Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]
Net Revenue	$ 206,353	$ 178,064	$ 377,603	$ 336,493
Operating Income	14,796	17,561	25,427	27,300
Goodwill	73,594	30,923	73,594	30,923	32,073
Total Identifiable Assets	682,162	425,170	682,162	425,170	438,476
Industrial
Segment Reporting Information [Line Items]
Net Revenue	105,082	77,639	182,396	146,973
Operating Income	10,128	8,344	16,428	13,541
Goodwill	52,543	13,210	52,543	13,210
Total Identifiable Assets	374,795	155,314	374,795	155,314
Agricultural
Segment Reporting Information [Line Items]
Net Revenue	52,631	57,255	102,476	106,891
Operating Income	2,375	7,375	4,790	10,011
Goodwill	802	0	802	0
Total Identifiable Assets	142,344	138,501	142,344	138,501
European
Segment Reporting Information [Line Items]
Net Revenue	48,640	43,170	92,731	82,629
Operating Income	2,293	1,842	4,209	3,748
Goodwill	20,249	17,713	20,249	17,713
Total Identifiable Assets	$ 165,023	$ 131,355	$ 165,023	$ 131,355