Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jul. 01, 2012
Net income (loss)	$ 806	$ (576)
Changes in market value of investments, net of tax:
Changes in unrealized losses	(584)	(269)
Reclassification adjustment for net realized losses	(59)	(38)
Net change in market value of investments	(643)	(307)
Comprehensive income (loss)	$ 163	$ (883)