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Oil And Gas Properties (Details) - USD ($)
6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Oil And Gas Properties [Abstract]      
Oil and gas properties, at cost $ 49,566,000   $ 49,388,000
Unevaluated properties 552,000   462,000
Accumulated depletion (25,799,000)   (24,437,000)
Oil and gas properties, net 24,319,000   $ 25,413,000
Depletion expense $ 1,360,000 $ 1,325,000