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PORTFOLIO LOANS - Summary of risk grades segregated by category of portfolio loans (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | $ 7,588,077 | $ 7,651,034
Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 6,663,672 | 6,736,067
Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 722,802 | 747,122
Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 96,308 | 96,057
Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 87,830 | 64,347
Substandard Non-accrual |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 17,465 | 7,441
Total commercial loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 5,606,241 | 5,635,048
Total commercial loans | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 4,698,629 | 4,737,796
Total commercial loans | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 713,431 | 735,978
Total commercial loans | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 95,386 | 95,033
Total commercial loans | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 85,141 | 62,552
Total commercial loans | Substandard Non-accrual |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 13,654 | 3,689
C&I and other commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 1,828,711 | 1,835,994
C&I and other commercial | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 1,491,166 | 1,462,755
C&I and other commercial | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 243,635 | 296,416
C&I and other commercial | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 37,711 | 46,488
C&I and other commercial | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 42,853 | 27,733
C&I and other commercial | Substandard Non-accrual |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 13,346 | 2,602
Commercial real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 3,331,670 | 3,337,337
Commercial real estate | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 2,797,374 | 2,827,030
Commercial real estate | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 447,313 | 431,427
Commercial real estate | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 49,932 | 48,545
Commercial real estate | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 36,987 | 29,492
Commercial real estate | Substandard Non-accrual |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 64 | 843
Real estate construction |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 445,860 | 461,717
Real estate construction | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 410,089 | 448,011
Real estate construction | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 22,483 | 8,135
Real estate construction | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 7,743 | 0
Real estate construction | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 5,301 | 5,327
Real estate construction | Substandard Non-accrual |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 244 | 244
Total retail loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 1,981,836 | 2,015,986
Total retail loans | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 1,965,043 | 1,998,271
Total retail loans | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 9,371 | 11,144
Total retail loans | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 922 | 1,024
Total retail loans | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 2,689 | 1,795
Total retail loans | Substandard Non-accrual |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 3,811 | 3,752
Retail real estate |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 1,708,663 | 1,720,455
Retail real estate | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 1,692,013 | 1,702,897
Retail real estate | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 9,371 | 11,144
Retail real estate | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 922 | 1,024
Retail real estate | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 2,689 | 1,795
Retail real estate | Substandard Non-accrual |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 3,668 | 3,595
Retail other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 273,173 | 295,531
Retail other | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 273,030 | 295,374
Retail other | Watch |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 0 | 0
Retail other | Special Mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 0 | 0
Retail other | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | 0 | 0
Retail other | Substandard Non-accrual |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Commercial loans | $ 143 | $ 157

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