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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Credit Quality By Past Due Status (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Aged analysis of the company's loans |  |
Total Loans | $ 9,704,598 | $ 8,809,394
Interest income on nonaccrual loans | 0 | 0
Interest income on loans | 400 |
Legacy Loan |  |
Aged analysis of the company's loans |  |
Total Loans | 9,704,598 | 8,809,394
Nonaccrual | 48,687 | 29,245
Legacy Loan | Past Due 30 - 89 Days |  |
Aged analysis of the company's loans |  |
Total Loans | 48,442 | 45,244
Legacy Loan | 90+ Days Past Due and Still Accruing |  |
Aged analysis of the company's loans |  |
Total Loans | 5,886 | 4,119
Legacy Loan | Financial Asset, Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 103,015 | 78,608
Legacy Loan | Financial Asset, Not Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 9,601,583 | 8,730,786
CRE - multifamily |  |
Aged analysis of the company's loans |  |
Total Loans | 619,794 | 484,773
CRE - owner occupied |  |
Aged analysis of the company's loans |  |
Total Loans | 752,774 | 722,387
CRE - non-owner occupied |  |
Aged analysis of the company's loans |  |
Total Loans | 1,711,198 | 1,431,720
Commercial & industrial and other business loans |  |
Aged analysis of the company's loans |  |
Total Loans | 1,000,630 | 1,006,785
Business lending |  |
Aged analysis of the company's loans |  |
Total Loans | 4,084,396 | 3,645,665
Consumer mortgage |  |
Aged analysis of the company's loans |  |
Total Loans | 3,285,018 | 3,012,475
Consumer indirect |  |
Aged analysis of the company's loans |  |
Total Loans | 1,703,440 | 1,539,653
Consumer direct |  |
Aged analysis of the company's loans |  |
Total Loans | 185,229 | 177,605
Home equity |  |
Aged analysis of the company's loans |  |
Total Loans | 446,515 | 433,996
Commercial Portfolio Segment | CRE - multifamily |  |
Aged analysis of the company's loans |  |
Total Loans | 619,794 | 484,773
Commercial Portfolio Segment | CRE - multifamily | Legacy Loan |  |
Aged analysis of the company's loans |  |
Total Loans | 619,794 | 484,773
Nonaccrual | 0 | 0
Commercial Portfolio Segment | CRE - multifamily | Legacy Loan | Past Due 30 - 89 Days |  |
Aged analysis of the company's loans |  |
Total Loans | 0 | 0
Commercial Portfolio Segment | CRE - multifamily | Legacy Loan | 90+ Days Past Due and Still Accruing |  |
Aged analysis of the company's loans |  |
Total Loans | 0 | 0
Commercial Portfolio Segment | CRE - multifamily | Legacy Loan | Financial Asset, Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 0 | 0
Commercial Portfolio Segment | CRE - multifamily | Legacy Loan | Financial Asset, Not Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 619,794 | 484,773
Commercial Portfolio Segment | CRE - owner occupied |  |
Aged analysis of the company's loans |  |
Total Loans | 752,774 | 722,387
Commercial Portfolio Segment | CRE - non-owner occupied |  |
Aged analysis of the company's loans |  |
Total Loans | 1,711,198 | 1,431,720
Commercial Portfolio Segment | Commercial & industrial and other business loans |  |
Aged analysis of the company's loans |  |
Total Loans | 1,000,630 | 1,006,785
Residential Portfolio Segment | CRE - owner occupied | Legacy Loan |  |
Aged analysis of the company's loans |  |
Total Loans | 752,774 | 722,387
Nonaccrual | 1,953 | 2,977
Residential Portfolio Segment | CRE - owner occupied | Legacy Loan | Past Due 30 - 89 Days |  |
Aged analysis of the company's loans |  |
Total Loans | 1,477 | 2,332
Residential Portfolio Segment | CRE - owner occupied | Legacy Loan | 90+ Days Past Due and Still Accruing |  |
Aged analysis of the company's loans |  |
Total Loans | 0 | 0
Residential Portfolio Segment | CRE - owner occupied | Legacy Loan | Financial Asset, Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 3,430 | 5,309
Residential Portfolio Segment | CRE - owner occupied | Legacy Loan | Financial Asset, Not Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 749,344 | 717,078
Residential Portfolio Segment | Consumer mortgage |  |
Aged analysis of the company's loans |  |
Total Loans | 3,285,018 | 3,012,475
Residential Portfolio Segment | Consumer mortgage | Legacy Loan |  |
Aged analysis of the company's loans |  |
Total Loans | 3,285,018 | 3,012,475
Nonaccrual | 26,043 | 22,583
Residential Portfolio Segment | Consumer mortgage | Legacy Loan | Past Due 30 - 89 Days |  |
Aged analysis of the company's loans |  |
Total Loans | 18,434 | 13,757
Residential Portfolio Segment | Consumer mortgage | Legacy Loan | 90+ Days Past Due and Still Accruing |  |
Aged analysis of the company's loans |  |
Total Loans | 4,559 | 3,510
Residential Portfolio Segment | Consumer mortgage | Legacy Loan | Financial Asset, Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 49,036 | 39,850
Residential Portfolio Segment | Consumer mortgage | Legacy Loan | Financial Asset, Not Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 3,235,982 | 2,972,625
Residential Portfolio Segment | Home equity | Legacy Loan |  |
Aged analysis of the company's loans |  |
Total Loans | 446,515 | 433,996
Nonaccrual | 2,368 | 1,945
Residential Portfolio Segment | Home equity | Legacy Loan | Past Due 30 - 89 Days |  |
Aged analysis of the company's loans |  |
Total Loans | 3,546 | 3,595
Residential Portfolio Segment | Home equity | Legacy Loan | 90+ Days Past Due and Still Accruing |  |
Aged analysis of the company's loans |  |
Total Loans | 416 | 299
Residential Portfolio Segment | Home equity | Legacy Loan | Financial Asset, Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 6,330 | 5,839
Residential Portfolio Segment | Home equity | Legacy Loan | Financial Asset, Not Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 440,185 | 428,157
Consumer Portfolio Segment | CRE - non-owner occupied | Legacy Loan |  |
Aged analysis of the company's loans |  |
Total Loans | 1,711,198 | 1,431,720
Nonaccrual | 17,964 | 1,365
Consumer Portfolio Segment | CRE - non-owner occupied | Legacy Loan | Past Due 30 - 89 Days |  |
Aged analysis of the company's loans |  |
Total Loans | 2,311 | 5,703
Consumer Portfolio Segment | CRE - non-owner occupied | Legacy Loan | 90+ Days Past Due and Still Accruing |  |
Aged analysis of the company's loans |  |
Total Loans | 0 | 0
Consumer Portfolio Segment | CRE - non-owner occupied | Legacy Loan | Financial Asset, Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 20,275 | 7,068
Consumer Portfolio Segment | CRE - non-owner occupied | Legacy Loan | Financial Asset, Not Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 1,690,923 | 1,424,652
Consumer Portfolio Segment | Commercial & industrial and other business loans | Legacy Loan |  |
Aged analysis of the company's loans |  |
Total Loans | 1,000,630 | 1,006,785
Nonaccrual | 336 | 347
Consumer Portfolio Segment | Commercial & industrial and other business loans | Legacy Loan | Past Due 30 - 89 Days |  |
Aged analysis of the company's loans |  |
Total Loans | 880 | 1,783
Consumer Portfolio Segment | Commercial & industrial and other business loans | Legacy Loan | 90+ Days Past Due and Still Accruing |  |
Aged analysis of the company's loans |  |
Total Loans | 0 | 0
Consumer Portfolio Segment | Commercial & industrial and other business loans | Legacy Loan | Financial Asset, Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 1,216 | 2,130
Consumer Portfolio Segment | Commercial & industrial and other business loans | Legacy Loan | Financial Asset, Not Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 999,414 | 1,004,655
Consumer Portfolio Segment | Consumer indirect |  |
Aged analysis of the company's loans |  |
Total Loans | 1,703,440 | 1,539,653
Consumer Portfolio Segment | Consumer indirect | Legacy Loan |  |
Aged analysis of the company's loans |  |
Total Loans | 1,703,440 | 1,539,653
Nonaccrual | 0 | 0
Consumer Portfolio Segment | Consumer indirect | Legacy Loan | Past Due 30 - 89 Days |  |
Aged analysis of the company's loans |  |
Total Loans | 20,215 | 16,767
Consumer Portfolio Segment | Consumer indirect | Legacy Loan | 90+ Days Past Due and Still Accruing |  |
Aged analysis of the company's loans |  |
Total Loans | 776 | 178
Consumer Portfolio Segment | Consumer indirect | Legacy Loan | Financial Asset, Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 20,991 | 16,945
Consumer Portfolio Segment | Consumer indirect | Legacy Loan | Financial Asset, Not Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 1,682,449 | 1,522,708
Consumer Portfolio Segment | Consumer direct |  |
Aged analysis of the company's loans |  |
Total Loans | 185,229 | 177,605
Consumer Portfolio Segment | Consumer direct | Legacy Loan |  |
Aged analysis of the company's loans |  |
Total Loans | 185,229 | 177,605
Nonaccrual | 23 | 28
Consumer Portfolio Segment | Consumer direct | Legacy Loan | Past Due 30 - 89 Days |  |
Aged analysis of the company's loans |  |
Total Loans | 1,579 | 1,307
Consumer Portfolio Segment | Consumer direct | Legacy Loan | 90+ Days Past Due and Still Accruing |  |
Aged analysis of the company's loans |  |
Total Loans | 135 | 132
Consumer Portfolio Segment | Consumer direct | Legacy Loan | Financial Asset, Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 1,737 | 1,467
Consumer Portfolio Segment | Consumer direct | Legacy Loan | Financial Asset, Not Past Due |  |
Aged analysis of the company's loans |  |
Total Loans | 183,492 | 176,138
Consumer Portfolio Segment | Home equity |  |
Aged analysis of the company's loans |  |
Total Loans | $ 446,515 | $ 433,996

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