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REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Disaggregation Of Revenue [Line Items] |  |
Net interest income (loss) | $ 196,520 | $ 200,885
Noninterest Income | 33,983 | 32,518
Total Revenues (Loss) | 230,503 | 233,403
Other non-interest income | 4,620 | 4,400
Service charges and fees on deposit accounts [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 9,662 | 9,541
Insurance commissions [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 5,507 | 4,847
Card and processing income [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 11,312 | 10,918
Other service charges and fees [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 2,739 | 3,094
Not in scope of Topic 606 [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 4,763 | 4,118
Mortgage Banking Segment [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Net interest income (loss) | 15,823 | 21,788
Noninterest Income | 3,019 | 3,074
Total Revenues (Loss) | 18,842 | 24,862
Mortgage Banking Segment [Member] | Service charges and fees on deposit accounts [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 0 | 0
Mortgage Banking Segment [Member] | Insurance commissions [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 0 | 0
Mortgage Banking Segment [Member] | Card and processing income [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 0 | 0
Mortgage Banking Segment [Member] | Other service charges and fees [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 58 | 161
Mortgage Banking Segment [Member] | Not in scope of Topic 606 [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 2,961 | 2,913
Consumer Retail Banking Segment [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Net interest income (loss) | 148,947 | 137,744
Noninterest Income | 23,406 | 22,034
Total Revenues (Loss) | 172,353 | 159,778
Consumer Retail Banking Segment [Member] | Service charges and fees on deposit accounts [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 5,281 | 5,486
Consumer Retail Banking Segment [Member] | Insurance commissions [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 5,234 | 4,640
Consumer Retail Banking Segment [Member] | Card and processing income [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 10,238 | 9,901
Consumer Retail Banking Segment [Member] | Other service charges and fees [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 1,043 | 1,152
Consumer Retail Banking Segment [Member] | Not in scope of Topic 606 [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 1,610 | 855
Commercial And Corporate Segment [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Net interest income (loss) | 14,928 | 14,940
Noninterest Income | 4,501 | 4,175
Total Revenues (Loss) | 19,429 | 19,115
Commercial And Corporate Segment [Member] | Service charges and fees on deposit accounts [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 3,492 | 3,154
Commercial And Corporate Segment [Member] | Insurance commissions [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 0 | 0
Commercial And Corporate Segment [Member] | Card and processing income [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 24 | 22
Commercial And Corporate Segment [Member] | Other service charges and fees [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 876 | 854
Commercial And Corporate Segment [Member] | Not in scope of Topic 606 [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 109 | 145
Treasury And Investments Segment [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Net interest income (loss) | (6,532) | (658)
Noninterest Income | 83 | 160
Total Revenues (Loss) | (6,449) | (498)
Treasury And Investments Segment [Member] | Service charges and fees on deposit accounts [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 0 | 0
Treasury And Investments Segment [Member] | Insurance commissions [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 0 | 0
Treasury And Investments Segment [Member] | Card and processing income [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 0 | 0
Treasury And Investments Segment [Member] | Other service charges and fees [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 0 | 0
Treasury And Investments Segment [Member] | Not in scope of Topic 606 [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 83 | 160
United States Operations Segment [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Net interest income (loss) | 18,248 | 20,930
Noninterest Income | 901 | 847
Total Revenues (Loss) | 19,149 | 21,777
United States Operations Segment [Member] | Service charges and fees on deposit accounts [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 148 | 165
United States Operations Segment [Member] | Insurance commissions [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 56 | 28
United States Operations Segment [Member] | Card and processing income [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 78 | 31
United States Operations Segment [Member] | Other service charges and fees [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 621 | 583
United States Operations Segment [Member] | Not in scope of Topic 606 [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | (2) | 40
Virgin Islands Operations Segment [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Net interest income (loss) | 5,106 | 6,141
Noninterest Income | 2,073 | 2,228
Total Revenues (Loss) | 7,179 | 8,369
Virgin Islands Operations Segment [Member] | Service charges and fees on deposit accounts [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 741 | 736
Virgin Islands Operations Segment [Member] | Insurance commissions [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 217 | 179
Virgin Islands Operations Segment [Member] | Card and processing income [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 972 | 964
Virgin Islands Operations Segment [Member] | Other service charges and fees [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | 141 | 344
Virgin Islands Operations Segment [Member] | Not in scope of Topic 606 [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Noninterest Income | $ 2 | $ 5

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