FAIR VALUE - Narrative (Details) - Significant Unobservable Inputs (Level 3) $ in Millions	3 Months Ended	9 Months Ended
Jun. 30, 2025 investment borrower	Sep. 30, 2025 USD ($) borrower	Sep. 30, 2026 USD ($) redemption
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of corporate bonds transferred out of Level 2 into Level 3 \| borrower	7	7
Number of corporate bonds transferred out of Level 3 into Level 2 \| investment	13
Partial redemption			1
Full redemption			1
Corporate Subordinated Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Repurchase amount \| $		$ 1.0	$ 1.7

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 815
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Reference 2: http://www.xbrl.org/2003/role/exampleRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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