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Business Acquisition (Fair Values Assigned To The Assets And Liabilities Assumed) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 27, 2014	Sep. 27, 2014	Jun. 17, 2014
Business Acquisition [Line Items]
Goodwill	$ 27,574us-gaap_Goodwill	$ 26,123us-gaap_Goodwill
Roehrig Engineering, Inc. "REI" [Member]
Business Acquisition [Line Items]
Accounts receivable and inventory			1,763
Machinery and equipment			477
Deferred tax liability			(1,445)
Current liabilities			(1,900)
Identifiable intangible assets			4,593
Net liabilities acquired			3,488
Goodwill			11,354
Total purchase price			$ 14,842