Condensed Balance Sheets - USD ($)		Dec. 31, 2019	Sep. 30, 2019
Current assets:
Cash and cash equivalents		$ 268,707	$ 6,160,691
Oil, NGL and natural gas sales receivables (net of allowance for uncollectable accounts)		4,321,486	4,377,646
Refundable income taxes		1,917,515	1,505,442
Derivative contracts, net	[1]	774,106	2,256,639
Other		776,672	177,037
Total current assets		8,058,486	14,477,455
Properties and equipment at cost, based on successful efforts accounting:
Producing oil and natural gas properties		358,110,146	354,718,398
Non-producing oil and natural gas properties		19,131,441	14,599,023
Other		1,731,037	1,722,080
Gross properties and equipment, at cost, based on successful efforts accounting		378,972,624	371,039,501
Less accumulated depreciation, depletion and amortization		(260,155,491)	(259,314,590)
Net properties and equipment		118,817,133	111,724,911
Investments		202,172	205,076
Derivative contracts, net	[1]	371	237,505
Total assets		127,078,162	126,644,947
Current liabilities:
Accounts payable		670,175	665,160
Accrued liabilities and other		1,824,408	2,433,466
Total current liabilities		2,494,583	3,098,626
Long-term debt		35,000,000	35,425,000
Deferred income taxes, net		6,634,007	5,976,007
Asset retirement obligations		2,840,639	2,835,781
Stockholders' equity:
Class A voting common stock, $0.01666 par value; 24,000,000 shares authorized; 16,897,306 issued at December 31, 2019, and at September 30, 2019		281,509	281,509
Capital in excess of par value		3,033,678	2,967,984
Deferred directors' compensation		2,641,993	2,555,781
Retained earnings		82,420,516	81,848,301
Stockholders' Equity		88,377,696	87,653,575
Less treasury stock, at cost; 553,137 shares at December 31, 2019, and 558,051 shares at September 30, 2019		(8,268,763)	(8,344,042)
Total stockholders' equity		80,108,933	79,309,533
Total liabilities and stockholders' equity		$ 127,078,162	$ 126,644,947

[1] See Fair Value Measurements section for further disclosures regarding fair value of financial instruments.