SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting, Revenue Reconciling Item [Line Items]
Product Revenues	$ 105,330	$ 92,969	$ 287,215	$ 291,545
Services net revenues	37,099	45,924	114,840	124,764
Total net revenues	142,429	138,893	402,055	416,309
Revenues	142,429	138,893	402,055	416,309
Video products and solutions net revenues [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Product Revenues	63,275	57,683	178,849	174,569
Audio products and solutions net revenues [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Product Revenues	42,055	35,286	108,366	116,976
United States [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues	54,215	53,904	143,947	160,829
Revenues	54,215	53,904	143,947	160,829
Other Americas [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues	10,895	11,891	35,505	36,727
Revenues	10,895	11,891	35,505	36,727
Europe, Middle East and Africa [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues	58,099	51,943	167,621	155,444
Revenues	58,099	51,943	167,621	155,444
Asia-Pacific [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues	19,220	21,155	54,982	63,309
Revenues	$ 19,220	$ 21,155	$ 54,982	$ 63,309