Annual report pursuant to Section 13 and 15(d)

STOCK BASED COMPENSATION - Restricted Stock Units (Details)

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STOCK BASED COMPENSATION - Restricted Stock Units (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
1 Months Ended 12 Months Ended
Jul. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 1 year    
Cliff Vesting Period 4 years    
Weighted-average period   2 years 4 months 24 days  
Expenses recognized $ 3.6    
Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period   4 years  
Cliff Vesting Period   1 year  
Unrecognized compensation costs, non-vested RSUs   $ 103.5  
Weighted-average period   3 years 6 months  
Expenses recognized   $ 18.8 $ 0.6
Shares Subject to Vesting      
Balance at beginning of period, unvested shares (in shares)   683  
Granted (in shares)   19,046  
Vested (in shares)   (651)  
Cancelled/Forfeited   (2,683)  
Balance at end of period, unvested shares (in shares)   16,395 683
Weighted Average Grant Date Fair Value      
Balance at beginning of Period, unvested shares (in dollars per share)   $ 8.02  
Granted (in dollars per share)   7.12  
Vested (in dollars per share)   11.29  
Cancelled/Forfeited   3.12  
Balance at end of Period, unvested shares (in dollars per share)   $ 7.54 $ 8.02