Capital Assets (Property and Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Oct. 01, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 251,510	$ 251,621
Less accumulated depreciation	(152,845)	(150,832)
Property and equipment, net	98,665	100,789
Land and improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,862	2,865
Building and improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	58,336	59,350
Machinery and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 190,312	$ 189,406