Business Acquisition (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended			9 Months Ended
	Jan. 24, 2014	Oct. 04, 2015	Sep. 28, 2014	Jun. 29, 2014	Oct. 04, 2015	Sep. 28, 2014
Business Acquisition [Line Items]
Net sales		$ 90,901	$ 95,463		$ 294,271	$ 270,329
Tech Ord [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 10,534
Cash Paid to Acquire Business	10,000			$ 534
Estimated Amount of Acquired Receivable Uncollectible	$ 20
Revenue of Acquiree Included in Consolidated Income Statement Since Acquisition Date			5,294			11,301
Earnings of Acquiree Included in Consolidated Income Statement Since Acquisition Date			$ 171			$ 876