GOVERNMENT AND GOVERNMENT-BACKED SECURITIES - Narrative (Details) - Agency $ in Millions	Sep. 30, 2025 USD ($)
Debt Securities, Available-for-sale [Line Items]
Face amount of securities	$ 535.9
Face amount of securities purchased, unsettled	$ 535.0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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+ Details