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Fair Value Measurements - Fair value of net derivative instruments (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Assets (at fair value): |  |
Commodity derivatives – current portion | $ 8,489 | $ 11,117
Commodity derivatives – noncurrent portion | 0 | 1,189
Liabilities (at fair value): |  |
Commodity derivatives – noncurrent portion | (676) | 0
Fair Value |  |
Assets (at fair value): |  |
Equity instruments | 27,651 | 50,427
Fair Value, Recurring |  |
Assets (at fair value): |  |
Equity instruments |  | 50,427
Commodity derivatives - current portion - Net of fair value presented in CBS | 8,489 | 11,117
Commodity derivatives - noncurrent portion - Net of fair value presented in CBS | 0 | 1,189
Liabilities (at fair value): |  |
Commodity derivatives - current portion - Net fair value presented in CBS | 0 | 0
US Derivative Liability, Non Current, Subject to Master Netting Arrangement, after Offset | (676) | 0
Net derivative instruments | 7,813 | 12,306
Fair Value, Recurring | Common Stock |  |
Assets (at fair value): |  |
Equity instruments | 27,651 | 25,554
Fair Value, Recurring | Preferred Stock |  |
Assets (at fair value): |  |
Equity instruments |  | 24,873
Fair Value, Recurring | Fair Value |  |
Assets (at fair value): |  |
Equity instruments |  | 50,427
Commodity derivatives – current portion | 13,092 | 14,202
Commodity derivatives - current portion offset in the Consolidated Balance Sheet | (4,603) | (3,085)
Commodity derivatives – noncurrent portion | 5,636 | 2,534
Commodity derivatives - noncurrent portion offset in the Consolidated Balance Sheet | (5,636) | (1,345)
Liabilities (at fair value): |  |
Derivative instruments - commodity derivatives | (4,603) | (3,085)
Commodity derivatives - current portion - Offset in Consolidated Balance Sheet | 4,603 | 3,085
Commodity derivatives – noncurrent portion | (6,312) | (1,345)
Warrant liability - noncurrent portion- Offset in the Consolidated Balance Sheet | 5,636 | 1,345
Derivative Asset, Subject to Master Netting Arrangement, Offset | 0 | 0
Net derivative instruments | 7,813 | 12,306
Fair Value, Recurring | Fair Value | Common Stock |  |
Assets (at fair value): |  |
Equity instruments | 27,651 | 25,554
Fair Value, Recurring | Fair Value | Preferred Stock |  |
Assets (at fair value): |  |
Equity instruments |  | 24,873
Fair Value, Recurring | Level 1 | Fair Value |  |
Assets (at fair value): |  |
Equity instruments |  | 25,554
Commodity derivatives – current portion | 0 | 0
Commodity derivatives – noncurrent portion | 0 | 0
Liabilities (at fair value): |  |
Derivative instruments - commodity derivatives | 0 | 0
Commodity derivatives – noncurrent portion | 0 | 0
Net derivative instruments | 0 | 0
Fair Value, Recurring | Level 1 | Fair Value | Common Stock |  |
Assets (at fair value): |  |
Equity instruments | 27,651 | 25,554
Fair Value, Recurring | Level 1 | Fair Value | Preferred Stock |  |
Assets (at fair value): |  |
Equity instruments |  | 0
Fair Value, Recurring | Level 2 | Fair Value |  |
Assets (at fair value): |  |
Equity instruments |  | 24,873
Commodity derivatives – current portion | 13,092 | 14,202
Commodity derivatives – noncurrent portion | 5,636 | 2,534
Liabilities (at fair value): |  |
Derivative instruments - commodity derivatives | (4,603) | (3,085)
Commodity derivatives – noncurrent portion | (6,312) | (1,345)
Net derivative instruments | 7,813 | 12,306
Fair Value, Recurring | Level 2 | Fair Value | Common Stock |  |
Assets (at fair value): |  |
Equity instruments | 0 | 0
Fair Value, Recurring | Level 2 | Fair Value | Preferred Stock |  |
Assets (at fair value): |  |
Equity instruments |  | 24,873
Fair Value, Recurring | Level 3 | Fair Value |  |
Assets (at fair value): |  |
Equity instruments |  | 0
Commodity derivatives – current portion | 0 | 0
Commodity derivatives – noncurrent portion | 0 | 0
Liabilities (at fair value): |  |
Derivative instruments - commodity derivatives | 0 | 0
Commodity derivatives – noncurrent portion | 0 | 0
Net derivative instruments | 0 | 0
Fair Value, Recurring | Level 3 | Fair Value | Common Stock |  |
Assets (at fair value): |  |
Equity instruments | $ 0 | 0
Fair Value, Recurring | Level 3 | Fair Value | Preferred Stock |  |
Assets (at fair value): |  |
Equity instruments |  | $ 0

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