SUPPLEMENTARY OIL AND NATURAL GAS INFORMATION (UNAUDITED) - COSTS INCURRED IN OIL AND NATURAL GAS PROPERTY ACQUISITION, EXPLORATION AND DEVELOPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Costs Incurred in Oil and Natural Gas Property Acquisition, Exploration and Development
Acquisition of proved properties	$ 146	$ 66
Acquisition of unproved properties	0	0
Exploration costs	34	716
Development costs	4,048	11,430
Total	4,228	12,212
Canada
Costs Incurred in Oil and Natural Gas Property Acquisition, Exploration and Development
Acquisition of proved properties	146	66
Acquisition of unproved properties	0	0
Exploration costs	34	461
Development costs	3,865	6,331
Total	4,045	6,858
United States
Costs Incurred in Oil and Natural Gas Property Acquisition, Exploration and Development
Acquisition of proved properties	0	0
Acquisition of unproved properties	0	0
Exploration costs	0	255
Development costs	183	5,099
Total	$ 183	$ 5,354