Supply Agreement, Performance Bond Outstanding Amount Unamortized debt discounts Unamortized discount Debt Instrument, Unamortized Discount Options outstanding, start of year (in dollars per share) Options outstanding, end of year (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares issued (in shares) Common Stock, Shares, Issued Weighted-average remaining lease term - operating leases Operating Lease, Weighted Average Remaining Lease Term Corbin Facility Corbin Facility [Member] Corbin Facility Options granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Use of Estimates Use of Estimates, Policy [Policy Text Block] Operating cash flows from finance leases Finance Lease, Interest Payment on Liability Interest expense Interest Expense, Nonoperating Trading Arrangement: Trading Arrangement [Axis] Total Shareholder Return Amount Total Shareholder Return Amount Subsequent Events Subsequent Events [Text Block] Insider Trading Arrangements [Line Items] Security Exchange Name Security Exchange Name Total Liabilities Liabilities Change in accrued purchases for property and equipment Capital Expenditures Incurred but Not yet Paid Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Prepaid expenses Prepaid Expense, Current Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Other current liabilities Total other current liabilities Other Liabilities, Current Operating lease, accumulated amortization Operating Lease, Right-of-Use Asset, Accumulated Amortization Operating Lease, Right-of-Use Asset, Accumulated Amortization Surety bond amount Surety Agreement, Bond Amount Surety Agreement, Bond Amount Statement [Line Items] Statement [Line Items] Triggering Event [Line Items] Triggering Event [Line Items] Triggering Event Variable Rate [Axis] Variable Rate [Axis] Unamortized debt issuance costs Unamortized Debt Issuance Expense Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash Cash and Cash Equivalent Consumables Consumables [Member] Consumables [Member] Counterparty Name [Axis] Counterparty Name [Axis] Common Stock Common Stock [Member] Vested (in shares) Vested / Settled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Promissory Note A Promissory Note A [Member] Promissory Note A Increase (decrease) in Cash and Restricted Cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Add: dilutive effect of equity instruments (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Current portion of long-term debt obligations Notes Payable, Current