Derivatives (Schedule of Gain or Loss on Derivative Contracts, Net) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivative [Line Items]
Cash received (paid) on derivative contracts, net	$ (1,004,690)	$ 1,699,122	$ (688,807)	$ 3,230,034
Non-cash gain (loss) on derivative contracts, net	(4,482,793)	(2,537,404)	(7,400,855)	(814,633)
Gains (losses) on derivative contracts, net	(5,487,483)	(838,282)	(8,089,662)	2,415,401
Natural Gas Costless Collars [Member]
Derivative [Line Items]
Cash received (paid) on derivative contracts, net	(11,975)	18,000	(21,064)	18,000
Non-cash gain (loss) on derivative contracts, net	(1,732,932)	(60,035)	(1,135,852)	(32,152)
Natural Gas Fixed Price Swaps [Member]
Derivative [Line Items]
Cash received (paid) on derivative contracts, net	(20,185)	268,650	(18,943)	1,488,970
Non-cash gain (loss) on derivative contracts, net	(953,201)	(129,865)	(670,605)	(815,630)
Oil Costless Collars [Member]
Derivative [Line Items]
Cash received (paid) on derivative contracts, net	(346,786)	625,968	(370,432)	827,664
Non-cash gain (loss) on derivative contracts, net	(680,443)	(757,060)	(1,787,689)	(283,255)
Oil Fixed Price Swaps [Member]
Derivative [Line Items]
Cash received (paid) on derivative contracts, net	(625,744)	786,504	(278,368)	895,400
Non-cash gain (loss) on derivative contracts, net	$ (1,116,217)	$ (1,590,444)	$ (3,806,709)	$ 316,404