Note 2 - Property Plant, and Equipment - Summary of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Oct. 31, 2015	May. 02, 2015
Land	$ 9,500	$ 9,500
Buildings and improvements	50,800	50,405
Machinery and equipment	160,637	156,702
Total	220,937	216,607
Less accumulated depreciation	(161,630)	(156,425)
Property, plant and equipment – net	$ 59,307	$ 60,182