Supplementary Information On Natural Gas, Oil And NGL Reserves (Summary of Standardized Measure of Discounted Future Net Cash Flows) (Details) - USD ($)	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Extractive Industries [Abstract]
Future cash inflows	$ 134,179,216	$ 366,697,321	$ 759,899,074
Future production costs	(66,136,222)	(153,935,373)	(259,413,766)
Future development and asset retirement costs	(1,957,225)	(1,917,937)	(89,518,449)
Future income tax expense	(13,224,535)	(47,788,416)	(95,872,182)
Future net cash flows	52,861,234	163,055,595	315,094,677
10% annual discount	(21,727,081)	(77,494,066)	(158,768,823)
Standardized measure of discounted future net cash flows	$ 31,134,153	$ 85,561,529	$ 156,325,854	$ 80,832,575