SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting, Revenue Reconciling Item [Line Items]
Product Revenues	$ 99,858	$ 124,991	$ 198,576	$ 252,697
Services revenues	41,487		78,840
Total net revenues	141,345	165,476	277,416	324,627
Revenues	141,345	165,476	277,416	324,627
Video Products [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Product Revenues	58,062	72,969	116,886	141,562
Audio Products [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Product Revenues	41,796	52,022	81,690	111,135
Americas [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues	56,110	63,271	106,925	126,405
Revenues	56,110	63,271	106,925	126,405
Other Americas [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues	11,733	11,743	24,836	25,099
Revenues	11,733	11,743	24,836	25,099
Europe, Middle East and Africa [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues	52,230	65,657	103,501	124,382
Revenues	52,230	65,657	103,501	124,382
Asia-Pacific [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues	21,272	24,805	42,154	48,741
Revenues	$ 21,272	$ 24,805	$ 42,154	$ 48,741