CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Sep. 30, 2021
Current assets:
Cash and cash equivalents	$ 12,574	$ 11,279
Accounts and other receivables, net of allowance for doubtful accounts of: $114,000 at June 30, 2022; $391,000 at September 30, 2021	4,860	3,069
Income taxes receivable	575	530
Asset held for sale	0	687
Other current assets	2,527	2,470
Total current assets	20,536	18,035
Asset for retirement benefits	2,478	2,229
Operating lease right-of-use assets	249	296
Property, Plant and Equipment, Gross [Abstract]
Proved properties	70,010	58,490
Unproved properties	0	962
Drilling rigs and other property and equipment	7,674	7,960
Total property and equipment	77,684	67,412
Accumulated depletion, impairment, depreciation, and amortization	(64,605)	(63,537)
Total property and equipment, net	13,079	3,875
Total assets	36,342	24,435
Current liabilities:
Accounts payable	1,269	1,416
Accrued capital expenditures	1,692	909
Accrued compensation	723	1,073
Accrued operating and other expenses	1,554	1,171
Current portion of asset retirement obligation	1,589	713
Other current liabilities	1,370	619
Total current liabilities	8,197	5,901
Long-term debt	47	47
Operating lease liabilities	147	180
Liability for retirement benefits	2,145	2,101
Asset retirement obligation	7,516	6,340
Deferred income tax liabilities	306	359
Total liabilities	18,358	14,928
Commitments and contingencies
Equity:
Common stock, par value $0.50 per share; authorized, 40,000,000 shares: 10,124,587 issued at June 30, 2022; 9,613,525 issued at September 30, 2021	5,062	4,807
Additional paid-in capital	7,235	4,590
Retained earnings	8,012	2,356
Accumulated other comprehensive (loss) income, net	(89)	32
Treasury stock, at cost: 167,900 shares at June 30, 2022 and September 30, 2021	(2,286)	(2,286)
Total stockholders’ equity	17,934	9,499
Non-controlling interests	50	8
Total equity	17,984	9,507
Total liabilities and equity	$ 36,342	$ 24,435