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Selected Financial Statement Data Inventory (Details) - USD ($)
$ in Thousands
Aug. 01, 2020
May 02, 2020
Selected Financial Statement Data [Abstract]    
Raw materials $ 33,076 $ 35,306
Work-in-process 9,943 12,102
Finished goods 38,416 39,395
Inventories $ 81,435 $ 86,803