Summary of Significant Accounting Policies (Narrative) (Details) $ in Thousands		3 Months Ended	12 Months Ended
	Jan. 01, 2019 USD ($) contract	Dec. 31, 2017 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Foreclosed real estate			$ 779	$ 678
Proceeds from sale of foreclosed real estate			81	1,510	$ 331
Net gain on sale of foreclosed real estate			5	44	8
Total advertising expense			$ 708	$ 606	$ 596
Federal tax rate			21.00%	21.00%	34.00%
Income tax expense due to net deferred tax asset remeasurement resulting from enactment of Tax Act		$ 262			$ 262	[1]
Required reserve funds in cash or on deposit with Federal Reserve Bank			$ 2,914	$ 2,790
Operating lease liabilities			801
Operating lease ROU assets			$ 776
Accounting Standards Update 2016-02 [Member]
Operating lease liabilities	$ 916
Operating lease ROU assets	$ 904
Number of operating leases related to branch office space | contract	2
Cumulative effect of adoption of revised ASC Topic 220	$ 10
Buildings [Member]
Property, plant and equipment, useful life			39 years
Minimum [Member] | Furniture and Equipment [Member]
Property, plant and equipment, useful life			3 years
Maximum [Member] | Furniture and Equipment [Member]
Property, plant and equipment, useful life			15 years

[1] Represents a charge to write-down deferred tax assets due to the enactment of the Tax Act.