Accounts Receivable, Unbilled Services and Deferred Revenue - Schedule of Accounts Receivable, Unbilled Services, And Advanced Billings (Details) - USD ($) $ in Thousands	Jan. 31, 2025	Apr. 30, 2024	Apr. 30, 2023
Receivables [Abstract]
Accounts receivable	$ 10,976	$ 4,886	$ 3,843
Unbilled services	5,787	5,941	4,993
Total accounts receivable and unbilled services	16,763	10,827	8,836
Less: Allowances for doubtful accounts and estimated credit losses	(981)	(1,301)	(825)
Total accounts receivable, net	$ 15,782	$ 9,526	$ 8,011