Loans and Allowance for Credit Losses - Past Due Aging of Loan Portfolio by Loan Class (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Loans	$ 12,003,894	$ 9,241,861
Loans > 90 Days or More Past Due And Accruing	1,737	963
Current
Financing Receivable, Past Due [Line Items]
Loans	11,952,887	9,207,113
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	29,051	15,006
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	5,935	7,056
90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	16,021	12,686
Commercial and industrial loans
Financing Receivable, Past Due [Line Items]
Loans	3,437,126	2,714,565
Loans > 90 Days or More Past Due And Accruing	1,147	675
Commercial and industrial loans | Current
Financing Receivable, Past Due [Line Items]
Loans	3,429,314	2,708,539
Commercial and industrial loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	4,904	2,602
Commercial and industrial loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	434	2,437
Commercial and industrial loans | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,474	987
Agricultural land, production and other loans to farmers
Financing Receivable, Past Due [Line Items]
Loans	241,793	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	241,739	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	54	26
Construction
Financing Receivable, Past Due [Line Items]
Loans	835,582	523,066
Loans > 90 Days or More Past Due And Accruing	0	0
Construction | Current
Financing Receivable, Past Due [Line Items]
Loans	832,716	522,349
Construction | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,436	717
Construction | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	418	0
Construction | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	12	0
Commercial real estate, non-owner occupied
Financing Receivable, Past Due [Line Items]
Loans	2,407,475	2,135,459
Loans > 90 Days or More Past Due And Accruing	264	0
Commercial real estate, non-owner occupied | Current
Financing Receivable, Past Due [Line Items]
Loans	2,395,495	2,124,853
Commercial real estate, non-owner occupied | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	5,946	3,327
Commercial real estate, non-owner occupied | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	881	0
Commercial real estate, non-owner occupied | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	5,153	7,279
Commercial real estate, owner occupied
Financing Receivable, Past Due [Line Items]
Loans	1,246,528	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	1,241,714	985,785
Commercial real estate, owner occupied | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	4,495	643
Commercial real estate, owner occupied | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Commercial real estate, owner occupied | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	319	292
Residential
Financing Receivable, Past Due [Line Items]
Loans	2,096,655	1,159,127
Loans > 90 Days or More Past Due And Accruing	0	0
Residential | Current
Financing Receivable, Past Due [Line Items]
Loans	2,079,959	1,148,294
Residential | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	8,607	3,979
Residential | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,278	4,255
Residential | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	5,811	2,599
Home equity
Financing Receivable, Past Due [Line Items]
Loans	630,632	523,754
Loans > 90 Days or More Past Due And Accruing	326	288
Home equity | Current
Financing Receivable, Past Due [Line Items]
Loans	624,543	518,643
Home equity | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,206	3,327
Home equity | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,782	281
Home equity | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,101	1,503
Consumer
Financing Receivable, Past Due [Line Items]
Loans	175,211	146,092
Loans > 90 Days or More Past Due And Accruing	0	0
Consumer | Current
Financing Receivable, Past Due [Line Items]
Loans	174,629	145,634
Consumer | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	343	375
Consumer | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	142	83
Consumer | 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Loans	97	0
Public finance and other commercial loans
Financing Receivable, Past Due [Line Items]
Loans	932,892	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	932,778	806,636
Public finance and other commercial loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	114	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