Select Balance Sheet Details - Inventories, Net (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Balance Sheet Related Disclosures [Abstract]
Raw materials, Gross	$ 3,996	$ 4,375
Work-in-process, Gross	645	531
Finished goods, Gross	60,852	60,979
Inventory, Gross, Total	65,493	65,885
Finished goods, Reserve for excess and obsolete	(22,951)	(23,946)
Inventories, net, Reserve for excess and obsolete	(22,951)	(23,946)
Raw materials, Net	3,996	4,375
Work-in-process, Net	645	531
Finished goods, Net	37,901	37,033
Inventories, Net	$ 42,542	$ 41,939