BALANCE SHEET DETAILS - Components of Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	$ 70,863	$ 71,873
Less: accumulated depreciation	(61,647)	(64,486)
Property and equipment, net	9,216	7,387
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	42,329	43,853
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	9,908	9,985
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property, and equipment, gross	$ 18,626	$ 18,035