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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
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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.

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