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Revenue Recognition - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Oct. 31, 2023
Oct. 31, 2022
Oct. 31, 2023
Oct. 31, 2022
Apr. 30, 2023
Revenue Recognition [Line Items]          
Deferred revenue recognized     $ 30.3    
Deferred commissions $ 2.9   2.9   $ 3.0
Amortization of sales commissions 0.4 $ 0.4 0.8 $ 0.8  
Impairment loss $ 0.0 $ 0.0 $ 0.0 $ 0.0  
Minimum          
Revenue Recognition [Line Items]          
Contractual period of maintenance contract     1 year    
Maximum          
Revenue Recognition [Line Items]          
Contractual period of maintenance contract     3 years