v3.25.2
Fresh Start Accounting - Narrative (Details)
$ in Thousands
 2 Months Ended 3 Months Ended 4 Months Ended 6 Months Ended
Mar. 13, 2025
USD ($)
debtInstrument
shares
Mar. 12, 2025
USD ($)
shares
Mar. 12, 2025
USD ($)
shares
Jun. 30, 2025
USD ($)
right
aircraft
Jun. 30, 2025
USD ($)
right
aircraft
Jun. 30, 2025
USD ($)
right
aircraft
Mar. 18, 2025
Dec. 31, 2024
USD ($)
Reorganization, Chapter 11 [Line Items]                
Reorganization, percent of successor common shares received by predecessor shareholders less than           50.00%    
Assets $ 8,719,994 $ 8,720,000 $ 8,720,000 $ 8,576,287 $ 8,576,287 $ 8,576,287   $ 9,595,178
Reorganization value 8,720,000 $ 9,819,000 9,819,000          
Selected enterprise value within bankruptcy court range $ 6,450,000              
Number of Exit Secured Notes | debtInstrument 35              
Number of publicly-traded Enhances Equipment Trust Certificates ("EETCs") | debtInstrument 4              
Number of fixed aircraft loans | debtInstrument 22              
Number of Payroll Support Program Agreements | debtInstrument 3              
Number of aircraft to be purchased | aircraft       22 22 22    
Repayments of long-term debt     $ 25,500 $ 35,900 $ 42,100      
Warrant outstanding (in shares) | shares 24,255,256 24,255,256 24,255,256          
Intangible assets $ 83,482     83,482 83,482 $ 83,482   550
Deferred income taxes $ 69,408     $ 64,757 $ 64,757 $ 64,757   $ 51,927
Warrants, Tranche 1                
Reorganization, Chapter 11 [Line Items]                
Warrant outstanding (in shares) | shares   3,617,385 3,617,385          
Warrants, Tranche 2                
Reorganization, Chapter 11 [Line Items]                
Warrant outstanding (in shares) | shares   20,637,871 20,637,871          
Private Placement                
Reorganization, Chapter 11 [Line Items]                
Sale of stock, number of shares issued in transaction (in shares) | shares 16,067,305              
Warrant outstanding (in shares) | shares 13,380,504              
Reorganization Items                
Reorganization, Chapter 11 [Line Items]                
Assets   $ (286,711) $ (286,711)          
Payment of professional fees at Emergence   8,191            
Debtor reorganization items, success fees   2,600            
Repayments of long-term debt   309,000            
Capitalized heavy maintenance costs, write-off   120,900            
Impact of deferred gain on sale leaseback write off   24,500            
Deferred income taxes   $ 16,900 $ 16,900          
Reorganization Items | Air Carrier Slots                
Reorganization, Chapter 11 [Line Items]                
Intangible assets $ 83,500              
Exit secured notes | Secured Debt                
Reorganization, Chapter 11 [Line Items]                
Principal amount 840,000              
Stated interest rate percentage             92.50%  
LaGuardia Airport | Valuation, Market Approach Or Income Approach                
Reorganization, Chapter 11 [Line Items]                
Number of airport take-off and landing sights ("Slots") | right       22 22 22    
G.A. Telesis                
Reorganization, Chapter 11 [Line Items]                
Number of aircraft to be sold | aircraft           21    
Minimum                
Reorganization, Chapter 11 [Line Items]                
Selected enterprise value within bankruptcy court range $ 6,100,000              
Debt instrument, fair value, aircraft loan (as a percent) 95.61%              
Minimum | Exit secured notes | Secured Debt                
Reorganization, Chapter 11 [Line Items]                
Stated interest rate percentage 11.00%              
Minimum | Enhanced Equipment Trust Certificate | Secured Debt                
Reorganization, Chapter 11 [Line Items]                
Stated interest rate percentage 87.32%              
Maximum                
Reorganization, Chapter 11 [Line Items]                
Selected enterprise value within bankruptcy court range $ 6,800,000              
Debt instrument, fair value, aircraft loan (as a percent) 99.84%              
Maximum | Exit secured notes | Secured Debt                
Reorganization, Chapter 11 [Line Items]                
Stated interest rate percentage 12.00%              
Maximum | Enhanced Equipment Trust Certificate | Secured Debt                
Reorganization, Chapter 11 [Line Items]                
Stated interest rate percentage 92.85%