SEGMENT AND GEOGRAPHIC INFORMATION - GEOGRAPHIC AREAS (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Geographic information
Long-lived assets	$ 26,336	$ 17,118
Total (excluding interest income)	25,182	28,527
United States
Geographic information
Long-lived assets	10,373	4,540
Total (excluding interest income)	8,448	9,340
Canada
Geographic information
Long-lived assets	15,963	12,578
Total (excluding interest income)	$ 16,734	$ 19,187