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Equity Method Investments (Details) $ in Thousands | 1 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 31, 2019 USD ($) | Jun. 30, 2021 USD ($) joint_venture | Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |
Investment in joint ventures |  | $ 252,048 |  | $ 253,675
Payments to Acquire Equity Method Investments |  | $ 1,393 | $ 10,515 |
Equity method investments, number of joint ventures | joint_venture |  | 3 |  |
Red River |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Investment in joint ventures | $ 124,700 |  |  |
Ownership interest (as percent) | 33.00% |  |  |
CP LLC And Rangeland Energy |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investments, number of joint ventures | joint_venture |  | 2 |  |
CP LLC |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Ownership interest (as percent) |  | 50.00% |  |
Rangeland Rio |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Ownership interest (as percent) |  | 33.00% |  |
Red River Start Up Capital |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Payments to Acquire Equity Method Investments | $ 400 |  |  |
Red River Expansion |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Payments to Acquire Equity Method Investments | $ 3,500 | $ 1,400 |  | $ 12,200

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