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Oil And Gas Properties (Narrative) (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Oil And Gas Properties [Abstract] |  |
Depletion expense | $ 569,000 | $ 637,000

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- References No definition available. + Details
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- Definition The noncash expense charged against earnings to recognize the consumption of oil and gas reserves that are part of an entities' assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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