Accumulated Other Comprehensive Earnings (Loss) (Reclassification from AOCI) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 28, 2014	Jun. 30, 2015	Jun. 28, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other income, net	$ (1,321)	$ (3,033)	$ (1,794)	$ (4,699)
Product cost of goods sold	68,733	66,182	135,878	133,047
Selling, marketing and administrative expenses	25,839	28,296	51,823	53,927
Tax (expense) benefit	3,735	4,305	8,069	11,642
Net earnings	(11,220)	(8,957)	(20,323)	(18,314)
Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total before tax	636	(378)	948	(392)
Tax (expense) benefit	(230)	137	(344)	142
Net earnings	406	(241)	604	(250)
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	508	189	1,021	451
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	491	(116)	653	59
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	(178)	(221)	(356)	(442)
Selling, marketing and administrative expenses	$ (185)	$ (230)	$ (370)	$ (460)