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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2024 USD ($) derivative_instrument	Dec. 31, 2023 USD ($)	Dec. 31, 2024 USD ($) derivative_instrument	Dec. 31, 2023 USD ($)	Jun. 30, 2024 USD ($)
Derivative [Line Items]
Amount of gain reclassified from accumulated other comprehensive income to interest expense	$ 6,673	$ 9,363	$ 15,366	$ 18,834
Pipeline of loans held-for-sale	4,600		4,600		$ 16,000
Interest Expense
Derivative [Line Items]
Amount of gain reclassified from accumulated other comprehensive income to interest expense	$ 6,700		15,400
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months			18,200
Interest Income
Derivative [Line Items]
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months			$ 676
Cash Flow Hedges \| Interest Rate Swaps
Derivative [Line Items]
Number of interest rate derivative instruments held \| derivative_instrument	13		13
Derivative, notional amount	$ 1,730,000		$ 1,730,000
Cash Flow Hedges \| Interest Rate Floor
Derivative [Line Items]
Number of interest rate derivative instruments held \| derivative_instrument	6		6
Derivative, notional amount	$ 400,000		$ 400,000
Fair Value Hedging \| Interest Rate Swaps
Derivative [Line Items]
Number of interest rate derivative instruments held \| derivative_instrument	1		1
Derivative, notional amount	$ 100,000		$ 100,000
Fair Value Hedging \| Interest Rate Swaps \| Fixed Rate Residential Mortgage
Derivative [Line Items]
Number of interest rate derivative instruments held \| derivative_instrument	4		4
Derivative, notional amount	$ 625,000		$ 625,000