Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for Concordia Acquisition (Details) (USD $) In Thousands, unless otherwise specified	Apr. 04, 2015	Jan. 03, 2015	Sep. 08, 2014
Business Acquisition [Line Items]
Business Combination, Contingent Consideration	$ 6,619	$ 9,200
Concordia [Member]
Business Acquisition [Line Items]
Cash			345
Current deferred tax asset			424
Current assets			3,259
Goodwill			6,651
Other intangibles			4,500
Long-term tax asset			1,981
Current liabilities			2,280
Other non-current liabilities			(2,099)
Consideration paid at closing			12,781
Business Combination, Contingent Consideration			2,099
Net assets acquired and liabilities assumed			14,880
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			(4,604)
Other intangibles			0
Current liabilities			(16)
Other non-current liabilities			2,611
Consideration paid at closing			(80)
Business Combination, Contingent Consideration			(2,611)
Net assets acquired and liabilities assumed			$ (2,691)