SEGMENT AND GEOGRAPHIC INFORMATION - GEOGRAPHIC AREAS (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Geographic information
Long-lived assets	$ 15,582	$ 21,504
Revenue (before interest income)	13,643	17,987
United States
Geographic information
Long-lived assets	5,965	8,932
Revenue (before interest income)	1,172	2,803
Canada
Geographic information
Long-lived assets	9,617	12,572
Revenue (before interest income)	$ 12,471	$ 15,184