Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Details 1)

v3.19.1
Stock-Based Compensation (Details 1) - Stock Option [Member] - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Number of Shares, Outstanding, Beginning Balance 1,417,373 1,226,739  
Number of Shares, Granted 1,770,225 432,148  
Number of Shares, Exercised (293,778) (53,251)  
Number of Shares, Cancelled/Expired (528,997) (188,263)  
Number of Shares, Outstanding, Ending Balance 2,364,823 1,417,373 1,226,739
Number of Shares, Options vested and exercisable 1,161,287    
Weighted Average Exercise Price Outstanding, Beginning Balance $ 0.54 $ 0.54  
Weighted Average Exercise Price, Granted 1.11 0.52  
Weighted Average Exercise Price, Exercised 0.58 0.45  
Weighted Average Exercise Price, Cancelled/Expired 0.78 0.53  
Weighted Average Exercise Price, Ending Balance 0.90 $ 0.54 $ 0.54
Weighted Average Exercise Price, Options vested and exercisable $ 0.57    
Weighted Average Remaining Contractual Term (years), Outstanding 8 years 1 month 13 days 7 years 2 months 5 days 7 years 7 months 13 days
Weighted Average Remaining Contractual Term (years), Exercisable 5 years 9 months    
Aggregate Intrinsic Value, Outstanding $ 71,332 $ 53 $ 24
Aggregate Intrinsic Value, Options vested and exercisable $ 35,411