SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Segment Reporting, Revenue Reconciling Item [Line Items]
Product Revenues	$ 98,718	$ 127,706
Services revenues	37,353
Revenues	136,071	159,151
Video Products [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Product Revenues	58,824	68,593
Audio Products [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Product Revenues	39,894	59,113
Americas [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	50,815	63,134
Other Americas [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	13,103	13,356
Europe, Middle East and Africa [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	51,271	58,725
Asia-Pacific [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 20,882	$ 23,936