CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Sep. 30, 2021
Current assets:
Cash and cash equivalents	$ 9,626	$ 11,279
Accounts and other receivables, net of allowance for doubtful accounts of: $192,000 at March 31, 2022; $391,000 at September 30, 2021	4,764	3,069
Income taxes receivable	638	530
Asset held for sale	0	687
Other current assets	3,228	2,470
Total current assets	18,256	18,035
Asset for retirement benefits	2,395	2,229
Operating lease right-of-use assets	276	296
Property, Plant and Equipment, Gross [Abstract]
Proved properties	70,377	58,490
Unproved properties	0	962
Drilling rigs and other property and equipment	7,680	7,960
Total property and equipment	78,057	67,412
Accumulated depletion, impairment, depreciation, and amortization	(65,552)	(63,537)
Total property and equipment, net	12,505	3,875
Total assets	33,432	24,435
Current liabilities:
Accounts payable	1,659	1,416
Accrued capital expenditures	1,360	909
Accrued compensation	555	1,073
Accrued operating and other expenses	1,266	1,171
Current portion of asset retirement obligation	1,532	713
Other current liabilities	858	619
Total current liabilities	7,230	5,901
Long-term debt	48	47
Operating lease liabilities	174	180
Liability for retirement benefits	2,131	2,101
Asset retirement obligation	8,031	6,340
Deferred income tax liabilities	357	359
Total liabilities	17,971	14,928
Commitments and contingencies
Equity:
Common stock, par value $0.50 per share; authorized, 20,000,000 shares: 10,124,587 issued at March 31, 2022; 9,613,525 issued at September 30, 2021	5,062	4,807
Additional paid-in capital	7,121	4,590
Retained earnings	5,481	2,356
Accumulated other comprehensive loss, net	19	32
Treasury stock, at cost: 167,900 shares at March 31, 2022 and September 30, 2021	(2,286)	(2,286)
Total stockholders’ equity	15,397	9,499
Non-controlling interests	64	8
Total equity	15,461	9,507
Total liabilities and equity	$ 33,432	$ 24,435