Goodwill and Other Intangible Assets (Detail 1) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Amortized intangible assets
Finite-Lived Intangible Assets, Gross	$ 12,944	$ 7,925
Finite-Lived Intangible Assets, Accumulated Amortization	(4,731)	(4,415)
Licensing Agreements [Member]
Amortized intangible assets
Finite-Lived Intangible Assets, Gross	838	881
Finite-Lived Intangible Assets, Accumulated Amortization	(838)	(881)
Technology [Member]
Amortized intangible assets
Finite-Lived Intangible Assets, Gross	2,500	0
Finite-Lived Intangible Assets, Accumulated Amortization	(101)	0
Customer Relationships [Member]
Amortized intangible assets
Finite-Lived Intangible Assets, Gross	2,513	0
Finite-Lived Intangible Assets, Accumulated Amortization	(134)	0
Patents [Member]
Amortized intangible assets
Finite-Lived Intangible Assets, Gross	6,275	6,766
Finite-Lived Intangible Assets, Accumulated Amortization	(3,318)	(3,307)
Other Intangible Assets [Member]
Amortized intangible assets
Finite-Lived Intangible Assets, Gross	818	278
Finite-Lived Intangible Assets, Accumulated Amortization	$ (340)	$ (227)