Goodwill and Other Intangible Assets (Detail 1) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Amortized intangible assets
Finite-Lived Intangible Assets, Gross	$ 13,509	$ 7,925
Finite-Lived Intangible Assets, Accumulated Amortization	(4,748)	(4,415)
Licensing Agreements [Member]
Amortized intangible assets
Finite-Lived Intangible Assets, Gross	879	881
Finite-Lived Intangible Assets, Accumulated Amortization	(879)	(881)
Technology [Member]
Amortized intangible assets
Finite-Lived Intangible Assets, Gross	2,500	0
Finite-Lived Intangible Assets, Accumulated Amortization	(60)	0
Customer Relationships [Member]
Amortized intangible assets
Finite-Lived Intangible Assets, Gross	2,553	0
Finite-Lived Intangible Assets, Accumulated Amortization	(85)	0
Patents [Member]
Amortized intangible assets
Finite-Lived Intangible Assets, Gross	6,747	6,766
Finite-Lived Intangible Assets, Accumulated Amortization	(3,470)	(3,307)
Other Intangible Assets [Member]
Amortized intangible assets
Finite-Lived Intangible Assets, Gross	830	278
Finite-Lived Intangible Assets, Accumulated Amortization	$ (254)	$ (227)