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Commitments and Contingencies (Tables)
 9 Months Ended
Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract]  
Other Commitments
Future proppant, including rail car transport, and chemical commitments based on Company forecasts are as follows:
($ in thousands)
Remainder of 2020$29,993 
202167,533 
202218,147 
20239,524 
202410,268 
Thereafter7,664 
$143,129