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Debt - 2018 Narrative (Details) - USD ($)
12 Months Ended
Sep. 23, 2022
Nov. 08, 2021
Dec. 11, 2018
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2022
Debt Instrument [Line Items]            
Purchase value of aircraft     $ 2,800,000      
Acquire productive assets     554,000 $ 24,600,000 $ 40,384,000 $ 24,003,000
Remaining amount to be paid for purchase of aircraft     $ 2,200,000      
Debt interest rate   4.00%        
Debt instrument term   7 years        
Installment amount $ 18,298          
5.49% Promissory Note            
Debt Instrument [Line Items]            
Debt interest rate     5.49%      
Debt instrument term     20 years      
Installment amount     $ 15,118