Loans, Allowance for Loan Losses and Loan Portfolio by Segment (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Allowance for credit losses:
Individually evaluated for credit losses	$ 35	$ 21
Collectively evaluated for credit loss	7,823	5,625
Acquired credit impaired loans		0
Allowance for loan losses	7,858	5,646	$ 5,530	$ 5,506
Loans:
Individually evaluated for credit losses	2,828	1,559
Collectively evaluated for credit loss	1,392,002	1,397,705
Loans gross	1,394,830	1,401,278
Financial Asset Acquired with Credit Deterioration [Member]
Loans:
Acquired credit impaired loans		2,014
Commercial and industrial [Member]
Allowance for credit losses:
Individually evaluated for credit losses	19	4
Collectively evaluated for credit loss	1,028	1,296
Acquired credit impaired loans		0
Allowance for loan losses	1,047	1,300	1,297	1,095
Loans:
Individually evaluated for credit losses	224	114
Collectively evaluated for credit loss	124,130	119,799
Loans gross	124,354	120,327
Commercial and industrial [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans:
Acquired credit impaired loans		414
Commercial Secured By Real Estate [Member]
Allowance for credit losses:
Individually evaluated for credit losses	10	11
Collectively evaluated for credit loss	4,917	3,598
Acquired credit impaired loans		0
Allowance for loan losses	4,927	3,609	3,494	3,607
Loans:
Individually evaluated for credit losses	1,675	963
Collectively evaluated for credit loss	928,831	934,568
Loans gross	930,506	936,255
Commercial Secured By Real Estate [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans:
Acquired credit impaired loans		724
Residential Real Estate [Member]
Allowance for credit losses:
Individually evaluated for credit losses	6	6
Collectively evaluated for credit loss	1,345	618
Acquired credit impaired loans		0
Allowance for loan losses	1,351	624	639	665
Loans:
Individually evaluated for credit losses	929	482
Collectively evaluated for credit loss	302,681	304,770
Loans gross	303,610	306,128
Residential Real Estate [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans:
Acquired credit impaired loans		876
Consumer [Member]
Allowance for credit losses:
Individually evaluated for credit losses	0	0
Collectively evaluated for credit loss	526	86
Acquired credit impaired loans		0
Allowance for loan losses	526	86	73	105
Loans:
Individually evaluated for credit losses	0	0
Collectively evaluated for credit loss	28,745	28,414
Loans gross	28,745	28,414
Consumer [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans:
Acquired credit impaired loans		0
Agricultural [Member]
Allowance for credit losses:
Individually evaluated for credit losses	0	0
Collectively evaluated for credit loss	7	22
Acquired credit impaired loans		0
Allowance for loan losses	7	22	18	30
Loans:
Individually evaluated for credit losses	0	0
Collectively evaluated for credit loss	7,553	10,073
Loans gross	7,553	10,073
Agricultural [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans:
Acquired credit impaired loans		0
Other [Member]
Allowance for credit losses:
Individually evaluated for credit losses	0	0
Collectively evaluated for credit loss	0	5
Acquired credit impaired loans		0
Allowance for loan losses	0	5	$ 9	$ 4
Loans:
Individually evaluated for credit losses	0	0
Collectively evaluated for credit loss	62	81
Loans gross	$ 62	81
Other [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Loans:
Acquired credit impaired loans		$ 0