LOSS PER SHARE - Reconciliation of Loss Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Earnings Per Share [Abstract]
Net loss	$ (44,391)	$ (5,284)
Less: Preferred dividends on redeemable preferred stock	(2,129)	(2,129)
Net loss attributable to common stockholders	$ (46,520)	$ (7,413)
Weighted average common shares outstanding (in shares)	62,142	61,644
Basic net loss per share attributable to common stockholders (in usd per share)	$ (0.75)	$ (0.12)
Diluted net loss per share attributable to common stockholders (in usd per share)	$ (0.75)	$ (0.12)