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Inventories (Detail) - USD ($)
$ in Thousands
Nov. 03, 2019
Apr. 28, 2019
Oct. 28, 2018
Inventory Disclosure [Abstract]      
Raw materials $ 6,872 $ 5,617 $ 5,397
Work-in-process 2,973 2,289 2,082
Finished goods 45,383 42,954 43,122
Inventories $ 55,228 $ 50,860 [1] $ 50,601
[1] Derived from audited financial statements.