Summary of Significant Accounting Policies (Details 1) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Intangible Assets [Line Items]
Finite and Indefinite-Lived Intangible Assets, Gross, Total	$ 242,352	$ 241,185
Total Accumulated Amortization	(76,876)	(74,130)
Intangible Assets, Net (Excluding Goodwill)	165,476	167,055
Tradename (indefinite life) [Member]
Intangible Assets [Line Items]
Gross amount, Tradename (indefinite life)	28,339	28,272
Intangible Assets, Net (Excluding Goodwill)	28,339	28,272
Customer Relationships [Member]
Intangible Assets [Line Items]
Gross amount	147,776	147,466
Accumulated Amortization	(36,190)	(34,672)
Intangible Assets, Net (Excluding Goodwill)	111,586	112,794
Proven technology and patents [Member]
Intangible Assets [Line Items]
Gross amount	59,057	58,394
Accumulated Amortization	(35,981)	(35,128)
Intangible Assets, Net (Excluding Goodwill)	23,076	23,266
Tradename (indefinite life) [Member]
Intangible Assets [Line Items]
Gross amount	4,296	4,182
Accumulated Amortization	(2,738)	(2,514)
Intangible Assets, Net (Excluding Goodwill)	1,558	1,668
Other Intangible Assets [Member]
Intangible Assets [Line Items]
Gross amount	2,884	2,871
Accumulated Amortization	(1,967)	(1,816)
Intangible Assets, Net (Excluding Goodwill)	$ 917	$ 1,055