Fair Value of Financial Instruments (Details 4) - Jul. 04, 2015 - Assets and liabilities measured at fair value on recurring basis - Auction rate securities - USD ($) $ in Thousands	Total	Total
Fair value assets reconciliation of changes
Balance at the beginning of the period	$ 7,401	$ 7,419
Loss included in other comprehensive income (loss)	(222)	(240)
Balance at the end of the period	$ 7,179	$ 7,179