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OTHER ASSETS - Additional Information (Details) - Property and equipment - USD ($)
3 Months Ended 9 Months Ended
Jan. 31, 2024
Jan. 31, 2023
Jan. 31, 2024
Jan. 31, 2023
OTHER ASSETS        
Depreciation expense associated with property and equipment $ 19,000 $ 12,000 $ 47,000 $ 33,000
Right of use assets        
OTHER ASSETS        
Amortization of leased cost $ 7,000 $ 6,000 $ 19,000 $ 18,000