DERIVATIVES - Offsetting (Details) - Not designated as hedging instruments - USD ($) $ in Millions	Dec. 31, 2024	Jun. 30, 2024	Jun. 30, 2023
Interest rate swap
DERIVATIVES
Derivative notional amount	$ 376.6	$ 406.8	$ 455.8
Interest rate swap - Commercial borrowers
DERIVATIVES
Derivative notional amount	188.3	203.4	227.9
Interest rate swap - Third party counterparties
DERIVATIVES
Derivative notional amount	$ 188.3	$ 203.4	$ 227.9

Nominal or face amount used to calculate payment on derivative.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant