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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Additional Information (Details)	3 Months Ended
	Sep. 30, 2023 USD ($) derivativeInstrument	Sep. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)
Derivative [Line Items]
Reclassifications to interest expense	$ 9,471,000	$ 1,620,000
Derivative liability	0
Pipeline of loans held-for-sale	12,800,000		$ 11,700,000
Interest Expense
Derivative [Line Items]
Reclassifications to interest expense	(9,500,000)
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months	33,500,000
Interest Income
Derivative [Line Items]
Estimated cash flow hedge gain (loss) to be reclassified in next twelve months	$ 364,000
Cash Flow Hedges \| Interest Rate Swaps
Derivative [Line Items]
Number of interest rate derivative instruments held \| derivativeInstrument	13
Derivative, notional amount	$ 1,350,000,000
Cash Flow Hedges \| Interest Rate Floor
Derivative [Line Items]
Number of interest rate derivative instruments held \| derivativeInstrument	1
Derivative, notional amount	$ 100,000,000
Fair Value Hedging \| Interest Rate Swaps
Derivative [Line Items]
Number of interest rate derivative instruments held \| derivativeInstrument	5
Derivative, notional amount	$ 675,000,000