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Loans and Allowance - Past Due Aging of Loan Portfolio by Loan Class (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 11,397,417 | $ 9,241,861
Loans > 90 Days or More Past Due And Accruing | 592 | 963
Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 11,350,565 | 9,207,113
30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 14,487 | 15,006
60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 22,857 | 7,056
90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 9,508 | 12,686
Commercial and industrial loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 3,297,477 | 2,714,565
Loans > 90 Days or More Past Due And Accruing | 38 | 675
Commercial and industrial loans | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 3,290,767 | 2,708,539
Commercial and industrial loans | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 5,344 | 2,602
Commercial and industrial loans | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 124 | 2,437
Commercial and industrial loans | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,242 | 987
Agricultural land, production and other loans to farmers |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 214,904 | 246,442
Loans > 90 Days or More Past Due And Accruing | 0 | 0
Agricultural land, production and other loans to farmers | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 214,847 | 246,380
Agricultural land, production and other loans to farmers | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 36
Agricultural land, production and other loans to farmers | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Agricultural land, production and other loans to farmers | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 57 | 26
Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 745,983 | 523,066
Loans > 90 Days or More Past Due And Accruing | 0 | 0
Construction | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 731,495 | 522,349
Construction | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 621 | 717
Construction | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 13,759 | 0
Construction | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 108 | 0
Commercial real estate, non-owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,423,185 | 2,135,459
Loans > 90 Days or More Past Due And Accruing | 0 | 0
Commercial real estate, non-owner occupied | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,412,738 | 2,124,853
Commercial real estate, non-owner occupied | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,126 | 3,327
Commercial real estate, non-owner occupied | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,312 | 0
Commercial real estate, non-owner occupied | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 3,009 | 7,279
Commercial real estate, owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,264,563 | 986,720
Loans > 90 Days or More Past Due And Accruing | 0 | 0
Commercial real estate, owner occupied | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,263,864 | 985,785
Commercial real estate, owner occupied | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 256 | 643
Commercial real estate, owner occupied | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 145 | 0
Commercial real estate, owner occupied | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 298 | 292
Residential |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,813,297 | 1,159,127
Loans > 90 Days or More Past Due And Accruing | 554 | 0
Residential | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,803,199 | 1,148,294
Residential | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 5,241 | 3,979
Residential | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,683 | 4,255
Residential | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 3,174 | 2,599
Home equity |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 586,108 | 523,754
Loans > 90 Days or More Past Due And Accruing | 0 | 288
Home equity | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 582,181 | 518,643
Home equity | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,593 | 3,327
Home equity | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 719 | 281
Home equity | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,615 | 1,503
Individuals' loans for household and other personal expenditures |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 157,264 | 146,092
Loans > 90 Days or More Past Due And Accruing | 0 | 0
Individuals' loans for household and other personal expenditures | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 156,838 | 145,634
Individuals' loans for household and other personal expenditures | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 306 | 375
Individuals' loans for household and other personal expenditures | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 115 | 83
Individuals' loans for household and other personal expenditures | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 5 | 0
Public finance and other commercial loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 894,636 | 806,636
Loans > 90 Days or More Past Due And Accruing | 0 | 0
Public finance and other commercial loans | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 894,636 | 806,636
Public finance and other commercial loans | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Public finance and other commercial loans | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Public finance and other commercial loans | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 0 | $ 0

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