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Summary of Significant Accounting Policies and Concentrations of Risk (Inventory) (Details) - USD ($)
$ in Thousands
Apr. 01, 2017
Apr. 02, 2016
Inventory Disclosure [Abstract]    
Raw materials $ 14,517 $ 15,346
Work-in-process 161,120 123,675
Finished goods 51,396 39,529
Total inventories $ 227,033 $ 178,550