Inventories, Net and Significant Suppliers (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Inventory Disclosure [Abstract]
Raw materials	$ 19,235	$ 18,990
Components	14,742	18,623
Work in process	3,874	2,017
Finished goods	53,015	59,393
Reserve for excess and obsolete inventory	(2,090)	(2,714)	(1,922)	(2,024)
Inventories, net	$ 88,776	$ 96,309