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Segment Information (Summary of Certain Operating Information For Reportable Segments) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Segment Reporting Information [Line Items] |  |  |
Net interest income | $ 1,495,362 | $ 1,124,957 | $ 1,039,907
Provision for credit losses | 78,589 | (59,263) | 214,220
Non-interest income | 461,053 | 586,120 | 604,189
Non-interest expense | 1,177,271 | 1,132,544 | 1,040,095
Income tax expense | 190,873 | 171,645 | 96,791
Net income | 509,682 | 466,151 | 292,990
Total assets at end of year | 52,949,649 | 50,142,143 | 45,080,768
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income | 1,465,183 | 1,098,374 | 1,016,080
Provision for credit losses | 78,589 | (59,263) | 214,220
Non-interest income | 520,882 | 647,471 | 658,893
Non-interest expense | 1,206,921 | 1,167,312 | 1,070,972
Income tax expense | 190,873 | 171,645 | 96,791
Net income | 509,682 | 466,151 | 292,990
Total assets at end of year | 52,949,649 | 50,142,143 | 45,080,768
Operating Segments | Community Banking |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income | 1,180,198 | 868,477 | 808,443
Provision for credit losses | 74,184 | (60,309) | 206,774
Non-interest income | 298,572 | 422,698 | 469,187
Non-interest expense | 926,298 | 912,296 | 855,797
Income tax expense | 128,939 | 120,092 | 51,439
Net income | 349,349 | 319,096 | 163,620
Total assets at end of year | 41,368,200 | 40,253,818 | 36,769,640
Operating Segments | Specialty Finance |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income | 246,681 | 197,958 | 177,025
Provision for credit losses | 4,405 | 1,046 | 7,446
Non-interest income | 97,701 | 95,822 | 86,268
Non-interest expense | 172,784 | 143,526 | 118,560
Income tax expense | 46,286 | 40,040 | 36,956
Net income | 120,907 | 109,168 | 100,331
Total assets at end of year | 9,826,254 | 8,382,722 | 7,015,590
Operating Segments | Wealth Management |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income | 38,304 | 31,939 | 30,612
Provision for credit losses | 0 | 0 | 0
Non-interest income | 124,609 | 128,951 | 103,438
Non-interest expense | 107,839 | 111,490 | 96,615
Income tax expense | 15,648 | 11,513 | 8,396
Net income | 39,426 | 37,887 | 29,039
Total assets at end of year | 1,755,195 | 1,505,603 | 1,295,538
Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Net interest income | 30,179 | 26,583 | 23,827
Provision for credit losses | 0 | 0 | 0
Non-interest income | (59,829) | (61,351) | (54,704)
Non-interest expense | (29,650) | (34,768) | (30,877)
Income tax expense | 0 | 0 | 0
Net income | 0 | 0 | 0
Total assets at end of year | $ 0 | $ 0 | $ 0

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