Goodwill and Intangible Assets, Net (Details 1) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Schedule of components of intangible assets
Gross	$ 42,265	$ 44,079
Accumulated Amortization	(11,731)	(11,265)
Net	30,534	32,814
Distribution Rights [Member]
Schedule of components of intangible assets
Gross	369	372
Accumulated Amortization	(49)	(50)
Net	320	322
Patents [Member]
Schedule of components of intangible assets
Gross	7,982	9,488
Accumulated Amortization	(3,733)	(5,306)
Net	4,249	4,182
Trademarks and Trade Names [Member]
Schedule of components of intangible assets
Gross	2,841	2,837
Accumulated Amortization	(1,056)	(821)
Net	1,785	2,016
Developed and Core Technology [Member]
Schedule of components of intangible assets
Gross	3,506	3,500
Accumulated Amortization	(847)	(671)
Net	2,659	2,829
Capitalized Software Development Costs [Member]
Schedule of components of intangible assets
Gross	1,161	1,515
Accumulated Amortization	(830)	(1,108)
Net	331	407
Customer Relationships [Member]
Schedule of components of intangible assets
Gross	26,406	26,367
Accumulated Amortization	(5,216)	(3,309)
Net	$ 21,190	$ 23,058