Natural Gas Properties & Other Property and Equipment Asset Retirement Obligation (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
[2] | ||||||
| Asset Retirement Obligation, Roll Forward Analysis [Roll Forward] | |||||||||||
| Balance, beginning of period | $ 201,774 | $ 204,186 | $ 233,339 | $ 201,158 | |||||||
| Liabilities incurred | 69 | 45 | 109 | 80 | |||||||
| Liabilities settled | (374) | (180) | (822) | (803) | |||||||
| Revisions of estimates | 0 | 0 | (35,172) | 0 | [1] | ||||||
| Accretion of discount | 3,642 | 3,671 | 7,657 | 7,287 | |||||||
| Balance, end of period | 205,111 | 207,722 | 205,111 | 207,722 | |||||||
| Less current portion | (4,507) | (3,391) | (4,507) | (3,391) | |||||||
| Asset retirement obligations, long-term | $ 200,604 | $ 204,331 | $ 200,604 | $ 204,331 | $ 230,372 | ||||||
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