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Related Party Transactions (Details) - USD ($)
$ in Millions
3 Months Ended
Feb. 12, 2020
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Related Party Transaction [Line Items]        
Proceeds from sale of interest in oil and gas leases $ 0.4      
Flatonia Energy, LLC        
Related Party Transaction [Line Items]        
Payments made to related party   $ 3.3 $ 4.3  
Payments received from related party   1.0 $ 1.3  
Amounts receivable from related party   0.7   $ 0.6
Amounts payable to related party   $ 0.8   $ 1.1
Flatonia Energy, LLC | Class A Common Stock        
Related Party Transaction [Line Items]        
Percentage of common stock acquired   5.90%    
Flatonia Energy, LLC | Common Class A and Common Class B        
Related Party Transaction [Line Items]        
Percentage of common stock acquired   2.70%