Segment Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) segment	Mar. 31, 2021 USD ($) segment	Dec. 31, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | segment	3	3
Net interest income	$ 2,895	$ 2,843
Provision for loan losses	150	135
Net interest income after provision for loan losses	2,745	2,708
Total noninterest income	616	612
Compensation and benefits	1,235	1,259
Other noninterest expense	(303)	(264)
Income before income taxes	471	432
Income tax expense	75	79
Net income	396	353
Total assets	377,471		$ 378,949
Operating segment
Segment Reporting Information [Line Items]
Net interest income	2,895	2,843
Provision for loan losses	150	135
Net interest income after provision for loan losses	2,745	2,708
Total noninterest income	616	612
Compensation and benefits	(1,235)	(1,259)
Other noninterest expense	(1,655)	(1,629)
Income before income taxes	471	432
Income tax expense	75	79
Net income	396	353
Total assets	392,168		395,225
Operating segment | Community Banking Activities
Segment Reporting Information [Line Items]
Net interest income	2,835	2,780
Provision for loan losses	150	135
Net interest income after provision for loan losses	2,685	2,645
Total noninterest income	421	439
Compensation and benefits	(1,149)	(1,158)
Other noninterest expense	(1,604)	(1,561)
Income before income taxes	353	365
Income tax expense	68	72
Net income	285	293
Operating segment | Insurance Activities
Segment Reporting Information [Line Items]
Total noninterest income	195	173
Compensation and benefits	(86)	(101)
Other noninterest expense	(30)	(37)
Income before income taxes	79	35
Net income	79	35
Operating segment | Municipal Banking Activities
Segment Reporting Information [Line Items]
Net interest income	60	63
Net interest income after provision for loan losses	60	63
Other noninterest expense	(21)	(31)
Income before income taxes	39	32
Income tax expense	7	7
Net income	32	$ 25
Elimination of intercompany balances
Segment Reporting Information [Line Items]
Total assets	$ (14,697)		$ (16,276)