STOCKHOLDERS EQUITY AND LOSS PER SHARE - Basic and diluted net (loss) income per share (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Numerator:
Consolidated net loss	$ (108,885)	$ (104,902)
Less: Net (loss) income attributable to noncontrolling interests	(440)	238
Net loss attributable to common shareholders	$ (108,445)	$ (105,140)
Denominator:
Weighted-average shares outstanding - Basic (in shares)	25,897,000	25,641,000
Weighted-average shares outstanding - Diluted (in shares)	25,897,000	25,641,000
Anti-dilutive common share equivalents (in shares)	10,935,000	5,763,000
Convertible Debt Securities
Denominator:
Anti-dilutive common share equivalents (in shares)	2,859,306	3,040,268
Warrants
Denominator:
Anti-dilutive common share equivalents (in shares)	4,146,250