Segment Reporting (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) Segment Area	Dec. 31, 2018 USD ($)
Revenues [Abstract]
Interest and dividend income	$ 40,241	$ 38,219
Total operating income	54,318	51,528
Expenses [Abstract]
Interest expense	6,422	4,969
Provision for loan losses	318	2,861
Salaries and employee benefits	24,024	22,580
Other expenses	14,614	15,920
Total operating expenses	45,378	46,330
Income before income taxes	8,940	5,198
Income tax expense (benefit)	1,080	279
Net income	7,860	4,919
Capital expenditures	1,782	478
Total assets	$ 1,054,488	1,038,183
Number of principal business segments | Segment	3
Number of geographical areas in which an entity operates | Area	1
Income from Fiduciary Activities [Member]
Revenues [Abstract]
Noninterest revenue	$ 3,850	3,726
Other Income [Member]
Revenues [Abstract]
Noninterest revenue	10,227	9,583
Operating Segments [Member] | Bank [Member]
Revenues [Abstract]
Interest and dividend income	40,121	38,122
Total operating income	49,381	46,711
Expenses [Abstract]
Interest expense	6,310	4,870
Provision for loan losses	318	2,861
Salaries and employee benefits	20,405	19,150
Other expenses	13,508	14,078
Total operating expenses	40,541	40,959
Income before income taxes	8,840	5,752
Income tax expense (benefit)	1,054	256
Net income	7,786	5,496
Capital expenditures	1,756	478
Total assets	1,048,158	1,032,676
Operating Segments [Member] | Bank [Member] | Income from Fiduciary Activities [Member]
Revenues [Abstract]
Noninterest revenue	0	0
Operating Segments [Member] | Bank [Member] | Other Income [Member]
Revenues [Abstract]
Noninterest revenue	9,260	8,589
Operating Segments [Member] | Trust [Member]
Revenues [Abstract]
Interest and dividend income	120	95
Total operating income	4,998	4,847
Expenses [Abstract]
Interest expense	0	0
Provision for loan losses	0	0
Salaries and employee benefits	3,142	2,977
Other expenses	1,015	1,086
Total operating expenses	4,157	4,063
Income before income taxes	841	784
Income tax expense (benefit)	181	166
Net income	660	618
Capital expenditures	26	0
Total assets	6,695	6,226
Operating Segments [Member] | Trust [Member] | Income from Fiduciary Activities [Member]
Revenues [Abstract]
Noninterest revenue	3,850	3,726
Operating Segments [Member] | Trust [Member] | Other Income [Member]
Revenues [Abstract]
Noninterest revenue	1,028	1,026
Operating Segments [Member] | Parent [Member]
Revenues [Abstract]
Interest and dividend income	8,446	6,116
Total operating income	8,646	6,346
Expenses [Abstract]
Interest expense	112	99
Provision for loan losses	0	0
Salaries and employee benefits	477	453
Other expenses	352	1,018
Total operating expenses	941	1,570
Income before income taxes	7,705	4,776
Income tax expense (benefit)	(155)	(143)
Net income	7,860	4,919
Capital expenditures	0	0
Total assets	111,764	104,592
Operating Segments [Member] | Parent [Member] | Income from Fiduciary Activities [Member]
Revenues [Abstract]
Noninterest revenue	0	0
Operating Segments [Member] | Parent [Member] | Other Income [Member]
Revenues [Abstract]
Noninterest revenue	200	230
Eliminations [Member]
Revenues [Abstract]
Interest and dividend income	(8,446)	(6,114)
Total operating income	(8,707)	(6,376)
Expenses [Abstract]
Interest expense	0	0
Provision for loan losses	0	0
Salaries and employee benefits	0	0
Other expenses	(261)	(262)
Total operating expenses	(261)	(262)
Income before income taxes	(8,446)	(6,114)
Income tax expense (benefit)	0	0
Net income	(8,446)	(6,114)
Capital expenditures	0	0
Total assets	(112,129)	(105,311)
Eliminations [Member] | Income from Fiduciary Activities [Member]
Revenues [Abstract]
Noninterest revenue	0	0
Eliminations [Member] | Other Income [Member]
Revenues [Abstract]
Noninterest revenue	$ (261)	$ (262)