DEBT - Summary of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
Interest Expense, Debt [Line Items]
Debt instrument, interest expense	$ 700	$ 600	$ 1,372	$ 1,178
SPHG Holdings | Interest expense related to contractual interest coupon
Interest Expense, Debt [Line Items]
Debt instrument, interest expense	286	287	572	573
SPHG Holdings | Interest expense related to accretion of the discount
Interest Expense, Debt [Line Items]
Debt instrument, interest expense	$ 414	$ 313	$ 800	$ 605