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SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES - Debt Securities, Held to Maturity, Allowance for Credit Losses Rollforward (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance | $ 94 | $ 130 | $ 105 | $ 104
Provision/(benefit) for credit losses | 1 | (5) | (10) | 21
Ending balance | 95 | 125 | 95 | 125
Municipal bonds and obligations |  |  |  |
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance | 66 | 90 | 70 | 64
Provision/(benefit) for credit losses | 1 | (3) | (3) | 23
Ending balance | 67 | 87 | 67 | 87
Tax advantaged economic development bonds |  |  |  |
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward] |  |  |  |
Beginning balance | 28 | 40 | 35 | 40
Provision/(benefit) for credit losses | 0 | (2) | (7) | (2)
Ending balance | $ 28 | $ 38 | $ 28 | $ 38

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- Definition Amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of expense (reversal of expense) for expected credit loss on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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