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Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net Sales	$ 213,276	$ 211,489	$ 428,665	$ 422,460
Income from Operations	20,157	18,041	40,258	34,330
Goodwill	82,430		82,430		$ 74,825
Total Identifiable Assets	680,864		680,864		552,776
Industrial
Segment Reporting Information [Line Items]
Net Sales	117,342	117,146	243,158	240,424
Income from Operations	10,949	9,171	23,412	20,698
Goodwill	59,643		59,643		56,447
Total Identifiable Assets	371,769		371,769		339,064
Agricultural
Segment Reporting Information [Line Items]
Net Sales	54,221	51,845	105,998	100,507
Income from Operations	5,811	6,048	10,627	8,807
Goodwill	6,786		6,786		3,489
Total Identifiable Assets	153,889		153,889		111,120
European
Segment Reporting Information [Line Items]
Net Sales	41,713	42,498	79,509	81,529
Income from Operations	3,397	$ 2,822	6,219	$ 4,825
Goodwill	16,001		16,001		14,889
Total Identifiable Assets	$ 155,206		$ 155,206		$ 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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-Section S99
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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

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-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
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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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