SEGMENT INFORMATION (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues:
Revenue before interest income	$ 8,028,000	$ 5,108,000	$ 20,159,000	$ 13,493,000
Interest income	0	6,000	2,000	6,000
Total revenues	8,028,000	5,114,000	20,161,000	13,499,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	814,000	235,000	1,915,000	738,000
Asset Impairment Charges
Impairment of assets	0	0	0	630,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses)	3,945,000	2,130,000	9,035,000	3,615,000
Equity in income of affiliates:
Equity in income of affiliates	433,000	3,348,000	3,400,000	5,026,000
General and administrative expenses	(1,713,000)	(2,227,000)	(5,784,000)	(5,340,000)
Interest expense	(1,000)	(2,000)	(1,000)	(6,000)
Interest income	0	6,000	2,000	6,000
Gain on debt extinguishment	0	149,000	0	149,000
Gain on termination of post-retirement medical plan	0	2,341,000	0	2,341,000
Earnings before income taxes	2,664,000	5,745,000	6,652,000	5,791,000
Intersegment eliminations
Revenues:
Total revenues			0
Oil and natural gas
Revenues:
Revenue before interest income	7,292,000	2,887,000	16,345,000	7,326,000
Total revenues	7,292,000	2,887,000	16,345,000	7,326,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	772,000	155,000	1,785,000	496,000
Asset Impairment Charges
Impairment of assets	0	0	0	630,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses)	4,123,000	1,015,000	8,121,000	1,289,000
Contract drilling
Revenues:
Revenue before interest income	736,000	889,000	2,430,000	4,220,000
Total revenues	736,000	889,000	2,430,000	4,220,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	41,000	76,000	129,000	229,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses)	(177,000)	(213,000)	(469,000)	392,000
Land investment
Revenues:
Revenue before interest income	0	1,253,000	1,295,000	1,738,000
Total revenues	0	1,253,000	1,295,000	1,738,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses)	0	1,253,000	1,295,000	1,738,000
Other
Revenues:
Revenue before interest income	0	79,000	89,000	209,000
Total revenues	0	85,000	91,000	215,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	1,000	4,000	1,000	13,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses)	$ (1,000)	$ 75,000	$ 88,000	$ 196,000