Condensed Statements Of Cash Flows - USD ($)	3 Months Ended			6 Months Ended			12 Months Ended
	Mar. 31, 2020		Mar. 31, 2019	Mar. 31, 2020		Mar. 31, 2019	Sep. 30, 2019
Operating Activities
Net income (loss)				$ (18,562,700)		$ 10,804,606
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	$ 3,373,518		$ 3,623,976	6,329,219		7,437,662
Impairment of producing properties	29,545,702	[1]	0	29,545,702	[1]	0
Provision for deferred income taxes				(4,711,000)		3,942,000
Gain from leasing fee mineral acreage				(544,979)		(722,912)
Proceeds from leasing fee mineral acreage				559,462		737,812
Net (gain) loss on sales of assets				(3,265,449)		(9,096,938)
Directors' deferred compensation expense				140,130		132,280
Fair value of derivative contracts				(1,722,771)		(4,231,222)
Restricted stock awards	343,101		286,852	491,616		446,321
Other				7,225		9,326
Cash provided (used) by changes in assets and liabilities:
Oil, NGL and natural gas sales receivables				1,168,943		715,935
Other current assets				(232,349)		(172,645)
Accounts payable				117,561		(77,977)
Income taxes receivable				(2,072,428)		(538,150)
Other non-current assets				50,010		17,317
Accrued liabilities				(1,189,850)		(342,361)
Total adjustments				24,671,042		(1,743,552)
Net cash provided by operating activities				6,108,342		9,061,054
Investing Activities
Capital expenditures				(139,755)		(4,159,683)
Acquisition of minerals and overrides				(10,254,016)		(1,809,775)
Investments in partnerships						(199)
Proceeds from sales of assets				3,376,049		9,096,938
Net cash provided (used) by investing activities				(7,017,722)		3,127,281
Financing Activities
Borrowings under Credit Facility				5,561,725		8,686,270
Payments of loan principal				(8,986,725)		(15,586,270)
Purchases of treasury stock				(7,635)		(3,967,685)
Payments of dividends				(1,319,899)		(1,348,170)
Net cash provided (used) by financing activities				(4,752,534)		(12,215,855)
Increase (decrease) in cash and cash equivalents				(5,661,914)		(27,520)
Cash and cash equivalents at beginning of period				6,160,691		532,502	$ 532,502
Cash and cash equivalents at end of period	$ 498,777		$ 504,982	498,777		504,982	$ 6,160,691
Supplemental Schedule of Noncash Investing and Financing Activities:
Additions to asset retirement obligations				4		27,562
Gross additions to properties and equipment				10,229,121		5,654,060
Net (increase) decrease in accounts payable for properties and equipment additions				164,650		315,398
Capital expenditures and acquisitions				$ 10,393,771		$ 5,969,458

[1] At the end of each quarter, the Company assessed the carrying value of its producing properties for impairment. This assessment utilized estimates of future cash flows. Significant judgments and assumptions in these assessments include estimates of future oil, NGL and natural gas prices using a forward NYMEX curve adjusted for projected inflation, locational basis differentials, drilling plans, expected capital costs and an applicable discount rate commensurate with risk of the underlying cash flow estimates. These assessments identified certain properties with carrying value in excess of their calculated fair values.