Accounts Receivable, Unbilled Services and Deferred Revenue - Summary of Accounts Receivable and Unbilled Services (Details) - USD ($) $ in Thousands	Jul. 31, 2024	Apr. 30, 2024	Apr. 30, 2023
Receivables [Abstract]
Accounts receivable	$ 4,722	$ 4,886	$ 3,843
Unbilled services	5,540	5,941	4,993
Total accounts receivable and unbilled services	10,262	10,827	8,836
Less: Allowances for credit losses and bad debt	(1,230)	(1,301)	(825)
Total accounts receivable, net	$ 9,032	$ 9,526	$ 8,011