Goodwill, In-Process Research and Development and Other Intangible Assets, Net - Summary of Other Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	$ 21,221	$ 20,735
Purchased intangible assets
Other intangible assets	21,221	20,735
Other intangible assets, net	17,785	17,807
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	5,796	5,310
Purchased intangible assets
Other intangible assets	5,796	5,310
Less: Accumulated amortization	(1,215)	(1,118)
Trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	3,700	3,700
Purchased intangible assets
Other intangible assets	3,700	3,700
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	1,800	1,800
Purchased intangible assets
Other intangible assets	1,800	1,800
Acquired Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Other intangible assets	9,925	9,925
Purchased intangible assets
Other intangible assets	9,925	9,925
Purchased Intangible Assets [Member]
Purchased intangible assets
Less: Accumulated amortization	$ (2,221)	$ (1,810)