Business Acquisition (Fair Values Assigned To The Assets And Liabilities Assumed) (Details) - USD ($) $ in Thousands	Oct. 03, 2015	Dec. 27, 2014	Sep. 27, 2014	Jun. 17, 2014	Sep. 28, 2013
Business Acquisition [Line Items]
Goodwill	$ 27,677		$ 26,123		$ 16,624
Roehrig Engineering, Inc. "REI" [Member]
Business Acquisition [Line Items]
Accounts receivable and inventory				$ 1,811
Machinery and equipment				477
Deferred tax liability		$ (1,734)		(1,445)
Current liabilities				(1,893)
Identifiable intangible assets				4,709
Net assets acquired				3,659
Goodwill				11,183
Total purchase price consideration				$ 14,842