SUPPLEMENTARY OIL AND NATURAL GAS INFORMATION (UNAUDITED) - RESULTS OF OPERATIONS FOR OIL AND NATURAL GAS PRODUCING ACTIVITIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Results of Operations for Oil and Natural Gas Producing Activities
Net revenues	$ 13,563	$ 17,396
Production costs	(8,966)	(9,849)
Depletion	(3,144)	(4,947)
Impairment of assets	(865)	(2,885)
Pre-tax results of operations	588	(285)
Estimated income tax expense	224	340
Results of operations	364	(625)
Canada
Results of Operations for Oil and Natural Gas Producing Activities
Net revenues	12,392	15,093
Production costs	(8,546)	(9,230)
Depletion	(2,801)	(4,139)
Impairment of assets	0	(2,164)
Pre-tax results of operations	1,045	(440)
Estimated income tax expense	214	320
Results of operations	831	(760)
United States
Results of Operations for Oil and Natural Gas Producing Activities
Net revenues	1,171	2,303
Production costs	(420)	(619)
Depletion	(343)	(808)
Impairment of assets	(865)	(721)
Pre-tax results of operations	(457)	155
Estimated income tax expense	10	20
Results of operations	$ (467)	$ 135