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REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Jan. 01, 2020
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |  |  |
One-time charge associated with FDIC implementation of special assessment | $ 7,400 |  | $ 7,400 |  |
FDIC deposit insurance | 2,316 | $ 2,143 | 5,418 | $ 4,276 |
Commercial And Financial Standby Letters Of Credit [Member] |  |  |  |  |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |  |  |
Commitments to extend credit |  |  | 80,500 |  |
Commitments To Extend Credit [Member] |  |  |  |  |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |  |  |
Commitments to extend credit |  |  | 2,100,000 |  |
Commitments To Extend Credit [Member] | Credit Card [Member] |  |  |  |  |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |  |  |
Commitments to extend credit |  |  | 900,000 |  |
FDIC Special Assessment [Member] |  |  |  |  |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |  |  |
FDIC deposit insurance | $ 200 |  | $ 1,100 |  |
ASU 2016-13 |  |  |  |  |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |  |  |
Percentage Of Increase In ACL Adjusted In Capital Measures | 25.00% |  | 25.00% |  | 25.00%
CECL, amount excluded to be phased-on during after two years | $ 16,200 |  | $ 16,200 |  |
ASU 2016-13 | Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member] |  |  |  |  |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |  |  |
Cumulative Effect Of New Accounting Principle In Period Of Adoption 1 |  |  |  |  | $ (48,600)
Basel III [Member] |  |  |  |  |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |  |  |
Capital Conservation Buffer | 2.50% |  | 2.50% |  |

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