Accumulated Other Comprehensive Earnings (Loss) - Reclassification from AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other income, net	$ (521)	$ (2,228)
Cost of goods sold	66,101	65,804
Total before tax	(10,363)	(14,154)
Tax (expense) benefit	2,262	4,143
Net earnings	(8,101)	(10,011)
Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total before tax	(44)	(1,487)
Tax (expense) benefit	10	538
Net earnings	(34)	(949)
Foreign Currency Derivatives | Foreign currency forward contracts | Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other income, net	(47)	25
Postretirement and Pension Benefits | Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other income, net	(331)	(365)
Product
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cost of goods sold	65,834	65,538
Product | Foreign Currency Derivatives | Commodity futures contracts | Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cost of goods sold	$ 334	$ (1,147)