Loans and Allowance for Loan Losses - Schedule of Loans by Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Credit Quality Indicators [Abstract]
Loans	$ 549,364	$ 502,799	$ 463,133
Commercial and Industrial [Member]
Credit Quality Indicators [Abstract]
Loans	26,721	24,413	25,735
Commercial Real Estate [Member]
Credit Quality Indicators [Abstract]
Loans	187,797	176,827	165,271
Construction and Land [Member]
Credit Quality Indicators [Abstract]
Loans	71,409	54,162	49,777
Consumer [Member]
Credit Quality Indicators [Abstract]
Loans	5,562	5,068	3,100
Student [Member]
Credit Quality Indicators [Abstract]
Loans	9,158	10,677	13,006
Residential Real Estate [Member]
Credit Quality Indicators [Abstract]
Loans	205,945	187,104	162,383
Home Equity Lines of Credit [Member]
Credit Quality Indicators [Abstract]
Loans	42,772	44,548	$ 43,861
Pass [Member]
Credit Quality Indicators [Abstract]
Loans	523,005	469,634
Pass [Member] | Commercial and Industrial [Member]
Credit Quality Indicators [Abstract]
Loans	24,285	21,769
Pass [Member] | Commercial Real Estate [Member]
Credit Quality Indicators [Abstract]
Loans	178,525	167,625
Pass [Member] | Construction and Land [Member]
Credit Quality Indicators [Abstract]
Loans	67,767	44,006
Pass [Member] | Consumer [Member]
Credit Quality Indicators [Abstract]
Loans	5,559	5,065
Pass [Member] | Student [Member]
Credit Quality Indicators [Abstract]
Loans	9,158	10,677
Pass [Member] | Residential Real Estate [Member]
Credit Quality Indicators [Abstract]
Loans	198,566	180,119
Pass [Member] | Home Equity Lines of Credit [Member]
Credit Quality Indicators [Abstract]
Loans	39,145	40,373
Special Mention [Member]
Credit Quality Indicators [Abstract]
Loans	10,388	7,117
Special Mention [Member] | Commercial and Industrial [Member]
Credit Quality Indicators [Abstract]
Loans	1,540	1,152
Special Mention [Member] | Commercial Real Estate [Member]
Credit Quality Indicators [Abstract]
Loans	4,643	4,243
Special Mention [Member] | Construction and Land [Member]
Credit Quality Indicators [Abstract]
Loans	2,282	143
Special Mention [Member] | Consumer [Member]
Credit Quality Indicators [Abstract]
Loans	3	3
Special Mention [Member] | Student [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Special Mention [Member] | Residential Real Estate [Member]
Credit Quality Indicators [Abstract]
Loans	1,496	763
Special Mention [Member] | Home Equity Lines of Credit [Member]
Credit Quality Indicators [Abstract]
Loans	424	813
Substandard [Member]
Credit Quality Indicators [Abstract]
Loans	15,971	26,048
Substandard [Member] | Commercial and Industrial [Member]
Credit Quality Indicators [Abstract]
Loans	896	1,492
Substandard [Member] | Commercial Real Estate [Member]
Credit Quality Indicators [Abstract]
Loans	4,629	4,959
Substandard [Member] | Construction and Land [Member]
Credit Quality Indicators [Abstract]
Loans	1,360	10,013
Substandard [Member] | Consumer [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Substandard [Member] | Student [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Substandard [Member] | Residential Real Estate [Member]
Credit Quality Indicators [Abstract]
Loans	5,883	6,222
Substandard [Member] | Home Equity Lines of Credit [Member]
Credit Quality Indicators [Abstract]
Loans	3,203	3,362
Doubtful [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Doubtful [Member] | Commercial and Industrial [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Doubtful [Member] | Commercial Real Estate [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Doubtful [Member] | Construction and Land [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Doubtful [Member] | Consumer [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Doubtful [Member] | Student [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Doubtful [Member] | Residential Real Estate [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Doubtful [Member] | Home Equity Lines of Credit [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Loss [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Loss [Member] | Commercial and Industrial [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Loss [Member] | Commercial Real Estate [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Loss [Member] | Construction and Land [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Loss [Member] | Consumer [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Loss [Member] | Student [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Loss [Member] | Residential Real Estate [Member]
Credit Quality Indicators [Abstract]
Loans	0	0
Loss [Member] | Home Equity Lines of Credit [Member]
Credit Quality Indicators [Abstract]
Loans	$ 0	$ 0