XML 52 R56.htm IDEA: XBRL DOCUMENT v3.20.1
Inventories - Summary of Inventories (Detail) - USD ($)
$ in Thousands
Feb. 02, 2020
Apr. 28, 2019
Jan. 27, 2019
Inventory Disclosure [Abstract]      
Raw materials $ 7,607 $ 5,617 $ 5,745
Work-in-process 2,537 2,289 2,610
Finished goods 47,431 42,954 47,060
Inventories $ 57,575 $ 50,860 [1] $ 55,415
[1] Derived from audited financial statements.