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Derivatives and Hedging Activities - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Derivative [Line Items]        
Gain (loss) on termination of hedging derivatives $ 0 $ 0 $ 0 $ 14,110
Interest Rate Swap | Minimum        
Derivative [Line Items]        
Derivative, maturities     2 years  
Interest Rate Swap | Maximum        
Derivative [Line Items]        
Derivative, maturities     8 years  
Interest Rate Swap | Weighted average        
Derivative [Line Items]        
Derivative, maturities     6 years 9 months 18 days  
Interest Rate Swap One | Designated as Hedging Instrument | Cash flow hedging        
Derivative [Line Items]        
Notional amount of derivative terminated       $ 400,000
Effective interest rate of derivative terminated       2.15%
Interest Rate Swap Two | Designated as Hedging Instrument | Cash flow hedging        
Derivative [Line Items]        
Notional amount of derivative terminated       $ 200,000
Effective interest rate of derivative terminated       0.79%
Interest Rate Swap Three | Designated as Hedging Instrument | Cash flow hedging        
Derivative [Line Items]        
Notional amount of derivative terminated       $ 150,000
Effective interest rate of derivative terminated       2.91%