Derivatives (Schedule of Gain or Loss on Derivative Contracts, Net) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative [Line Items]
Cash received (paid) on derivative contracts, net	$ 1,699,122	$ 418,892	$ 3,230,034	$ (1,099,402)
Non-cash gain (loss) on derivative contracts, net	(2,537,404)	1,894,303	(814,633)	6,125,525
Gains (losses) on derivative contracts, net	(838,282)	2,313,195	2,415,401	5,026,123
Natural Gas Costless Collars [Member]
Derivative [Line Items]
Cash received (paid) on derivative contracts, net	18,000		18,000	(191,200)
Non-cash gain (loss) on derivative contracts, net	(60,035)		(32,152)	10,453
Natural Gas Fixed Price Swaps [Member]
Derivative [Line Items]
Cash received (paid) on derivative contracts, net	268,650	525,200	1,488,970	(294,940)
Non-cash gain (loss) on derivative contracts, net	(129,865)	1,255,469	(815,630)	2,177,594
Oil Costless Collars [Member]
Derivative [Line Items]
Cash received (paid) on derivative contracts, net	625,968	(104,394)	827,664	(359,564)
Non-cash gain (loss) on derivative contracts, net	(757,060)	128,829	(283,255)	1,516,144
Oil Fixed Price Swaps [Member]
Derivative [Line Items]
Cash received (paid) on derivative contracts, net	786,504	(1,914)	895,400	(253,698)
Non-cash gain (loss) on derivative contracts, net	$ (1,590,444)	$ 510,005	$ 316,404	$ 2,421,334