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Fair Value of Financial Instruments - The Waha JVs - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items] |  |  |  |  |
Equity method investments, equity in earnings (losses) | $ 6,587 | $ 7,525 | $ 13,364 | $ 14,871 |
Equity method investments, net investment | 288,000 |  | 288,000 |  | $ 267,000
Unrealized gains (losses) on equity investee activity, net of tax | 7,843 | (3,465) | 21,597 | 10,374 |
Waha JVs |  |  |  |  |
Fair Value, Financial Instruments Measured on a Non-Recurring Basis [Line Items] |  |  |  |  |
Equity method investments, equity in earnings (losses) | 7,600 | 8,600 | 15,000 | 16,300 |
Equity method investments, distributions of earnings received, operating cash flows | 4,600 | 0 | 7,600 | 0 |
Equity method investments, cumulative undistributed earnings | 102,300 |  | 102,300 |  |
Equity method investments, net investment | 245,000 |  | 245,000 |  | $ 216,000
Unrealized gains (losses) on equity investee activity, before tax | 10,400 | (4,900) | 28,700 | 12,300 |
Unrealized gains (losses) on equity investee activity, net of tax | $ 7,800 | $ (3,700) | $ 21,600 | $ 9,400 |

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