Supplementary Information On Natural Gas, Oil And NGL Reserves (Summary of Changes in Standardized Measure of Discounted Future Net Cash Flows) (Details) - USD ($)	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Extractive Industries [Abstract]
Beginning Balance	$ 85,561,529	$ 156,325,854	$ 80,832,575
Sales of natural gas, oil and NGL, net of production costs	(12,692,681)	(25,072,122)	(32,836,007)
Net change in sales prices and production costs	(46,499,344)	(76,588,460)	47,533,281
Net change in future development and asset retirement costs	(20,571)	43,607,535	1,580,942
Extensions and discoveries	2,841,807	7,074,245	34,667,557
Revisions of quantity estimates	(28,332,653)	(60,308,497)	(8,391,223)
Acquisitions (divestitures) of reserves-in-place	1,169,819	(3,134,783)	(307,472)
Accretion of discount	11,039,792	20,457,930	12,602,209
Net change in income taxes	17,037,980	23,413,194	(3,057,128)
Change in timing and other, net	1,028,475	(213,367)	23,701,120
Net change	(54,427,376)	(70,764,325)	75,493,279
Ending Balance	$ 31,134,153	$ 85,561,529	$ 156,325,854