Inventories, Net and Significant Suppliers (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
Raw materials	$ 22,571	$ 18,990
Components	13,928	18,623
Work in process	3,485	2,017
Finished goods	54,622	59,393
Reserve for excess and obsolete inventory	(2,265)	(2,714)	(1,994)	(2,024)
Inventories, net	$ 92,341	$ 96,309