Annual report pursuant to Section 13 and 15(d)

CRUDE OIL AND NATURAL GAS PROPERTIES - Capitalized Costs (Details)

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CRUDE OIL AND NATURAL GAS PROPERTIES - Capitalized Costs (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Oil and Gas Exploration and Production Industries Disclosures [Abstract]        
Property Acquisition $ 308 $ 4,302 $ 4,487 $ 934
Development 0 0 0 0
Total $ 308 $ 4,302 $ 4,487 $ 934