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Acquisitions and Divestitures - Additional Information (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 22, 2019
USD ($)
a
Boe
well
location
Nov. 15, 2018
USD ($)
Aug. 02, 2017
USD ($)
Mar. 31, 2019
USD ($)
Mar. 31, 2018
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Feb. 28, 2019
USD ($)
Business Acquisition [Line Items]                
Gain (loss) on disposition of oil and gas property           $ (33,508) $ 0  
Sooner Acquisition                
Business Acquisition [Line Items]                
Purchase consideration of oil and gas properties   $ 38,700            
Transaction costs capitalized   $ 300            
Fort Worth, Texas                
Business Acquisition [Line Items]                
Acquisition price of an office building     $ 10,000          
Business combination, recognized identifiable assets acquired and liabilities assumed, land               $ 2,000
Other expense | Fort Worth, Texas                
Business Acquisition [Line Items]                
Impairment related to leased acreage         $ 1,600      
Pirate                
Business Acquisition [Line Items]                
Proceeds from divestiture of businesses $ 11,500              
Gas and oil area, undeveloped, net | a 3,400              
Productive oil wells, number of wells, net | well 6              
Production, barrels of oil equivalents | Boe 200              
Proved undeveloped locations | location 7              
Gain (loss) on disposition of oil and gas property       $ (33,500)