BORROWINGS - Advances from the Federal Home Loan Bank (FHLB) - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Federal Home Loan Bank, Advances [Line Items]
Average balance during the year	$ 500.1	$ 541.0
Estimated value of U.S. government-sponsored agencies' obligations and U.S. agencies MBS pledged as collateral amount	438.5	454.0
Additional capacity on credit facility based on collateral pledged	950.9
Maximum [Member]
Federal Home Loan Bank, Advances [Line Items]
Maximum aggregate balance of advances from the FHLB outstanding at any month-end during period	500.0	925.0
Federal Home Loan Bank Advances [Member] \| Asset Pledged as Collateral [Member]
Federal Home Loan Bank, Advances [Line Items]
Loans pledged including collateral	$ 1,200.0	$ 1,200.0

Estimated value of U.S. government-sponsored agencies' obligations and U.S. agencies MBS pledged as collateral amount.

No definition available.

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- Definition

The estimated value (including the collateral discount) as of the balance sheet date of loans that have been pledged as collateral for borrowings.

+ References

No definition available.

+ Details

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- Definition

The calculated average balance outstanding for the year for all Federal Home Loan Bank advances as of the Balance Sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13)(3)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

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- Definition

The maximum balance outstanding at any month end during the period as of the Balance Sheet date.

+ References

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- Definition

Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13)(3)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 470
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478878/942-470-45-1

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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

No definition available.

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