Quarterly report pursuant to Section 13 or 15(d)

Stock-based compensation (Details)

v3.5.0.2
Stock-based compensation (Details) - Employee Stock Option [Member]
$ / shares in Units, $ in Thousands
6 Months Ended
Jun. 30, 2016
USD ($)
$ / shares
shares
Number of shares available for grant  
Shares available for future grant, beginning balance 29,485
Number of shares, Exercised
Number of shares, Granted
Number of shares, Cancelled
Shares available for future grant, ending balance 29,485
Option activity  
Number of shares, Outstanding beginning balance 43,071
Number of shares, Exercised (20)
Number of shares, Granted
Number of shares, Cancelled
Number of shares, Outstanding ending balance 43,051
Weighted average exercise price, Outstanding beginning balance | $ / shares $ 0.48
Weighted average exercise price, Exercised | $ / shares 0.15
Weighted average exercise price, Granted | $ / shares
Weighted average exercise price, Cancelled | $ / shares
Weighted average exercise price, Outstanding ending balance | $ / shares $ .47
Aggregate intrinsic value, Outstanding beginning balance | $
Aggregate intrinsic value, options exercised | $
Aggregate intrinsic value, Outstanding ending balance | $ $ 172