Inventories, Net and Significant Suppliers - Inventories, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Inventory Disclosure [Abstract]
Raw materials	$ 33,059	$ 29,290
Components	15,046	12,228
Work in process	5,860	5,671
Finished goods	80,119	78,222
Reserve for excess and obsolete inventory	(4,205)	(3,045)	$ (2,539)	$ (2,714)
Inventories, net	$ 129,879	$ 122,366