Oil and Gas Reserve Data (Unaudited) - Summary of Proved Developed and Undeveloped Reserves (Details)	Mar. 31, 2016 Mcf MMBbls bbl	Mar. 31, 2015 Mcf bbl	Mar. 31, 2014 Mcf bbl	Mar. 31, 2013 Mcf bbl
Proved Developed Reserves | MMBbls	2,051,000
Proved Undeveloped Reserves	5,800,242	3,960,232
Oil [Member]
Proved Developed Reserves | bbl	350,180	283,670	294,620	237,420
Proved Undeveloped Reserves | bbl	734,170	376,070	206,930	128,290
Natural Gas [Member]
Proved Developed Reserves	4,406,060	4,584,790	4,081,470	4,807,020
Proved Undeveloped Reserves	1,395,220	1,703,790	2,177,810	3,037,180