Oil and Gas Reserve Data (Unaudited) - Schedule of Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Reserves (Details) - USD ($)	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Extractive Industries [Abstract]
Future cash inflows	$ 57,318,000	$ 72,238,000	$ 70,252,000
Future production costs and taxes	(14,571,000)	(19,569,000)	(20,647,000)
Future development costs	(9,617,000)	(6,617,000)	(4,826,000)
Future income taxes	(4,569,000)	(9,254,000)	(9,801,000)
Future net cash flows	28,561,000	36,798,000	34,978,000
Annual 10% discount for estimated timing of cash flows	(14,663,000)	(17,860,000)	(15,649,000)
Standardized measure of discounted future net cash flows	$ 13,898,000	$ 18,938,000	$ 19,329,000	$ 14,369,000