Quarterly report pursuant to Section 13 or 15(d)

SHARE-BASED COMPENSATION - Activity of Stock Options (Details)

v3.22.2
SHARE-BASED COMPENSATION - Activity of Stock Options (Details)
$ / shares in Units, $ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2022
USD ($)
$ / shares
shares
Dec. 31, 2021
USD ($)
$ / shares
shares
Stock Options    
Outstanding, beginning balance (in shares) | shares 784,193  
Granted (in shares) | shares 23,114  
Exercised (in shares) | shares (158,882)  
Forfeited (in shares) | shares (48,579)  
Expired (in shares) | shares (101,048)  
Outstanding, ending balance (in shares) | shares 498,798 784,193
Vested and expected to vest (in shares) | shares 488,265  
Vested and exercisable (in shares) | shares 367,724  
Weighted-Average Exercise Price    
Outstanding, beginning (USD per share) | $ / shares $ 5.91  
Granted (USD per share) | $ / shares 2.16  
Exercised (USD per share) | $ / shares 0.24  
Forfeited (USD per share) | $ / shares 10.00  
Expired (USD per share) | $ / shares 6.28  
Outstanding, ending (USD per share) | $ / shares 6.70 $ 5.91
Vested and expected to vest (USD per share) | $ / shares 6.61  
Vested and exercisable (USD per share) | $ / shares $ 6.27  
Weighted-Average Remaining Contractual Term (Years) and Aggregate Intrinsic Value    
Outstanding term 2 years 9 months 29 days 3 years 8 months 4 days
Granted term 9 years 6 months 18 days  
Vested and expected to vest term 2 years 9 months 3 days  
Vested and exercisable term 2 years 1 month 9 days  
Outstanding | $ $ 0 $ 0
Exercised | $ 130  
Vested and expected to vest | $ 0  
Vested and exercisable | $ $ 0