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DEBT SECURITIES - ACL on Debt Securities Held-To-Maturity (Detail) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Sep. 01, 2020 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items] |  |  |  |
Beginning Balance |  | $ 8,571 |  |
Ending Balance |  | 8,286 | $ 8,571 |
Municipal Bonds [Member] | PUERTO RICO |  |  |  |
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items] |  |  |  |
Beginning Balance |  | 8,571 | 8,845 | $ 0
Initial allowance on PCD debt securities | $ 1,269 | 0 | 0 |
Provision for credit loss expense |  | (285) | (274) | (558)
Ending Balance |  | 8,286 | 8,571 | 8,845
Municipal Bonds [Member] | PUERTO RICO | ASC 326 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |  |
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items] |  |  |  |
Beginning Balance |  | $ 0 | 0 |
Ending Balance |  |  | $ 0 | $ 0

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- Definition Amount of allowance for credit loss for 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 (a) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aaa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -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 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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- Definition Amount of allowance for credit loss at acquisition date of investment in debt security measured at amortized cost (held-to-maturity), purchased with credit deterioration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 19 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919265-210447 + Details
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