Accounts Receivable, Unbilled Services and Deferred Revenue - Schedule of Accounts Receivable, Unbilled Services, And Advanced Billings (Details) - USD ($) $ in Thousands	Oct. 31, 2025	Apr. 30, 2025	Apr. 30, 2024
Receivables [Abstract]
Accounts receivable	$ 5,381	$ 6,835	$ 4,886
Unbilled services	7,171	5,398	5,941
Total accounts receivable and unbilled services	12,552	12,233	10,827
Less: Allowances for doubtful accounts and estimated credit losses	(1,013)	(1,029)	(1,301)
Total accounts receivable, net	$ 11,539	$ 11,204	$ 9,526