SEGMENT AND GEOGRAPHIC INFORMATION - GEOGRAPHIC AREAS (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Geographic information
Long-lived assets	$ 17,118	$ 6,400
Total (excluding interest income)	28,527	18,105
United States
Geographic information
Long-lived assets	4,540	4,180
Total (excluding interest income)	9,340	7,700
Canada
Geographic information
Long-lived assets	12,578	2,220
Total (excluding interest income)	$ 19,187	$ 10,405