Quarterly report pursuant to Section 13 or 15(d)

Summary of Property and Equipment (Detail)

v3.19.1
Summary of Property and Equipment (Detail)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
$ / bbl
Mar. 31, 2018
USD ($)
$ / bbl
Dec. 31, 2018
USD ($)
Property, Plant and Equipment [Abstract]      
Proved Oil and Gas Property, Full Cost Method $ 1,135,580   $ 1,037,993
Unproved Oil and Gas Property, Full Cost Method 64,429   63,484
Oil and Gas Property, Full Cost Method, Gross 1,200,009   1,101,477
Other property and equipment 22,502   20,383
Total properties and equipment 1,222,511   1,121,860
Accumulated depreciation, depletion and amortization (232,681)   (193,866)
Property and equipment, net (successful efforts method) 989,830   927,994
Unproved Oil and Gas Property excluded 64,400   63,500
Capitalized Exploratory Well Costs 300   $ 300
Undeveloped Leasehold Costs Transferred 100 $ 100  
Capitalized Costs, Proved Properties 1,000 700  
Interest Costs Capitalized $ 1,200 $ 2,200  
Amortization Expense Per Physical Unit of Production | $ / bbl 17.49 15.20