Note 6 - Derivative Financial Instruments (Detail) (USD $)	Jul. 28, 2012	Apr. 28, 2012
Derivative, Notional Amount	$ 18,900,000
Price Risk Cash Flow Hedge Unrealized Gain (Loss) to be Reclassified During Next 12 Months	1,900,000
Derivative Asset, Fair Value, Net	$ 1,900,000	$ 503,000