Fair Value Measurement (Levels 1-3) (Details) - Measured on a Recurring Basis - USD ($) $ in Thousands	Jul. 03, 2016	Apr. 03, 2016
Quoted Prices in Active Markets for Identical Assets (Level 1)
Cash Equivalents and Short-Term Investments:
US government treasuries and agencies securities	$ 50,396	$ 32,519
Money market funds	38,408	124,504
Asset-backed securities	0	0
Corporate bonds		0
International government bonds	0	0
Corporate commercial paper	0	0
Bank deposits	0	0
Repurchase agreement	0	0
Municipal bonds	0	0
Total assets measured at fair value	88,804	157,023
Significant Other Observable Inputs (Level 2)
Cash Equivalents and Short-Term Investments:
US government treasuries and agencies securities	0	0
Money market funds	0	0
Asset-backed securities	10,337	10,515
Corporate bonds	120,287	91,388
International government bonds	2,229	2,208
Corporate commercial paper	5,972	1,992
Bank deposits	10,040	11,711
Repurchase agreement	367	114
Municipal bonds	900	900
Total assets measured at fair value	150,132	118,828
Significant Unobservable Inputs (Level 3)
Cash Equivalents and Short-Term Investments:
US government treasuries and agencies securities	0	0
Money market funds	0	0
Asset-backed securities	0	0
Corporate bonds	0	0
International government bonds	0	0
Corporate commercial paper	0	0
Bank deposits	0	0
Repurchase agreement	0	0
Municipal bonds	0	0
Total assets measured at fair value	0	0
Total
Cash Equivalents and Short-Term Investments:
US government treasuries and agencies securities	50,396	32,519
Money market funds	38,408	124,504
Asset-backed securities	10,337	10,515
Corporate bonds	120,287	91,388
International government bonds	2,229	2,208
Corporate commercial paper	5,972	1,992
Bank deposits	10,040	11,711
Repurchase agreement	367	114
Municipal bonds	900	900
Total assets measured at fair value	$ 238,936	$ 275,851