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Commitments and Contingencies (Tables)
 3 Months Ended
Mar. 31, 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$104,758  
202180,237  
202211,740  
20239,524  
202410,268  
Thereafter7,664  
$224,191