Supplementary Information On Oil, Ngl And Natural Gas Reserves (Summary of Standardized Measure of Discounted Future Net Cash Flows) (Details) (USD $)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Supplementary Information On Oil, Ngl And Natural Gas Reserves [Abstract]
Future cash inflows	$ 1,405,400,261	$ 630,332,900	$ 408,694,869
Future production costs	(423,512,430)	(216,584,982)	(135,516,703)
Future development and asset retirement costs	(146,465,509)	(50,572,218)	(35,290,260)
Future income tax expense	(308,149,182)	(131,397,192)	(83,543,516)
Future net cash flows	527,273,140	231,778,508	154,344,390
10% annual discount	(322,490,636)	(130,103,612)	(86,930,102)
Standardized measure of discounted future net cash flows	$ 204,782,504	$ 101,674,896	$ 67,414,288