Revenue and Segment Information - Revenue, Income, Goodwill and Identifiable Assets by Location (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net Sales	$ 314,448	$ 261,934
Income from Operations	23,856	22,606
Goodwill	195,561		$ 198,022
Total Identifiable Assets	1,249,876		1,212,763
Industrial
Segment Reporting Information [Line Items]
Net Sales	229,975	173,530
Income from Operations	18,123	16,947
Goodwill	182,739		183,307
Total Identifiable Assets	985,099		922,738
Agricultural
Segment Reporting Information [Line Items]
Net Sales	84,473	88,404
Income from Operations	5,733	$ 5,659
Goodwill	12,822		14,715
Total Identifiable Assets	$ 264,777		$ 290,025