Goodwill and Other Intangible Assets Details 1 (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Finite Life and Indefinite Life Intangible Assets
Intangible Assets, Net (Excluding Goodwill)	$ 226,718	$ 167,055
Intangible Assets Excluding Goodwill Gross	312,408	241,185
Intangible Assets Accumulated Amortization	(85,690)	(74,130)
Customer Relationships [Member]
Finite Life and Indefinite Life Intangible Assets
Finite-Lived Intangible Assets, Gross	198,527	147,466
Finite-Lived Intangible Assets, Accumulated Amortization	(41,794)	(34,672)
Intangible Assets, Net (Excluding Goodwill)	156,733	112,794
Proven technology and patents
Finite Life and Indefinite Life Intangible Assets
Finite-Lived Intangible Assets, Gross	70,311	58,394
Finite-Lived Intangible Assets, Accumulated Amortization	(38,890)	(35,128)
Intangible Assets, Net (Excluding Goodwill)	31,421	23,266
Tradename (Finite Life)
Finite Life and Indefinite Life Intangible Assets
Finite-Lived Intangible Assets, Gross	4,518	4,182
Finite-Lived Intangible Assets, Accumulated Amortization	(2,807)	(2,514)
Intangible Assets, Net (Excluding Goodwill)	1,711	1,668
Tradename (Indefinite Life)
Finite Life and Indefinite Life Intangible Assets
Intangible Assets, Net (Excluding Goodwill)	35,562	28,272
Indefinite-Lived Intangible Assets (Excluding Goodwill)	35,562	28,272
Other Intangible Assets [Member]
Finite Life and Indefinite Life Intangible Assets
Finite-Lived Intangible Assets, Gross	3,490	2,871
Finite-Lived Intangible Assets, Accumulated Amortization	(2,199)	(1,816)
Intangible Assets, Net (Excluding Goodwill)	$ 1,291	$ 1,055

The total accumulated amount of amortization of intangible assets.

No definition available.

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- Definition

Sum of the gross carrying amount before accumulated amortization of finite-lived intangibles and the carrying amounts (original costs for current and prior period additions adjusted for impairment if any) of indefinite-lived intangibles as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

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.

+ References

No definition available.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph ((a)(1),(b))
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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