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Unaudited Supplemental Oil and Gas Information - Schedule of Prices as Adjusted for Transportation, Quality (Details)
12 Months Ended
Dec. 31, 2017
$ / bbl
$ / Mcf
Dec. 31, 2016
$ / bbl
$ / Mcf
Dec. 31, 2015
$ / bbl
$ / Mcf
Oil (bbls) [Member]      
Sales Prices | $ / bbl 51.34 42.75 43.54
Natural Gas (mcfe) [Member]      
Sales Prices 2.98    
Natural Gas (mcfe) [Member]      
Sales Prices [1] 2.98 2.48 3.36
[1] Consists of the weighted average price for natural gas in mcf plus NGL’s converted to mcf using a factor of 6 mcf for each barrel of NGL.