XML 56 R46.htm IDEA: XBRL DOCUMENT v3.10.0.1
Common Stock - Summary of Stock Option Plan (Details) - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Granted 1,000  
Incentive Stock Options    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Beginning balance 3,733,544  
Granted 1,000  
Exercised (523,866)  
Canceled (557,057)  
Ending balance 2,653,621 3,733,544
Number of shares, vested and exercisable 1,481,939 1,648,917
Weighted average exercise price, beginning balance $ 4.53  
Weighted average exercise price, granted 13.89  
Weighted average exercise price, exercised 3.22  
Weighted average exercise price, canceled 6.27  
Weighted average exercise price, ending balance 4.43 $ 4.53
Weighted average exercise price, vested and exercisable $ 3.18 $ 2.89
Weighted average remaining contractual term 7 years 3 months 18 days 7 years 10 months 24 days
Weighted average remaining contractual term, vested and exercisable 6 years 6 months 6 years 8 months 12 days
Aggregate intrinsic value $ 18,982 $ 25,386
Aggregate intrinsic value, vested and exercisable $ 12,443 $ 13,924