SEGMENT INFORMATION (Details) - USD ($)	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Revenue before interest income	$ 5,453,000	$ 4,387,000
Interest income	1,000	0
Total revenues	5,454,000	4,387,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	483,000	276,000
Asset Impairment Charges [Abstract]
Impairment of assets	0	630,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses):	2,074,000	938,000
Equity in income (loss) of affiliates:
Equity in income of affiliates	1,207,000	1,054,000
General and administrative expenses	(1,830,000)	(1,185,000)
Interest expense	0	(1,000)
Interest income	1,000	0
Earnings before income taxes	1,452,000	806,000
Intersegment eliminations
Revenues:
Total revenues	0
Oil and natural gas
Revenues:
Revenue before interest income	3,920,000	1,887,000
Total revenues	3,920,000	1,887,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	436,000	195,000
Asset Impairment Charges [Abstract]
Impairment of assets	0	630,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses):	1,568,000	(373,000)
Contract drilling
Revenues:
Revenue before interest income	876,000	1,942,000
Total revenues	876,000	1,942,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	47,000	76,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses):	(151,000)	758,000
Land investment
Revenues:
Revenue before interest income	600,000	485,000
Total revenues	600,000	485,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses):	600,000	485,000
Other
Revenues:
Revenue before interest income	57,000	73,000
Total revenues	58,000	73,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	0	5,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses):	$ 57,000	$ 68,000