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DEBT - Net Carrying Value of the Notes (Detail) - USD ($)
Apr. 30, 2021
Jul. 31, 2020
Feb. 28, 2019
Debt Instrument [Line Items]      
Carrying amount of equity component $ 8,200,000 $ 8,200,000  
Total debt, net 374,200,000 379,049,000  
SPHG Holdings | 7.50% Convertible Senior Note due March 1, 2024      
Debt Instrument [Line Items]      
Principal amount of note 14,940,000 14,940,000 $ 14,900,000
Debt Instrument, Unamortized Discount (5,956,000) (6,886,000)  
Total debt, net $ 8,984,000 $ 8,054,000