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Summary of Significant Accounting Policies (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Summary of Significant Accounting Policies (Textual)    
Common stock equivalents excluded from EPS as the inclusion would be anti-dilutive 9,884,762 9,262,138
Common stock, par value $ 0.01 $ 0.01
Impairment of unproved oil and gas properties   $ 30,906
Capitalized exploration costs $ 10,637 6,714
Post-impairment charge 314  
Depreciation charged to expense $ 49 $ 56
Minimum [Member]    
Summary of Significant Accounting Policies (Textual)    
Estimated useful life 3 years  
Maximum [Member]    
Summary of Significant Accounting Policies (Textual)    
Estimated useful life 14 years