XML 93 R79.htm IDEA: XBRL DOCUMENT v3.21.2
STOCK-BASED COMPENSATION - Additional Information (Details)
$ in Millions
3 Months Ended 9 Months Ended
Feb. 11, 2021
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation expense   $ 2.6   $ 64.3    
Reversal of stock compensation     $ 0.9   $ 7.6  
Unrecognized compensation   32.1   32.1    
Stock, exchange ratio 1          
RSUs            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation   25.6   $ 25.6    
Recognition period       3 years 7 months 20 days    
Holding Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation expense   0.7 $ 0.9 $ 2.1 $ 7.6  
Unrecognized compensation   6.5   $ 6.5   $ 9.5
Recognition period       2 years 11 months 26 days    
2021 Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation expense   $ 1.9   $ 62.3    
Common stock reserved for issuance (in shares) | shares   16,250,000   16,250,000    
Percentage of shares of common stock outstanding   2.00%   2.00%