Regulatory Matters - Schedule of Regulatory Capital (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Total capital to risk-weighted assets: Amount
Actual	$ 58,605	$ 56,090
For capital adequacy purposes	36,945	32,070
To be well capitalized	46,181	40,087
Tier 1 capital to risk-weighted assets: Amount
Actual	53,050	51,073
For capital adequacy purposes	27,709	24,052
To be well capitalized	36,945	32,070
Common Equity Tier 1 capital to risk-weighted assets: Amount
Actual	53,050	51,073
For capital adequacy purposes	20,781	18,039
To be well capitalized	30,018	26,057
Tier 1 capital to average assets: Amount
Actual	53,050	51,073
For capital adequacy purposes	27,081	23,131
To be well capitalized	$ 33,852	$ 28,914
Total capital to risk-weighted assets: Ratio
Actual	12.69%	13.99%
For capital adequacy purposes	8.00%	8.00%
To be well capitalized	10.00%	10.00%
Tier 1 capital to risk-weighted assets: Ratios
Actual	11.49%	12.74%
For capital adequacy purposes	6.00%	6.00%
To be well capitalized	8.00%	8.00%
Common Equity Tier One Risk Based Capital To Risk Weighted Assets, Amount [Abstract]
Actual	11.49%	12.74%
For capital adequacy purposes	4.50%	4.50%
To be well capitalized	6.50%	6.50%
Tier 1 capital to average assets: Ratio
Actual	7.84%	8.83%
For capital adequacy purposes	4.00%	4.00%
To be well capitalized	5.00%	5.00%