Inventories (Details) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2013	Mar. 30, 2013
Components of inventory
Raw materials	$ 11,434	$ 12,484
Work-in-process	155,699	165,034
Finished goods	19,667	23,732
Total inventories	$ 186,800	$ 201,250	[1]

[1] Derived from audited financial statements