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LOANS AND CREDIT QUALITY - Gross Charge-offs by Year and Type (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing receivable, year one, Gross charge-offs | $ 0 |  | $ 0
Financing receivable, year two, Gross charge-offs | 0 |  | (106)
Financing receivable, year three, Gross charge-offs | (2) |  | (206)
Financing receivable, year four, Gross charge-offs | 0 |  | 0
Financing receivable, year five, Gross charge-offs | 0 |  | (1,136)
Financing receivable, prior to year five, Gross charge-offs, net | (1,081) |  | 291
Revolving | (22) |  | (174)
Revolving-term | 0 |  | (50)
Charge-offs | (1,105) | $ (683) | (1,381)
Commercial loans | Commercial business |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing receivable, year one, Gross charge-offs | 0 |  | 0
Financing receivable, year two, Gross charge-offs | 0 |  | 0
Financing receivable, year three, Gross charge-offs | 0 |  | (184)
Financing receivable, year four, Gross charge-offs | 0 |  | 0
Financing receivable, year five, Gross charge-offs | 0 |  | (1,136)
Financing receivable, prior to year five, Gross charge-offs, net | (1,081) |  | 295
Revolving, net | 0 |  | 13
Revolving-term | 0 |  | (50)
Charge-offs | (1,081) | (633) | (1,062)
Consumer loans |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Charge-offs | (24) | (50) |
Consumer loans | Single family |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Charge-offs | 0 | 0 |
Consumer loans | Home equity and other |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing receivable, year one, Gross charge-offs | 0 |  | 0
Financing receivable, year two, Gross charge-offs | 0 |  | (106)
Financing receivable, year three, Gross charge-offs | (2) |  | (22)
Financing receivable, year four, Gross charge-offs | 0 |  | 0
Financing receivable, year five, Gross charge-offs | 0 |  | 0
Financing receivable, prior to year five, Gross charge-offs | 0 |  | (4)
Revolving | (22) |  | (187)
Revolving-term | 0 |  | 0
Charge-offs | $ (24) | $ (50) | $ (319)

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- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. 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 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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