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Accounts Receivable, Unbilled Services and Deferred Revenue - Narrative (Details) - USD ($) $ in Thousands | Jan. 31, 2024 | Oct. 31, 2023 | Apr. 30, 2023 | Oct. 31, 2022 | Apr. 30, 2022
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Receivables [Abstract] |  |  |  |  |
Accounts receivable, net | $ 7,895 | $ 7,700 | $ 8,011 | $ 9,000 | $ 9,500
Deferred revenue | $ 13,329 | $ 13,000 | $ 12,776 | $ 11,200 | $ 11,100

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