SEGMENT AND GEOGRAPHIC INFORMATION - GEOGRAPHIC AREAS (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Geographic information
Long-lived assets	$ 21,786	$ 26,336
Revenue (before interest income)	21,636	25,182
United States
Geographic information
Long-lived assets	9,214	10,373
Revenue (before interest income)	6,452	8,448
Canada
Geographic information
Long-lived assets	12,572	15,963
Revenue (before interest income)	$ 15,184	$ 16,734