Loans and Leases - Aging Analysis of Loan and Lease Portfolio Including Unearned Income (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Loans and Leases [Abstract]
Loans and leases, net	$ 3,608,346	$ 3,678,388
90+ Days Past Due	134	0
Nonaccrual	955	929
Non-accrual with no ACL	955	170
Commercial [Member]
Loans and Leases [Abstract]
Loans and leases, net	1,417,992	1,353,271
90+ Days Past Due	0	0
Nonaccrual	955	170
Non-accrual with no ACL	955	170
Agricultural [Member]
Loans and Leases [Abstract]
Loans and leases, net	710,789	751,026
90+ Days Past Due	0	0
Nonaccrual	0	0
Non-accrual with no ACL	0	0
Residential and Home Equity [Member]
Loans and Leases [Abstract]
Loans and leases, net	404,635	404,399
90+ Days Past Due	134	0
Nonaccrual	0	0
Non-accrual with no ACL	0	0
Construction [Member]
Loans and Leases [Abstract]
Loans and leases, net	170,681	194,903
90+ Days Past Due	0	0
Nonaccrual	0	0
Non-accrual with no ACL	0	0
Real Estate [Member]
Loans and Leases [Abstract]
Loans and leases, net	2,704,097	2,703,599
90+ Days Past Due	134	0
Nonaccrual	955	170
Non-accrual with no ACL	955	170
Commercial & Industrial [Member]
Loans and Leases [Abstract]
Loans and leases, net	488,440	504,403
90+ Days Past Due	0	0
Nonaccrual	0	759
Non-accrual with no ACL	0	0
Agricultural [Member]
Loans and Leases [Abstract]
Loans and leases, net	251,958	289,847
90+ Days Past Due	0	0
Nonaccrual	0	0
Non-accrual with no ACL	0	0
Commercial Leases [Member]
Loans and Leases [Abstract]
Loans and leases, net	159,124	175,455
90+ Days Past Due	0	0
Nonaccrual	0	0
Non-accrual with no ACL	0	0
Consumer and Other [Member]
Loans and Leases [Abstract]
Loans and leases, net	4,727	5,084
90+ Days Past Due	0	0
Nonaccrual	0	0
Non-accrual with no ACL	0	0
30-89 Days Past Due [Member]
Loans and Leases [Abstract]
Loans and leases, net	8,677	74
30-89 Days Past Due [Member] | Commercial [Member]
Loans and Leases [Abstract]
Loans and leases, net	7,249	0
30-89 Days Past Due [Member] | Agricultural [Member]
Loans and Leases [Abstract]
Loans and leases, net	0	0
30-89 Days Past Due [Member] | Residential and Home Equity [Member]
Loans and Leases [Abstract]
Loans and leases, net	0	0
30-89 Days Past Due [Member] | Construction [Member]
Loans and Leases [Abstract]
Loans and leases, net	0	0
30-89 Days Past Due [Member] | Real Estate [Member]
Loans and Leases [Abstract]
Loans and leases, net	7,249	0
30-89 Days Past Due [Member] | Commercial & Industrial [Member]
Loans and Leases [Abstract]
Loans and leases, net	0	33
30-89 Days Past Due [Member] | Agricultural [Member]
Loans and Leases [Abstract]
Loans and leases, net	16	36
30-89 Days Past Due [Member] | Commercial Leases [Member]
Loans and Leases [Abstract]
Loans and leases, net	1,404	0
30-89 Days Past Due [Member] | Consumer and Other [Member]
Loans and Leases [Abstract]
Loans and leases, net	8	5
Total Past Due and Nonaccrual [Member]
Loans and Leases [Abstract]
Loans and leases, net	9,766	1,003
Total Past Due and Nonaccrual [Member] | Commercial [Member]
Loans and Leases [Abstract]
Loans and leases, net	8,204	170
Total Past Due and Nonaccrual [Member] | Agricultural [Member]
Loans and Leases [Abstract]
Loans and leases, net	0	0
Total Past Due and Nonaccrual [Member] | Residential and Home Equity [Member]
Loans and Leases [Abstract]
Loans and leases, net	134	0
Total Past Due and Nonaccrual [Member] | Construction [Member]
Loans and Leases [Abstract]
Loans and leases, net	0	0
Total Past Due and Nonaccrual [Member] | Real Estate [Member]
Loans and Leases [Abstract]
Loans and leases, net	8,338	170
Total Past Due and Nonaccrual [Member] | Commercial & Industrial [Member]
Loans and Leases [Abstract]
Loans and leases, net	0	792
Total Past Due and Nonaccrual [Member] | Agricultural [Member]
Loans and Leases [Abstract]
Loans and leases, net	16	36
Total Past Due and Nonaccrual [Member] | Commercial Leases [Member]
Loans and Leases [Abstract]
Loans and leases, net	1,404	0
Total Past Due and Nonaccrual [Member] | Consumer and Other [Member]
Loans and Leases [Abstract]
Loans and leases, net	8	5
Current [Member]
Loans and Leases [Abstract]
Loans and leases, net	3,598,580	3,677,385
Current [Member] | Commercial [Member]
Loans and Leases [Abstract]
Loans and leases, net	1,409,788	1,353,101
Current [Member] | Agricultural [Member]
Loans and Leases [Abstract]
Loans and leases, net	710,789	751,026
Current [Member] | Residential and Home Equity [Member]
Loans and Leases [Abstract]
Loans and leases, net	404,501	404,399
Current [Member] | Construction [Member]
Loans and Leases [Abstract]
Loans and leases, net	170,681	194,903
Current [Member] | Real Estate [Member]
Loans and Leases [Abstract]
Loans and leases, net	2,695,759	2,703,429
Current [Member] | Commercial & Industrial [Member]
Loans and Leases [Abstract]
Loans and leases, net	488,440	503,611
Current [Member] | Agricultural [Member]
Loans and Leases [Abstract]
Loans and leases, net	251,942	289,811
Current [Member] | Commercial Leases [Member]
Loans and Leases [Abstract]
Loans and leases, net	157,720	175,455
Current [Member] | Consumer and Other [Member]
Loans and Leases [Abstract]
Loans and leases, net	$ 4,719	$ 5,079