LOSS PER SHARE - Reconciliation of basic net loss to diluted net loss per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
LOSS PER SHARE
Net loss applicable to common shareholders	$ (83,047)	$ (366)
Weighted average common shares outstanding, basic (in thousands) (in shares)	21,124	11,016
Weighted average common shares outstanding, diluted (in thousands) (in shares)	21,124	11,016
Basic net income per share (in dollars per share)	$ (3.93)	$ (0.03)
Diluted net income per share (in dollar per share)	$ (3.93)	$ (0.03)