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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Additional Information (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2025 USD ($) derivative_instrument	Mar. 31, 2025 USD ($) derivative_instrument	Jun. 30, 2024 USD ($)
Derivative [Line Items]
Pipeline of loans held-for-sale	$ 23,000	$ 23,000	$ 16,000
Interest Expense
Derivative [Line Items]
Amount of gain reclassified from accumulated other comprehensive income to interest expense	$ 5,300	21,000
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months		14,200
Interest Income
Derivative [Line Items]
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months		$ 513
Cash Flow Hedges \| Interest Rate Swaps
Derivative [Line Items]
Number of interest rate derivative instruments held \| derivative_instrument	16	16
Derivative, notional amount	$ 1,830,000	$ 1,830,000
Cash Flow Hedges \| Interest Rate Floor
Derivative [Line Items]
Number of interest rate derivative instruments held \| derivative_instrument	5	5
Derivative, notional amount	$ 550,000	$ 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	5
Derivative, notional amount	$ 775,000	$ 775,000