Condensed Statements Of Operations - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Revenues	$ 9,557,937	$ 12,437,186	$ 33,469,721	$ 33,438,117
Lease bonuses and rentals	484,298	819,591	1,080,455	3,991,752
Gains (losses) on derivative contracts	(2,129,041)	1,619,697	(3,966,869)	1,658,347
Costs and expenses:
Lease operating expenses	3,233,172	3,391,079	10,077,449	9,545,990
Production taxes	485,157	390,387	1,471,970	1,129,785
Depreciation, depletion and amortization	4,619,509	4,714,350	14,136,411	13,654,268
Provision for impairment	0	0	0	10,788
Loss (gain) on asset sales and other	190,045	11,447	110,859	98,445
Interest expense	420,896	306,161	1,288,426	884,928
General and administrative	1,593,251	1,796,004	5,247,584	5,358,114
Total costs and expenses	10,542,030	10,609,428	32,332,699	30,682,318
Income (loss) before provision (benefit) for income taxes	(984,093)	1,827,758	1,137,022	2,755,799
Provision (benefit) for income taxes	(209,000)	567,000	(12,943,000)	263,000
Net income (loss)	$ (775,093)	$ 1,260,758	$ 14,080,022	$ 2,492,799
Basic and diluted earnings (loss) per common share	$ (0.05)	$ 0.07	$ 0.83	$ 0.15
Basic and diluted weighted average shares outstanding:
Common shares	16,775,981	16,668,814	16,742,044	16,639,090
Unissued, directors' deferred compensation shares	206,202	254,891	205,867	277,294
Basic and diluted weighted average shares outstanding	16,982,183	16,923,705	16,947,911	16,916,384
Dividends declared per share of common stock and paid in period	$ 0.04	$ 0.04	$ 0.12	$ 0.12
Oil, NGL and Natural Gas [Member]
Revenues:
Revenues	$ 11,202,680	$ 9,997,898	$ 36,356,135	$ 27,788,018