Note 2 - Property, Plant and Equipment (Details) - Summary of Property, Plant and Equipment (USD $) In Thousands, unless otherwise specified	May 03, 2014	Apr. 27, 2013
Summary of Property, Plant and Equipment [Abstract]
Land	$ 9,779	$ 9,779
Buildings and improvements	51,494	49,391
Machinery and equipment	148,699	141,314
Total	209,972	200,484
Less accumulated depreciation	(150,478)	(143,177)
Property, plant and equipment – net	$ 59,494	$ 57,307