Annual report pursuant to Section 13 and 15(d)

SIGNIFICANT ACCOUNTING POLICIES - Depletion and Depletion per BOE Sold (Details)

v3.20.4
SIGNIFICANT ACCOUNTING POLICIES - Depletion and Depletion per BOE Sold (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
USD ($)
$ / bbl
Dec. 31, 2019
USD ($)
$ / bbl
Dec. 31, 2018
USD ($)
$ / bbl
Accounting Policies [Abstract]      
Depletion of Proved Oil and Natural Gas Properties | $ $ 160,643 $ 209,050 $ 118,974
Depletion per BOE Sold (in dollars per barrel) | $ / bbl 13.27 14.84 12.75