Acquisitions (Details)	3 Months Ended											12 Months Ended			0 Months Ended		12 Months Ended			12 Months Ended		12 Months Ended		12 Months Ended			12 Months Ended	0 Months Ended
	Dec. 28, 2013 USD ($)		Sep. 28, 2013 USD ($)		Jun. 29, 2013 USD ($)		Mar. 30, 2013 USD ($)	Dec. 29, 2012 USD ($)	Sep. 29, 2012 USD ($)	Jun. 30, 2012 USD ($)	Mar. 31, 2012 USD ($)	Dec. 28, 2013 USD ($)	Dec. 29, 2012 USD ($)	Dec. 31, 2011 USD ($)	Oct. 28, 2013 Rothsay [Member] USD ($) facilities	Oct. 28, 2013 Rothsay [Member] CAD	Dec. 28, 2013 Rothsay [Member] USD ($)	Dec. 28, 2013 Rothsay [Member] Routes [Member]	Oct. 28, 2013 Rothsay [Member] Routes [Member] USD ($)	Dec. 28, 2013 Rothsay [Member] Permits [Member]	Oct. 28, 2013 Rothsay [Member] Permits [Member] USD ($)	Dec. 28, 2013 Rothsay [Member] Trade Names [Member]	Oct. 28, 2013 Rothsay [Member] Trade Names [Member] USD ($)	Dec. 28, 2013 Rothsay [Member] Non-compete agreements [Member]	Oct. 28, 2013 Rothsay [Member] Non-compete agreements [Member] USD ($)	Oct. 28, 2013 Rothsay [Member] Biodiesel [Member] facilities	Dec. 28, 2013 Terra Holding Company [Member] USD ($)	Jun. 08, 2012 BioPur Transaction [Member] USD ($)
Business Acquisition [Line Items]
Business Combination, Consideration Transferred															$ 612,600,000	640,200,000												$ 3,000,000
Foreign Currency Exchange Rate, Translation															0.9569	0.9569
Cash consideration paid																644,500,000
Business Combination, Contingent Receivable																4,300,000
Number Of Plants															5	5										1
Revenues																	32,400,000
Net income	22,493,000	[1]	27,651,000	[1]	26,418,000	[1]	32,405,000	28,802,000	37,172,000	36,225,000	28,571,000	108,967,000	130,770,000	169,418,000			(7,300,000)
Goodwill	701,637,000							381,369,000				701,637,000	381,369,000		261,668,000												65,000,000
Business Combination, Goodwill Deductible for Tax Purposes, Percent															75.00%	75.00%
Acquired finite-lived Intangible assets, weighted-average useful life																		21 years		13 years		4 years		7 years			12 years	9 years
Business Acquisition, Transaction Costs															10,800,000
Deferred Finance Costs, Gross															14,400,000
Payments to Acquire Businesses, Net of Cash Acquired												734,075,000	3,000,000	1,754,000													121,400,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net [Abstract]
Property and equipment															139,304,000												27,700,000	600,000
Identifiable intangibles															240,386,000				172,600,000		55,600,000		9,000,000		3,200,000		46,200,000	2,400,000
Deferred tax liability															15,031,000												24,100,000
Working Capital																											6,600,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount																											$ 5,200,000

[1] Included in net income are $0.8 million in transaction costs in the second quarter of fiscal 2013, $8.3 million in transaction costs in the third quarter of fiscal 2013 and $14.2 million in the fourth quarter relating to the Terra Transaction, Rothsay Acquisition and the VION Acquisition.