Loans, Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Allowance for loan losses [Roll Forward]
Balance, beginning of period	$ 5,530	$ 5,679	$ 5,506	$ 5,728
Provision (credit) charged to expenses	377	(15)	426	(67)
Losses charged off	(116)	(24)	(153)	(66)
Recoveries	42	12	54	57
Balance, end of period	5,833	5,652	5,833	5,652
Commercial and industrial [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of period	1,297	957	1,095	816
Provision (credit) charged to expenses	(10)	86	192	227
Losses charged off	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	1,287	1,043	1,287	1,043
Commercial Secured By Real Estate [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of period	3,494	3,634	3,607	3,903
Provision (credit) charged to expenses	398	109	285	(158)
Losses charged off	(67)	0	(67)	(2)
Recoveries	0	0	0	0
Balance, end of period	3,825	3,743	3,825	3,743
Residential Real Estate [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of period	639	919	665	837
Provision (credit) charged to expenses	(32)	(223)	(54)	(152)
Losses charged off	0	0	(5)	(16)
Recoveries	18	1	19	28
Balance, end of period	625	697	625	697
Consumer [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of period	73	131	105	153
Provision (credit) charged to expenses	(6)	(8)	(33)	(28)
Losses charged off	0	(2)	(5)	(5)
Recoveries	0	1	0	2
Balance, end of period	67	122	67	122
Agricultural [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of period	18	39	30	28
Provision (credit) charged to expenses	0	(2)	(12)	9
Losses charged off	0	0	0	0
Recoveries	0	0	0	0
Balance, end of period	18	37	18	37
Other [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of period	9	(1)	4	(9)
Provision (credit) charged to expenses	27	23	48	35
Losses charged off	(49)	(22)	(76)	(43)
Recoveries	24	10	35	27
Balance, end of period	$ 11	$ 10	$ 11	$ 10