Accumulated Other Comprehensive Earnings (Loss) (Reclassification from AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 27, 2014	Sep. 30, 2015	Sep. 27, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other income, net	$ 2,879	$ (166)	$ 1,085	$ (4,865)
Product cost of goods sold	117,046	123,164	252,924	256,211
Selling, marketing and administrative expenses	26,338	31,840	78,161	85,767
Tax (expense) benefit	12,008	10,316	20,077	21,958
Net earnings	(26,141)	(26,609)	(46,464)	(44,923)
Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total before tax	1,266	(43)	2,214	(435)
Tax (expense) benefit	(458)	15	(802)	157
Net earnings	808	(28)	1,412	(278)
AOCI from Derivatives | Foreign currency forward contracts | Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other income, net	712	173	1,733	624
AOCI from Derivatives | Commodity futures contracts | Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Product cost of goods sold	916	235	1,569	294
Postretirement and Pension Benefits | Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Product cost of goods sold	(177)	(221)	(533)	(663)
Selling, marketing and administrative expenses	$ (185)	$ (230)	$ (555)	$ (690)