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PORTFOLIO LOANS - Schedule of ACL and Amortized Cost of Portfolio Loans by Loan Category (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | --- | --- | --- | --- | ---
Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | $ 7,804,368 |  | $ 7,647,883 |  |  |
Individually Evaluated for Impairment | 4,729 |  | 3,151 |  |  |
Total | 7,809,097 |  | 7,651,034 |  |  |
ACL Attributed to Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | 83,118 |  | 90,845 |  |  |
Individually Evaluated for Impairment | 1,863 |  | 895 |  |  |
Total | 84,981 | $ 85,226 | 91,740 | $ 91,710 | $ 91,639 | $ 91,608
Commercial loans |  |  |  |  |  |
Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | 5,626,552 |  | 5,631,983 |  |  |
Individually Evaluated for Impairment | 4,729 |  | 3,065 |  |  |
Total | 5,631,281 |  | 5,635,048 |  |  |
ACL Attributed to Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | 56,652 |  | 61,014 |  |  |
Individually Evaluated for Impairment | 1,863 |  | 870 |  |  |
Total | 58,515 |  | 61,884 |  |  |
Commercial loans | C&I and other commercial |  |  |  |  |  |
Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | 1,873,260 |  | 1,833,624 |  |  |
Individually Evaluated for Impairment | 4,237 |  | 2,370 |  |  |
Total | 1,877,497 |  | 1,835,994 |  |  |
ACL Attributed to Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | 19,146 |  | 20,471 |  |  |
Individually Evaluated for Impairment | 1,863 |  | 785 |  |  |
Total | 21,009 | 20,286 | 21,256 | 22,633 | 24,510 | 23,860
Commercial loans | Commercial and Retail Real Estate |  |  |  |  |  |
Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | 3,355,315 |  | 3,336,642 |  |  |
Individually Evaluated for Impairment | 492 |  | 695 |  |  |
Total | 3,355,807 |  | 3,337,337 |  |  |
ACL Attributed to Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | 33,735 |  | 35,380 |  |  |
Individually Evaluated for Impairment | 0 |  | 85 |  |  |
Total | 33,735 | 35,104 | 35,465 | 34,691 | 33,656 | 38,299
Commercial loans | Real estate construction |  |  |  |  |  |
Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | 397,977 |  | 461,717 |  |  |
Individually Evaluated for Impairment | 0 |  | 0 |  |  |
Total | 397,977 |  | 461,717 |  |  |
ACL Attributed to Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | 3,771 |  | 5,163 |  |  |
Individually Evaluated for Impairment | 0 |  | 0 |  |  |
Total | 3,771 | 3,722 | 5,163 | 5,206 | 5,071 | 6,457
Retail loans |  |  |  |  |  |
Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | 2,177,816 |  | 2,015,900 |  |  |
Individually Evaluated for Impairment | 0 |  | 86 |  |  |
Total | 2,177,816 |  | 2,015,986 |  |  |
ACL Attributed to Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | 26,466 |  | 29,831 |  |  |
Individually Evaluated for Impairment | 0 |  | 25 |  |  |
Total | 26,466 |  | 29,856 |  |  |
Retail loans | Commercial and Retail Real Estate |  |  |  |  |  |
Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | 1,708,771 |  | 1,720,369 |  |  |
Individually Evaluated for Impairment | 0 |  | 86 |  |  |
Total | 1,708,771 |  | 1,720,455 |  |  |
ACL Attributed to Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | 23,979 |  | 26,273 |  |  |
Individually Evaluated for Impairment | 0 |  | 25 |  |  |
Total | 23,979 | 23,729 | 26,298 | 25,333 | 24,675 | 18,193
Retail loans | Retail other |  |  |  |  |  |
Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | 469,045 |  | 295,531 |  |  |
Individually Evaluated for Impairment | 0 |  | 0 |  |  |
Total | 469,045 |  | 295,531 |  |  |
ACL Attributed to Portfolio Loans |  |  |  |  |  |
Collectively Evaluated for Impairment | 2,487 |  | 3,558 |  |  |
Individually Evaluated for Impairment | 0 |  | 0 |  |  |
Total | $ 2,487 | $ 2,385 | $ 3,558 | $ 3,847 | $ 3,727 | $ 4,799

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