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Investments - BKV-BPP Cotton Cove Joint Venture (Details) $ in Thousands	Jul. 31, 2025 USD ($)	Jul. 10, 2025 USD ($)	Jul. 09, 2025 USD ($)
BKV-BPP Cotton Cove
Schedule of Equity Method Investments [Line Items]
Percentage of noncontrolling interest (percent)	0.49
BKV-BPP Cotton Cove | BPPUS
Schedule of Equity Method Investments [Line Items]
Payments to acquire interest in joint venture	$ 3,600
Return of capital		$ 5,400
Equity method investments			$ 8,600
BKV-BPP Cotton Cove
Schedule of Equity Method Investments [Line Items]
Payments to acquire interest in joint venture	$ 3,800		3,300
Expenditures paid by BKV dCarbon Ventures on behalf of BKV-BPP Cotton Cove			$ 100
Ownership interest	51.00%

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