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Accounts Receivable, Unbilled Services and Deferred Revenue - Schedule of Accounts Receivable, Unbilled Services, And Advanced Billings (Details) - USD ($) $ in Thousands | Jul. 31, 2025 | Apr. 30, 2025 | Apr. 30, 2024
--- | --- | --- | ---
Receivables [Abstract] |  |  |
Accounts receivable | $ 5,139 | $ 6,835 | $ 4,886
Unbilled services | 5,335 | 5,398 | 5,941
Total accounts receivable and unbilled services | 10,474 | 12,233 | 10,827
Less: Allowances for doubtful accounts and estimated credit losses | (1,000) | (1,029) | (1,301)
Total accounts receivable, net | $ 9,474 | $ 11,204 | $ 9,526

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