Accumulated Other Comprehensive Earnings (Loss) - Reclassification from AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other income, net	$ (5,863)	$ (1,846)	$ (10,096)	$ (10,916)
Cost of goods sold	99,400	113,108	216,734	244,440
Total before tax	(31,392)	(37,884)	(56,862)	(65,227)
Tax expense (benefit)	6,729	8,038	12,841	14,926
Net of tax	(24,663)	(29,846)	(44,021)	(50,301)
Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total before tax	(328)	44	(581)	(459)
Tax expense (benefit)	80	(11)	141	111
Net of tax	(248)	33	(440)	(348)
Investments | Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other income, net		34		34
Foreign Currency Derivatives | Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other income, net	(82)	33	185	33
Commodity Derivatives | Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cost of goods sold	$ 92	$ 357	$ 247	$ 615
Type of Cost, Good or Service [Extensible List]	Product [Member]	Product [Member]	Product [Member]	Product [Member]
Postretirement and Pension Benefits | Reclassified from Accumulated OCI into Earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other income, net	$ (338)	$ (380)	$ (1,013)	$ (1,141)