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Derivative Financial Instruments - Additional Information (Detail) (USD $) | 12 Months Ended | 0 Months Ended
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Jan. 03, 2015 | Dec. 28, 2013 | Dec. 29, 2012 | Mar. 28, 2012
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Commodity derivatives fair value, net | $ (16,300,000)us-gaap_PriceRiskCashFlowHedgeDerivativeAtFairValueNet | $ (11,500,000)us-gaap_PriceRiskCashFlowHedgeDerivativeAtFairValueNet |  |
Cash settlement on hedge | 3,100,000 us-gaap_UnrealizedGainLossOnInterestRateCashFlowHedgesPretaxAccumulatedOtherComprehensiveIncomeLoss |  |  |
Interest expense | 28,288,000 us-gaap_InterestExpense | 28,875,000 us-gaap_InterestExpense | 23,411,000 us-gaap_InterestExpense |
4.375% Senior Notes |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Notes bearing interest rate | 4.375%us-gaap_LongTermDebtPercentageBearingFixedInterestRate / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember |  |  | 4.375%us-gaap_LongTermDebtPercentageBearingFixedInterestRate / us-gaap_LongtermDebtTypeAxis = us-gaap_SeniorNotesMember
Debt instrument term |  |  |  | 10 years
Other Current Assets |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Derivative instrument, asset | 16,100,000 us-gaap_DerivativeAssetNotionalAmount / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | 16,900,000 us-gaap_DerivativeAssetNotionalAmount / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember |  |
Interest rate risk derivatives |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Interest expense | $ 300,000 us-gaap_InterestExpense / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember | $ 800,000 us-gaap_InterestExpense / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember | $ 2,800,000 us-gaap_InterestExpense / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember |

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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Nominal or face amount used to calculate payments on the derivative asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 + Details
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- Details
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- Definition Amount of the cost of borrowed funds accounted for as interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.9) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 9 -Article 9 + Details
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- Definition The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Fair value as of the balance sheet date of all price risk derivatives designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
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- Definition Amount of unrealized gain (loss) related to the increase or decrease in fair value of interest rate derivatives designated as cash flow hedging instruments, which was recorded in accumulated other comprehensive income to the extent that the cash flow hedge was determined to be effective. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
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