Goodwill and Intangible Assets Finite-Lived Intangible Assets by Major Class (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 31,469	$ 29,606
Finite-Lived Intangible Assets, Accumulated Amortization	(10,215)	(6,695)
Intangible Assets, Net (Excluding Goodwill)	21,254	22,911
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	6,455	4,631
Finite-Lived Intangible Assets, Accumulated Amortization	(1,704)	(1,445)
Intangible Assets, Net (Excluding Goodwill)	4,751	3,186
Distribution Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	2,426	2,426
Finite-Lived Intangible Assets, Accumulated Amortization	(900)	(641)
Intangible Assets, Net (Excluding Goodwill)	1,526	1,785
Licensing Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1,983	1,833
Finite-Lived Intangible Assets, Accumulated Amortization	(436)	(352)
Intangible Assets, Net (Excluding Goodwill)	1,547	1,481
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	5,746	5,761
Finite-Lived Intangible Assets, Accumulated Amortization	(1,014)	(636)
Intangible Assets, Net (Excluding Goodwill)	4,732	5,125
Acquired in-process research and development [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross		400
Finite-Lived Intangible Assets, Accumulated Amortization		0
Intangible Assets, Net (Excluding Goodwill)		400
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	315	315
Finite-Lived Intangible Assets, Accumulated Amortization	(108)	(67)
Intangible Assets, Net (Excluding Goodwill)	207	248
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	14,277	13,973
Finite-Lived Intangible Assets, Accumulated Amortization	(5,786)	(3,287)
Intangible Assets, Net (Excluding Goodwill)	8,491	10,686
Royalty Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	267	267
Finite-Lived Intangible Assets, Accumulated Amortization	(267)	(267)
Intangible Assets, Net (Excluding Goodwill)	$ 0	$ 0