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Acquisitions and Divestitures of Oil and Gas Properties - Acquisitions (Details)
$ in Thousands
 12 Months Ended
Nov. 02, 2018
USD ($)
a
well
Feb. 10, 2017
USD ($)
a
well
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Acquisitions And Dispositions [Abstract]          
Cash paid for acres | $ $ 22,500 $ 47,800      
Liability incurred upon acquiring and drilling wells | $ $ 6,400   $ 2,771 $ 7,079 $ 1,336
Number of wells acquired | well 1,199 4      
Percent of wells operated by company 80.00%        
Percent of working interest in acquired acres 11.10%        
Number of gross acres acquired 397,000        
Number of net acres acquired 44,000        
Percent of working interest in saltwater gathering and disposal system 13.20%        
Number of acres acquired   13,000