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Derivative Instruments and Hedging Activities - Additional Information (Details)
$ in Thousands
 12 Months Ended
Jun. 30, 2023
USD ($)
derivativeInstrument
Jun. 30, 2022
USD ($)
Jun. 30, 2021
USD ($)
Derivative [Line Items]      
Reclassifications to interest expense $ (20,393) $ 4,273 $ 8,281
Interest Expense      
Derivative [Line Items]      
Reclassifications to interest expense 20,400    
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months 33,800    
Interest Income      
Derivative [Line Items]      
Reclassifications to interest expense 0    
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months 200    
Credit Risk Contract      
Derivative [Line Items]      
Pipeline of loans held-for-sale $ 11,700 $ 20,300  
Cash Flow Hedges | Interest Rate Swaps      
Derivative [Line Items]      
Number of interest rate derivative instruments held | derivativeInstrument 13    
Derivative, notional amount $ 1,450,000    
Cash Flow Hedges | Interest Rate Floor      
Derivative [Line Items]      
Number of interest rate derivative instruments held | derivativeInstrument 1    
Derivative, notional amount $ 100,000    
Fair Value Hedging | Interest Rate Swaps      
Derivative [Line Items]      
Number of interest rate derivative instruments held | derivativeInstrument 5    
Derivative, notional amount $ 675,000