Commitments and Contingencies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) $ / ft²	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($) People	Sep. 26, 2011 USD ($)
Leases [Abstract]
Expiration of non-cancellable operating leases	Through 2022
Accrued lease commitments expense	$ 4.8
Estimated sublease income	2.5
Rent expense under operating leases	$ 1.3	$ 1.2	$ 2.4
Incentives per square feet | $ / ft²	40.00
Incentives for improvements to space	$ 2.2
Amount received to start-up new facility				$ 1.0
Minimum number of people to be employed | People			232
Time period to meet employment commitment			3 years
New deadline to meet employment commitment	Apr. 30, 2016