SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting, Revenue Reconciling Item [Line Items]
Product Revenues	$ 94,570	$ 98,718
Services revenues	40,412	37,353
Total net revenues	134,982	136,071
Revenues	134,982	136,071
Video Products [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Product Revenues	60,078	58,824
Audio Products [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Product Revenues	34,492	39,894
Americas [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues	45,079	50,815
Revenues	45,079	50,815
Other Americas [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues	14,479	13,103
Revenues	14,479	13,103
Europe, Middle East and Africa [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues	55,424	51,271
Revenues	55,424	51,271
Asia-Pacific [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues	20,000	20,882
Revenues	$ 20,000	$ 20,882