Derivative Instruments and Hedging Activities Part 2 (Details) $ in Thousands, € in Millions		3 Months Ended		6 Months Ended
	Feb. 20, 2013 USD ($)	Jun. 27, 2015 USD ($)	Jun. 28, 2014 USD ($)	Jun. 27, 2015 USD ($)	Jun. 28, 2014 USD ($)	Jun. 27, 2015 EUR (€)	Dec. 27, 2014 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Restricted cash in other current assets as collateral related to open derivative contracts		$ 1,500		$ 1,500			$ 500
Commodity Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Deferred net gains (losses), net of tax, included in AOCI		(919)		(919)
Commodity Contracts [Member] | Not Designated as Hedging Instrument [Member] | Cost of Goods Sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on undesignated derivatives		1,046	$ (72)	1,279	$ 1,466
Commodity Contracts [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCI (Effective Portion), Net of Tax		(1,159)	578	(885)	(432)
Commodity Contracts [Member] | Cash Flow Hedging [Member] | Cost of Goods Sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Loss (Gain) Reclassified from AOCI (Effective Portion), Net of Tax		(81)	168	490	459
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		1,256	(20)	$ 1,468	6,271
Foreign Currency Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount | €						€ 3.4
Time period for open forward contracts to purchase				5 months
Deferred net gains (losses), net of tax, included in AOCI		104		$ 104
Foreign Currency Contracts [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCI (Effective Portion), Net of Tax		3	(25)	(52)	(3)
Foreign Currency Contracts [Member] | Cash Flow Hedging [Member] | Depreciation Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Loss (Gain) Reclassified from AOCI (Effective Portion), Net of Tax		0	(63)	0	(237)
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		(1,403)	20	$ (1,650)	(5,780)
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Notional amount	$ 200,000
Period of interest rate swap	2 years
Interest rate swap, fixed interest rate (in hundredths)	1.40%
Term loan facility, all-in fixed interest rate (in hundredths)	2.70%
Interest rate swap maturity date				Dec. 11, 2017
Deferred net gains (losses), net of tax, included in AOCI		(1,200)		$ (1,200)
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCI (Effective Portion), Net of Tax		267	(1,022)	(765)	(1,267)
Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Loss (Gain) Reclassified from AOCI (Effective Portion), Net of Tax		$ 63	$ 0	131	$ 0
Other [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in AOCI (Effective Portion), Net of Tax				(19)
Loss (Gain) Reclassified from AOCI (Effective Portion), Net of Tax				$ 0