Quarterly report pursuant to Section 13 or 15(d)

Summary of Property and Equipment (Detail)

v3.20.2
Summary of Property and Equipment (Detail)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
USD ($)
$ / bbl
Jun. 30, 2020
USD ($)
Sep. 30, 2019
USD ($)
$ / bbl
Sep. 30, 2020
USD ($)
$ / bbl
Sep. 30, 2019
USD ($)
$ / bbl
Dec. 31, 2019
USD ($)
Property, Plant and Equipment [Abstract]            
Asset Impairment Charges $ 235,989 $ 35,500 $ 0 $ 271,498 $ 0  
Proved Oil and Gas Property, Full Cost Method 1,509,097     1,509,097   $ 1,409,219
Unproved Oil and Gas Property, Full Cost Method 52,910     52,910   53,200
Oil and Gas Property, Full Cost Method, Gross 1,562,007     1,562,007   1,462,419
Total properties and equipment 1,589,502     1,589,502   1,488,334
Other property and equipment 27,495     27,495   25,915
Accumulated depreciation, depletion and amortization (754,002)     (754,002)   (367,909)
Property and equipment, net (successful efforts method) 835,500     835,500   1,120,425
Interest Costs Capitalized       2,100 3,200  
Unproved Oil and Gas Property excluded 52,900     52,900   $ 53,200
Undeveloped Leasehold Costs Transferred       4,500 200  
Capitalized Costs, Proved Properties $ 1,300   $ 3,200 $ 1,300 $ 3,200  
Amortization Expense Per Physical Unit of Production | $ / bbl 16.63   17.47 16.63 17.47