Accumulated Other Comprehensive Earnings (Loss) - Reclassification from AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other income, net	$ (2,239)	$ (1,321)	$ (2,204)	$ (1,794)
Product cost of goods sold	65,009	68,733	130,833	135,878
Selling, marketing and administrative expenses	25,618	25,839	49,671	51,823
Total before tax	(16,536)	(14,955)	(30,717)	(28,392)
Tax (expense) benefit	5,462	3,735	9,787	8,069
Net earnings	(11,074)	(11,220)	(20,930)	(20,323)
Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total before tax	(40)	636	166	948
Tax (expense) benefit	15	(230)	(59)	(344)
Net earnings	(25)	406	107	604
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	420	508	1,026	1,021
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	(50)	491	(43)	653
Investments | Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other income, net			4
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	(201)	(178)	(402)	(356)
Selling, marketing and administrative expenses	$ (209)	$ (185)	$ (419)	$ (370)