Acquisitions and Purchase Accounting - Nieco Acquisition (Details) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012	Jan. 01, 2011	Oct. 31, 2012 Nieco [Member]	Oct. 31, 2012 as initially reported [Member] Nieco [Member]	Oct. 31, 2012 Scenario, Adjustment [Member] Nieco [Member]
Business Acquisition [Line Items]
Business Acquisition, Purchase Price Allocation, Current Assets, Cash and Cash Equivalents				$ 140	$ 140	$ 0
Goodwill	687,955	526,011	477,812
Other non-current liabilities				(3,645)	(3,058)	(587)
Consideration paid at closing				24,000
Contingent consideration				3,600
Net assets acquired and liabilities assumed				27,058
Business Acquisition, Purchase Price Allocation, Current Assets				4,011	4,011	0
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment				268	268	0
Business Acquisition, Purchase Price Allocation, Goodwill, Expected Tax Deductible Amount				15,382	18,855	(3,473)
Business Acquisition Purchase Price Allocation Intangible Assets				9,680	5,620	4,060
Business Acquisition, Purchase Price Allocation, Current Liabilities				(1,836)	(1,836)	0
Business Acquisition Cost Of Acquired Entity Consideration Paid				24,000		0
Business Acquisition, Contingent Consideration, at Fair Value				3,645	3,058	587
Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net				$ 27,645		$ 587