Derivative Instruments and Hedging Activities (Details) (USD $) In Thousands, unless otherwise specified	Jun. 28, 2014	Dec. 31, 2013	Jun. 29, 2013
Derivative contracts
Assets	$ 726	$ 61	$ 25
Liabilities	(495)	(875)	(1,007)
Designated as Hedging Instrument [Member]
Derivative contracts
Assets	726	41
Liabilities	(495)	(875)	(1,005)
Designated as Hedging Instrument [Member] | Foreign Exchange Forward [Member]
Derivative contracts
Notional Amounts	38,978	34,244	23,383
Assets	534
Liabilities	(453)	(684)	(759)
Designated as Hedging Instrument [Member] | Commodity Futures [Member]
Derivative contracts
Notional Amounts	5,563	5,601	1,600
Assets	192	41
Liabilities	(42)	(191)	(246)
Not Designated as Hedging Instrument [Member]
Derivative contracts
Assets		20	25
Liabilities			(2)
Not Designated as Hedging Instrument [Member] | Commodity Futures [Member]
Derivative contracts
Notional Amounts		321	1,272
Assets		20	25
Liabilities			$ (2)