SEGMENT INFORMATION (Details) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Revenues:
Revenue before interest income	$ 6,678,000	$ 3,998,000	$ 12,131,000	$ 8,385,000
Interest income	1,000	0	2,000	0
Total revenues	6,679,000	3,998,000	12,133,000	8,385,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	618,000	227,000	1,101,000	503,000
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)	3,016,000	547,000	5,090,000	1,485,000
Equity in income of affiliates:
Equity in income of affiliates	1,760,000	624,000	2,967,000	1,678,000
General and administrative expenses	(2,241,000)	(1,928,000)	(4,071,000)	(3,113,000)
Interest expense	0	(3,000)	0	(4,000)
Interest income	1,000	0	2,000	0
Earnings (loss) before income taxes	2,536,000	(760,000)	3,988,000	46,000
Intersegment eliminations
Revenues:
Total revenues			0
Oil and natural gas
Revenues:
Revenue before interest income	5,133,000	2,552,000	9,053,000	4,439,000
Total revenues	5,133,000	2,552,000	9,053,000	4,439,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	577,000	146,000	1,013,000	341,000
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)	2,430,000	647,000	3,998,000	274,000
Contract drilling
Revenues:
Revenue before interest income	818,000	1,389,000	1,694,000	3,331,000
Total revenues	818,000	1,389,000	1,694,000	3,331,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	41,000	77,000	88,000	153,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses)	(141,000)	(153,000)	(292,000)	605,000
Land investment
Revenues:
Revenue before interest income	695,000	0	1,295,000	485,000
Total revenues	695,000	0	1,295,000	485,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses)	695,000	0	1,295,000	485,000
Other
Revenues:
Revenue before interest income	32,000	57,000	89,000	130,000
Total revenues	33,000	57,000	91,000	130,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	0	4,000	0	9,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses)	$ 32,000	$ 53,000	$ 89,000	$ 121,000