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Acquisitions and Disposal of Assets (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Feb. 05, 2021 | Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021 | Dec. 31, 2021
Assets and Liabilities Held for Sale [Line Items] |  |  |  |  |
Proceeds from sale of assets |  | $ 59 | $ 37,238 |  |
Disposal Group, Held-for-sale, Not Discontinued Operations | North Park Basin, Colorado |  |  |  |  |
Assets and Liabilities Held for Sale [Line Items] |  |  |  |  |
Purchase price | $ 47,000 |  |  |  |
Proceeds from sale of assets | 39,700 |  |  |  |
Reduction of full cost pool assets | 22,000 |  |  |  |
Reduction in non-full cost pool assets | 4,600 |  |  |  |
Gain on sale | 19,700 |  |  |  | $ 18,900
Gain from release of revenues in suspense | 500 |  |  |  |
Gain from relief of asset retirement obligations | 6,100 |  |  |  |
Reduction in oil and gas properties related to NPB | $ 26,600 |  |  |  |
Decrease in sales price |  |  |  | $ 800 |

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