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ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY INFORMATION - Schedule of Allowance for Loan Losses and Loan Balances (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Allowance for credit losses |  |  |  |  |
Beginning balance | $ 198,253 | $ 171,869 | $ 186,126 | $ 151,861 | $ 151,861
Charge-offs | (23,101) | (16,847) | (52,532) | (46,387) |
Recoveries | 3,916 | 2,552 | 10,521 | 7,257 |
Provision (release) | 18,422 | 18,414 | 53,375 | 63,257 |
Ending balance | 197,490 | 175,988 | 197,490 | 175,988 | 186,126
Period-end allowance allocated to: |  |  |  |  |
Loans evaluated on an individual basis | 8,529 | 2,815 | 8,529 | 2,815 |
Loans evaluated on a collective basis | 188,961 | 173,173 | 188,961 | 173,173 |
Period-end loan balances: |  |  |  |  |
Loans evaluated on an individual basis | 93,617 | 63,179 | 93,617 | 63,179 |
Loans evaluated on a collective basis | 13,225,371 | 12,612,442 | 13,225,371 | 12,612,442 |
Ending balance | 13,318,988 | 12,675,621 | 13,318,988 | 12,675,621 | 12,766,518
Reverse mortgage, fair value | 3,200 | 2,800 | 3,200 | 2,800 | 2,800
Commercial | Commercial and industrial |  |  |  |  |
Allowance for credit losses |  |  |  |  |
Beginning balance | 56,516 | 52,400 | 49,394 | 49,526 | 49,526
Charge-offs | (11,277) | (7,153) | (13,659) | (20,169) | (26,653)
Recoveries | 2,481 | 1,640 | 5,983 | 4,155 |
Provision (release) | 9,075 | 4,791 | 15,077 | 18,166 |
Ending balance | 56,795 | 51,678 | 56,795 | 51,678 | 49,394
Period-end allowance allocated to: |  |  |  |  |
Loans evaluated on an individual basis | 8,529 | 1,054 | 8,529 | 1,054 |
Loans evaluated on a collective basis | 48,266 | 50,624 | 48,266 | 50,624 |
Period-end loan balances: |  |  |  |  |
Loans evaluated on an individual basis | 64,972 | 26,355 | 64,972 | 26,355 |
Loans evaluated on a collective basis | 2,574,294 | 2,617,684 | 2,574,294 | 2,617,684 |
Ending balance | 2,639,266 | 2,644,039 | 2,639,266 | 2,644,039 | 2,540,070
Commercial | Owner-occupied commercial |  |  |  |  |
Allowance for credit losses |  |  |  |  |
Beginning balance | 9,668 | 6,335 | 10,719 | 6,019 | 6,019
Charge-offs | (177) | 0 | (177) | (184) | (184)
Recoveries | 4 | 14 | 209 | 50 |
Provision (release) | 292 | 1,501 | (964) | 1,965 |
Ending balance | 9,787 | 7,850 | 9,787 | 7,850 | 10,719
Period-end allowance allocated to: |  |  |  |  |
Loans evaluated on an individual basis | 0 | 161 | 0 | 161 |
Loans evaluated on a collective basis | 9,787 | 7,689 | 9,787 | 7,689 |
Period-end loan balances: |  |  |  |  |
Loans evaluated on an individual basis | 6,465 | 16,442 | 6,465 | 16,442 |
Loans evaluated on a collective basis | 1,997,257 | 1,907,729 | 1,997,257 | 1,907,729 |
Ending balance | 2,003,722 | 1,924,171 | 2,003,722 | 1,924,171 | 1,886,087
Commercial | Commercial mortgages |  |  |  |  |
Allowance for credit losses |  |  |  |  |
Beginning balance | 46,831 | 31,937 | 36,055 | 21,473 | 21,473
Charge-offs | (205) | (300) | (5,137) | (300) | (300)
Recoveries | 79 | 1 | 183 | 4 |
Provision (release) | 2,284 | 1,549 | 17,888 | 12,010 |
Ending balance | 48,989 | 33,187 | 48,989 | 33,187 | 36,055
Period-end allowance allocated to: |  |  |  |  |
Loans evaluated on an individual basis | 0 | 0 | 0 | 0 |
Loans evaluated on a collective basis | 48,989 | 33,187 | 48,989 | 33,187 |
Period-end loan balances: |  |  |  |  |
Loans evaluated on an individual basis | 7,449 | 7,918 | 7,449 | 7,918 |
Loans evaluated on a collective basis | 4,141,600 | 3,637,805 | 4,141,600 | 3,637,805 |
Ending balance | 4,149,049 | 3,645,723 | 4,149,049 | 3,645,723 | 3,801,180
Commercial | Construction |  |  |  |  |
Allowance for credit losses |  |  |  |  |
Beginning balance | 9,198 | 9,228 | 10,762 | 6,987 | 6,987
Charge-offs | 0 | 0 | 0 | 0 | (794)
Recoveries | 0 | 1 | 0 | 532 |
Provision (release) | (850) | 2,088 | (2,414) | 3,798 |
Ending balance | 8,348 | 11,317 | 8,348 | 11,317 | 10,762
Period-end allowance allocated to: |  |  |  |  |
Loans evaluated on an individual basis | 0 | 1,600 | 0 | 1,600 |
Loans evaluated on a collective basis | 8,348 | 9,717 | 8,348 | 9,717 |
Period-end loan balances: |  |  |  |  |
Loans evaluated on an individual basis | 3,308 | 4,828 | 3,308 | 4,828 |
Loans evaluated on a collective basis | 802,549 | 1,038,740 | 802,549 | 1,038,740 |
Ending balance | 805,857 | 1,043,568 | 805,857 | 1,043,568 | 1,035,530
Commercial | Commercial Small Business Leases |  |  |  |  |
Allowance for credit losses |  |  |  |  |
Beginning balance | 16,218 | 10,383 | 15,170 | 9,868 | 9,868
Charge-offs | (5,451) | (3,522) | (15,191) | (10,327) | (15,641)
Recoveries | 664 | 484 | 2,086 | 1,399 |
Provision (release) | 3,943 | 2,647 | 13,309 | 9,052 |
Ending balance | 15,374 | 9,992 | 15,374 | 9,992 | 15,170
Period-end allowance allocated to: |  |  |  |  |
Loans evaluated on an individual basis | 0 | 0 | 0 | 0 |
Loans evaluated on a collective basis | 15,374 | 9,992 | 15,374 | 9,992 |
Period-end loan balances: |  |  |  |  |
Loans evaluated on an individual basis | 0 | 0 | 0 | 0 |
Loans evaluated on a collective basis | 645,421 | 605,698 | 645,421 | 605,698 |
Ending balance | 645,421 | 605,698 | 645,421 | 605,698 | 623,622
Residential |  |  |  |  |
Allowance for credit losses |  |  |  |  |
Beginning balance | 5,057 | 5,043 | 5,483 | 4,668 | 4,668
Charge-offs | (8) | 0 | (109) | (33) | (41)
Recoveries | 44 | 55 | 176 | 211 |
Provision (release) | 370 | 253 | (87) | 505 |
Ending balance | 5,463 | 5,351 | 5,463 | 5,351 | 5,483
Period-end allowance allocated to: |  |  |  |  |
Loans evaluated on an individual basis | 0 | 0 | 0 | 0 |
Loans evaluated on a collective basis | 5,463 | 5,351 | 5,463 | 5,351 |
Period-end loan balances: |  |  |  |  |
Loans evaluated on an individual basis | 8,442 | 5,838 | 8,442 | 5,838 |
Loans evaluated on a collective basis | 929,152 | 849,502 | 929,152 | 849,502 |
Ending balance | 937,594 | 855,340 | 937,594 | 855,340 | 867,895
Consumer |  |  |  |  |
Allowance for credit losses |  |  |  |  |
Beginning balance | 54,765 | 56,543 | 58,543 | 53,320 | 53,320
Charge-offs | (5,983) | (5,872) | (18,259) | (15,374) | (22,394)
Recoveries | 644 | 357 | 1,884 | 906 |
Provision (release) | 3,308 | 5,585 | 10,566 | 17,761 |
Ending balance | 52,734 | 56,613 | 52,734 | 56,613 | 58,543
Period-end allowance allocated to: |  |  |  |  |
Loans evaluated on an individual basis | 0 | 0 | 0 | 0 |
Loans evaluated on a collective basis | 52,734 | 56,613 | 52,734 | 56,613 |
Period-end loan balances: |  |  |  |  |
Loans evaluated on an individual basis | 2,981 | 1,798 | 2,981 | 1,798 |
Loans evaluated on a collective basis | 2,135,098 | 1,955,284 | 2,135,098 | 1,955,284 |
Ending balance | $ 2,138,079 | $ 1,957,082 | $ 2,138,079 | $ 1,957,082 | $ 2,012,134

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