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SEGMENT REPORTING - Schedule of Segment Reporting, by Reportable Business Segments (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Segment Reporting Information [Line Items] |  |  |
Interest income | $ 333,778 | $ 329,452 |
Interest expense | 111,939 | 128,064 |
Net interest income | 221,839 | 201,388 |
Provision for credit losses | 21,892 | 21,105 |
Noninterest income | 64,023 | 65,878 |
Noninterest expense |  |  |
Salaries and employee benefits | 86,615 | 82,930 |
Occupancy and equipment | 10,677 | 12,885 |
Data processing and communications expenses | 14,855 | 14,654 |
Other expenses | 38,887 | 38,242 |
Total noninterest expense | 151,034 | 148,711 |
Income before income tax expense | 112,936 | 97,450 |
Income tax expense | 25,001 | 23,138 |
Net income | 87,935 | 74,312 |
Total assets | 26,514,940 | 25,655,445 | $ 26,262,050
Goodwill | 1,015,646 | 1,015,646 | 1,015,646
Other intangible assets, net | 66,658 | 83,527 | $ 70,761
Banking Division |  |  |
Segment Reporting Information [Line Items] |  |  |
Interest income | 233,319 | 235,122 |
Interest expense | 49,106 | 70,654 |
Net interest income | 184,213 | 164,468 |
Provision for credit losses | 16,420 | 19,127 |
Noninterest income | 28,724 | 26,363 |
Noninterest expense |  |  |
Salaries and employee benefits | 62,716 | 58,916 |
Occupancy and equipment | 9,804 | 11,753 |
Data processing and communications expenses | 13,391 | 13,184 |
Other expenses | 25,685 | 24,447 |
Total noninterest expense | 111,596 | 108,300 |
Income before income tax expense | 84,921 | 63,404 |
Income tax expense | 19,154 | 16,028 |
Net income | 65,767 | 47,376 |
Total assets | 19,291,312 | 18,553,964 |
Goodwill | 951,148 | 951,148 |
Other intangible assets, net | 64,330 | 78,275 |
Retail Mortgage Division |  |  |
Segment Reporting Information [Line Items] |  |  |
Interest income | 57,932 | 55,099 |
Interest expense | 36,088 | 31,812 |
Net interest income | 21,844 | 23,287 |
Provision for credit losses | 5,191 | 2,332 |
Noninterest income | 34,729 | 38,765 |
Noninterest expense |  |  |
Salaries and employee benefits | 20,995 | 21,073 |
Occupancy and equipment | 829 | 1,049 |
Data processing and communications expenses | 1,297 | 1,366 |
Other expenses | 11,963 | 12,530 |
Total noninterest expense | 35,084 | 36,018 |
Income before income tax expense | 16,298 | 23,702 |
Income tax expense | 3,423 | 4,978 |
Net income | 12,875 | 18,724 |
Total assets | 4,762,848 | 4,971,058 |
Goodwill | 0 | 0 |
Other intangible assets, net | 0 | 0 |
Warehouse Lending Division |  |  |
Segment Reporting Information [Line Items] |  |  |
Interest income | 15,200 | 16,483 |
Interest expense | 9,298 | 10,455 |
Net interest income | 5,902 | 6,028 |
Provision for credit losses | (175) | 145 |
Noninterest income | 554 | 740 |
Noninterest expense |  |  |
Salaries and employee benefits | 552 | 888 |
Occupancy and equipment | 7 | 7 |
Data processing and communications expenses | 38 | 25 |
Other expenses | 270 | 237 |
Total noninterest expense | 867 | 1,157 |
Income before income tax expense | 5,764 | 5,466 |
Income tax expense | 1,210 | 1,148 |
Net income | 4,554 | 4,318 |
Total assets | 911,361 | 897,460 |
Goodwill | 0 | 0 |
Other intangible assets, net | 0 | 0 |
Premium Finance Division |  |  |
Segment Reporting Information [Line Items] |  |  |
Interest income | 27,327 | 22,748 |
Interest expense | 17,447 | 15,143 |
Net interest income | 9,880 | 7,605 |
Provision for credit losses | 456 | (499) |
Noninterest income | 16 | 10 |
Noninterest expense |  |  |
Salaries and employee benefits | 2,352 | 2,053 |
Occupancy and equipment | 37 | 76 |
Data processing and communications expenses | 129 | 79 |
Other expenses | 969 | 1,028 |
Total noninterest expense | 3,487 | 3,236 |
Income before income tax expense | 5,953 | 4,878 |
Income tax expense | 1,214 | 984 |
Net income | 4,739 | 3,894 |
Total assets | 1,549,419 | 1,232,963 |
Goodwill | 64,498 | 64,498 |
Other intangible assets, net | $ 2,328 | $ 5,252 |

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