Derivative Instruments and Hedging Activities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 29, 2014	Dec. 31, 2013	Mar. 30, 2013
Derivative contracts
Assets	$ 388	$ 61	$ 58
Liabilities	(1,613)	(875)	(754)
Derivatives designated as hedging instruments:
Derivative contracts
Assets	382	41	4
Liabilities	(1,613)	(875)	(754)
Derivatives designated as hedging instruments: | Foreign currency forward contracts
Derivative contracts
Notional Amounts	44,665	34,244	14,449
Liabilities	(1,613)	(684)	(247)
Derivatives designated as hedging instruments: | Commodity futures contracts
Derivative contracts
Notional Amounts	5,154	5,601	6,454
Assets	382	41	4
Liabilities		(191)	(507)
Derivatives not designated as hedging instruments:
Derivative contracts
Assets	6	20	54
Derivatives not designated as hedging instruments: | Commodity futures contracts
Derivative contracts
Notional Amounts	195	321	481
Assets	$ 6	$ 20	$ 54