Property, Plant and Equipment, Net - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Property, Plant and Equipment, Net
Property, plant and equipment, net	$ 276,936		$ 276,936		$ 238,404
Depreciation expense	5,800	$ 5,000	11,200	$ 11,000
India and Switzerland
Property, Plant and Equipment, Net
Property, plant and equipment, net	$ 72,700		$ 72,700		$ 65,100