Quarterly report pursuant to Section 13 or 15(d)

Stock-based compensation (Details)

v2.4.0.8
Stock-based compensation (Details) (USD $)
 9 Months Ended
Dec. 31, 2013
Sep. 30, 2014
Employee Stock Option [Member]
Number of shares, Outstanding beginning balance 288,000  
Number of shares, Converted outstanding options at January 1, 2014   4,402,890
Number of shares, Granted     
Number of shares, Exercised   (1,087,081)
Number of shares, Cancelled   (258,245)
Number of shares, Outstanding ending balance 288,000 3,057,564
Number of shares, Options exercisable ending   2,831,058
Weighted average exercise price, Outstanding beginning balance   $ 0.11
Weighted average exercise price, Granted     
Weighted average exercise price, Exercised   $ 0.11
Weighted average exercise price, Cancelled   $ 0.11
Weighted average exercise price, Outstanding ending balance   $ 0.11
Weighted average exercise price, Options exercisable   $ 0.10
Aggregate intrinsic value, Outstanding beginning balance   $ 1,113,931
Aggregate intrinsic value, Granted     
Aggregate intrinsic value, Exercised   (273,944)
Aggregate intrinsic value, Cancelled   (64,561)
Aggregate intrinsic value, Outstanding ending balance   764,391
Aggregate intrinsic value, Options exercisable   $ 736,075