CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Sep. 30, 2022
Current assets:
Cash and cash equivalents	$ 2,572	$ 12,804
Accounts and other receivables, net of allowance for doubtful accounts of: $250,000 at June 30, 2023; $231,000 at September 30, 2022	3,286	4,361
Income taxes receivable	51	0
Other current assets	3,238	2,932
Total current assets	9,147	20,097
Asset for retirement benefits	3,581	3,385
Operating lease right-of-use assets	75	132
Property and equipment:
Proved properties	81,102	67,883
Drilling rigs and other property and equipment	7,236	6,923
Total property and equipment	88,338	74,806
Accumulated depletion, impairment, depreciation, and amortization	(66,006)	(61,205)
Total property and equipment, net	22,332	13,601
Total assets	35,135	37,215
Current liabilities:
Accounts payable	1,408	1,462
Accrued capital expenditures	1,699	1,655
Accrued compensation	616	999
Accrued operating and other expenses	1,672	1,576
Current portion of asset retirement obligation	1,607	1,327
Other current liabilities	564	1,908
Total current liabilities	7,566	8,927
Long-term debt	0	44
Operating lease liabilities	58	117
Liability for retirement benefits	1,713	1,649
Asset retirement obligation	7,641	7,129
Deferred income tax liabilities	89	188
Total liabilities	17,067	18,054
Commitments and contingencies
Equity:
Common stock, par value $0.50 per share; authorized, 40,000,000 shares: 10,158,678 issued at June 30, 2023; 10,124,587 issued at September 30, 2022	5,079	5,062
Additional paid-in capital	7,602	7,351
Retained earnings	6,406	7,720
Accumulated other comprehensive income, net	1,251	1,294
Treasury stock, at cost: 167,900 shares at June 30, 2023 and September 30, 2022	(2,286)	(2,286)
Total stockholders’ equity	18,052	19,141
Non-controlling interests	16	20
Total equity	18,068	19,161
Total liabilities and equity	$ 35,135	$ 37,215