SEGMENT AND GEOGRAPHIC INFORMATION - ASSETS BY SEGMENT (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Assets By Segment:
Total assets	$ 20,812	$ 30,669
Continuing Operations
Assets By Segment:
Total assets	20,812	28,852
Cash and cash equivalents | Continuing Operations
Assets By Segment:
Total assets	2,886	4,285
Asset for retirement benefits | Continuing Operations
Assets By Segment:
Total assets	5,928	4,899
Corporate and other | Continuing Operations
Assets By Segment:
Total assets	880	260
Oil and natural gas | Operating segments | Canada | Continuing Operations
Assets By Segment:
Total assets	11,118	15,218
Oil and natural gas | Operating segments | United States | Continuing Operations
Assets By Segment:
Total assets	$ 0	$ 4,190