Property, Plant and Equipment, Net - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Property Plant and Equipment [Line Items]
Depreciation expense	$ 2,700	$ 2,400
Property, plant and equipment, gross	157,332		$ 156,378
Construction in Progress [Member]
Property Plant and Equipment [Line Items]
Property, plant and equipment, gross	11,216		11,139
Statesboro, Georgia [Member] | Construction in Progress [Member]
Property Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 7,200		$ 7,200