Property, Plant and Equipment (Property, Plant and Equipment) (Details) - USD ($) $ in Thousands	May 27, 2017	Aug. 27, 2016
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	$ 201,566	$ 185,858
Less accumulated depreciation	(132,910)	(129,927)
Total property, plant and equipment, net	68,656	55,931
Land [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	3,864	3,864
Buildings and building improvements [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	71,655	62,073
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	99,394	95,087
Software [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	17,672	15,878
Transportation [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment, gross	$ 8,981	$ 8,956