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SECURITIES - Securities Available for Sale (Details) - USD ($)	Sep. 30, 2024	Jun. 30, 2024
Schedule of Available for Sale Securities [Line Items]
Amortized Cost	$ 1,177,595,000	$ 1,203,506,000
Gross Unrealized Gains	3,328,000	2,920,000
Gross Unrealized Losses	110,112,000	133,593,000
Allowance for Credit Losses	0	0
Fair Value	1,070,811,000	1,072,833,000
Debt securities
Schedule of Available for Sale Securities [Line Items]
Amortized Cost	601,049,000	618,179,000
Gross Unrealized Gains	2,563,000	2,855,000
Gross Unrealized Losses	18,214,000	19,254,000
Allowance for Credit Losses	0	0
Fair Value	585,398,000	601,780,000
Asset-backed securities
Schedule of Available for Sale Securities [Line Items]
Amortized Cost	74,136,000	80,305,000
Gross Unrealized Gains	145,000	217,000
Gross Unrealized Losses	190,000	82,000
Allowance for Credit Losses	0	0
Fair Value	74,091,000	80,440,000
Collateralized loan obligations
Schedule of Available for Sale Securities [Line Items]
Amortized Cost	376,041,000	386,983,000
Gross Unrealized Gains	2,317,000	2,574,000
Gross Unrealized Losses	25,000	14,000
Allowance for Credit Losses	0	0
Fair Value	378,333,000	389,543,000
Corporate bonds
Schedule of Available for Sale Securities [Line Items]
Amortized Cost	150,872,000	150,891,000
Gross Unrealized Gains	101,000	64,000
Gross Unrealized Losses	17,999,000	19,158,000
Allowance for Credit Losses	0	0
Fair Value	132,974,000	131,797,000
Mortgage-backed securities
Schedule of Available for Sale Securities [Line Items]
Amortized Cost	576,546,000	585,327,000
Gross Unrealized Gains	765,000	65,000
Gross Unrealized Losses	91,898,000	114,339,000
Allowance for Credit Losses	0	0
Fair Value	485,413,000	471,053,000
Residential pass-through securities
Schedule of Available for Sale Securities [Line Items]
Amortized Cost	421,377,000	429,473,000
Gross Unrealized Gains	20,000	2,000
Gross Unrealized Losses	73,546,000	92,211,000
Allowance for Credit Losses	0	0
Fair Value	347,851,000	337,264,000
Commercial pass-through securities
Schedule of Available for Sale Securities [Line Items]
Amortized Cost	155,169,000	155,854,000
Gross Unrealized Gains	745,000	63,000
Gross Unrealized Losses	18,352,000	22,128,000
Allowance for Credit Losses	0	0
Fair Value	$ 137,562,000	$ 133,789,000

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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