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DEPOSITS AND RELATED INTEREST - Narratives (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Deposits [Line Items] |  |  |
Weighted-average interest rate on total interest-bearing | 1.03% | 0.31% |
Unplanned overdrafts of demand deposits that were reclassified as loans | $ 1,700 | $ 1,600 |
Pre-arranged overdrafts lines of credit | 24,500 | 24,200 |
Unamortized broker placement fees | 300 | 200 |
Market value of uninsured portions collateralized by securities and loans | 2,700,000 | 3,300,000 |
Amortized cost of uninsured portions collateralized by securities and loans | 3,100,000 | 3,400,000 |
Accretion Of Premium From Acquisition | 500 | 1,300 | $ 1,000
Time deposits in denomnations of $250,000 or more | 1,000,000 | 1,000,000 |
Deposits | 16,143,467 | 17,784,894 |
Amortization of broker placement fees | 106 | 218 | 537
Federal Home Loan Bank [Member] | Standby letters of credit [Member] [Member] | Asset Pledged as Collateral [Member] |  |  |
Deposits [Line Items] |  |  |
Credit facility amount | 200,000 |  |
Government [Member] |  |  |
Deposits [Line Items] |  |  |
Deposits | 2,800,000 | 3,300,000 |
Puerto Rico [Member] |  |  |
Deposits [Line Items] |  |  |
Deposits | 12,933,570 | 14,113,874 | 12,338,934
Puerto Rico [Member] | Government [Member] |  |  |
Deposits [Line Items] |  |  |
Deposits | 2,300,000 | 2,700,000 |
United States [Member] |  |  |
Deposits [Line Items] |  |  |
Deposits | 1,623,725 | 1,928,749 | 1,622,481
United States [Member] | Government [Member] |  |  |
Deposits [Line Items] |  |  |
Deposits | 11,600 | 9,600 |
Virgin Islands [Member] |  |  |
Deposits [Line Items] |  |  |
Deposits | 1,586,172 | 1,742,271 | $ 1,355,968
Virgin Islands [Member] | Government [Member] |  |  |
Deposits [Line Items] |  |  |
Deposits | $ 442,800 | $ 568,400 |

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- Definition Represents the amount of accretion of premiums related to time deposits assumed in the Doral bank transaction in 2015. + References No definition available. + Details
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- Definition Market value amount of uninsured portions collateralized by securities and loans. + References No definition available. + Details
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- Definition unamortized amount of costs for brokerage fees paid for issuance of brokered CDs. + References No definition available. + Details
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