CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Oct. 27, 2013	Oct. 28, 2012	Oct. 27, 2013	Oct. 28, 2012
Net income	$ 3,096	$ 8,268	$ 6,326	$ 11,792
Other comprehensive (loss) income
Unrealized (losses) gains on short-term investments	22	11	(113)	44
Total other comprehensive (loss) income	22	11	(113)	44
Comprehensive income	$ 3,118	$ 8,279	$ 6,213	$ 11,836