Quarterly report pursuant to sections 13 or 15(d)

STOCK OPTION PLAN - SCHEDULE OF STOCK OPTIONS PLAN (Details)

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STOCK OPTION PLAN - SCHEDULE OF STOCK OPTIONS PLAN (Details) (USD $)
6 Months Ended 12 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Shares Available for Grant
         
Beginning balance 1,535,875 7,535,633   6,085,136  
Shares added to plan     4,656,991   6,085,136
Options granted     (3,206,494)    
Options granted Employees   (4,610,422)      
Options granted Non Employees   (3,601,407)      
Cancelled Shares   2,212,071      
Options vested 6,698,179        
Options vested and expected to vest 7,951,362        
Ending balance   1,535,875 4,535,633 6,085,136 6,085,136
Number Of Shares
         
Beginning balance   3,206,494      
Options granted     3,206,494    
Options granted Employees   4,610,422      
Options granted Non Employees   3,601,407      
Cancelled Shares   (2,212,071)      
Options exercised   (7,532,454)      
Ending balance   1,673,798      
Weighted Average Exercise Price
         
Exercised Price   0.01 0.01    
Weighted Average Remaining Contractual Term
         
Options granted     9.2