Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Net Sales	$ 210,971	$ 207,798
Income from Operations	16,289	12,128
Goodwill	76,397		$ 75,509
Total Identifiable Assets	646,352		603,503
Industrial
Segment Reporting Information [Line Items]
Net Sales	123,278	116,912
Income from Operations	11,527	9,337
Goodwill	56,626		56,293
Total Identifiable Assets	358,574		370,642
Agricultural
Segment Reporting Information [Line Items]
Net Sales	48,662	48,457
Income from Operations	2,759	792
Goodwill	3,258		2,984
Total Identifiable Assets	132,114		110,489
European
Segment Reporting Information [Line Items]
Net Sales	39,031	42,429
Income from Operations	2,003	$ 1,999
Goodwill	16,513		16,232
Total Identifiable Assets	$ 155,664		$ 122,372