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Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net Sales	$ 240,455	$ 216,766	$ 669,120	$ 639,226
Income from Operations	27,611	21,012	67,869	55,342
Goodwill	86,364		86,364		$ 74,825
Total Identifiable Assets	686,569		686,569		552,776
Industrial
Segment Reporting Information [Line Items]
Net Sales	132,388	121,205	375,546	361,629
Income from Operations	14,826	9,318	38,238	30,016
Goodwill	62,784		62,784		56,447
Total Identifiable Assets	382,138		382,138		339,064
Agricultural
Segment Reporting Information [Line Items]
Net Sales	64,923	56,443	170,921	156,950
Income from Operations	8,563	7,928	19,190	16,735
Goodwill	7,080		7,080		3,489
Total Identifiable Assets	142,201		142,201		111,120
European
Segment Reporting Information [Line Items]
Net Sales	43,144	39,118	122,653	120,647
Income from Operations	4,222	$ 3,766	10,441	$ 8,591
Goodwill	16,500		16,500		14,889
Total Identifiable Assets	$ 162,230		$ 162,230		$ 102,592

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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