Accumulated Other Comprehensive Earnings (Loss) - Reclassification from AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other income, net	$ (1,943)	$ 2,879	$ (4,147)	$ 1,085
Product cost of goods sold	114,748	117,046	245,581	252,924
Selling, marketing and administrative expenses	32,101	26,338	81,772	78,161
Total before tax	(41,216)	(38,149)	(71,933)	(66,541)
Tax (expense) benefit	12,619	12,008	22,406	20,077
Net earnings	(28,597)	(26,141)	(49,527)	(46,464)
Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total before tax	(748)	1,266	(582)	2,214
Tax (expense) benefit	271	(458)	212	(802)
Net earnings	(477)	808	(370)	1,412
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	456	712	1,482	1,733
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	(793)	916	(836)	1,569
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	(202)	(177)	(604)	(533)
Selling, marketing and administrative expenses	$ (209)	$ (185)	$ (628)	$ (555)