Segments and Geographic Information - Sale for Geographic Areas (Details) - USD ($) $ in Thousands	12 Months Ended
May 31, 2025	May 31, 2024	May 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 292,498	$ 303,914	$ 338,752
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	250,983	251,486	282,713
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 41,515	$ 52,428	$ 56,039

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