PROPERTY AND EQUIPMENT (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 158,968	$ 152,768
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	123,782	111,327
Property, plant and equipment, net	35,186	41,441
Computer and Video Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	107,464	103,209
Manufacturing Tooling and Testbeds [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,548	1,611
Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	4,737	4,746
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	10,909	11,122
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 33,310	$ 32,080