Property, Plant & Equipment, Net - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Property, Plant & Equipment [Line Items]
Property, plant and equipment, net	$ 92,086		$ 94,187
Property, Plant and Equipment [Member]
Property, Plant & Equipment [Line Items]
Depreciation and amortization	5,100	$ 2,600
Property, Plant and Equipment Dedicated to R&D Activities [Member]
Property, Plant & Equipment [Line Items]
Property, plant and equipment, net	$ 2,700