Incapsula (Details) (USD $)	9 Months Ended							9 Months Ended
	Sep. 30, 2012 Series A Convertible Preferred Stock [Member] Times	Mar. 09, 2010 Series A Convertible Preferred Stock [Member]	Nov. 05, 2009 Series A Convertible Preferred Stock [Member]	Mar. 09, 2010 Series A-1 Convertible Preferred Stock [Member]	Mar. 09, 2010 Series A-1 Convertible Preferred Stock [Member] Forward Contracts [Member]	Jan. 31, 2012 Series A-1 Preferred Stock [Member]	Jul. 31, 2011 Series A-1 Preferred Stock [Member]	Sep. 30, 2012 Trailing Revenue [Member] Times
Incapsula (Textual) [Abstract]
Equity method investments, shares		6,666,666	5,000,000	8,750,000		4,375,000	4,375,000
Ownership interest		76.00%	58.00%			85.00%	82.00%
Cash consideration		$ 3,000,000		$ 7,000,000		$ 3,500,000	$ 3,500,000
Value assigned to license			0
Enterprise valuation for computation of share price	7							8
Net assets			0
Value assigned to forward contract					$ 0