Loans and Leases - Changes in ACL on Loans and Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Loans and Leases [Abstract]
Balance at beginning of period	$ 75,283	$ 74,965
Balance at beginning of period	2,690	3,690
Balance at beginning of period	77,973	78,655
Provision for/(reversal of) credit losses	2,890	1,000
Provision for/(reversal of) credit losses	610	(1,000)
Provision for/(reversal of) credit losses	3,500	0
Charge-offs	(2,016)	(858)
Charge-offs	0	0
Charge-offs	(2,016)	(858)
Recoveries	218	176
Recoveries	0	0
Recoveries	218	176
Net (charge-offs)/recoveries	(1,798)	(682)
Net (charge-offs)/recoveries	0	0
Net (charge-offs)/recoveries	(1,798)	(682)
Balance at end of period	76,375	75,283
Balance at end of period	3,300	2,690
Balance at end of period	79,675	77,973
Commercial [Member]
Loans and Leases [Abstract]
Balance at beginning of period	20,382	26,093
Provision for/(reversal of) credit losses	2,572	(5,711)
Charge-offs	(380)	0
Recoveries	0	0
Balance at end of period	22,574	20,382
Agricultural [Member]
Loans and Leases [Abstract]
Balance at beginning of period	23,615	7,744
Provision for/(reversal of) credit losses	1,146	15,871
Charge-offs	(1,119)	0
Recoveries	5	0
Balance at end of period	23,647	23,615
Residential and Home Equity [Member]
Loans and Leases [Abstract]
Balance at beginning of period	7,340	7,770
Provision for/(reversal of) credit losses	270	(424)
Charge-offs	0	(29)
Recoveries	10	23
Balance at end of period	7,620	7,340
Construction [Member]
Loans and Leases [Abstract]
Balance at beginning of period	3,055	4,432
Provision for/(reversal of) credit losses	(744)	(1,377)
Charge-offs	0	0
Recoveries	0	0
Balance at end of period	2,311	3,055
Real Estate [Member]
Loans and Leases [Abstract]
Balance at beginning of period	54,392	46,039
Provision for/(reversal of) credit losses	3,244	8,359
Charge-offs	(1,499)	(29)
Recoveries	15	23
Balance at end of period	56,152	54,392
Commercial & Industrial [Member]
Loans and Leases [Abstract]
Balance at beginning of period	7,791	13,380
Provision for/(reversal of) credit losses	(359)	(4,939)
Charge-offs	(233)	(736)
Recoveries	156	86
Balance at end of period	7,355	7,791
Agricultural [Member]
Loans and Leases [Abstract]
Balance at beginning of period	6,725	8,872
Provision for/(reversal of) credit losses	245	(2,163)
Charge-offs	(234)	0
Recoveries	24	16
Balance at end of period	6,760	6,725
Commercial Leases [Member]
Loans and Leases [Abstract]
Balance at beginning of period	6,153	6,537
Provision for/(reversal of) credit losses	(292)	(384)
Charge-offs	0	0
Recoveries	0	0
Balance at end of period	5,861	6,153
Consumer and Other [Member]
Loans and Leases [Abstract]
Balance at beginning of period	222	137
Provision for/(reversal of) credit losses	52	127
Charge-offs	(50)	(93)
Recoveries	23	51
Balance at end of period	$ 247	$ 222