Quarterly report pursuant to Section 13 or 15(d)

STOCK BASED COMPENSATION - Restricted Stock Awards (Details)

v3.22.1
STOCK BASED COMPENSATION - Restricted Stock Awards (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Weighted Average Grant Date Fair Value    
Total stock based compensation expenses $ 9,912 $ 2,217
Weighted-average period 2 years 2 months 12 days  
Restricted Stock awards    
Shares Subject to Vesting    
Balance at beginning of period, unvested shares (in shares) 264  
Cancelled/Forfeited (5)  
Vested (in shares) (84)  
Balance at end of period, unvested shares (in shares) 175  
Weighted Average Grant Date Fair Value    
Balance at beginning of Period, unvested shares (in dollars per share) $ 7.79  
Cancelled/Forfeited (in dollars per share) 8.78  
Vested (in dollars per share) 6.90  
Balance at end of Period, unvested shares (in dollars per share) $ 7.79  
Total stock based compensation expenses $ 400 $ 200
Unrecognized stock-based compensation expense $ 1,500  
Weighted-average period 1 year 10 months 24 days