Loans and Leases - Aging Analysis of Loan and Lease Portfolio Including Unearned Income (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Loans and Leases [Abstract]
Loans and leases, net	$ 3,623,636	$ 3,678,388
90+ Days Past Due	0	0
Nonaccrual	0	929
Non-accrual with no ACL	0	170
Commercial [Member]
Loans and Leases [Abstract]
Loans and leases, net	1,403,119	1,353,271
90+ Days Past Due	0	0
Nonaccrual	0	170
Non-accrual with no ACL	0	170
Agricultural [Member]
Loans and Leases [Abstract]
Loans and leases, net	720,079	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	401,848	404,399
90+ Days Past Due	0	0
Nonaccrual	0	0
Non-accrual with no ACL	0	0
Construction [Member]
Loans and Leases [Abstract]
Loans and leases, net	173,827	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	2,698,873	2,703,599
90+ Days Past Due	0	0
Nonaccrual	0	170
Non-accrual with no ACL	0	170
Commercial & Industrial [Member]
Loans and Leases [Abstract]
Loans and leases, net	491,547	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	261,450	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	166,734	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	5,032	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	1,163	74
30-89 Days Past Due [Member] | Commercial [Member]
Loans and Leases [Abstract]
Loans and leases, net	956	0
30-89 Days Past Due [Member] | Agricultural [Member]
Loans and Leases [Abstract]
Loans and leases, net	177	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	1,133	0
30-89 Days Past Due [Member] | Commercial & Industrial [Member]
Loans and Leases [Abstract]
Loans and leases, net	21	33
30-89 Days Past Due [Member] | Agricultural [Member]
Loans and Leases [Abstract]
Loans and leases, net	0	36
30-89 Days Past Due [Member] | Commercial Leases [Member]
Loans and Leases [Abstract]
Loans and leases, net	0	0
30-89 Days Past Due [Member] | Consumer and Other [Member]
Loans and Leases [Abstract]
Loans and leases, net	9	5
Total Past Due and Nonaccrual [Member]
Loans and Leases [Abstract]
Loans and leases, net	1,163	1,003
Total Past Due and Nonaccrual [Member] | Commercial [Member]
Loans and Leases [Abstract]
Loans and leases, net	956	170
Total Past Due and Nonaccrual [Member] | Agricultural [Member]
Loans and Leases [Abstract]
Loans and leases, net	177	0
Total Past Due and Nonaccrual [Member] | Residential and Home Equity [Member]
Loans and Leases [Abstract]
Loans and leases, net	0	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	1,133	170
Total Past Due and Nonaccrual [Member] | Commercial & Industrial [Member]
Loans and Leases [Abstract]
Loans and leases, net	21	792
Total Past Due and Nonaccrual [Member] | Agricultural [Member]
Loans and Leases [Abstract]
Loans and leases, net	0	36
Total Past Due and Nonaccrual [Member] | Commercial Leases [Member]
Loans and Leases [Abstract]
Loans and leases, net	0	0
Total Past Due and Nonaccrual [Member] | Consumer and Other [Member]
Loans and Leases [Abstract]
Loans and leases, net	9	5
Current [Member]
Loans and Leases [Abstract]
Loans and leases, net	3,622,473	3,677,385
Current [Member] | Commercial [Member]
Loans and Leases [Abstract]
Loans and leases, net	1,402,163	1,353,101
Current [Member] | Agricultural [Member]
Loans and Leases [Abstract]
Loans and leases, net	719,902	751,026
Current [Member] | Residential and Home Equity [Member]
Loans and Leases [Abstract]
Loans and leases, net	401,848	404,399
Current [Member] | Construction [Member]
Loans and Leases [Abstract]
Loans and leases, net	173,827	194,903
Current [Member] | Real Estate [Member]
Loans and Leases [Abstract]
Loans and leases, net	2,697,740	2,703,429
Current [Member] | Commercial & Industrial [Member]
Loans and Leases [Abstract]
Loans and leases, net	491,526	503,611
Current [Member] | Agricultural [Member]
Loans and Leases [Abstract]
Loans and leases, net	261,450	289,811
Current [Member] | Commercial Leases [Member]
Loans and Leases [Abstract]
Loans and leases, net	166,734	175,455
Current [Member] | Consumer and Other [Member]
Loans and Leases [Abstract]
Loans and leases, net	$ 5,023	$ 5,079