Accounts Receivable, Unbilled Services and Deferred Revenue - Schedule of Accounts Receivable and Unbilled Services (Details) - USD ($) $ in Thousands	Apr. 30, 2025	Apr. 30, 2024	Apr. 30, 2023
Receivables [Abstract]
Accounts receivable	$ 6,865	$ 4,886	$ 3,843
Unbilled services	5,398	5,941	4,993
Total accounts receivable and unbilled services	12,263	10,827	8,836
Less: allowance for estimated credit losses	(1,029)	(1,301)	(825)
Total accounts receivable, net	$ 11,234	$ 9,526	$ 8,011