v3.26.1
STOCKHOLDERS’ EQUITY AND EQUITY-BASED COMPENSATION - Narrative (Details)
3 Months Ended 6 Months Ended
Apr. 13, 2026
$ / shares
shares
Mar. 31, 2026
shares
Mar. 30, 2026
shares
Aug. 29, 2025
USD ($)
Jul. 13, 2021
$ / shares
shares
Jun. 30, 2026
USD ($)
vote
$ / shares
shares
Jun. 30, 2025
USD ($)
$ / shares
shares
Jun. 30, 2026
USD ($)
vote
plan
trading_day
$ / shares
shares
Jun. 30, 2025
USD ($)
$ / shares
shares
Apr. 24, 2026
shares
Apr. 12, 2026
shares
Dec. 31, 2025
shares
Nov. 15, 2023
USD ($)
Sep. 20, 2023
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Authorized shares (in shares)                   100,000,000        
Common stock authorized (in shares) 75,000,000.0         75,000,000   75,000,000     1,500,000,000 75,000,000    
Preferred stock authorized (in shares)                   25,000,000        
Voting rights, non-citizen investors (as a percent)               1.00%            
Warrant exercise price (in dollars per share) | $ / shares $ 2,300       $ 2,300 $ 2,300 $ 115.00 $ 2,300 $ 115.00          
Capacity to issue (in shares)           600,000   600,000            
Number of equity-based compensation plans | plan               9            
Compensation expense (reversal) | $           $ 12,543,000 $ 8,295,000 $ 23,931,000 $ 20,956,000          
Treasury stock, at cost (in shares)           99,372   99,372       78,616    
Reverse stock split ratio 0.05                          
Warrant right to purchase shares (in shares) 0.005       0.005 0.005 0.1 0.005 0.1          
Term Loans | Credit Agreement | Term Loan and Revolving Credit Facility                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Issuances | $           $ 390,000,000.0   $ 390,000,000.0         $ 390,000,000.0 $ 350,000,000.0
2021 LTIP                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Common stock available for awards (in shares)   6,800,000 3,100,000                      
Shares authorized (in shares)           6,800,000   6,800,000            
CEO Performance Plan                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Inducement grant plan (up to) (in shares)           3,700,000   3,700,000            
CFO Performance Plan                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Inducement grant plan (up to) (in shares)           600,000   600,000            
CCO Performance Plan                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Inducement grant plan (up to) (in shares)           800,000   800,000            
WUP Profits Interests                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Weighted average remaining contractual term (in years)               5 years            
Stock options | WUP Stock Option Plan                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Service period (in years)               4 years            
Vesting period (in years)               4 years            
Expiration period (in years)               10 years            
Aggregate intrinsic value | $           $ 0   $ 0            
Weighted average remaining contractual term, exercisable (in years)               2 years 9 months 18 days            
Stock options | 2021 LTIP                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Service period (in years)               3 years            
Vesting period (in years)               3 years            
Aggregate intrinsic value | $           0   $ 0            
Weighted average remaining contractual term, outstanding (in years)               1 year 4 months 24 days            
RSUs | 2021 LTIP                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Unrecognized compensation | $           $ 26,600,000   $ 26,600,000            
Unrecognized compensation cost recognition period (in years)               2 years 7 months 6 days            
Nonvested awards (in shares)           1,557,000   1,557,000       812,000    
RSUs | 2021 LTIP | Maximum                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Service period (in years)               4 years            
Vesting period (in years)               4 years            
PSUs | 2021 LTIP                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Unrecognized compensation | $           $ 2,200,000   $ 2,200,000            
Unrecognized compensation cost recognition period (in years)               1 year 10 months 24 days            
Nonvested awards (in shares)           189,000   189,000       85,000    
Executive Performance Award                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Unrecognized compensation | $           $ 91,400,000   $ 91,400,000            
Unrecognized compensation cost recognition period (in years)               2 years 6 months            
Number of trading day period prior to the applicable determination date | trading_day               60            
Compensation expense (reversal) | $           9,092,000 $ 4,989,000 $ 18,086,000 $ 14,516,000          
Executive Performance Award | CEO Performance Plan                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Expected term (in years)               5 years 2 months 12 days            
Executive Performance Award | CEO Performance Plan | Fourth share price vesting threshold                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting rights percentage (as a percent)               25.00%            
Executive Performance Award | CEO Performance Plan | Second share price vesting threshold                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting rights percentage (as a percent)               25.00%            
Executive Performance Award | CEO Performance Plan | First share price vesting threshold                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting rights percentage (as a percent)               25.00%            
Executive Performance Award | CEO Performance Plan | Third share price vesting threshold                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting rights percentage (as a percent)               25.00%            
Executive Performance Award | CFO Performance Plan                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Expected term (in years)               3 years 9 months 18 days            
Executive Performance Award | CFO Performance Plan | Second share price vesting threshold                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting rights percentage (as a percent)               33.333%            
Executive Performance Award | CFO Performance Plan | First share price vesting threshold                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting rights percentage (as a percent)               33.333%            
Executive Performance Award | CFO Performance Plan | Third share price vesting threshold                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting rights percentage (as a percent)               33.333%            
Executive Performance Award | CCO Performance Plan                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Award vesting rights percentage (as a percent)               50.00%            
Expected term (in years)               4 years 8 months 12 days            
Forfeited (as a percent)             0.50   0.50          
Former Earnout Shares                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Nonvested awards (in shares)         45,000                  
Compensation expense (reversal) | $           $ 0 $ 0 $ 0 $ 0          
Former Earnout Shares | Second share price vesting threshold                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Nonvested awards (in shares)           15,000   15,000            
Former Earnout Shares | First share price vesting threshold                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Nonvested awards (in shares)           15,000   15,000            
Former Earnout Shares | Third share price vesting threshold                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Nonvested awards (in shares)           15,000   15,000            
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 (reversal) | $               $ 57,900,000            
CK Wheels                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Voting restrictions (as a percent)           23.90%   23.90%            
Delta                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Voting restrictions (as a percent)           29.90%   29.90%            
Common Stock                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Common stock authorized (in shares)                   75,000,000        
Voting rights per share | vote           1   1            
Common Stock | ATM Program                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Aggregate sales price | $       $ 50,000,000.0                    
Common Class A | Stock options | WUP Stock Option Plan                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Number of common stock exercisable for each outstanding stock option (in shares)           1   1            
Common Class A | Former Earnout Shares | Second share price vesting threshold                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Vesting milestone (in dollars per share) | $ / shares         $ 3,000                  
Common Class A | Former Earnout Shares | First share price vesting threshold                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Vesting milestone (in dollars per share) | $ / shares         2,500                  
Common Class A | Former Earnout Shares | Third share price vesting threshold                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Vesting milestone (in dollars per share) | $ / shares         $ 3,500                  
Common Class B | First share price vesting threshold                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Minimum threshold days (in days)         20 days                  
Number of consecutive trading days (in days)         30 days