XML 45 R34.htm IDEA: XBRL DOCUMENT v3.20.2
Stock-Based Compensation (Schedule of Share Option Activity) (Details) - Stock Options [Member]
6 Months Ended
Jun. 30, 2020
$ / shares
shares
Number of Options Outstanding  
Options outstanding | shares 100,278
Granted | shares 36,400
Cancelled/forfeited | shares (2,084)
Options outstanding | shares 134,594
Unvested | shares 74,451
Vested and exercisable | shares 60,143
Weighted Average Exercise Price Per Share  
Options outstanding | $ / shares $ 54.40
Granted | $ / shares 4.70
Cancelled/forfeited (in dollars per share) | $ / shares 176.56
Options outstanding | $ / shares 39.03
Unvested | $ / shares 10.03
Vested and exercisable | $ / shares $ 74.93
Weighted Average Remaining Contractual Term (Years)  
Options outstanding 8 years 7 months 13 days
Unvested 9 years 2 months 23 days
Vested and exercisable 7 years 10 months 13 days