v3.25.2
LONG-TERM DEBT - Narrative (Details)
 3 Months Ended 6 Months Ended
Nov. 13, 2024
USD ($)
Nov. 15, 2023
USD ($)
Sep. 20, 2023
USD ($)
shares
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
aircraft
Jun. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Debt Instrument [Line Items]                  
Amortization (accretion) of deferred financing costs and debt discount           $ 5,694,000 $ (1,328,000)    
Proceeds from long-term debt           19,551,000 0    
Long-term debt       $ 770,493,000   770,493,000      
Debt discounts and deferred financing costs       0 $ 2,200,000 0 2,700,000    
Term Loan                  
Debt Instrument [Line Items]                  
Relative fair value       307,556,000   307,556,000   $ 284,845,000 $ 44,900,000
Fair value allocation                 9,400,000
Initial Issuance                  
Debt Instrument [Line Items]                  
Allocation on relative fair value basis                 64,200,000
Issuance costs     $ 25,400,000            
Deferred Issuance                  
Debt Instrument [Line Items]                  
Common stock issued (in shares) | shares     529,926,270            
Allocation on relative fair value basis                 240,900,000
Private Placement, Reallocated Shares                  
Debt Instrument [Line Items]                  
Deferred issuance costs                 $ 30,600,000
Term Loan                  
Debt Instrument [Line Items]                  
Issuance costs     $ 4,100,000            
Common Stock | Initial Issuance                  
Debt Instrument [Line Items]                  
Common stock issued (in shares) | shares     141,313,671            
Revolving Equipment Notes | Notes Payable                  
Debt Instrument [Line Items]                  
Aggregate original principal amount $ 332,000,000                
Aggregate principal amount $ 331,300,000                
Debt instrument gross proceeds (in percent) 98.75%                
Debt Instrument term (in years) 5 years                
Amortization (accretion) of deferred financing costs and debt discount       700,000 0 $ 900,000 0    
Revolving Equipment Notes | Notes Payable | Aircraft                  
Debt Instrument [Line Items]                  
Number of aircraft | aircraft           92      
Revolving Equipment Notes | Notes Payable | Period One                  
Debt Instrument [Line Items]                  
Annual amortization of principal percent (as a percent) 10.00%                
Revolving Equipment Notes | Notes Payable | Period Two                  
Debt Instrument [Line Items]                  
Annual amortization of principal percent (as a percent) 12.00%                
Revolving Equipment Notes | Notes Payable | Closing Date to the end of the Availability Period                  
Debt Instrument [Line Items]                  
Debt instrument spread on variable rate (as a percent) 1.75%                
Revolving Equipment Notes | Notes Payable | Immediately after Availability Period to November 13, 2028                  
Debt Instrument [Line Items]                  
Debt instrument spread on variable rate (as a percent) 2.25%                
Revolving Equipment Notes | Notes Payable | November 13, 2028 to Maturity                  
Debt Instrument [Line Items]                  
Debt instrument spread on variable rate (as a percent) 2.75%                
Revolving Equipment Notes | Notes Payable                  
Debt Instrument [Line Items]                  
Aircraft for redemption | aircraft           6      
Debt redeemed       20,900,000   $ 20,900,000      
Revolving Equipment Notes | Notes Payable | Asset Pledged as Collateral                  
Debt Instrument [Line Items]                  
Flight equipment       298,800,000   $ 298,800,000      
New Revolving Equipment Notes | Notes Payable                  
Debt Instrument [Line Items]                  
Aircraft for redemption | aircraft           2      
Debt redeemed       19,600,000   $ 19,600,000      
Credit Agreement                  
Debt Instrument [Line Items]                  
Issuance costs     $ 29,500,000            
Credit Agreement | Term Loan and Revolving Credit Facility | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Aggregate original principal amount     100,000,000 100,000,000   100,000,000      
Credit Agreement | Term Loan and Revolving Credit Facility | Revolving Credit Facility | Indirect Guarantee of Indebtedness                  
Debt Instrument [Line Items]                  
Aggregate original principal amount       100,000,000   100,000,000      
Credit Agreement | Term Loan and Revolving Credit Facility | Term Loan                  
Debt Instrument [Line Items]                  
Amortization (accretion) of deferred financing costs and debt discount       3,200,000 $ 1,700,000 4,800,000 $ 4,100,000    
Face amount     350,000,000 $ 390,000,000   $ 390,000,000      
Proceeds from long-term debt   $ 39,200,000 $ 343,000,000            
Increment principal amount   40,000,000              
Stated rate (as a percent)     10.00%            
Credit agreement interest rate (as a percent)     2.00%            
Long-term debt   8,700,000 $ 41,400,000            
Unamortized debt issuance costs   700,000 3,400,000            
Unamortized debt discount   $ 30,600,000 $ 305,200,000