SUPPLEMENTARY OIL AND NATURAL GAS INFORMATION (UNAUDITED) - CAPITALIZED COSTS RELATING TO OIL AND NATURAL GAS PRODUCING ACTIVITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Capitalized Costs Relating to Oil and Natural Gas Producing Activities
Proved properties	$ 74,511	$ 83,557
Unproved properties	0	0
Total capitalized costs	74,511	83,557
Accumulated depletion, depreciation, and impairment	65,358	67,003
Net capitalized costs	9,153	16,554
Canada
Capitalized Costs Relating to Oil and Natural Gas Producing Activities
Proved properties	74,511	76,963
Unproved properties	0	0
Total capitalized costs	74,511	76,963
Accumulated depletion, depreciation, and impairment	65,358	64,402
Net capitalized costs	9,153	12,561
United States
Capitalized Costs Relating to Oil and Natural Gas Producing Activities
Proved properties	0	6,594
Unproved properties	0	0
Total capitalized costs	0	6,594
Accumulated depletion, depreciation, and impairment	0	2,601
Net capitalized costs	$ 0	$ 3,993