Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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

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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

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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

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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)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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-Publisher FASB
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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

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Stated rate on an interest rate forward or futures contract.

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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.

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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
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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.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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Date the derivative contract matures, in CCYY-MM-DD format.

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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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (d)
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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