Note 5 - Derivative Financial Instruments (Details) (USD $)	Jan. 25, 2014	Apr. 27, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative, Notional Amount	$ 8,200,000
Price Risk Cash Flow Hedge Unrealized Gain (Loss) to be Reclassified During Next 12 Months	(356,000)
Derivative Liability, Fair Value, Gross Liability	$ 356,000	$ 964,000