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Accounts Receivable, Unbilled Services and Deferred Revenue - Summary of Accounts Receivable and Unbilled Services (Details) - USD ($)
$ in Thousands
Jul. 31, 2023
Apr. 30, 2023
Apr. 30, 2022
Receivables [Abstract]      
Accounts receivable $ 5,705 $ 3,843  
Unbilled services 4,229 4,993  
Total accounts receivable and unbilled services 9,934 8,836  
Less allowances (986) (825)  
Total accounts receivable, net $ 8,948 $ 8,011 $ 9,500