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Loans and Allowance for Credit Losses - Schedule of Past Due Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | $ 13,601,846 | $ 13,786,479
Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 13,601,846 | 13,786,479
Commercial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 3,391,769 | 3,956,422
Commercial | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 3,200,212 | 3,757,700
Commercial real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 6,380,674 | 5,946,512
Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 6,221,484 | 5,774,811
BBCC | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 350,747 | 370,423
Residential real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 2,255,289 | 2,248,422
Residential real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 2,255,289 | 2,248,422
Indirect |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 873,139 | 913,902
Indirect | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 873,139 | 913,902
Direct |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 140,385 | 164,807
Direct | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 140,385 | 164,807
Home equity |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 560,590 | 556,414
Home equity | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 560,590 | 556,414
Total Past Due | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 37,862 | 69,967
Total Past Due | Commercial | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 4,943 | 5,741
Total Past Due | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 8,724 | 28,287
Total Past Due | BBCC | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 1,018 | 1,837
Total Past Due | Residential real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 15,191 | 22,601
Total Past Due | Indirect | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 5,309 | 6,674
Total Past Due | Direct | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 1,008 | 1,712
Total Past Due | Home equity | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 1,669 | 3,115
30-59 Days Past Due | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 18,413 | 23,447
30-59 Days Past Due | Commercial | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 2,723 | 2,977
30-59 Days Past Due | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 1,402 | 887
30-59 Days Past Due | BBCC | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 747 | 894
30-59 Days Past Due | Residential real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 8,273 | 11,639
30-59 Days Past Due | Indirect | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 3,888 | 5,222
30-59 Days Past Due | Direct | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 687 | 753
30-59 Days Past Due | Home equity | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 693 | 1,075
60-89 Days Past Due | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 4,648 | 6,840
60-89 Days Past Due | Commercial | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 617 | 664
60-89 Days Past Due | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 280 | 128
60-89 Days Past Due | BBCC | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 162 | 882
60-89 Days Past Due | Residential real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 2,364 | 3,296
60-89 Days Past Due | Indirect | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 867 | 960
60-89 Days Past Due | Direct | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 159 | 533
60-89 Days Past Due | Home equity | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 199 | 377
Past Due 90 Days or More | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 14,801 | 39,680
Past Due 90 Days or More | Commercial | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 1,603 | 2,100
Past Due 90 Days or More | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 7,042 | 27,272
Past Due 90 Days or More | BBCC | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 109 | 61
Past Due 90 Days or More | Residential real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 4,554 | 7,666
Past Due 90 Days or More | Indirect | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 554 | 492
Past Due 90 Days or More | Direct | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 162 | 426
Past Due 90 Days or More | Home equity | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 777 | 1,663
Current | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 13,563,984 | 13,716,512
Current | Commercial | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 3,195,269 | 3,751,959
Current | Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 6,212,760 | 5,746,524
Current | BBCC | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 349,729 | 368,586
Current | Residential real estate | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 2,240,098 | 2,225,821
Current | Indirect | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 867,830 | 907,228
Current | Direct | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | 139,377 | 163,095
Current | Home equity | Segment Portfolio Reclassification, Adjusted Balance |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total loans, net of unearned income | $ 558,921 | $ 553,299

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