Segment Information - Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Geographic Information For Property Plant And Equipment [Line Items]
Total property, plant and equipment, net	$ 143,217	$ 124,800
United States
Geographic Information For Property Plant And Equipment [Line Items]
Total property, plant and equipment, net	135,440	117,715
Other Americas
Geographic Information For Property Plant And Equipment [Line Items]
Total property, plant and equipment, net	620	218
Europe, Middle East and Africa
Geographic Information For Property Plant And Equipment [Line Items]
Total property, plant and equipment, net	3,875	3,822
Asia Pacific
Geographic Information For Property Plant And Equipment [Line Items]
Total property, plant and equipment, net	$ 3,282	$ 3,045