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Commitments and Contingencies - Proppant, Chemical and Rail Car Commitments (Details)
$ in Thousands
Mar. 31, 2021
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
Remainder of 2021 $ 46,357
2022 19,765
2023 10,004
2024 10,748
2025 5,744
Thereafter 0
Other commitment $ 92,618