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LOANS AND CREDIT QUALITY - Aging of the Amortized Cost in Past Due Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | $ 14,568,795 | $ 9,643,497
30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 44,678 | 77,998
60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 11,205 | 13,339
Greater than 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 38,316 | 6,082
Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 94,199 | 97,419
Loans Not Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 14,474,596 | 9,546,078
Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 547,311 | 410,040
Commercial and industrial | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 488,048 | 402,307
Commercial and industrial | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 1,876 | 1,920
Commercial and industrial | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 436 | 82
Commercial and industrial | Greater than 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 9,178 | 278
Commercial and industrial | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 11,490 | 2,280
Commercial and industrial | Loans Not Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 535,821 | 407,760
Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 5,448,374 | 2,794,581
Commercial real estate | Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 535,776 | 104,430
Commercial real estate | Construction and land development | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 522,789 | 103,989
Commercial real estate | Construction and land development | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 1,204 | 5,400
Commercial real estate | Construction and land development | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Commercial real estate | Construction and land development | Greater than 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 2,987 | 140
Commercial real estate | Construction and land development | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 4,191 | 5,540
Commercial real estate | Construction and land development | Loans Not Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 531,585 | 98,890
Commercial real estate | Multifamily |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 5,448,374 | 2,794,581
Commercial real estate | Multifamily | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 5,221,446 | 2,793,251
Commercial real estate | Multifamily | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 2,095 | 1,940
Commercial real estate | Multifamily | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Commercial real estate | Multifamily | Greater than 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 1,614 | 0
Commercial real estate | Multifamily | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 3,709 | 1,940
Commercial real estate | Multifamily | Loans Not Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 5,444,665 | 2,792,641
Commercial real estate | Non-owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 1,864,040 | 1,657,597
Commercial real estate | Non-owner occupied | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 1,743,818 | 1,621,182
Commercial real estate | Non-owner occupied | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 1,000 | 513
Commercial real estate | Non-owner occupied | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Commercial real estate | Non-owner occupied | Greater than 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 14,018 | 0
Commercial real estate | Non-owner occupied | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 15,018 | 513
Commercial real estate | Non-owner occupied | Loans Not Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 1,849,022 | 1,657,084
Commercial real estate | Owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 709,239 | 360,100
Commercial real estate | Owner occupied | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 639,913 | 336,878
Commercial real estate | Owner occupied | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 1,005
Commercial real estate | Owner occupied | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 0 | 0
Commercial real estate | Owner occupied | Greater than 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 1,177 | 0
Commercial real estate | Owner occupied | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 1,177 | 1,005
Commercial real estate | Owner occupied | Loans Not Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 708,062 | 359,095
Residential Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 3,907,101 | 2,280,963
Residential Real Estate | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 12,756 | 13,662
Residential Real Estate | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 3,033 | 406
Residential Real Estate | Greater than 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 6,422 | 502
Residential Real Estate | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 22,211 | 14,570
Residential Real Estate | Loans Not Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 3,884,890 | 2,266,393
Auto |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 954,615 | 1,596,935
Auto | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 24,693 | 53,197
Auto | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 7,615 | 12,637
Auto | Greater than 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 2,915 | 5,161
Auto | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 35,223 | 70,995
Auto | Loans Not Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 919,392 | 1,525,940
Other consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 602,339 | 438,851
Other consumer | 30-59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 1,054 | 361
Other consumer | 60-89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 121 | 214
Other consumer | Greater than 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 5 | 1
Other consumer | Total Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | 1,180 | 576
Other consumer | Loans Not Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loan and lease receivables | $ 601,159 | $ 438,275

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