Property, Plant and Equipment, Net - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 2,200	$ 2,000	$ 4,100	$ 7,700
Property, plant and equipment, net	84,422		84,422		$ 86,517
Fixed Assets Dedicated to R&D Activities [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 3,900		$ 3,900