Regulatory Matters (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
The Bank [Member]
Summary of capital amounts and ratios of the Bank and the Company and the regulatory minimum requirements
Total Capital (to risk weighted assets) Actual	$ 175,016	$ 132,839
Total Capital (to risk weighted assets) Actual, Ratio	12.99%	11.69%
Total Capital (to risk weighted assets) For capital adequacy purposes minimum	$ 107,749	$ 90,910
Total Capital (to risk weighted assets) For capital adequacy purposes minimum, Ratio	8.00%	8.00%
Total Capital (to risk weighted assets) To be well capitalized under prompt corrective action provisions minimum	$ 134,686	$ 113,628
Total Capital (to risk weighted assets) To be well capitalized under prompt corrective action provisions minimum, Ratio	10.00%	10.00%
Tier 1 Capital (to risk weighted assets) Actual	$ 159,493	$ 118,626
Tier 1 Capital (to risk weighted assets) Actual, Ratio	11.84%	10.44%
Tier 1 Capital (to risk weighted assets) For capital adequacy purposes minimum	$ 80,812	$ 68,183
Tier 1 Capital (to risk weighted assets) For capital adequacy purposes minimum, Ratio	6.00%	6.00%
Tier 1 Capital (to risk weighted assets) To be well capitalized under prompt corrective action provisions minimum	$ 107,749	$ 90,910
Tier 1 Capital (to risk weighted assets) To be well capitalized under prompt corrective action provisions minimum, Ratio	8.00%	8.00%
Common Equity Tier 1 Capital (to risk weighted assets) Actual	$ 159,493	$ 118,626
Common Equity Tier 1 Capital (to risk weighted assets) Actual, Ratio	11.84%	10.44%
Common Equity Tier 1 Capital (to risk weighted assets) For capital adequacy purposes minimum	$ 60,609	$ 51,137
Common Equity Tier 1 Capital (to risk weighted assets) For capital adequacy purposes minimum, Ratio	4.50%	4.50%
Common Equity Tier 1 Capital (to risk weighted assets) To be well capitalized under prompt corrective action provisions minimum	$ 87,546	$ 73,864
Common Equity Tier 1 Capital (to risk weighted assets) To be well capitalized under prompt corrective action provisions minimum, Ratio	6.50%	6.50%
Tier 1 Capital (to average assets) Actual	$ 159,493	$ 118,626
Tier 1 Capital (to average assets), Actual Ratio	10.04%	9.08%
Tier 1 Capital (to average assets) For capital adequacy purposes minimum	$ 63,573	$ 52,273
Tier 1 Capital (to average assets) For capital adequacy purposes minimum, Ratio	4.00%	4.00%
Tier 1 Capital (to average assets) To be well capitalized under prompt corrective action provisions minimum	$ 79,466	$ 65,342
Tier 1 Capital (to average assets) To be well capitalized under prompt corrective action provisions minimum, Ratio	5.00%	5.00%
The Company [Member]
Summary of capital amounts and ratios of the Bank and the Company and the regulatory minimum requirements
Total Capital (to risk weighted assets) Actual	$ 178,665	$ 137,588
Total Capital (to risk weighted assets) Actual, Ratio	13.27%	12.11%
Total Capital (to risk weighted assets) For capital adequacy purposes minimum	$ 107,749	$ 90,910
Total Capital (to risk weighted assets) For capital adequacy purposes minimum, Ratio	8.00%	8.00%
Total Capital (to risk weighted assets) To be well capitalized under prompt corrective action provisions minimum
Total Capital (to risk weighted assets) To be well capitalized under prompt corrective action provisions minimum, Ratio
Tier 1 Capital (to risk weighted assets) Actual	$ 163,142	$ 123,375
Tier 1 Capital (to risk weighted assets) Actual, Ratio	12.11%	10.86%
Tier 1 Capital (to risk weighted assets) For capital adequacy purposes minimum	$ 80,812	$ 68,183
Tier 1 Capital (to risk weighted assets) For capital adequacy purposes minimum, Ratio	6.00%	6.00%
Tier 1 Capital (to risk weighted assets) To be well capitalized under prompt corrective action provisions minimum
Tier 1 Capital (to risk weighted assets) To be well capitalized under prompt corrective action provisions minimum, Ratio
Common Equity Tier 1 Capital (to risk weighted assets) Actual	$ 150,142	$ 110,375
Common Equity Tier 1 Capital (to risk weighted assets) Actual, Ratio	11.15%	9.71%
Common Equity Tier 1 Capital (to risk weighted assets) For capital adequacy purposes minimum	$ 60,609	$ 51,137
Common Equity Tier 1 Capital (to risk weighted assets) For capital adequacy purposes minimum, Ratio	4.50%	4.50%
Common Equity Tier 1 Capital (to risk weighted assets) To be well capitalized under prompt corrective action provisions minimum
Common Equity Tier 1 Capital (to risk weighted assets) To be well capitalized under prompt corrective action provisions minimum, Ratio
Tier 1 Capital (to average assets) Actual	$ 163,142	$ 123,375
Tier 1 Capital (to average assets), Actual Ratio	10.26%	9.42%
Tier 1 Capital (to average assets) For capital adequacy purposes minimum	$ 63,573	$ 52,392
Tier 1 Capital (to average assets) For capital adequacy purposes minimum, Ratio	4.00%	4.00%
Tier 1 Capital (to average assets) To be well capitalized under prompt corrective action provisions minimum
Tier 1 Capital (to average assets) To be well capitalized under prompt corrective action provisions minimum, Ratio

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The amount of total capital as defined in the regulations.

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Tier 1 Risk Based Capital as defined in the regulations.

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Tier 1 capital divided by risk weighted assets as defined by regulations.

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