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DEBT SECURITIES - Investments Securities Held to Maturity (Securities in continous unrealized loss position) (Detail) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Schedule Of Held To Maturity Securities [Line Items] |  |
HTM Fair Value Less than 12 months | $ 260,106 |
HTM Unrealized Losses Less than 12 months | 11,721 |
HTM Fair Value 12 months or more | 98,797 |
HTM Unrealized Losses 12 months or more | 2,769 |
HTM Fair Value | 358,903 |
HTM Unrealized Losses | 14,490 |
FHLMC [Member] | Mortgage Backed Securities [Member] |  |
Schedule Of Held To Maturity Securities [Line Items] |  |
HTM Fair Value Less than 12 months | 39,171 |
HTM Unrealized Losses Less than 12 months | 1,634 |
HTM Fair Value 12 months or more | 0 |
HTM Unrealized Losses 12 months or more | 0 |
HTM Fair Value | 39,171 |
HTM Unrealized Losses | 1,634 |
GNMA [Member] | Mortgage Backed Securities [Member] |  |
Schedule Of Held To Maturity Securities [Line Items] |  |
HTM Fair Value Less than 12 months | 18,188 |
HTM Unrealized Losses Less than 12 months | 943 |
HTM Fair Value 12 months or more | 0 |
HTM Unrealized Losses 12 months or more | 0 |
HTM Fair Value | 18,188 |
HTM Unrealized Losses | 943 |
FNMA [Member] | Mortgage Backed Securities [Member] |  |
Schedule Of Held To Maturity Securities [Line Items] |  |
HTM Fair Value Less than 12 months | 78,417 |
HTM Unrealized Losses Less than 12 months | 3,551 |
HTM Fair Value 12 months or more | 0 |
HTM Unrealized Losses 12 months or more | 0 |
HTM Fair Value | 78,417 |
HTM Unrealized Losses | 3,551 |
Collateralized Mortgage Obligations [Member] | Mortgage Backed Securities [Member] |  |
Schedule Of Held To Maturity Securities [Line Items] |  |
HTM Fair Value Less than 12 months | 124,330 |
HTM Unrealized Losses Less than 12 months | 5,593 |
HTM Fair Value 12 months or more | 0 |
HTM Unrealized Losses 12 months or more | 0 |
HTM Fair Value | 124,330 |
HTM Unrealized Losses | 5,593 |
Puerto Rico [Member] | Municipal Bonds [Member] |  |
Schedule Of Held To Maturity Securities [Line Items] |  |
HTM Fair Value Less than 12 months | 0 | $ 0
HTM Unrealized Losses Less than 12 months | 0 | 0
HTM Fair Value 12 months or more | 98,797 | 140,732
HTM Unrealized Losses 12 months or more | 2,769 | 13,072
HTM Fair Value | 98,797 | 140,732
HTM Unrealized Losses | $ 2,769 | $ 13,072

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