Supplementary Information On Oil, NGL And Natural Gas Reserves (Summary of Changes in Standardized Measure of Discounted Future Net Cash Flows) (Details) - USD ($)	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Extractive Industries [Abstract]
Beginning Balance	$ 156,325,854	$ 80,832,575	$ 29,770,119
Sales of oil, NGL and natural gas, net of production costs	(25,072,122)	(32,836,007)	(25,783,055)
Net change in sales prices and production costs	(76,588,460)	47,533,281	37,186,619
Net change in future development and asset retirement costs	43,607,535	1,580,942	(7,939,156)
Extensions and discoveries	7,074,245	34,667,557	38,582,908
Revisions of quantity estimates	(60,308,497)	(8,391,223)	15,282,587
Acquisitions (divestitures) of reserves-in-place	(3,134,783)	(307,472)	(962,667)
Accretion of discount	20,457,930	12,602,209	4,789,294
Net change in income taxes	23,413,194	(3,057,128)	(27,070,430)
Change in timing and other, net	(213,367)	23,701,120	16,976,356
Net change	(70,764,325)	75,493,279	51,062,456
Ending Balance	$ 85,561,529	$ 156,325,854	$ 80,832,575