XML 55 R38.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Oil and Natural Gas Properties and Other Property and Equipment - Summary of Aggregate Capitalized Costs (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Feb. 28, 2017
Extractive Industries [Abstract]      
Proved properties $ 1,361,814 $ 1,073,959 $ 712,400
Unproved properties 313,903 388,034 531,200
Oil and natural gas properties 1,675,717 1,461,993 1,243,600
Less accumulated depletion and amortization (209,105) (123,217) 0
Total oil and natural gas properties, net $ 1,466,612 $ 1,338,776 $ 1,243,600