Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for Market Forge Acquisition (Details) (USD $) In Thousands, unless otherwise specified	Jun. 28, 2014	Dec. 28, 2013	Jan. 07, 2014 Market Forge [Member]	Jan. 07, 2014 Market Forge [Member] as initially reported	Jan. 07, 2014 Market Forge [Member] Scenario, Adjustment [Member]
Business Acquisition [Line Items]
Property, plant and equipment			$ 120	$ 120	$ 0
Current assets			2,051	2,051	0
Goodwill			5,619	5,252	367
Other intangibles			4,191	4,191	0
Current liabilities			4,741	4,374	367
Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Initial Consideration, Net			7,240	7,240	0
Business Acquisition, Deferred Payments			3,000	3,000	0
Business Combination, Contingent Consideration	10,174	8,628	1,413	1,374	39
Net assets acquired and liabilities assumed			$ 11,653	$ 11,614	$ 39