XML 53 R41.htm IDEA: XBRL DOCUMENT v3.8.0.1
Inventories (Details) - USD ($)
$ in Thousands
Jan. 27, 2018
Apr. 29, 2017
Inventory Disclosure [Abstract]    
Raw materials $ 26,833 $ 24,801
Work-in-process 11,813 7,366
Finished goods 31,805 34,319
Inventories $ 70,451 $ 66,486