Segment Information (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Oct. 01, 2010	Sep. 30, 2011	Oct. 01, 2010
Summary of revenue by product type
Revenue by type, Total	$ 138,871	$ 104,784	$ 405,702	$ 285,149
Video processing products [Member]
Summary of revenue by product type
Revenue by type, Total	57,027	51,005	172,310	139,893
Production and playout products [Member]
Summary of revenue by product type
Revenue by type, Total	26,619	4,880	73,005	4,880
Edge and access products [Member]
Summary of revenue by product type
Revenue by type, Total	38,308	34,712	109,662	104,519
Service and support [Member]
Summary of revenue by product type
Revenue by type, Total	$ 16,917	$ 14,187	$ 50,725	$ 35,857