Derivative Instruments and Hedging Activities (Details) (USD $) In Thousands	Jul. 02, 2011	Dec. 31, 2010	Jul. 03, 2010
Derivative contracts
Assets	$ 1,549	$ 8,733	$ 1,952
Liabilities	(43)	(112)	(2,743)
Foreign currency forward contracts | Derivatives designated as hedging instruments:
Derivative contracts
Notional Amounts	1,192	3,572	7,520
Assets	368	942	1,371
Commodity futures contracts | Derivatives designated as hedging instruments:
Derivative contracts
Notional Amounts	7,773	4,407	5,033
Assets	615	2,310
Liabilities	(42)		(823)
Commodity option contracts | Derivatives designated as hedging instruments:
Derivative contracts
Notional Amounts	1,160	10,344	11,607
Assets	566	5,481	581
Liabilities	(1)	(112)	(1,680)
Derivatives designated as hedging instruments:
Derivative contracts
Assets	1,549	8,733	1,952
Liabilities	(43)	(112)	(2,503)
Commodity option contracts | Derivatives not designated as hedging instruments:
Derivative contracts
Notional Amounts	370		3,313
Liabilities			(240)
Derivatives not designated as hedging instruments:
Derivative contracts
Liabilities			$ (210)