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FAIR VALUE MEASUREMENTS - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2023
Apr. 30, 2024
Apr. 30, 2023
Jan. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investments, fair value disclosure   $ 0    
Debt securities, available-for-sale, unrealized gain (loss)     $ 0  
Long-Term Debt        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Change in fair value   (400)    
SPHG Note        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Change in fair value   442    
Convertible Loan Note Investment        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Change in fair value   (1,227)    
Fair value, measurements, recurring | SPHG Note        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Liabilities, fair value disclosure   $ 12,903   $ 12,900
Money market funds | Fair value, measurements, recurring        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Assets, fair value disclosure, understated amount $ 54,200