Loans, Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Allowance for loan losses [Roll Forward]
Balance, beginning of period	$ 5,646	$ 5,506
Provision for (recovery of) credit losses	(57)	49
Losses charged off	(36)	(37)
Recoveries	20	12
Balance, end of period	7,858	5,530
Financing Receivable, Credit Loss, Expense (Reversal)	$ 32	$ 49
Ratio Of Net Charge-Offs To Average Loans	0.00%	0.00%
Accounting Standards Update 2016-13
Allowance for loan losses [Roll Forward]
Balance, beginning of period	$ 2,196
Commercial and industrial [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of period	1,300	$ 1,095
Losses charged off	0	0
Recoveries	0	0
Balance, end of period	1,047	1,297
Financing Receivable, Credit Loss, Expense (Reversal)	$ 259	$ 202
Ratio Of Net Charge-Offs To Average Loans	0.00%	0.00%
Commercial and industrial [Member] | Accounting Standards Update 2016-13
Allowance for loan losses [Roll Forward]
Balance, beginning of period	$ (512)
Commercial Secured By Real Estate [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of period	3,609	$ 3,607
Losses charged off	0	0
Recoveries	0	0
Balance, end of period	4,927	3,494
Financing Receivable, Credit Loss, Expense (Reversal)	$ (122)	$ (113)
Ratio Of Net Charge-Offs To Average Loans	0.00%	0.00%
Commercial Secured By Real Estate [Member] | Accounting Standards Update 2016-13
Allowance for loan losses [Roll Forward]
Balance, beginning of period	$ 1,440
Residential Real Estate [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of period	624	$ 665
Losses charged off	0	(5)
Recoveries	0	1
Balance, end of period	1,351	639
Financing Receivable, Credit Loss, Expense (Reversal)	$ (109)	$ (22)
Ratio Of Net Charge-Offs To Average Loans	0.00%	0.00%
Residential Real Estate [Member] | Accounting Standards Update 2016-13
Allowance for loan losses [Roll Forward]
Balance, beginning of period	$ 836
Consumer [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of period	86	$ 105
Losses charged off	(5)	(5)
Recoveries	2	0
Balance, end of period	526	73
Financing Receivable, Credit Loss, Expense (Reversal)	$ (3)	$ (27)
Ratio Of Net Charge-Offs To Average Loans	0.01%	0.01%
Consumer [Member] | Accounting Standards Update 2016-13
Allowance for loan losses [Roll Forward]
Balance, beginning of period	$ 446
Agricultural [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of period	22	$ 30
Losses charged off	0	0
Recoveries	0	0
Balance, end of period	7	18
Financing Receivable, Credit Loss, Expense (Reversal)	$ (6)	$ (12)
Ratio Of Net Charge-Offs To Average Loans	0.00%	0.00%
Agricultural [Member] | Accounting Standards Update 2016-13
Allowance for loan losses [Roll Forward]
Balance, beginning of period	$ (9)
Other [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of period	5	$ 4
Losses charged off	(31)	(27)
Recoveries	18	11
Balance, end of period	0	9
Financing Receivable, Credit Loss, Expense (Reversal)	$ 13	$ 21
Ratio Of Net Charge-Offs To Average Loans	18.18%	19.16%
Other [Member] | Accounting Standards Update 2016-13
Allowance for loan losses [Roll Forward]
Balance, beginning of period	$ (5)