SEGMENT AND GEOGRAPHIC INFORMATION - ASSETS BY SEGMENT (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Sep. 30, 2025
Assets By Segment:
Total assets	$ 21,547	$ 20,812
Continuing Operations
Assets By Segment:
Total assets	21,547	20,812
Cash and cash equivalents | Continuing Operations
Assets By Segment:
Total assets	4,016	2,886
Asset for retirement benefits | Continuing Operations
Assets By Segment:
Total assets	6,184	5,928
Corporate and other | Continuing Operations
Assets By Segment:
Total assets	2,831	880
Oil and natural gas | Operating segments | Canada | Continuing Operations
Assets By Segment:
Total assets	$ 8,516	$ 11,118