Acquisitions and Purchase Accounting - Distributors Acquisition (Details) (USD $) In Thousands, unless otherwise specified	Jan. 03, 2015	Dec. 28, 2013	Jan. 01, 2011
Business Acquisition [Line Items]
Goodwill	$ 808,491	$ 687,955	$ 526,011
Distributors [Member]
Business Acquisition [Line Items]
Goodwill		5,308
Current assets		17,791
Property, plant and equipment		1,318
Current liabilities		804
Net assets acquired and liabilities assumed		23,613
Forgiveness of liabilities owed to Viking	8,697	8,697
Consideration paid at closing		14,916
as initially reported [Member] | Distributors [Member]
Business Acquisition [Line Items]
Goodwill		1,709
Current assets		21,390
Property, plant and equipment		1,318
Current liabilities		804
Net assets acquired and liabilities assumed		23,613
Forgiveness of liabilities owed to Viking		8,697
Consideration paid at closing		14,916
Scenario, Adjustment [Member] | Distributors [Member]
Business Acquisition [Line Items]
Goodwill		3,599
Current assets		(3,599)
Property, plant and equipment		0
Current liabilities		0
Net assets acquired and liabilities assumed		0
Forgiveness of liabilities owed to Viking		0
Consideration paid at closing		$ 0