Note 7 - Other Expense (Details) - Other Expense (Income) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 27, 2013	Apr. 28, 2012	Apr. 30, 2011
Other Expense (Income) [Abstract]
Interest income	$ (37)	$ (69)	$ (140)
Loss on disposal of property, net	63	7	82
Other	147	147	78
Total	$ 173	$ 85	$ 20