Revenue Recognition - Disaggregated Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024
Revenues:
Revenues	$ 25,007	$ 25,536	$ 76,485	$ 77,127
Domestic
Revenues:
Revenues	19,411	20,040	59,695	60,646
International
Revenues:
Revenues	$ 5,596	$ 5,496	$ 16,790	$ 16,481

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details