STOCKHOLDERS EQUITY AND (LOSS) INCOME PER SHARE - Basic and diluted net (loss) income per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
INCOME (LOSS) PER SHARE
Net income (loss) applicable to common shareholders	$ (337,018)	$ 10,895
Weighted average common shares outstanding, basic (in thousands) (in shares)	24,354	13,191
Weighted average common shares outstanding, diluted (in thousands) (in shares)	24,354	13,865
Basic net (loss) income per share (in dollars per share)	$ (13.84)	$ 0.83
Diluted net (loss) income per share (in dollar per share)	$ (13.84)	$ 0.19