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PORTFOLIO LOANS - Narrative (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Net deferred loan origination (fees) costs | $ 13,400,000 |  | $ 13,500,000
Net accretable purchase accounting adjustments | (4,300,000) |  | (4,500,000)
Gross interest income that would have been recorded if impaired loans had been current | 300,000 | $ 400,000 |
Amount of interest collected and recognized on a cash basis | 0 | 0 |
Collateral dependent loans secured by real estate or business assets | 14,200,000 |  | $ 6,100,000
Loans in the process of foreclosure | 900,000 |  |
Retail real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans purchased | 0 | $ 0 |
Commercial real estate | Maximum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Limit where loans are processed through an expedited underwriting process | 1,000,000 |  |
Total commercial loans | Watch |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Limit above which loans are annually reviewed | 1,000,000 |  |
Total commercial loans | Special Mention |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Limit above which loans are annually reviewed | $ 350,000 |  |

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- Definition Amount of increase (decrease) of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481906/310-30-15-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481696/310-30-50-2 + Details
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- Definition Amount of increase in financing receivable from purchase. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-11 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
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