Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Inventory financing obligation Other Derivative Assets, Fair Value Disclosure Other Derivative Assets, Fair Value Disclosure Weighted average number of common shares outstanding: Denominator for earnings per share: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Statistical Measurement [Domain] Statistical Measurement [Domain] Additional notes issued percentage Debt Instrument, Issued, Percentage Price at Par Represents the percentage price at par for debt instrument issued. Amount of Realized Gain (Loss) Recognized in Gain (Loss) on Derivative Instruments Realized Gain (Loss) [Member] Realized gain (loss). Equity-based compensation and other items Non Cash Equity Based Compensation And Other Non Cash Item Non-cash equity based compensation and other non-cash items Unrealized (gain) loss on derivative instruments Unrealized Gain (Loss) on Derivatives and Commodity Contracts Title of 12(b) Security Title of 12(b) Security Subsequent Event Subsequent Event [Member] Carrying Value Reported Value Measurement [Member] Document Fiscal Year Focus Document Fiscal Year Focus Gross Amounts Offset Derivative Liability, Subject to Master Netting Arrangement, Asset Offset Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) [Table] Adjustment to Compensation, Amount Adjustment to Compensation Amount Amount of Unrealized Gain (Loss) Recognized in Gain (Loss) on Derivative Instruments Unrealized Gain (Loss) [Member] Unrealized Gain (Loss) Other Other Assets, Fair Value Disclosure Segment Reporting [Abstract] Segment Reporting [Abstract] Schedule of Recurring Assets and Liabilities Measured at Fair Value Fair Value, Assets Measured on Recurring Basis [Table Text Block] Common stock: par value $0.01 per share, 700,000,000 shares authorized, and 87,843,035 and 86,776,552 shares issued and outstanding as of June 30, 2026 and December 31, 2025, respectively. 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Proceeds from DOE Loan Proceeds From Department Of Energy Loan The cash inflow from a Department Of Energy (DOE) loan. LCM / LIFO (gain) loss Gain (Loss), Effect Of LIFO Liquidation And Inventory Write-Down Gain (Loss), Effect Of LIFO Liquidation And Inventory Write-Down Other Commitments [Abstract] Other Commitments [Abstract] Proceeds from sale of business, net Proceeds from Divestiture of Businesses Accounts receivable, allowance for credit loss Accounts Receivable, Allowance for Credit Loss Amendment Flag Amendment Flag Consolidated Entities [Axis] Consolidated Entities [Axis] Current liabilities: Liabilities, Current [Abstract] Inventory [Axis] Inventory [Axis] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Oil and Gas Delivery Commitments and Contracts, Oil Producing Property [Domain] Oil and Gas Delivery Commitments and Contracts, Oil Producing Property [Domain] Noncontrolling interest adjustments Non-Controlling Interest Adjustments Non-Controlling Interest Adjustments Other comprehensive income: Other Comprehensive Income (Loss), Net of Tax [Abstract] Consolidated Entities [Domain] Consolidated Entities [Domain] Payments on inventory financing Purchase and Supply Commitment, Supplies Payments Purchase and Supply Commitment, Supplies Payments Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Inventory Financing Agreements Supply And Exchange Agreements [Text Block] The entire disclosure for supply and exchange agreements. 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Basic (in shares) Weighted average number of basic common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Cash distribution, priority to other members, until preferred return, percentage Cash Distribution, Priority to Other Members, Until Preferred Return The percent of other members to whom priority given on cash distribution until preferred unit holders receive preferred return. Debt instrument collateral amount Debt Instrument, Collateral Amount Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Total current liabilities Liabilities, Current Subsegments Consolidation Items [Axis] Subsegments Consolidation Items [Axis] Work in process Inventory, Work in Process, Net of Reserves Crack spread swaps - sales 2027 Crack Spread Swaps 2027 Maturity [Member] Represents the information pertaining to crack spread swaps maturing in 2027. Accrued salaries, wages and benefits Increase (Decrease) in Accrued Salaries Maximum amount of capitalized accrued interest allowed Maximum Amount Of Capitalized Accrued Interest Allowed Maximum amount of interest costs capitalized allowed. Repayments of borrowings - MRL Asset Financing Arrangements Repayments Of Mrl Asset Financing Arrangement The cash outflow for the settlement of obligation drawn from a MRL Asset Financing Arrangements. Derivative liabilities Gross Amounts of Recognized Liabilities Derivative liabilities Derivative Liability, Current Entity Address, City or Town Entity Address, City or Town Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Reclassification Of warrant equity to common stock and additional paid-in capital Common Stock, Reclassified From Warrants Common Stock, Reclassified From Warrants Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Basis of Accounting Basis of Accounting, Policy [Policy Text Block] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Revenue from Contract with Customer Benchmark Revenue from Contract with Customer Benchmark [Member] Inventories Inventory, Net [Abstract] Level 2 Fair Value, Inputs, Level 2 [Member] Other income (expense): Nonoperating Income (Expense) [Abstract] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Senior secured revolving credit facility Line of Credit Facility, Maximum Borrowing Capacity Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Parent Company and Restricted Subsidiaries Parent Company [Member] MRHL MontanaRenewablesHoldingsLlc [Member] Represents information pertaining to Montana Renewables Holdings LLC. Total derivative liabilities Derivative And Other Liabilities, Fair Value Disclosure Derivative And Other Liabilities, Fair Value Disclosure Subsequent Event Type [Axis] Subsequent Event Type [Axis] Settlement of restricted stock units (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross Concentration Risk Type [Axis] Concentration Risk Type [Axis] Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] New Accounting Standards New Accounting Pronouncements, Policy [Policy Text Block] Proceeds from borrowings — MRL revolving credit agreement Proceeds From MRL Revolving Credit Agreement Proceeds From MRL Revolving Credit Agreement Schedule of Reportable Segment Information Segment Reporting [Table Text Block] Total other comprehensive income Other comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Redeemable Noncontrolling Interest Noncontrolling Interest Disclosure [Text Block] Reportable segment information Major product category sales Segment Reporting, Profit (Loss) [Abstract] Total debt Long-Term Debt Proceeds from debt, net Proceeds from Debt, Net of Issuance Costs Montana refinery asset financing arrangement Montana Refinery Asset Financing Arrangement [Member] Represents the information pertaining to Montana Refinery Asset Financing Arrangement. Document Period End Date Document Period End Date Changes in assets and liabilities Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash provided by (used in) investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Face amount Debt Instrument, Face Amount Security Exchange Name Security Exchange Name Capital expenditures included in accounts payable Construction in Progress Expenditures Incurred but Not yet Paid Immediate cash payment Proceeds from Noncontrolling Interests Eliminations Consolidation, Eliminations [Member] Oil and Gas Delivery Commitments and Contracts [Axis] Oil and Gas Delivery Commitments and Contracts [Axis] Total recurring liabilities at fair value Liabilities, Fair Value Disclosure Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] Current portion of operating lease liabilities Operating Lease, Liability, Current Accrued interest payable Interest Payable, Current Segment Reporting Segment Reporting, Policy [Policy Text Block] Sale proceeds from sale leaseback Sale Leaseback Transaction Failed Sale Proceeds Amount proceeds from sale and lease back transaction which is resulted in failed sale. Proceeds from asset financing arrangements Proceeds From Asset Financing Arrangements Amount of cash received during the period from financing arrangements secured by specific assets, including proceeds from equipment financing, vendor financing, hirepurchase agreements, and other assetbacked financing transactions. Excludes proceeds from general borrowing arrangements not specifically tied to an identified asset. Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Equity and Earnings Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Earnings per share: Earnings per share in net loss: Earnings Per Share [Abstract] Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Offsetting Liabilities Offsetting Liabilities [Line Items] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Redeemable Noncontrolling Interest [Table] Redeemable Noncontrolling Interest [Table] Schedule of Product Information Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Table Text Block] Total liabilities Liabilities Trading Symbol Trading Symbol Thereafter Long Term Debt Maturities Repayments Of Principal After Year Four Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Computation of basic and diluted earnings per limited partner unit Computation Of Basic And Diluted Earnings Per Limited Partner Unit [Abstract] Computation of basic and diluted earnings per limited partner unit. Other taxes payable Increase (Decrease) in Property and Other Taxes Payable Additions to property, plant and equipment Payments to Acquire Property, Plant, and Equipment 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] Unrestricted Subsidiaries Unrestricted Unrestricted Subsidiaries [Member] Unrestricted Subsidiaries Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Company Selected Measure Name Company Selected Measure Name Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Non-cash interest expense Amortization of Debt Issuance Costs and Discounts Crack spread swaps - purchases 2026 Crack Spread Swaps 2026 Maturity - Purchases [Member] Crack Spread Swaps 2026 Maturity - Purchases Offsetting Liabilities [Table] Offsetting Liabilities [Table] Unrealized gain (loss) on derivative instruments Unrealized (gain) loss on derivatives Unrealized Gain (Loss) on Derivatives Crack spread swaps - sales 2026 Crack Spread Swaps 2026 Maturity - Sales [Member] Represents the information pertaining to crack spread swaps maturing in 2026. Waxes Waxes [Member] Waxes. Total Principal Payments Long-Term Debt, Gross Payments on other financing obligations Payments on other financing obligations Payments on other financing obligations Schedule of Notional Contract Volumes Related to Outstanding Derivative Instruments Derivatives Not Designated as Hedging Instruments [Table Text Block] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Credit Facility [Domain] Credit Facility [Domain] Operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Compensation Amount Outstanding Recovery Compensation Amount Cash distribution priority to preferred unit holders, until preferred return, percentage Cash Distribution, Priority to Preferred Unit Holders, Until Preferred Return The percent of preferred unit holders to whom priority given on cash distribution until preferred units receive preferred return. Individual: Individual [Axis] Warrants Warrant [Member] Diluted (in shares) Weighted average number of diluted common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Entity Emerging Growth Company Entity Emerging Growth Company Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Disposal Group Name [Domain] Disposal Group Name [Domain] Notional contract volumes Derivative, Nonmonetary Notional Amount, Volume Underlying Security Market Price Change Underlying Security Market Price Change, Percent Proceeds from agreement Proceeds from Lines of Credit Derivatives Derivative Instruments and Hedging Activities Disclosure [Text Block] Supply & Offtake Agreements Supply & Offtake Agreements [Member] Represents the information pertaining to supply & offtake agreements. Total derivative instruments Derivative Liability, Subject to Master Netting Arrangement, before Offset Line of credit facility, current borrowing capacity Line of Credit Facility, Current Borrowing Capacity Gross profit (loss) Gross profit (loss) Gross Profit Schedule of Net Changes in Fair Value of Financial Assets and Liabilities Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Deferred payment to be received in 2026 Disposal Group, Not Discontinued Operation, Deferred Payment Amount of consideration receivable from sale of of disposal group not discontinued operations. Cash and Cash Equivalents and Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Total derivative assets Derivative And Other Assets, Fair Value Disclosure Derivative And Other Assets, Fair Value Disclosure Award Timing Predetermined Award Timing Predetermined [Flag] Restricted cash Restricted Cash, Current Letters of credit outstanding, amount Letters of Credit Outstanding, Amount Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Total debt Debt and Lease Obligation Level 1 Fair Value, Inputs, Level 1 [Member] Effective tax rate compared Effective Income Tax Rate Reconciliation, Percent Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Redeemable Noncontrolling Interest Redeemable Noncontrolling Interest [Line Items] Inventory, Current [Table] Inventory, Current [Table] All Executive Categories All Executive Categories [Member] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Repayments of borrowings — revolving credit facility Repayments of Long-Term Lines of Credit Redeemable noncontrolling interest and other equity instruments Redeemable noncontrolling interest Redeemable Noncontrolling Interest, Equity, Carrying Amount Operating lease right-of-use assets Operating Lease, Right-of-Use Asset Concentration Risk Type [Domain] Concentration Risk Type [Domain] Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements Number of reportable segments not disclosed flag Number Of Reportable Segments Not Disclosed Flag N/A Offsetting Assets [Table] Offsetting Assets [Table] Borrowings under senior notes Senior Notes, Noncurrent Schedule of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] US Government Agency Insured Loans US Government Agency Insured Loans [Member] Accumulated amortization, deferred debt issuance costs Accumulated Amortization, Debt Issuance Costs Debt Disclosure Debt Disclosure [Abstract] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Current portion of long-term debt Less current portion of long-term debt Long-Term Debt and Lease Obligation, Current Segments and Related Information Segment Reporting [Text Block] Senior secured revolving credit facility Long-Term Line of Credit Expiration Date Trading Arrangement Expiration Date 2030 Long-Term Debt, Maturity, Year Four US Department of Energy facility US Department Of Energy Facility [Member] Represents information pertaining to US Department of Energy (the "DOE") facility. Cost of Goods and Service Benchmark Cost of Goods and Service Benchmark [Member] Income Statement Location [Axis] Location, Statement of Income, Balance [Axis] Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] 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] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Unrestricted Subsidiaries Unrestricted Subsidiaries [Abstract] Unrestricted Subsidiaries [Abstract] Unamortized (discounts) and premium, net Debt Instrument, Unamortized Discount (Premium), Net Exercise Price Award Exercise Price Investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Schedule of Equity Method Investments Schedule of Equity Method Investments [Line Items] Segments and Related Information Segment Reporting [Line Items] Number of tranches Number Of Tranches Number of tranches. Document Quarterly Report Document Quarterly Report Derivative assets: Derivative Asset [Abstract] 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] Segments [Domain] Segments [Domain] Accounts receivable, net: Accounts Receivable, after Allowance for Credit Loss Long-Term Debt Debt Disclosure [Text Block] Repayment of debt Repayments of Long-Term Debt Reconciling items to net loss: Reconciling Items to Net Income [Abstract] Reconciling items to net income. Unamortized debt issuance costs and debt (discounts) premiums, net Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Supplier Concentration Risk Supplier Concentration Risk [Member] Derivative liabilities: Derivative Liability [Abstract] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity Component [Domain] Equity Component [Domain] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Other current liabilities Other Current Liabilities Net Amount of liabilities classified as other, net which are due within one year or the normal operating cycle, if longer. Adoption Date Trading Arrangement Adoption Date Inventories Inventory, Policy [Policy Text Block] Sale of industrial portion Disposal Group, Including Discontinued Operation, Consideration Fixed interest rate (in percent) Debt Instrument, Interest Rate, Stated Percentage Total stockholders' equity Beginning balance Ending balance Stockholders' equity Equity, Attributable to Parent Total other income (expense) Nonoperating Income (Expense) Debt extinguishment costs Deferred Debt Issuance Cost, Writeoff Four Suppliers Four Suppliers [Member] Four major supplies Offsetting Assets Offsetting Assets [Line Items] ASSETS Assets [Abstract] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Accounting Policies [Abstract] Accounting Policies [Abstract] Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Insider Trading Policies and Procedures [Line Items] Finance lease obligations Finance Lease, Liability Repayments of borrowings — MRL revolving credit agreement Repayments Of MRL Revolving Credit Agreement Amount of repayments of MRL revolving credit agreement. Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Prepaid expenses and other current assets Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Derivative Instruments, Gain (Loss) Derivative Instruments, Gain (Loss) [Line Items] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] External customers Revenue, Segment Benchmark [Member] Entity Central Index Key Entity Central Index Key All Adjustments to Compensation All Adjustments to Compensation [Member] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Net cash provided by (used in) operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation 2026 Long-Term Debt, Maturity, Remainder of Fiscal Year Income Statement [Abstract] Income Statement [Abstract] Stockholders' equity: Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Ownership [Axis] Ownership [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Operating costs and expenses: Operating Expenses [Abstract] Issued and sold preferred units Temporary Equity, Shares Issued During Period, New Issues The number of securities classified as temporary equity that are issued during the period. Inter-segment sales eliminations Intersegment Eliminations [Member] Unrestricted Subsidiaries Unrestricted Subsidiaries [Text Block] The entire disclosure for unrestricted subsidiaries. Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Shreveport Supply and Offtake Agreement Shreveport Supply And Offtake Agreement [Member] Represents information pertaining to Shreveport Supply And Offtake Agreement. City Area Code City Area Code Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] Subsequent Events Subsequent Events [Text Block] Name Forgone Recovery, Individual Name Finished goods Inventory, Finished Goods, Net of Reserves Supplier [Domain] Supplier [Domain] Fixed charge coverage ratio Line of Credit Facility, Fixed Charge Coverage Ratio Line of Credit Facility, Fixed Charge Coverage Ratio Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Statement [Line Items] Statement [Line Items] Total assets Assets Pension plan investments Defined Benefit Plan, Plan Assets, Amount Stock-based compensation expense Employee Benefits and Share-Based Compensation Operating Segments Operating Segments [Member] Defined benefit pension and retiree health benefit plans Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax and Reclassification Adjustment, Attributable to Parent Interest expense Interest expense Interest Expense, Nonoperating Other assets Increase (Decrease) in Other Operating Assets Description of the Business Nature of Operations [Text Block] PEO PEO [Member] Beginning balance (in shares) Ending balance (in shares) Shares, Outstanding 2028 Long-Term Debt, Maturity, Year Two Measurement Basis [Axis] Measurement Basis [Axis] Gross Amounts Offset Derivative Asset, Subject to Master Netting Arrangement, Liability Offset Other long-term liabilities Other Liabilities, Noncurrent Total purchase price Proceeds From Sale Of Equipment In Sale and Lease Back Transaction The amount of cash outflow from sale of equipment in a sale and lease back transaction. Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Exercise of warrants (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Subsequent Event Type [Domain] Subsequent Event Type [Domain] Long-term operating lease liabilities Operating Lease, Liability, Noncurrent Other taxes payable Taxes Payable, Current Accumulated Deficit Retained Earnings [Member] Type Of Gain (Loss) [Domain] Type Of Gain (Loss) [Domain] Type Of Gain (Loss) [Domain] Senior secured revolving credit facility Revolving credit facility Revolving Credit Facility [Member] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock, shares, outstanding (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Schedule of Carrying Value and Estimated Fair Value, Carried at Adjusted Historical Cost Fair Value, by Balance Sheet Grouping [Table Text Block] Debt issuance costs, debt discounts and premiums Payments of Debt Issuance Costs Diluted (in USD per share) Earnings Per Share, Diluted Summary of net changes in fair value of the company's level 3 financial assets and liabilities Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] Entity Current Reporting Status Entity Current Reporting Status Net cash provided by (used in) financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Numerator for basic and diluted earnings per share: Numerator For Basic And Diluted Earnings Per Limited Partner Unit [Abstract] Numerator for basic and diluted earnings per limited partner unit. Total Shareholder Return Amount Total Shareholder Return Amount Inter-segment sales Intersubsegment Eliminations [Member] Inventory financing obligation Other Derivative Liabilities, Fair Value Disclosure Other Derivative Liabilities, Fair Value Disclosure Settlement of tax withholdings on equity-based incentive compensation Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Restricted Restricted Subsidiaries [Member] Represents information pertaining to restricted subsidiaries. Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Liabilities: Liabilities, Fair Value Disclosure [Abstract] Crack spread swaps Crack Spread Swaps [Member] crack spread swaps Inventory [Domain] Inventory [Domain] Ownership [Domain] Ownership [Domain] Proceeds from borrowings — revolving credit facility Proceeds from Long-Term Lines of Credit Adjustments to reconcile net loss to net cash provided by (used in) operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] 2029 Long-Term Debt, Maturity, Year Three Schedule of Offsetting Derivative Assets Offsetting Assets [Table Text Block] Financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Sales Revenue from Contract with Customer, Excluding Assessed Tax Property, plant and equipment, net PP&E, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Montana/ Renewables Montana/Renewables Segment [Member] Montana/Renewables Segment Line of credit facility, remaining borrowing capacity Line of Credit Facility, Remaining Borrowing Capacity Distribution for income taxes on allocations, term Distribution for Income Taxes on Allocations, Term The term of distribution for income taxes on allocations to members. Net Amounts of Assets Presented Derivative Asset Inventories Inventory Disclosure [Text Block] Exercise of warrants Stock Issued During Period, Value, Stock Options Exercised Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Underlying Securities Award Underlying Securities Amount RINs incurrence expense Renewable Identification Number Related Expense Amount of expense incurred during the period in relation Renewable Identification Number obligation. Fair Value Estimate of Fair Value Measurement [Member] 8.125% Senior Notes due 2027 Notes due July Two Thousand Twenty Seven at Fixed Rate Eight Point One Two Five Percentage Interest Payments [Member] Notes due July Two Thousand Twenty Seven at Fixed Rate Eight Point One Two Five Percentage Interest Payments Accrued interest payable Increase (Decrease) in Interest Payable, Net Repayments of borrowings — senior notes Repayments of borrowings - senior notes Early Repayment of Senior Debt Other segment expenses Segment Reporting, Other Segment Expenses, Amount Amount of other segment expenses. Other Payment for (Proceeds from) Other Investing Activity Inventories Increase (Decrease) in Inventories Summary of Long-term debt Debt and Lease Obligation [Abstract] Segment Reporting [Table] Segment Reporting [Table] Schedule of Maturities of Long-Term Debt Schedule of Maturities of Long-Term Debt [Table Text Block] Performance Brands Performance Brands Segment [Member] Performance Brands Segment Schedule of Equity Method Investments [Table] Equity Method Investment [Table] Solvents Solvents [Member] Solvents. Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Operating loss Operating Income (Loss) Current Fiscal Year End Date Current Fiscal Year End Date Warrants: 2,000,000 warrants issued and outstanding December 31, 2025 Warrants and Rights Outstanding Gain on sale of business Gain on sale of business Gain on sale of business (Gain) loss on sale of business Gain (Loss) on Disposition of Business Specialty Products and Solutions Specialty Products and Solutions Segment [Member] Specialty products segment. Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Loans Insured or Guaranteed by Government Authorities [Domain] Loans Insured or Guaranteed by Government Authorities [Domain] 2026 Notes, 2027 Notes, 2028 Notes, 2028 Mirror Issuance Notes, 2029 Secured Notes and 2031 Notes 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] Commitment amount upon inventory financing Line of Credit Facility, Maximum Borrowing Capacity, Commitment Amount Upon Inventory Financing Transaction Represents the amount of lender commitments available under the lineofcredit facility that becomes effective upon the consummation of one or more inventory financing transactions, as specified in the applicable credit agreement. Current portion of RINs obligation Current portion RINs Obligation Current portion RINs Obligation 11.00% Senior Notes due 2026 Notes Due July Two Thousand And Twenty Six At Fixed Rate Of Eleven Point Zero Percentage Interest Payments [Member] Represents information pertaining to notes due July two thousand and twenty-six at fixed rate of eleven-point zero percentage interest payments. Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Common stock, shares, issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Fixed charge coverage amount Line of Credit Facility, Fixed Charge Coverage Amount Line of Credit Facility, Fixed Charge Coverage Amount Equity Components [Axis] Equity Components [Axis] Accounts receivable Increase (Decrease) in Accounts Receivable Product and Service [Domain] Product and Service [Domain] Entity Interactive Data Current Entity Interactive Data Current Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Derivative instruments not designated as hedges, gain (loss), net Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Entity Small Business Entity Small Business Comprehensive loss attributable to stockholders' equity Comprehensive Income (Loss), Net of Tax, Attributable to Parent Termination Date Trading Arrangement Termination Date RINs expense Loss Gain Non Cash RINs Expense Loss (Gain), Non-cash RINs expense Temporary equity, preferred return, percentage Temporary Equity, Preferred Return, Percentage The percentage rate used to calculate preferred return on temporary equity. Subsequent Events [Abstract] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Net carrying value Supply and Offtake Agreement Obligation Carrying amount of the Company's obligation under supply and offtake financing arrangements, representing amounts payable under inventory supply and offtake agreements. 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 current liabilities Other Liabilities, Current Other noncurrent assets, net Other Assets, Noncurrent Document Type Document Type Amortization of turnaround costs Amortization of turnaround costs Amortization of turnaround costs Summary of Significant Accounting Policies Fair Value Measurements Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Derivative assets Derivative assets: Derivative Asset, Current Debt extinguishment costs Debt extinguishment costs Gain (Loss) on Extinguishment of Debt Fair Value as of Grant Date Award Grant Date Fair Value Redemption price (as a percent) Debt Instrument, Redemption Price, Percentage Replacement costs over stated LIFO value Excess of Replacement or Current Costs over Stated LIFO Value Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Arrangement Duration Trading Arrangement Duration Subsequent Event [Line Items] Subsequent Event [Line Items] Local Phone Number Local Phone Number Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Net loss before income taxes Net loss 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 Commitments and Contingencies Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Unrestricted Subsidiaries Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block] Executive Category: Executive Category [Axis] Cash distribution, priority given for members after preferred return distribution, percentage Cash Distribution, Priority Given for Members After Preferred Return Distribution The percent of members to whom priority given on cash distribution after preferred unit holders receive preferred return. 9.75% Senior Notes due 2028 Notes Due July Two Thousand Twenty Eight At Fixed Rate Nine Point Seven Five Percentage Interest Payments [Member] The represents the information pertaining to Notes due July two thousand twenty eight at fixed rate of nine point seven five percentage interest payments LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity [Abstract] Inventories Total inventories Inventory Inventory, Net All Award Types Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount MRL Term Loan Credit Agreement MRL Term Loan Credit Agreement [Member] Represents the information pertaining to MRL Term Loan Credit Agreement. 9.75% Senior Notes due 2028 - Mirror Issuance Notes Mirror Issuance Notes Due July Two Thousand And Twenty Eight At Fixed Rate Of Nine Point Seven Five Percentage Interest Payments [Member] Represents information pertaining to mirror issuance notes due July two thousand and twenty eight at fixed rate of nine point seven five percentage interest payments. Fair Value Measurements Fair Value Disclosures [Text Block] Class of warrants outstanding (in shares) Class of Warrant or Right, Outstanding Level 3 Fair Value, Inputs, Level 3 [Member] Supplemental disclosure of cash flow information Supplemental Cash Flow Information [Abstract] Exchange for a percentage interest, percentage Subsidiary, Ownership Percentage, Noncontrolling Owner PEO Name PEO Name Inventory Financing Agreements Oil and Gas, Delivery Commitment [Line Items] Other segment items Segment Reporting, Other Segment Item, Amount Schedule of Unrestricted Subsidiaries Schedule of Unrestricted Subsidiaries [Table Text Block] Tabular disclosure of unrestricted subsidiaries information. Renewable Identification Numbers ("RINs") Obligation RINs, Policy [Policy Text Block] RINs, Policy Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Product Concentration Risk Product Concentration Risk [Member] Inventory method Inventory, Cost Method [Extensible Enumeration] Industrial portion of Royal Purple business Industrial Portion of Royal Purple Business [Member] The represents the information pertaining to the sale of the industrial portion of the Royal Purple business. Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Accounts payable Increase (Decrease) in Accounts Payable 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] Number of major supplier Number of Major Suppliers Number of major suppliers 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] Subsequent Event [Table] Subsequent Event [Table] Equity based compensation Share-Based Payment Arrangement, Noncash Expense Disposal Group Name [Axis] Disposal Group Name [Axis] Net Amounts of Liabilities Presented Derivative Liability, Subject to Master Netting Arrangement, before Offset of Collateral Subsegments Consolidation Items [Domain] Subsegments Consolidation Items [Domain] Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Long-Term Debt, Type [Domain] Long-Term Debt, Type [Domain] 2027 Long-Term Debt, Maturity, Year One Basic (in USD per share) Earnings Per Share, Basic Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Total long-term debt Long-Term Debt, Excluding Current Maturities Schedule of Derivative Instruments Not Designated as Hedges Gains (Losses) Derivative Instruments, Gain (Loss) [Table Text Block] Fuels, asphalt and other by-products Other Specialty Products [Member] Other Specialty Products [Member] Award Type Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Derivative instruments not designated as cash flow hedges Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract] Accumulated deficit Retained Earnings (Accumulated Deficit) 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 [Member] Measurement Basis [Axis] Fair Value Measurement [Domain] RINs mark-to-market loss RINs Mark-To-Market (Gain) Loss RINs Mark-To-Market (Gain) Loss. Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Noncontrolling Interest [Abstract] Noncontrolling Interest [Abstract] Class of warrants issued (in shares) Class of Warrant or Right, Issued Number of warrants or rights issued. Concentration risk, percentage Concentration Risk, Percentage Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Derivative Contract [Domain] Derivative Contract [Domain] 9.25% Senior Notes due 2029 Notes Due July Two Thousand Twenty Nine At Fixed Rate Nine Point Two Five Percentage Interest Payments [Member] The represents the information pertaining to Notes due July two thousand twenty nine at fixed rate of nine point two five percentage interest payments Equity Awards Adjustments Equity Awards Adjustments [Member] Crack spread swaps - sales 2028 Crack Spread Swaps 2028 Maturity [Member] Crack Spread Swaps 2028 Maturity Total liabilities and stockholders' equity Liabilities and Equity Employee Stock Option Share-Based Payment Arrangement, Option [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Proceeds from inventory financing Purchase And Supply Commitment Supplies Proceeds Purchase and Supply Commitment, Supplies Proceeds Segments [Axis] Segments [Axis] 9.75% Senior Notes due 2031 Notes Due January Two Thousand and Thirty One At Fixed Rate Of Nine Point Seven Five Percentage Interest Payments [Member] Represents information pertaining to notes due January two thousand and thirty one at fixed rate of nine point seven five percentage interest payments. Other liabilities Increase (Decrease) in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Proceeds from borrowings — senior notes Proceeds from Issuance of Senior Long-Term Debt Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Inventory financing obligation Supply and Offtake Agreements [Member] Supply and Offtake Agreements [Member] Other income (expense) Other Nonoperating Income (Expense) Other operating expense Other Operating Income (Expense), Net 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] General and administrative General and Administrative Expense Renewable fuels Renewable Fuels [Member] Represents the information pertaining to renewable fuels. Oil and Gas, Delivery Commitment [Table] Oil and Gas, Delivery Commitment [Table] Hierarchy of Recurring Fair Value Measurements Hierarchy Of Recurring Fair Value Measurements [Abstract] Hierarchy of recurring fair value measurements. Accounts receivable, less allowance for credit losses of $1.9 and $1.1, respectively Receivables, Net, Current Temporary equity preferred return, multiple of invested capital Temporary Equity, Preferred Return, Multiple of Invested Capital The multiple of invested capital used for calculation of preferred return on temporary equity. Adjustment to Compensation: Adjustment to Compensation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Supplier [Axis] Supplier [Axis] Shreveport terminal asset financing arrangement Shreveport Terminal Asset Financing Arrangement [Member] Represents the information pertaining to Shreveport Terminal Asset Financing Arrangement. Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Interest paid, net of capitalized interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Hedging Designation [Axis] Hedging Designation [Axis] Corporate expenses Other General Expense Inventory [Line Items] Inventory [Line Items] Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Total recurring assets at fair value Assets, Fair Value Disclosure Long-term debt, less current portion Long-term debt, less current portion Long-Term Debt and Lease Obligation Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Other adjustments to reconcile net loss to cash flow from operating activities Other Noncash Income (Expense) Other noncurrent assets, net Other noncurrent assets, net Amount of net noncurrent assets classified as other. Debt Instruments Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Loans Insured or Guaranteed by Government Authorities [Axis] Loans Insured or Guaranteed by Government Authorities [Axis] Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Turnaround costs Increase (Decrease) In Turnaround Costs Increase (Decrease) In Turnaround Costs Schedule of Offsetting Derivative Liabilities Offsetting Liabilities [Table Text Block] Name Trading Arrangement, Individual Name Liability awards Other Liabilities, Fair Value Disclosure Selling Selling Expense Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Raw materials Inventory, Raw Materials, Net of Reserves Maturities of long-term debt Long-Term Debt, Fiscal Year Maturity [Abstract] Gain (loss) on derivative instruments Realized loss on derivative instruments Gain (Loss) on Derivative Instruments, Net, Pretax Montana terminal asset financing arrangement Montana Terminal Asset Financing Arrangement [Member] Represents the information pertaining to Montana Terminal Asset Financing Arrangement. Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Company Selected Measure Amount Company Selected Measure Amount Derivative instruments not designated as hedges: Not Designated as Hedging Instrument [Member] Depreciation and amortization Depreciation, Depletion and Amortization Temporary equity preferred return, multiple of invested capital annual increases Temporary Equity, Preferred Return, Multiple of Invested Capital, Annual Increase The annual increase in multiple of invested capital used for calculation of preferred return on temporary equity. Entity Address, Address Line Two Entity Address, Address Line Two Statement of Partners' Capital [Abstract] Statement of Partners' Capital [Abstract] Current assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One Income tax (benefit) expense Income tax (benefit) expense Income Tax Expense (Benefit) Cost of sales Cost of Product and Service Sold Award Timing Method Award Timing Method [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] Net loss Net loss Net loss Net Income (Loss) Attributable to Parent Long-Term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Unamortized debt issuance costs Unamortized Debt Issuance Expense Location, Statement of Financial Position, Balance [Axis] Location, Statement of Financial Position, Balance [Axis] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Settlement of restricted stock units Stock Issued During Period, Value, Restricted Stock Award, Gross Titled Inventory Titled Inventory [Member] Represents the information pertaining to titled inventory. Increase (decrease) in cost of sales Inventory, LIFO Reserve, Effect on Income, Net Net loss Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Gross Amounts of Recognized Assets Derivative Asset, Subject to Master Netting Arrangement, before Offset Capitalized accrued interest Accumulated Capitalized Interest Costs Fair value at January 1, Fair value at June 30, Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs Asset financing arrangement Asset financing arrangement Asset financing arrangement Payments on asset financing arrangements Repayments of Asset Financing Arrangements Amount of cash paid during the period to settle obligations under financing arrangements secured by specific assets, including repayments of equipment financing, vendor financing, hirepurchase agreements, and other assetbacked financing transactions. Excludes repayments of general borrowing arrangements not specifically tied to an identified asset. Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Cost Method, LIFO [Member]