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Property and Equipment (Tables)
9 Months Ended
Sep. 30, 2021
Property, Plant and Equipment [Abstract]  
Summary of Property and Equipment
The following table summarizes our property and equipment as of the dates presented: 
 September 30,December 31,
 20212020
Oil and gas properties:  
Proved$1,762,268 $1,545,910 
Unproved59,560 49,935 
Total oil and gas properties1,821,828 1,595,845 
Other property and equipment28,265 27,746 
Total properties and equipment1,850,093 1,623,591 
Accumulated depreciation, depletion, amortization and impairments(985,215)(900,042)
  Total property and equipment, net$864,878 $723,549