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Inventories - Components of Inventories (Detail) - USD ($)
$ in Thousands
Feb. 29, 2020
Feb. 28, 2019
Inventory Disclosure [Abstract]    
Raw material $ 20,267 $ 21,717
Work-in-process 4,557 4,172
Finished goods 10,011 9,522
Inventories $ 34,835 $ 35,411