CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Current assets:
Cash and cash equivalents	$ 11,279	$ 4,584
Accounts and other receivables, net of allowance for doubtful accounts of: $391,000 at September 30, 2021; $341,000 at September 30, 2020	3,069	2,176
Income taxes receivable	530	472
Assets held for sale	687	699
Other current assets	2,470	1,556
Total current assets	18,035	9,487
Asset for retirement benefits	2,229	771
Investments	0	901
Operating lease right-of-use assets	296	249
Oil and natural gas properties, full cost method of accounting:
Proved properties, net	2,423	2,303
Unproved properties	962	0
Total oil and natural gas properties, net	3,385	2,303
Drilling rigs and other property and equipment, net	490	1,471
Total assets	24,435	15,182
Current liabilities:
Accounts payable	1,416	2,104
Accrued capital expenditures	909	542
Accrued compensation	1,073	408
Accrued operating and other expenses	1,171	1,325
Current portion of asset retirement obligation	713	647
Other current liabilities	619	1,338
Total current liabilities	5,901	6,364
Long-term debt	47	58
Operating lease liabilities	180	143
Liability for retirement benefits	2,101	4,829
Asset retirement obligation	6,340	5,547
Deferred income tax liabilities	359	194
Total liabilities	14,928	17,135
Commitments and contingencies (Note 18)
Equity:
Common stock, par value $0.50 per share; authorized, 20,000,000 shares: 9,613,525 issued at September 30, 2021; 8,445,060 issued at September 30, 2020	4,807	4,223
Additional paid-in capital	4,590	1,350
Retained earnings (accumulated deficit)	2,356	(3,897)
Accumulated other comprehensive income (loss), net	32	(1,435)
Treasury stock, at cost: 167,900 shares at September 30, 2021 and 2020	(2,286)	(2,286)
Total stockholders’ equity (deficit)	9,499	(2,045)
Non-controlling interests	8	92
Total equity (deficit)	9,507	(1,953)
Total liabilities and equity	$ 24,435	$ 15,182