SEGMENT AND GEOGRAPHIC INFORMATION - GEOGRAPHIC AREAS (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Sep. 30, 2025
Geographic information
Long-lived assets	$ 15,640		$ 15,582
Revenue (before interest income)	2,731	$ 3,908
United States
Geographic information
Long-lived assets	6,076		5,965
Revenue (before interest income)	70	355
Canada
Geographic information
Long-lived assets	9,564		$ 9,617
Revenue (before interest income)	$ 2,661	$ 3,553