Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for Concordia Acquisition (Details) - USD ($) $ in Thousands	Jul. 04, 2015	Jan. 03, 2015	Sep. 08, 2014
Business Acquisition [Line Items]
Business Combination, Contingent Consideration	$ 7,234	$ 7,053
Concordia [Member]
Business Acquisition [Line Items]
Cash			$ 345
Current deferred tax asset			424
Current assets			3,259
Goodwill			5,295
Other intangibles			4,500
Long-term tax asset			1,981
Current liabilities			(2,280)
Other non-current liabilities			(743)
Consideration paid at closing			12,781
Business Combination, Contingent Consideration			743
Net assets acquired and liabilities assumed			13,524
as initially reported | Concordia [Member]
Business Acquisition [Line Items]
Cash			345
Current deferred tax asset			0
Current assets			3,767
Goodwill			11,255
Other intangibles			4,500
Long-term tax asset			0
Current liabilities			(2,296)
Other non-current liabilities			(4,710)
Consideration paid at closing			12,861
Business Combination, Contingent Consideration			4,710
Net assets acquired and liabilities assumed			17,571
Scenario, Adjustment [Member] | Concordia [Member]
Business Acquisition [Line Items]
Cash			0
Current deferred tax asset			424
Current assets			(508)
Goodwill			(5,960)
Other intangibles			0
Current liabilities			16
Other non-current liabilities			3,967
Consideration paid at closing			(80)
Business Combination, Contingent Consideration			(3,967)
Net assets acquired and liabilities assumed			$ (4,047)