Summary of Significant Accounting Policies (Details 1) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 184,607	$ 182,238
Accumulated Amortization	(70,605)	(66,986)
Intangible Assets, Net (Excluding Goodwill)	114,002	115,252
Tradename (indefinite life) [Member]
Intangible Assets [Line Items]
Gross amount, Tradename (indefinite life)	24,788	24,814
Intangible Assets, Net (Excluding Goodwill)	24,788	24,814
Customer Relationships [Member]
Intangible Assets [Line Items]
Gross amount	98,867	98,175
Accumulated Amortization	(32,577)	(30,836)
Intangible Assets, Net (Excluding Goodwill)	66,290	67,339
Proven technology and patents [Member]
Intangible Assets [Line Items]
Gross amount	54,520	52,938
Accumulated Amortization	(34,060)	(32,444)
Intangible Assets, Net (Excluding Goodwill)	20,460	20,494
Tradename (indefinite life) [Member]
Intangible Assets [Line Items]
Gross amount	4,289	4,200
Accumulated Amortization	(2,212)	(2,158)
Intangible Assets, Net (Excluding Goodwill)	2,077	2,042
Other Intangible Assets [Member]
Intangible Assets [Line Items]
Gross amount	2,143	2,111
Accumulated Amortization	(1,756)	(1,548)
Intangible Assets, Net (Excluding Goodwill)	$ 387	$ 563