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Derivative Instruments and Hedging Activities Part 2 (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Feb. 20, 2013 | Dec. 31, 2016 | Dec. 26, 2015
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Restricted cash in other current assets as collateral related to open derivative contracts |  | $ 1,400 | $ 2,600
Cash Flow Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
(Loss) Gain Recognized in AOCI (Effective Portion), Net of Tax |  | 400 | (4,604)
(Gain) Loss Reclassified from AOCI (Effective Portion), Net of Tax |  | 1,309 | 3,548
Commodity Contracts [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Deferred net gains (losses), net of tax, included in AOCI |  | 300 |
Commodity Contracts [Member] | Not Designated as Hedging Instrument [Member] | Cost of Goods Sold [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain on commodity contracts (non-qualifying) |  | 4,068 | 3,474
Commodity Contracts [Member] | Cash Flow Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
(Loss) Gain Recognized in AOCI (Effective Portion), Net of Tax |  | 308 | (3,817)
Commodity Contracts [Member] | Cash Flow Hedging [Member] | Cost of Goods Sold [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
(Gain) Loss Reclassified from AOCI (Effective Portion), Net of Tax |  | 1,078 | 3,310
Commodity Contracts [Member] | Fair Value Hedging [Member] | Cost of Goods Sold [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (loss) on the derivatives in designated and qualifying fair value hedges |  | (420) | 3,374
Inventory [Member] | Fair Value Hedging [Member] | Cost of Goods Sold [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Gain (loss) on the derivatives in designated and qualifying fair value hedges |  | $ 382 | (3,665)
Interest Rate Swap [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Period of interest rate swap | 2 years |  |
Notional amount | $ 200,000 |  |
Interest rate swap, fixed interest rate | 1.40% |  |
Revolving credit facility, all-in fixed interest rate | 2.49% |  |
Interest rate swap maturity date |  | Dec. 11, 2017 |
Deferred net gains (losses), net of tax, included in AOCI |  | $ (600) |
Interest Rate Swap [Member] | Cash Flow Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
(Loss) Gain Recognized in AOCI (Effective Portion), Net of Tax |  | 305 | (727)
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Interest Expense [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
(Gain) Loss Reclassified from AOCI (Effective Portion), Net of Tax |  | 231 | 238
Other [Member] | Cash Flow Hedging [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
(Loss) Gain Recognized in AOCI (Effective Portion), Net of Tax |  | (213) | (60)
Other [Member] | Cash Flow Hedging [Member] | Other [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
(Gain) Loss Reclassified from AOCI (Effective Portion), Net of Tax |  | $ 0 | $ 0

X
- 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 Accumulated change, net of tax, in accumulated gains and losses from derivative instruments. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses. + References No definition available. + Details
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- Definition Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 + Details
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- Definition Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41678-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226016-175313 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + 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 (c) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624177-113959 + Details
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- Definition The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. + 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=64837297&loc=SL5624171-113959 + Details
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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + 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 (e) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 + Details
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- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition Maximum period the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (d) -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 + Details
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