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

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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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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Nominal or face amount used to calculate payments on the derivative liability.

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Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Maximum period of time the entity is hedging its exposure to variability in future cash flows for forecasted transactions, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes forecasted transactions related to payment of variable interest on existing financial instruments.

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Financial Instruments (Details) - USD ($)	6 Months Ended
Financial Instruments (Details) - USD ($)	Jun. 25, 2017	Jun. 26, 2016	Dec. 25, 2016
Derivatives, Fair Value [Line Items]
Maximum length of time, foreign currency cash flow hedge	42 months
Gain (loss) on foreign currency derivative instruments not desinated as hedging instruments	$ (1,500,000)	$ (100,000)
Derivative Liability, Notional Amount			$ (160,461,000)
Derivative, Notional Amount	195,377,000
Derivative, Fair Value, Net	3,629,000		(24,760,000)
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	(27,627,000)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(3,582,000)
Gain (Loss) on Derivative Instruments, Net, Pretax	(1,451,000)
Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	5,134,000
Other Non-current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	5,125,000
Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	3,848,000
Other Non-current Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	2,782,000
Designated as Hedging Instrument [Member] \| Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset			13,000
Designated as Hedging Instrument [Member] \| Other Non-current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset			0
Designated as Hedging Instrument [Member] \| Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability			10,076,000
Designated as Hedging Instrument [Member] \| Other Non-current Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability			14,697,000
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net			0
Not Designated as Hedging Instrument [Member] \| Other Non-current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	0
Not Designated as Hedging Instrument [Member] \| Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	0
Not Designated as Hedging Instrument [Member] \| Other Non-current Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	459,000
Foreign exchange forward contracts and collars designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	(27,627,000)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	(3,582,000)
Gain (Loss) on Derivative Instruments, Net, Pretax	(1,451,000)
Foreign exchange forward contracts and collars designated as hedging instruments \| Designated as Hedging Instrument [Member] \| Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	4,596,000		13,000
Foreign exchange forward contracts and collars designated as hedging instruments \| Designated as Hedging Instrument [Member] \| Other Non-current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	5,125,000		0
Foreign exchange forward contracts and collars designated as hedging instruments \| Designated as Hedging Instrument [Member] \| Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	3,032,000		10,076,000
Foreign exchange forward contracts and collars designated as hedging instruments \| Designated as Hedging Instrument [Member] \| Other Non-current Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	1,938,000		14,697,000
Foreign Exchange Option [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount			(160,461,000)
Derivative Asset, Notional Amount	248,430,700
Derivative, Fair Value, Net	4,751,000		(24,760,000)
Aluminum forward contracts not designated as hedges \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	(6,558,484)
Derivative, Fair Value, Net	(737,000)		0
Aluminum forward contracts not designated as hedges \| Not Designated as Hedging Instrument [Member] \| Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	79,000
Aluminum forward contracts not designated as hedges \| Not Designated as Hedging Instrument [Member] \| Other Non-current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	0
Aluminum forward contracts not designated as hedges \| Not Designated as Hedging Instrument [Member] \| Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	816,000
Aluminum forward contracts not designated as hedges \| Not Designated as Hedging Instrument [Member] \| Other Non-current Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	0
Interest rate swap contracts not designated as hedges \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	(46,496,070)
Derivative, Fair Value, Net	(385,000)		$ 0
Interest rate swap contracts not designated as hedges \| Not Designated as Hedging Instrument [Member] \| Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	0
Interest rate swap contracts not designated as hedges \| Not Designated as Hedging Instrument [Member] \| Other Non-current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	0
Interest rate swap contracts not designated as hedges \| Not Designated as Hedging Instrument [Member] \| Accrued Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	0
Interest rate swap contracts not designated as hedges \| Not Designated as Hedging Instrument [Member] \| Other Non-current Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	385,000
Cross currency swap not designated as hedging instrument \| Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net	0
Cross currency swap not designated as hedging instrument \| Not Designated as Hedging Instrument [Member] \| Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 459,000
Minimum [Member]
Derivatives, Fair Value [Line Items]
Derivative, Remaining Maturity	1 month
Maximum [Member]
Derivatives, Fair Value [Line Items]
Derivative, Remaining Maturity	42 months
Estimate of Fair Value Measurement [Member]
Derivatives, Fair Value [Line Items]
Long-term debt fair value	$ 762,020,000
Reported Value Measurement [Member]
Derivatives, Fair Value [Line Items]
Long-term debt fair value	$ 764,931,000