Segment Reporting (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) Segment	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Segment Reporting [Abstract]
Number of principal business segments | Segment			3
Revenues [Abstract]
Interest and dividend income	$ 9,859	$ 9,848	$ 20,837	$ 19,834
Total operating income	13,397	13,806	28,509	27,070
Expenses [Abstract]
Interest expense	753	1,375	1,575	2,943
Provision for loan losses	0	300	150	600	$ 1,000
Salaries and employee benefits	6,227	5,464	12,454	11,458
Other expenses	4,308	3,740	8,639	7,776
Total operating expenses	11,288	10,879	22,818	22,777
Income before income taxes	2,109	2,927	5,691	4,293
Income tax expense (benefit)	267	433	837	549
Net income	1,842	2,494	4,854	3,744
Capital expenditures	634	294	760	662
Total assets	1,274,811	1,221,245	1,274,811	1,221,245	$ 1,226,191
Income from Fiduciary Activities [Member]
Revenues [Abstract]
Noninterest revenue	1,051	909	2,078	1,926
Other Income [Member]
Revenues [Abstract]
Noninterest revenue	2,487	3,049	5,594	5,310
Operating Segments [Member] | Bank [Member]
Revenues [Abstract]
Interest and dividend income	9,853	9,837	20,826	19,800
Total operating income	12,072	12,653	25,911	24,606
Expenses [Abstract]
Interest expense	752	1,361	1,570	2,909
Provision for loan losses	0	300	150	600
Salaries and employee benefits	5,299	4,571	10,619	9,559
Other expenses	3,999	3,452	8,062	7,134
Total operating expenses	10,050	9,684	20,401	20,202
Income before income taxes	2,022	2,969	5,510	4,404
Income tax expense (benefit)	248	441	798	570
Net income	1,774	2,528	4,712	3,834
Capital expenditures	598	288	719	656
Total assets	1,267,532	1,214,546	1,267,532	1,214,546
Operating Segments [Member] | Bank [Member] | Income from Fiduciary Activities [Member]
Revenues [Abstract]
Noninterest revenue	0	0	0	0
Operating Segments [Member] | Bank [Member] | Other Income [Member]
Revenues [Abstract]
Noninterest revenue	2,219	2,816	5,085	4,806
Operating Segments [Member] | Trust [Member]
Revenues [Abstract]
Interest and dividend income	6	11	11	34
Total operating income	1,340	1,169	2,628	2,495
Expenses [Abstract]
Interest expense	0	0	0	0
Provision for loan losses	0	0	0	0
Salaries and employee benefits	764	741	1,507	1,555
Other expenses	252	236	531	578
Total operating expenses	1,016	977	2,038	2,133
Income before income taxes	324	192	590	362
Income tax expense (benefit)	69	41	125	78
Net income	255	151	465	284
Capital expenditures	36	6	41	6
Total assets	7,213	7,008	7,213	7,008
Operating Segments [Member] | Trust [Member] | Income from Fiduciary Activities [Member]
Revenues [Abstract]
Noninterest revenue	1,051	909	2,078	1,926
Operating Segments [Member] | Trust [Member] | Other Income [Member]
Revenues [Abstract]
Noninterest revenue	283	249	539	535
Operating Segments [Member] | Parent [Member]
Revenues [Abstract]
Interest and dividend income	2,029	2,679	5,177	4,118
Total operating income	2,079	2,729	5,277	4,218
Expenses [Abstract]
Interest expense	1	14	5	34
Provision for loan losses	0	0	0	0
Salaries and employee benefits	164	152	328	344
Other expenses	122	118	176	195
Total operating expenses	287	284	509	573
Income before income taxes	1,792	2,445	4,768	3,645
Income tax expense (benefit)	(50)	(49)	(86)	(99)
Net income	1,842	2,494	4,854	3,744
Capital expenditures	0	0	0	0
Total assets	120,000	117,558	120,000	117,558
Operating Segments [Member] | Parent [Member] | Income from Fiduciary Activities [Member]
Revenues [Abstract]
Noninterest revenue	0	0	0	0
Operating Segments [Member] | Parent [Member] | Other Income [Member]
Revenues [Abstract]
Noninterest revenue	50	50	100	100
Eliminations [Member]
Revenues [Abstract]
Interest and dividend income	(2,029)	(2,679)	(5,177)	(4,118)
Total operating income	(2,094)	(2,745)	(5,307)	(4,249)
Expenses [Abstract]
Interest expense	0	0	0	0
Provision for loan losses	0	0	0	0
Salaries and employee benefits	0	0	0	0
Other expenses	(65)	(66)	(130)	(131)
Total operating expenses	(65)	(66)	(130)	(131)
Income before income taxes	(2,029)	(2,679)	(5,177)	(4,118)
Income tax expense (benefit)	0	0	0	0
Net income	(2,029)	(2,679)	(5,177)	(4,118)
Capital expenditures	0	0	0	0
Total assets	(119,934)	(117,867)	(119,934)	(117,867)
Eliminations [Member] | Income from Fiduciary Activities [Member]
Revenues [Abstract]
Noninterest revenue	0	0	0	0
Eliminations [Member] | Other Income [Member]
Revenues [Abstract]
Noninterest revenue	$ (65)	$ (66)	$ (130)	$ (131)