Annual report pursuant to Section 13 and 15(d)

Supplemental Information on Oil and Natural Gas Properties (Unaudited) (Capitalized Costs) (Details)

v3.19.3.a.u2
Supplemental Information on Oil and Natural Gas Properties (Unaudited) (Capitalized Costs) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Oil and Gas Exploration and Production Industries Disclosures [Abstract]    
Evaluated properties $ 7,203,482 $ 4,585,020
Unevaluated properties 1,986,124 1,404,513
Total oil and natural gas properties 9,189,606 5,989,533
Less accumulated depreciation, depletion, amortization and impairment (2,520,488) (2,270,675)
Total oil and natural gas properties, net $ 6,669,118 $ 3,718,858