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[Member] C Squared Solutions, Inc. 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Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Customer [Axis] Customer [Axis] Common stock, $0.01 par value; 500,000 authorized shares; 109,417 and 96,872 shares issued and outstanding as of June 30, 2026 and December 31, 2025, respectively Common Stock, Value, Issued 2027 Lessee, Operating Lease, Liability, to be Paid, Year One Net share settlements, equity-based compensation Payment, Tax Withholding, Share-Based Payment Arrangement Schedule of Long-Term Debt Instruments Schedule of Long-Term Debt Instruments [Table Text Block] NGPL TXOK Basis Natural Gas, NGPL TXOK [Member] Natural Gas, NGPL TXOK Natural gas properties and equipment Oil and Gas, Full Cost Method, Property and Equipment, after Accumulated Depletion [Abstract] Line of Credit Line of Credit [Member] Restatement Determination Date Restatement Determination Date Allowance for credit losses Accounts Receivable, Allowance for Credit Loss Amendment Flag Amendment Flag Current liabilities Liabilities, Current [Abstract] Weighted average price (in USD per unit) Derivative, Average Price Per Unit Derivative, Average Price Per Unit Diluted (in shares) Weighted Average Number of Shares Outstanding, Attributable to Majority Stockholders, Diluted Weighted Average Number of Shares Outstanding, Attributable to Majority Stockholders, Diluted Contract price to be paid, contract termination, before manufacturing percentage Contract Price To Be Paid, Contract Termination, Before Manufacturing, Percentage Contract Price To Be Paid, Contract Termination, Before Manufacturing, Percentage Transco St 85 (Z4) Basis Natural Gas, Transco St 85 (Z4) Basis [Member] Natural Gas, Transco St 85 (Z4) Basis Issuance of common stock to BPPUS Stock Issued During Period, Value, Acquisitions Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Liabilities settled Asset Retirement Obligation, Liabilities Settled Property, Plant, and Equipment [Abstract] Entity Address, State or Province Entity Address, State or Province PEO Total Compensation Amount PEO Total Compensation Amount Financial assets Assets, Fair Value Disclosure [Abstract] BPPUS Banpu Power US Corporation ("BPPUS") [Member] Banpu Power US Corporation ("BPPUS") Capital expenditures Segment Reporting, Long-Lived Asset, Expenditure for Addition Basic (in shares) Basic weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Less: current portion of long-term debt Long-Term Debt, Principal Value, Current Maturities Long-Term Debt, Principal Value, Current Maturities 2030 Lessee, Operating Lease, Liability, to be Paid, Year Four Asset acquisition, consideration transferred Asset Acquisition, Consideration Transferred Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Class of Stock [Axis] Class of Stock [Axis] Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, 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Rights (SARs) [Member] Other Commitments [Domain] Other Commitments [Domain] Commodity derivative liability Derivative Liabilities, Non-Performance Risk Adjustment Derivative Liabilities, Non-Performance Risk Adjustment City Area Code City Area Code Marketing expense Marketing Expense Distributions payable to noncontrolling interest Temporary Equity, Increase (Decrease) in Distribution Payable Temporary Equity, Increase (Decrease) in Distribution Payable Name Forgone Recovery, Individual Name Non-GAAP Measure Description Non-GAAP Measure Description [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] Entity [Domain] Entity [Domain] Issuance of common stock (in shares) Stock Issued During Period, Shares, New Issues Oil, gas, and power production and other taxes payable Accrual for Taxes Other than Income Taxes, Current Customer Contracts Customer Contracts [Member] 2028 Contractual Obligation, to be Paid, Year Two Stock-based compensation Share-Based Payment Arrangement, Expense Offset Adjustments Derivative Asset, Subject to Master Netting Arrangement, Liability Offset BKV dCarbon Project, LLC BKV dCarbon Project, LLC [Member] BKV dCarbon Project, LLC Location, Statement of Financial Position, Activity, Capitalization [Axis] Location, Statement of Financial Position, Activity, Capitalization [Axis] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Granted (in USD 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 Subsequent Event Type [Domain] Subsequent Event Type [Domain] Payables and Accruals [Abstract] Revision of Prior Period [Domain] Revision of Prior Period [Domain] Forfeited (in USD per 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Liabilities, mezzanine equity, and equity Liabilities and Equity [Abstract] Other Commitments [Table] Other Commitments [Table] Inventory Inventory, Net Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Supplemental cash flow information: Supplemental Cash Flow Information [Abstract] PEO Name PEO Name Temporary equity issued (in units) Temporary Equity, Shares Issued Leasehold improvements Leasehold Improvements [Member] Long-Lived Asset, Class [Axis] Long-Lived Asset, Class [Axis] Payments on RBL Credit Agreement Repayments of Secured Debt Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] BKV-BPP Power BKV-BPP Power Joint Venture [Member] BKV-BPP Power Joint Venture Entity Tax Identification Number Entity Tax Identification Number Other Commitments [Line Items] Other Commitments [Line Items] Common stock issued upon vesting of RSUs, net of shares withheld for income taxes (in shares) 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