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Acquisitions Proforma Results (Details) - Futura Industries [Member] - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items]
Sales Revenue, Goods, Net	$ 247,121,000	$ 228,176,000	$ 722,505,000	$ 681,686,000
Business Acquisition, Pro Forma Net Income (Loss)	$ 8,274,000	$ 13,225,000	$ 55,835,000	$ 25,559,000
Business Acquisition, Pro Forma Earnings Per Share, Basic	$ 0.25	$ 0.40	$ 1.69	$ 0.78
Business Acquisition, Pro Forma Earnings Per Share, Diluted	$ 0.25	$ 0.40	$ 1.69	$ 0.78

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Schedule Of Acquired Finite And Indefinite Lived Intangible Asset By Major Class [Line Items]

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)-(3)
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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
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