XML 47 R36.htm IDEA: XBRL DOCUMENT v3.20.2
STOCKHOLDERS' EQUITY - Stock option activity (Details) - Employee Stock Option [Member] - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Equity Incentive Plans Stock Option Activity [Line Items]    
Number of shares, Outstanding Beginning Balance 2,605,730  
Number of shares, Granted. 75,000  
Number of shares, Exercised (23,500)  
Number of shares, Forfeited (18,750)  
Number of shares, Expired 0  
Number of shares, Outstanding Ending Balance 2,638,480 2,605,730
Weighted - average exercise price, Outstanding Beginning Balance $ 6.73  
Weighted - average exercise price, Granted 8.21  
Weighted - average exercise price, Exercised 4.10  
Weighted - average exercise price, Forfeited 4.10  
Weighted - average exercise price, Expired 0  
Weighted - average exercise price, Outstanding Ending Balance $ 7.14 $ 6.73
Weighted - average Contractual Term 8 years 6 months 14 days 8 years 11 months 1 day
Aggregate Intrinsic Value, Outstanding $ 33,882,315 $ 11,706,110