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Description of Business (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]        
Capital expenditures $ 6,700     $ 69,900
Minimum | Forecast        
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]        
Capital expenditures   $ 5,000 $ 12,000  
Maximum | Forecast        
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items]        
Capital expenditures   $ 7,000 $ 14,000