CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 27, 2012	Nov. 26, 2011	Oct. 27, 2012	Nov. 26, 2011
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Unrealized holding gains (losses) on securities arising during period, Tax Amount	$ 0	$ 13	$ 1	$ 61
Reclassification adjustment for gains included in net income, Tax Amount	$ 0	$ 25	$ 39	$ 44