Acquisition (Details Textual) (USD $)	12 Months Ended			1 Months Ended	3 Months Ended		12 Months Ended		12 Months Ended			12 Months Ended										3 Months Ended		12 Months Ended
	Dec. 31, 2011 Y	Dec. 31, 2010	Dec. 31, 2009	Sep. 30, 2010 Omneon [Member]	Dec. 31, 2010 Omneon [Member]	Dec. 31, 2010 Omneon [Member]	Dec. 31, 2011 Omneon [Member] Y	Sep. 15, 2010 Omneon [Member]	Dec. 31, 2009 Scopus [Member]	Dec. 31, 2011 Scopus [Member]	Mar. 12, 2009 Scopus [Member]	Dec. 31, 2011 Existing Technology [Member] Omneon [Member] Y	Dec. 31, 2011 Existing Technology [Member] Scopus [Member] Y	Dec. 31, 2011 Trademarks and Tradenames [Member] Omneon [Member] Y	Dec. 31, 2011 Trademarks and Tradenames [Member] Scopus [Member] Y	Dec. 31, 2011 Patents/Core Technology [Member] Omneon [Member] Y	Dec. 31, 2011 Patents/Core Technology [Member] Scopus [Member] Y	Dec. 31, 2011 Customer Contracts [Member] Omneon [Member] Y	Dec. 31, 2011 Customer Contracts [Member] Scopus [Member] Y	Dec. 31, 2011 Maintenance Agreements [Member] Omneon [Member] Y	Dec. 31, 2011 Maintenance Agreements [Member] Scopus [Member] Y	Mar. 31, 2010 In-process Technology [Member] Projects	Dec. 31, 2009 In-process Technology [Member] Projects	Dec. 31, 2011 In-process Technology [Member] Omneon [Member] Y	Dec. 31, 2011 In-process Technology [Member] Scopus [Member] Y	Dec. 31, 2011 Order backlog [Member] Omneon [Member] M	Dec. 31, 2011 Order backlog [Member] Scopus [Member] M
Acquisitions (Textual) [Abstract]
Equity interest acquired								100.00%			100.00%
Goodwill					$ 147,208,000	$ 147,208,000	$ 0	$ 147,800,000	$ 22,847,000	$ 0	$ 22,800,000
Total Purchase Consideration net of Cash Received								251,300,000			63,100,000
Cash net of purchase price					40,485,000	40,485,000	0	40,500,000	23,316,000	0	23,300,000
Purchase price paid as net of cash								153,300,000
Number of common stocks paid as purchase price					14,200,000
Purchase price paid as Common Stocks								95,930,000
Fair value of equity awards included in purchase consideration							2,100,000	2,100,000
Transaction expenses					5,900,000	5,900,000			3,400,000
Fair value of stock options and restricted stock units issued to employees							17,300,000
Compensation expense to be recorded for stock options and restricted stock	30,900,000							15,200,000
Weighted average service period	2.5						2.5
Accounts receivable (Gross amount due from accounts receivable of $17,760 and $6,977, respectively)	118,138,000	107,549,000					17,760,000			6,977,000
Estimated useful life of intangible assets												4	5	4	5	4	4	6		6	4			4		0.29	0.5
Minimum estimated life of identified intangible assets																			4						3
Maximum estimated life of identified intangible assets																			5						6
Net revenue, Total	549,332,000	423,344,000	319,566,000			36,500,000
Operating profit	11,773,000	5,142,000	(12,035,000)			1,100,000
Number of completed in-process projects																						3	3
Expenses on obsolete inventory									8,200,000
Product revenue	477,346,000	370,783,000	280,009,000						19,300,000
Net income (loss)	$ 8,779,000	$ (4,335,000)	$ (24,139,000)						$ 22,500,000
Stock options to purchase				1,522,000			1,522,000
Number of shares to purchase under restricted stock units				1,455,000			1,455,000