LOANS - Narrative (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held-for-dale, nonaccrual	$ 0.9		$ 1.2
Loans held for sale, fair value, nonaccrual status	$ 0.6		$ 0.8
Concentration risk, percentage	100.00%		100.00%
Amount outstanding on loans purchased	$ 2,700.0	$ 1,800.0
Amount outstanding on loans securitized	874.6	381.2
Top Five Originators
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount outstanding on loans originated	$ 1,700.0	$ 1,200.0
Financing Receivable Benchmark \| Loan Originations Risk \| Top Five Originators
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	76.30%	73.70%
Financing Receivable Benchmark \| Customer Concentration Risk \| Top Five Loan Purchasers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	79.10%	63.20%
Revenue Benchmark \| Loan Originations Risk \| Top Five Originators
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	15.00%	8.20%
Revenue Benchmark \| Customer Concentration Risk \| Top Five Loan Purchasers
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	26.50%	17.70%

Financing Receivable, Held-for-Sale, Nonaccrual

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- Definition

Principal Amount Outstanding On Loans Originated

+ References

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- Definition

Principal Amount Outstanding On Loans Purchased

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

This item represents the aggregate fair value of loans held as assets that are in nonaccrual status for which the fair value option has been elected, if the entity's policy is to recognize interest income separately from other changes in fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

This is the principal amount outstanding for securitized loans only (across all types of loans).

+ References

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