XML 172 R38.htm IDEA: XBRL DOCUMENT v3.25.1
Organization and Operations - Additional Information (Detail)
$ in Thousands
 12 Months Ended
Apr. 04, 2025
Apr. 03, 2025
USD ($)
Engine
Airframes
Mar. 18, 2025
Feb. 25, 2025
AirCraft
Dec. 31, 2024
USD ($)
AirCraft
Dec. 24, 2024
USD ($)
Airframes
Dec. 23, 2024
USD ($)
Oct. 01, 2024
USD ($)
AirCraft
Sep. 25, 2024
USD ($)
AirCraft
Jan. 19, 2024
AirCraft
Sep. 30, 2024
USD ($)
DailyDeparture
AirCraft
State
City
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Dec. 30, 2024
USD ($)
Jul. 16, 2024
USD ($)
Mar. 15, 2024
USD ($)
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Number of states in which entity operates | State                     34          
Number of aircrafts operated | AirCraft                     67          
Number of cities in which entity operates | City                     67          
Number of daily departures | DailyDeparture                     265          
Net (loss) income                     $ (91,015) $ (120,116) $ (182,678)      
impairment expense                     73,700 50,600 62,100      
Long-term debt                     50,500          
Increase in block hour rate percentage 3.00%                              
Purcahse of aircraft                     20,313 36,641 $ 40,814      
Outstanding principal amount                     310,271 $ 528,278        
Wind-down and associated cost                               $ 1,000
United Revolving Credit Facility [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Revolving loan                 $ 12,400              
United Revolving Credit Facility [Member] | Subsequent Event [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Loan balance forgiven                           $ 4,500    
UST Loan [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Outstanding principal amount                     $ 113,700          
UST Loan [Member] | Subsequent Event [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Minimum collateral coverage ratio             1.55                  
United Capacity Purchase Agreement [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Minimum liquidity requirement of cash and cash equivalents                             $ 15,000  
United Capacity Purchase Agreement [Member] | Subsequent Event [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Reimbursement of transition expenses               $ 14,000                
Maximum [Member] | UST Loan [Member] | Subsequent Event [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Minimum collateral coverage ratio     1                          
Maximum [Member] | United Capacity Purchase Agreement [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Number of aircrafts operated | AirCraft                     67          
Minimum [Member] | UST Loan [Member] | Subsequent Event [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Minimum collateral coverage ratio     0.91       0.99                  
Aircraft Purchase Agreement [Member] | UST Loan [Member] | Subsequent Event [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Gross proceeds from sale of asset               22,400                
Repayment of loan               $ 21,000                
CRJ-700 Aircraft [Member] | Subsequent Event [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Number of aircraft sold | AirCraft               2                
Proceeds from sale of asset               $ 6,800                
Gross proceeds from sale of asset               $ 11,000                
CRJ-700 Aircraft [Member] | United Capacity Purchase Agreement [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Number of aircraft leased | AirCraft                 2              
Purcahse of aircraft                 $ 11,000              
Payment of outstanding obligations                 $ 4,500              
Number of aircrafts purchased | AirCraft                 2              
CRJ-900 Aircraft [Member] | United Capacity Purchase Agreement [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Number of aircrafts operated | AirCraft                     12          
Number of aircrafts to be removed | AirCraft                     14          
CRJ-900 Aircraft [Member] | United Capacity Purchase Agreement [Member] | Subsequent Event [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Number of aircrafts to be removed | AirCraft       12                        
CRJ-900 Covered Aircraft [Member] | United Capacity Purchase Agreement [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Number of aircrafts to be removed | AirCraft                   8            
CF34-8C Engine [Member] | Purchase Agreement [Member] | UST Loan [Member] | Subsequent Event [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Expected gross proceeds from sale of asset   $ 16,300                            
Number of aircraft classified as assets held for sale | Engine   23                            
CRJ-900 Airframes [Member] | Purchase Agreement [Member] | UST Loan [Member] | Subsequent Event [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Expected gross proceeds from sale of asset   $ 9,100       $ 19,000                    
Total expected gross proceeds from sale of productive assets   $ 28,100                            
Number of aircraft classified as assets held for sale | Airframes   14       15                    
E-175 Aircraft [Member] | United Capacity Purchase Agreement [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Number of aircrafts operated | AirCraft                     55          
Number of aircrafts to be removed | AirCraft                     18          
E-175 Aircraft [Member] | Aircraft Purchase Agreement [Member] | Subsequent Event [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Number of aircraft sold | AirCraft         18                      
Expected gross proceeds from sale of asset         $ 227,700                      
Expected proceeds from sale of asset         $ 84,700                      
United [Member] | E-175 Aircraft [Member] | Subsequent Event [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Pilot training costs             $ 14,000                  
United [Member] | E-175 Aircraft [Member] | United Capacity Purchase Agreement [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Number of aircrafts operated | AirCraft                     42          
Lease expiration year                     2028          
Number of aircrafts owned | AirCraft                     18          
Notice period for termination of agreement                     United, subject to certain conditions, including the payment of certain costs tied to aircraft type, to terminate the agreement in its discretion, or remove aircraft from service, by giving us notice of 90 days or more          
United [Member] | E-175 Aircraft [Member] | Maximum [Member] | United Capacity Purchase Agreement [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Lease expiration year                     2028          
United [Member] | E-175 Aircraft [Member] | Minimum [Member] | United Capacity Purchase Agreement [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Lease expiration year                     2024          
United [Member] | CRJ-900 and E-175 Aircraft [Member] | United Capacity Purchase Agreement [Member] | Subsequent Event [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Number of combined fleet | AirCraft               60                
Decrease in Scheduled Flying Activity [Member]                                
Organization Consolidation And Presentation Of Financial Statements [Line Items]                                
Net (loss) income                     $ (91,000)          
impairment expense                     $ 73,700