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Subsequent Events - Additional Information (Detail)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 31, 2024
AirCraft
Jun. 30, 2024
AirCraft
May 31, 2024
AirCraft
May 29, 2024
USD ($)
Engine
May 21, 2024
AirCraft
Apr. 30, 2024
AirCraft
Apr. 22, 2024
AirCraft
Apr. 15, 2024
USD ($)
Apr. 01, 2024
USD ($)
Engine
Airframes
Jan. 11, 2024
USD ($)
Mar. 31, 2024
USD ($)
Dec. 31, 2023
Airframes
Mar. 31, 2024
Airframes
AirCraft
Subsequent Event [Line Items]                          
Net proceeds from sale of asset                     $ 15.9    
Gross proceeds from sale of asset                     54.2    
C R J900 Aircraft [Member]                          
Subsequent Event [Line Items]                          
Number of aircraft to be removed | AirCraft                         2
Number of airframes without engines | Airframes                       11 11
Net proceeds from sale of asset                     15.9    
Gross proceeds from sale of asset                     54.2    
Revolving Credit Facility [Member]                          
Subsequent Event [Line Items]                          
Repayments of long term debt                   $ 2.1      
Subsequent Event [Member] | CF34-8C Aircraft [Member]                          
Subsequent Event [Line Items]                          
Number of surplus engines to be sold | Engine       9                  
Gross proceeds from sale of asset       $ 8.8                  
Subsequent Event [Member] | C R J900 Aircraft [Member]                          
Subsequent Event [Line Items]                          
Number of aircraft to be removed | AirCraft     1   1 2              
United Capacity Purchase Agreement [Member]                          
Subsequent Event [Line Items]                          
Repayments of long term debt                   10.5      
United Capacity Purchase Agreement [Member] | Revolving Credit Facility [Member]                          
Subsequent Event [Line Items]                          
Repayments of lines of credit                     $ 10.5    
United [Member]                          
Subsequent Event [Line Items]                          
Repayments of long term debt                   $ 10.5      
Forecast [Member] | C R J900 Aircraft [Member]                          
Subsequent Event [Line Items]                          
Number of aircraft to be removed | AirCraft 2 2                      
Purchase agreement [Member] | C R J900 Aircraft [Member]                          
Subsequent Event [Line Items]                          
Number of aircraft to be removed | AirCraft                         10
Purchase agreement [Member] | Additional CRJ-900 Aircraft [Member]                          
Subsequent Event [Line Items]                          
Number of aircraft to be removed | AirCraft                         6
RASPRO Asset Purchase and Sale [Member] | Subsequent Event [Member]                          
Subsequent Event [Line Items]                          
Number of airframes without engines | Airframes                 6        
Number of engines | Engine                 15        
Net proceeds from sale of asset                 $ 16.4        
Impact of Pilot Shortage and Transition of Operations to United [Member] | RASPRO Letter Agreement [Member] | Subsequent Event [Member]                          
Subsequent Event [Line Items]                          
Buyout price               $ 50.3          
Number of airframes without engines | AirCraft             15            
Number of engines | AirCraft             30