Summary of Significant Accounting Policies (Details 1) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 179,689	$ 174,573
Accumulated Amortization	(65,334)	(61,789)
Intangible Assets, Net (Excluding Goodwill)	114,355	112,784
Tradename (indefinite life) [Member]
Intangible Assets [Line Items]
Gross amount, Tradename (indefinite life)	24,805	24,947
Intangible Assets, Net (Excluding Goodwill)	24,805	24,947
Customer Relationships [Member]
Intangible Assets [Line Items]
Gross amount	98,211	98,325
Accumulated Amortization	(29,836)	(28,159)
Intangible Assets, Net (Excluding Goodwill)	68,375	70,166
Proven technology and patents [Member]
Intangible Assets [Line Items]
Gross amount	50,349	45,588
Accumulated Amortization	(31,957)	(30,761)
Intangible Assets, Net (Excluding Goodwill)	18,392	14,827
Tradename (indefinite life) [Member]
Intangible Assets [Line Items]
Gross amount	4,215	4,140
Accumulated Amortization	(2,250)	(1,786)
Intangible Assets, Net (Excluding Goodwill)	1,965	2,354
Other Intangible Assets [Member]
Intangible Assets [Line Items]
Gross amount	2,109	1,573
Accumulated Amortization	(1,291)	(1,083)
Intangible Assets, Net (Excluding Goodwill)	$ 818	$ 490