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Derivatives (Details) € in Thousands, ¥ in Thousands, ¥ in Thousands, £ in Thousands, PLN in Thousands, BRL in Thousands, AUD in Thousands, $ in Thousands | 3 Months Ended | 12 Months Ended |  |
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Jan. 02, 2016 USD ($) | Oct. 03, 2015 USD ($) | Jul. 04, 2015 USD ($) | Apr. 04, 2015 USD ($) | Jan. 03, 2015 USD ($) | Sep. 27, 2014 USD ($) | Jun. 28, 2014 USD ($) | Mar. 29, 2014 USD ($) | Jan. 02, 2016 USD ($) month | Jan. 03, 2015 USD ($) | Dec. 28, 2013 USD ($) | Jan. 02, 2016 EUR (€) | Jan. 02, 2016 GBP (£) | Jan. 02, 2016 CNY (¥) | Jan. 02, 2016 AUD | Jan. 02, 2016 PLN | Jan. 02, 2016 BRL | Jan. 02, 2016 JPY (¥) | Nov. 30, 2013 EUR (€)
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of months cash flow hedge gain (loss) reclassified over | month |  |  |  |  |  |  |  |  | 12 |  |  |  |  |  |  |  |  |  |
Amount reclassified from accumulated other comprehensive loss into earnings over next 12 months |  |  |  |  |  |  |  |  | $ 3,000 |  |  |  |  |  |  |  |  |  |
Net income | $ 85,875 | $ (7,357) | $ 4,937 | $ 1,824 | $ 68,788 | $ 15,954 | $ 34,575 | $ (51,006) | 85,279 | $ 68,311 | $ 108,967 |  |  |  |  |  |  |  |
Asset Derivatives Fair Value | 4,458 |  |  |  | 12,228 |  |  |  | 4,458 | 12,228 |  |  |  |  |  |  |  |  |
Foreign Currency Transaction Gain (Loss), Unrealized |  |  |  |  |  |  |  |  | 0 | 0 | 27,516 |  |  |  |  |  |  |  |
Foreign currency gains/(losses) |  |  |  |  |  |  |  | 12,600 | (4,911) | (13,548) | 28,107 |  |  |  |  |  |  |  |
Liability Derivatives Fair Value | 4,437 |  |  |  | 3,015 |  |  |  | 4,437 | 3,015 |  |  |  |  |  |  |  |  |
Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net |  |  |  |  |  |  |  |  | 4,405 | 1,823 |  |  |  |  |  |  |  |  |
Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net |  |  |  |  |  |  |  |  | 1,517 | 4,064 |  |  |  |  |  |  |  |  |
Gain Recognized in Income on Derivatives, Ineffective Portion and Amount Excluded from Effectiveness Testing |  |  |  |  |  |  |  |  | 68 | 91 |  |  |  |  |  |  |  |  |
Gain/(loss) recognized in other comprehensive income (loss) |  |  |  |  |  |  |  |  | 4,400 | 1,800 |  |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax |  |  |  |  |  |  |  |  | 1,700 | 700 |  |  |  |  |  |  |  |  |
Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Derivatives Fair Value | 3,215 |  |  |  | 247 |  |  |  | 3,215 | 247 |  |  |  |  |  |  |  |  |
Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Derivatives Fair Value | 1,243 |  |  |  | 11,981 |  |  |  | 1,243 | 11,981 |  |  |  |  |  |  |  |  |
Liability Derivatives Fair Value | 4,437 |  |  |  | 3,015 |  |  |  | 4,437 | 3,015 |  |  |  |  |  |  |  |  |
Natural Gas Swap [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain/(loss) recognized in other comprehensive income (loss) |  |  |  |  |  |  |  |  |  | 11 | 248 |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax |  |  |  |  |  |  |  |  |  | 4 | 96 |  |  |  |  |  |  |  |
Corn Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain/(loss) recognized in other comprehensive income (loss) |  |  |  |  |  |  |  |  | 4,405 | 1,812 | 7,350 |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax |  |  |  |  |  |  |  |  | 1,710 | 704 | $ 2,852 |  |  |  |  |  |  |  |
Corn Option [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Derivatives Fair Value | 3,215 |  |  |  | 247 |  |  |  | 3,215 | 247 |  |  |  |  |  |  |  |  |
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Vion Ingredients [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | € |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 1,000,000
Derivative, Forward Exchange Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.346
Foreign Currency Transaction Gain (Loss), Unrealized |  |  |  |  | 27,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency gains/(losses) |  |  |  |  |  |  |  | $ 12,600 |  |  |  |  |  |  |  |  |  |  |
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Accrued Expenses [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Liability Derivatives Fair Value | 4,435 |  |  |  | 2,019 |  |  |  | 4,435 | 2,019 |  |  |  |  |  |  |  |  |
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Derivatives Fair Value | 644 |  |  |  | 11,559 |  |  |  | 644 | 11,559 |  |  |  |  |  |  |  |  |
Corn options and futures [Member] | Not Designated as Hedging Instrument [Member] | Accrued Expenses [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Liability Derivatives Fair Value | 2 |  |  |  | 3 |  |  |  | 2 | 3 |  |  |  |  |  |  |  |  |
Corn options and futures [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Derivatives Fair Value | 599 |  |  |  | 69 |  |  |  | 599 | 69 |  |  |  |  |  |  |  |  |
Heating Oil Swaps And Options [Member] | Not Designated as Hedging Instrument [Member] | Accrued Expenses [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Liability Derivatives Fair Value | 0 |  |  |  | 993 |  |  |  | 0 | 993 |  |  |  |  |  |  |  |  |
Heating Oil Swaps And Options [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Derivatives Fair Value | 0 |  |  |  | $ 353 |  |  |  | 0 | 353 |  |  |  |  |  |  |  |  |
Forward Contracts [Member] | Commodity Contract [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Forward Purchase Amount | 15,200 |  |  |  |  |  |  |  | 15,200 |  |  |  |  |  |  |  |  |  |
Cash Flow Hedging [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Cash Flow Hedging [Member] | Natural Gas Swap [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net |  |  |  |  |  |  |  |  | 0 | 11 |  |  |  |  |  |  |  |  |
Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net |  |  |  |  |  |  |  |  | 0 | 196 |  |  |  |  |  |  |  |  |
Gain or (Loss) Recognized in Income On Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing) |  |  |  |  |  |  |  |  | 0 | (1) |  |  |  |  |  |  |  |  |
Cash Flow Hedging [Member] | Corn Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net |  |  |  |  |  |  |  |  | 4,405 | 1,812 |  |  |  |  |  |  |  |  |
Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net |  |  |  |  |  |  |  |  | 1,517 | 3,868 |  |  |  |  |  |  |  |  |
Gain Recognized in Income on Derivatives, Ineffective Portion and Amount Excluded from Effectiveness Testing |  |  |  |  |  |  |  |  | 68 | $ 92 |  |  |  |  |  |  |  |  |
Short [Member] | Forward Contracts [Member] | BRI/EUR 1 [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | BRL |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | BRL 35,305 |  |
Short [Member] | Forward Contracts [Member] | BRI/EUR 2 [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | BRL |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | BRL 67,670 |  |
Short [Member] | Forward Contracts [Member] | EUR/USD [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | € |  |  |  |  |  |  |  |  |  |  |  | € 251,908 |  |  |  |  |  |  |
Short [Member] | Forward Contracts [Member] | EUR/PLN [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | € |  |  |  |  |  |  |  |  |  |  |  | 8,834 |  |  |  |  |  |  |
Short [Member] | Forward Contracts [Member] | EUR/JPN [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | € |  |  |  |  |  |  |  |  |  |  |  | 5,356 |  |  |  |  |  |  |
Short [Member] | Forward Contracts [Member] | EUR/CNY [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | € |  |  |  |  |  |  |  |  |  |  |  | 34,707 |  |  |  |  |  |  |
Short [Member] | Forward Contracts [Member] | EUR/AUD [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | € |  |  |  |  |  |  |  |  |  |  |  | 9,616 |  |  |  |  |  |  |
Short [Member] | Forward Contracts [Member] | PLN/EUR [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | PLN |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | PLN 16,380 |  |  |
Short [Member] | Forward Contracts [Member] | JPN/USD [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 53,039 |
Short [Member] | Forward Contracts [Member] | GBPEUR [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | £ |  |  |  |  |  |  |  |  |  |  |  |  | £ 72 |  |  |  |  |  |
Long [Member] | Forward Contracts [Member] | BRI/EUR 1 [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | € |  |  |  |  |  |  |  |  |  |  |  | 8,400 |  |  |  |  |  |  |
Long [Member] | Forward Contracts [Member] | BRI/EUR 2 [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | 17,250 |  |  |  |  |  |  |  | 17,250 |  |  |  |  |  |  |  |  |  |
Long [Member] | Forward Contracts [Member] | EUR/USD [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | 271,964 |  |  |  |  |  |  |  | 271,964 |  |  |  |  |  |  |  |  |  |
Long [Member] | Forward Contracts [Member] | EUR/PLN [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | PLN |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | PLN 38,000 |  |  |
Long [Member] | Forward Contracts [Member] | EUR/JPN [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 709,859 |
Long [Member] | Forward Contracts [Member] | EUR/CNY [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | ¥ |  |  |  |  |  |  |  |  |  |  |  |  |  | ¥ 247,938 |  |  |  |  |
Long [Member] | Forward Contracts [Member] | EUR/AUD [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | AUD |  |  |  |  |  |  |  |  |  |  |  |  |  |  | AUD 13,950 |  |  |  |
Long [Member] | Forward Contracts [Member] | PLN/EUR [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | € |  |  |  |  |  |  |  |  |  |  |  | 3,820 |  |  |  |  |  |  |
Long [Member] | Forward Contracts [Member] | JPN/USD [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | $ 438 |  |  |  |  |  |  |  | $ 438 |  |  |  |  |  |  |  |  |  |
Long [Member] | Forward Contracts [Member] | GBPEUR [Member] | Not Designated as Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount | € |  |  |  |  |  |  |  |  |  |  |  | € 100 |  |  |  |  |  |  |

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- Definition Number of Months Cash Flow Hedge Gain Loss Reclassified Over + References No definition available. + Details
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 + Details
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- Definition Average contractual rate at which a foreign currency can be purchased or sold. + References No definition available. + Details
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