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SEGMENT REPORTING - Schedule of Segment Reporting, by Reportable Business Segments (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Segment Reporting Information [Line Items] |  |  |
Interest income | $ 329,452 | $ 295,716 |
Interest expense | 128,064 | 84,064 |
Net interest income | 201,388 | 211,652 |
Provision for credit losses | 21,105 | 49,729 |
Noninterest income | 65,878 | 56,050 |
Noninterest expense |  |  |
Salaries and employee benefits | 82,930 | 80,910 |
Occupancy and equipment | 12,885 | 12,986 |
Data processing and communications expenses | 14,654 | 13,034 |
Other expenses | 38,242 | 32,491 |
Total noninterest expense | 148,711 | 139,421 |
Income before income tax expense | 97,450 | 78,552 |
Income tax expense | 23,138 | 18,131 |
Net income | 74,312 | 60,421 |
Total assets | 25,655,445 | 26,088,384 | $ 25,203,699
Goodwill | 1,015,646 | 1,015,646 | 1,015,646
Other intangible assets, net | 83,527 | 101,488 | $ 87,949
Banking Division |  |  |
Segment Reporting Information [Line Items] |  |  |
Interest income | 235,122 | 212,590 |
Interest expense | 70,654 | 35,305 |
Net interest income | 164,468 | 177,285 |
Provision for credit losses | 19,127 | 47,036 |
Noninterest income | 26,363 | 24,503 |
Noninterest expense |  |  |
Salaries and employee benefits | 58,916 | 57,751 |
Occupancy and equipment | 11,753 | 11,643 |
Data processing and communications expenses | 13,184 | 11,834 |
Other expenses | 24,447 | 19,445 |
Total noninterest expense | 108,300 | 100,673 |
Income before income tax expense | 63,404 | 54,079 |
Income tax expense | 16,028 | 13,029 |
Net income | 47,376 | 41,050 |
Total assets | 18,553,964 | 19,142,989 |
Goodwill | 951,148 | 951,148 |
Other intangible assets, net | 78,275 | 93,285 |
Retail Mortgage Division |  |  |
Segment Reporting Information [Line Items] |  |  |
Interest income | 55,099 | 48,589 |
Interest expense | 31,812 | 28,562 |
Net interest income | 23,287 | 20,027 |
Provision for credit losses | 2,332 | 2,853 |
Noninterest income | 38,765 | 31,058 |
Noninterest expense |  |  |
Salaries and employee benefits | 21,073 | 20,160 |
Occupancy and equipment | 1,049 | 1,283 |
Data processing and communications expenses | 1,366 | 1,069 |
Other expenses | 12,530 | 11,747 |
Total noninterest expense | 36,018 | 34,259 |
Income before income tax expense | 23,702 | 13,973 |
Income tax expense | 4,978 | 2,934 |
Net income | 18,724 | 11,039 |
Total assets | 4,971,058 | 4,879,135 |
Goodwill | 0 | 0 |
Other intangible assets, net | 0 | 0 |
Warehouse Lending Division |  |  |
Segment Reporting Information [Line Items] |  |  |
Interest income | 16,483 | 16,614 |
Interest expense | 10,455 | 10,914 |
Net interest income | 6,028 | 5,700 |
Provision for credit losses | 145 | (194) |
Noninterest income | 740 | 480 |
Noninterest expense |  |  |
Salaries and employee benefits | 888 | 802 |
Occupancy and equipment | 7 | 1 |
Data processing and communications expenses | 25 | 46 |
Other expenses | 237 | 202 |
Total noninterest expense | 1,157 | 1,051 |
Income before income tax expense | 5,466 | 5,323 |
Income tax expense | 1,148 | 1,118 |
Net income | 4,318 | 4,205 |
Total assets | 897,460 | 936,169 |
Goodwill | 0 | 0 |
Other intangible assets, net | 0 | 0 |
SBA Division |  |  |
Noninterest expense |  |  |
Net income | 0 | 0 |
Premium Finance Division |  |  |
Segment Reporting Information [Line Items] |  |  |
Interest income | 22,748 | 17,923 |
Interest expense | 15,143 | 9,283 |
Net interest income | 7,605 | 8,640 |
Provision for credit losses | (499) | 34 |
Noninterest income | 10 | 9 |
Noninterest expense |  |  |
Salaries and employee benefits | 2,053 | 2,197 |
Occupancy and equipment | 76 | 59 |
Data processing and communications expenses | 79 | 85 |
Other expenses | 1,028 | 1,097 |
Total noninterest expense | 3,236 | 3,438 |
Income before income tax expense | 4,878 | 5,177 |
Income tax expense | 984 | 1,050 |
Net income | 3,894 | 4,127 |
Total assets | 1,232,963 | 1,130,091 |
Goodwill | 64,498 | 64,498 |
Other intangible assets, net | $ 5,252 | $ 8,203 |

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