SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended					12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting, Revenue Reconciling Item [Line Items]
Products						$ 395,531	$ 478,830	$ 660,720
Services						167,881	156,873
Total net revenues	147,103	138,893	141,345	136,071	160,469	563,412	635,703	766,885
Revenues	147,103	138,893	141,345	136,071	160,469	563,412	635,703	766,885
Long-lived assets	37,578				45,234	37,578	45,234
Video Products [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Products						243,173	276,909	298,633
Audio Products [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Products						152,358	201,921	362,087
Americas [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues						218,154	249,364	316,553
Revenues						218,154	249,364	316,553
Other Americas [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues						43,131	47,817	62,162
Revenues						43,131	47,817	62,162
Europe, Middle East and Africa [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues						214,441	245,189	267,678
Revenues						214,441	245,189	267,678
Asia-Pacific [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Total net revenues						87,686	93,333	120,492
Revenues						87,686	93,333	120,492
United States [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Long-lived assets	33,193				39,948	33,193	39,948
Other Countries [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Long-lived assets	$ 4,385				$ 5,286	$ 4,385	$ 5,286