Quarterly report pursuant to Section 13 or 15(d)

Stock-based compensation (Details)

v3.2.0.727
Stock-based compensation (Details) - 6 months ended Jun. 30, 2015 - USD ($)
Total
Option activity  
Number of shares, Outstanding beginning balance 19,600,112
Number of shares, Outstanding ending balance 23,413,880
Aggregate intrinsic value, Outstanding beginning balance $ 18,061,000
Aggregate intrinsic value, Outstanding ending balance $ 20,675,000
Employee Stock Option [Member]  
Number of shares available for grant  
Shares available for future grant, beginning balance 32,863,000
Increase in authorized options 50,000,000
Number of shares, Granted 4,020,000
Number of shares, Cancelled 44,000
Shares available for future grant, ending balance 78,887,000
Option activity  
Number of shares, Outstanding beginning balance 19,600,000
Increase in authorized options 50,000,000
Number of shares, Exercised 162,000
Number of shares, Granted 4,020,000
Number of shares, Cancelled 44,000
Number of shares, Outstanding ending balance 23,414,000
Weighted average exercise price, Outstanding beginning balance $ .10
Weighted average exercise price, Exercised .12
Weighted average exercise price, Granted 1.10
Weighted average exercise price, Cancelled .11
Weighted average exercise price, Outstanding ending balance $ 0.27
Aggregate intrinsic value, Outstanding beginning balance $ 20,384,000
Aggregate intrinsic value, Outstanding ending balance $ 20,675,000