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Summary of Significant Accounting Policies (Details 1) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 243,991	$ 241,185
Accumulated Amortization	(79,857)	(74,130)
Intangible Assets, Net (Excluding Goodwill)	164,134	167,055
Tradename (indefinite life) [Member]
Intangible Assets [Line Items]
Gross amount, Tradename (indefinite life)	28,369	28,272
Intangible Assets, Net (Excluding Goodwill)	28,369	28,272
Customer Relationships [Member]
Intangible Assets [Line Items]
Gross amount	148,275	147,466
Accumulated Amortization	(37,831)	(34,672)
Intangible Assets, Net (Excluding Goodwill)	110,444	112,794
Proven technology and patents [Member]
Intangible Assets [Line Items]
Gross amount	59,884	58,394
Accumulated Amortization	(37,365)	(35,128)
Intangible Assets, Net (Excluding Goodwill)	22,519	23,266
Tradename (indefinite life) [Member]
Intangible Assets [Line Items]
Gross amount	4,421	4,182
Accumulated Amortization	(2,725)	(2,514)
Intangible Assets, Net (Excluding Goodwill)	1,696	1,668
Other Intangible Assets [Member]
Intangible Assets [Line Items]
Gross amount	3,042	2,871
Accumulated Amortization	(1,936)	(1,816)
Intangible Assets, Net (Excluding Goodwill)	$ 1,106	$ 1,055

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
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