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Loans (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Summary of Loans [Abstract]    
Loans $ 9,650,713 $ 8,150,147
Deferred loan origination (fees) costs, net (98,200) (109,100)
Loans held for sale 3,371 562
Loans serviced for unrelated third parties 856,900 592,700
Mortgage servicing rights 1,000 600
Loans and Leases Receivable, Related Parties [Roll Forward]    
Balance at January 1 2,516 3,292
New loans 705 576
Adjustment due to change in composition of related parties 0 (37)
Repayments (2,134) (1,315)
Balance at December 31 1,087 2,516
Commercial and Industrial [Member]    
Summary of Loans [Abstract]    
Loans 1,354,248 1,266,031
Commercial Real Estate [Member]    
Summary of Loans [Abstract]    
Loans 3,626,910 2,807,941
Residential Real Estate [Member]    
Summary of Loans [Abstract]    
Loans 2,125,804 1,649,870
Loans held for sale 400 600
Indirect Auto [Member]    
Summary of Loans [Abstract]    
Loans 1,130,132 989,587
Residential Solar [Member]    
Summary of Loans [Abstract]    
Loans 917,755 856,798
Loans held for sale 2,900  
Home Equity [Member]    
Summary of Loans [Abstract]    
Loans 337,214 314,124
Other Consumer [Member]    
Summary of Loans [Abstract]    
Loans 158,650 265,796
Agricultural and Agricultural Real Estate Mortgages [Member]    
Summary of Loans [Abstract]    
Loans serviced for unrelated third parties $ 26,400 $ 31,000