Inventories - Additional Information (Detail) - USD ($) $ in Thousands	Jan. 31, 2022	Apr. 30, 2021
Inventory [Line Items]
Inventories	$ 19,947	$ 16,517
International Subsidiaries
Inventory [Line Items]
Inventories	$ 2,238	$ 2,560

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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-Publisher FASB
-Name Accounting Standards Codification
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