Consolidated Condensed Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Consolidated Condensed Statements of Comprehensive Income [Abstract]
Net income	$ 852	$ 33,367	$ 11,100	$ 54,009
Net changes to available-for-sale securities
Unrealized gain on marketable securities	42	256	142	216
Net changes to foreign currency derivatives
Unrealized loss on foreign currency derivatives	(29)		(29)
Provision for income taxes	(15)	(90)	(50)	(23)
Comprehensive income	$ 850	$ 33,533	$ 11,163	$ 54,202