Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDER???S EQUITY AND EQUITY-BASED COMPENSATION - Narrative (Details)

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STOCKHOLDER’S EQUITY AND EQUITY-BASED COMPENSATION - Narrative (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended
Jul. 13, 2021
USD ($)
$ / shares
shares
Mar. 31, 2022
USD ($)
plan
$ / shares
shares
Mar. 31, 2021
USD ($)
Dec. 31, 2021
$ / shares
shares
Jun. 23, 2021
vote
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Common stock authorized (in shares) | shares   2,500,000,000   2,500,000,000  
Common stock par value (in dollars per share) | $ / shares   $ 0.0001   $ 0.0001  
Preferred stock authorized (in shares) | shares         25,000,000
Preferred stock par value (in dollars per share) | $ / shares         $ 0.0001
Number of approved plans | plan   9      
Compensation expense   $ 22,554 $ 1,414    
Shares withheld for employee taxes on vested equity (In shares) | shares   1,682,380      
Shares withheld for employee taxes on vested equity awards   $ 6,100      
Shares withheld for tax withholding obligation per share (in dollars per share) | $ / shares   $ 3.63      
WUP Stock Option Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation   $ 3,600      
Fair value of stock options vested   $ 600      
2021 LTIP          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares authorized (in shares) | shares   27,300,000      
Unrecognized compensation   $ 3,100      
Fair value of stock options vested   $ 400      
WUP Profits Interests          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Weighted average remaining contractual term (in years)   9 years 3 months 18 days      
Unrecognized compensation cost   $ 600      
Unrecognized compensation cost recognition period (in years)   10 months 24 days      
Total vested fair value   $ 800      
Compensation expense   $ 700 300    
Nonvested awards (in shares) | shares   2,365,000   4,733,000  
WUP Profits Interests | MIP Plan VII          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares authorized (in shares) | shares   31,300,000      
WUP Restricted Interests          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Weighted average remaining contractual term (in years)   7 years 9 months 18 days      
Unrecognized compensation cost recognition period (in years)   4 months 24 days      
Total vested fair value   $ 14,300      
Unrecognized compensation   $ 200      
Vesting period (in years)   4 years      
Service period (in years)   4 years      
Vesting period after initial public offering (in months)   6 months      
Vesting period after lock-up period (in days)   30 days      
Compensation expense   $ 200 0    
WUP Restricted Interests | MIP Plan VII          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares authorized (in shares) | shares   4,700,000      
Stock options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Compensation expense   $ 3,100 1,200    
Stock options | WUP Stock Option Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares authorized (in shares) | shares   17,500,000      
Unrecognized compensation cost recognition period (in years)   1 year 3 months 18 days      
Aggregate intrinsic value   $ 0      
Weighted average remaining contractual term, outstanding (in years)   7 years 7 months 6 days      
Weighted average remaining contractual term, exercisable (in years)   7 years 4 months 24 days      
Stock options | 2021 LTIP          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation cost recognition period (in years)   2 years 1 month 6 days      
Aggregate intrinsic value   $ 0      
Weighted average remaining contractual term, outstanding (in years)   9 years 3 months 18 days      
Weighted average remaining contractual term, exercisable (in years)   9 years 3 months 18 days      
RSUs          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Compensation expense   $ 9,000 0    
RSUs | 2021 LTIP          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation cost recognition period (in years)   2 years 4 months 24 days      
Unrecognized compensation   $ 73,200      
Fair value of stock options vested   $ 700      
Nonvested awards (in shares) | shares   15,576,000   8,411,000  
Earnout Share          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation cost recognition period (in years)   1 year      
Unrecognized compensation   $ 30,400      
Compensation expense   $ 9,500 $ 0    
Nonvested awards (in shares) | shares 9,000,000        
Earnout Share | First share price vesting threshold          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Nonvested awards (in shares) | shares   3,000,000      
Earnout Share | Second share price vesting threshold          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Nonvested awards (in shares) | shares   3,000,000      
Earnout Share | Third share price vesting threshold          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Nonvested awards (in shares) | shares   3,000,000      
Profit Interest Based Award and Restricted Stock          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Weighted average remaining contractual term (in years) 1 year 8 months 12 days        
Compensation expense $ 57,900        
Common Class A          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Common stock authorized (in shares) | shares         2,500,000,000
Common stock par value (in dollars per share) | $ / shares         $ 0.0001
Voting rights per share (per share) | vote         1
Common Class A | Earnout Share          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Expiration period (in years) 5 years        
Common Class A | Earnout Share | First share price vesting threshold          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting milestone (in dollars per share) | $ / shares $ 12.50        
Minimum threshold days (in days) 20 days        
Number of consecutive trading days (in days) 30 days        
Expiration period (in years) 5 years        
Common Class A | Earnout Share | Second share price vesting threshold          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting milestone (in dollars per share) | $ / shares $ 15.00        
Common Class A | Earnout Share | Third share price vesting threshold          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Vesting milestone (in dollars per share) | $ / shares $ 17.50