CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021
Current assets:
Cash and cash equivalents	$ 12,142	$ 11,279
Accounts and other receivables, net of allowance for doubtful accounts of: $355,000 at December 31, 2021; $391,000 at September 30, 2021	3,186	3,069
Income taxes receivable	519	530
Asset held for sale	0	687
Other current assets	2,696	2,470
Total current assets	18,543	18,035
Asset for retirement benefits	2,312	2,229
Operating lease right-of-use assets	252	296
Property, Plant and Equipment, Gross
Proved properties	63,040	58,490
Unproved properties	0	962
Drilling rigs and other property and equipment	7,711	7,960
Total property and equipment	70,751	67,412
Accumulated depletion, depreciation, and amortization	(64,183)	(63,537)
Total property and equipment, net	6,568	3,875
Total assets	27,675	24,435
Current liabilities:
Accounts payable	1,207	1,416
Accrued capital expenditures	2,754	909
Accrued compensation	821	1,073
Accrued operating and other expenses	1,141	1,171
Current portion of asset retirement obligation	1,216	713
Other current liabilities	728	619
Total current liabilities	7,867	5,901
Long-term debt	47	47
Operating lease liabilities	159	180
Liability for retirement benefits	2,117	2,101
Asset retirement obligation	6,267	6,340
Deferred income tax liabilities	391	359
Total liabilities	16,848	14,928
Commitments and contingencies
Equity:
Common stock, par value $0.50 per share; authorized, 20,000,000 shares: 9,614,683 issued at December 31, 2021 and 9,613,525 issued at September 30, 2021	4,807	4,807
Additional paid-in capital	4,846	4,590
Retained earnings	3,429	2,356
Accumulated other comprehensive income, net	7	32
Treasury stock, at cost: 167,900 shares at December 31, 2021 and September 30, 2021	(2,286)	(2,286)
Total stockholders' equity	10,803	9,499
Non-controlling interests	24	8
Total equity	10,827	9,507
Total liabilities and equity	$ 27,675	$ 24,435