PROPERTY AND EQUIPMENT AND ASSET RETIREMENT OBLIGATION - PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Property and equipment
Proved Properties, Net Property and Equipment	$ 9,153	$ 16,554
Net other property and equipment	9	12
Total Gross Property and Equipment	75,011	84,066
Total Accumulated Depletion, Depreciation, Amortization, and Impairment	(65,849)	(67,500)
Total property and equipment, net	9,162	16,566
Oil and natural gas properties
Property and equipment
Proved Properties, Gross Property and Equipment	74,511	83,557
Proved Properties, Accumulated Depletion, Depreciation, Amortization, and Impairment	(65,358)	(67,003)
Proved Properties, Net Property and Equipment	9,153	16,554
Other property and equipment
Property and equipment
Gross Property and Equipment	500	509
Property, Plant and Equipment, Other, Accumulated Depletion, Depreciation, Amortization, And Impairment	(491)	(497)
Net other property and equipment	$ 9	$ 12
Other property and equipment | Minimum
Property and equipment
Estimated useful lives	3 years	3 years
Other property and equipment | Maximum
Property and equipment
Estimated useful lives	10 years	10 years