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Oil and Natural Gas Properties Oil and Natural Gas Properties (Tables)
6 Months Ended
Jun. 30, 2021
Oil and Gas Exploration and Production Industries Disclosures [Abstract]  
Schedule of Impairments To Oil And Natural Gas Properties During the six months ended June 30, 2020, as a result of the decline in crude oil price futures at the time, the Company recorded the following non-cash impairment charges:
(In thousands)Eagle Ford TrendMidland BasinCorporateTotal
Proved properties$25,252 $— $— $25,252 
Unproved properties11,311 — — 11,311 
Acreage expirations (1)431 5,819 — 6,250 
Goodwill— — 17,620 17,620 
$36,994 $5,819 $17,620 $60,433 
(1)Impairments in unproved properties resulting from acreage deemed expired (not planned to be renewed)