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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Additional Information (Details)
$ in Thousands
 3 Months Ended
Sep. 30, 2025
USD ($)
derivative_instrument
Jun. 30, 2025
USD ($)
Derivative [Line Items]    
Collateral posted $ 4,400 $ 4,700
Pipeline of loans held-for-sale 21,400 $ 11,100
Interest Expense    
Derivative [Line Items]    
Amount of gain reclassified from accumulated other comprehensive income to interest expense 5,400  
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months 7,600  
Interest Income    
Derivative [Line Items]    
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months $ 110  
Cash Flow Hedges | Interest Rate Swaps    
Derivative [Line Items]    
Number of interest rate derivative instruments held | derivative_instrument 15  
Derivative, notional amount $ 1,800,000  
Cash Flow Hedges | Interest Rate Floor    
Derivative [Line Items]    
Number of interest rate derivative instruments held | derivative_instrument 5  
Derivative, notional amount $ 550,000  
Fair Value Hedging | Interest Rate Swaps | Fixed Rate Residential Mortgage    
Derivative [Line Items]    
Number of interest rate derivative instruments held | derivative_instrument 5  
Derivative, notional amount $ 775,000