Goodwill and Other Intangible Assets (Detail 1) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Amortized intangible assets
Amortized intangible assets, gross carrying amount	$ 11,999	$ 12,523
Amortized intangible assets, accumulated amortization	(4,747)	(4,682)
Licensing Agreements [Member]
Amortized intangible assets
Amortized intangible assets, gross carrying amount	782	818
Amortized intangible assets, accumulated amortization	(782)	(818)
Technology [Member]
Amortized intangible assets
Amortized intangible assets, gross carrying amount	2,500	2,500
Amortized intangible assets, accumulated amortization	(226)	(143)
Customer Relationships [Member]
Amortized intangible assets
Amortized intangible assets, gross carrying amount	2,483	2,477
Amortized intangible assets, accumulated amortization	(309)	(195)
Patents [Member]
Amortized intangible assets
Amortized intangible assets, gross carrying amount	5,611	6,037
Amortized intangible assets, accumulated amortization	(3,197)	(3,274)
Other [Member]
Amortized intangible assets
Amortized intangible assets, gross carrying amount	623	691
Amortized intangible assets, accumulated amortization	$ (233)	$ (252)