Regulatory Matters - Schedule of Actual and Required Capital Amounts and Ratios (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Regulatory Matters
Tier-1 Leverage	$ 46,793	$ 43,954
Tier 1 Leverage, ratio (as a percent)	10.77%	10.60%
Common Equity Tier 1	$ 46,793	$ 43,954
Common Equity Tier 1, ratio (as a percent)	15.39%	15.36%
Tier 1	$ 46,793	$ 43,954
Tier 1, ratio (as a percent)	15.39%	15.36%
Total Capital	$ 50,602	$ 47,544
Total Capital, ratio (as a percent)	16.64%	16.62%
Leverage required for capital adequacy purposes	$ 17,379	$ 16,594
Leverage required for capital adequacy purposes, ratio (as a percent)	4.00%	4.00%
Common Equity Tier 1 required for capital adequacy purposes	$ 13,685	$ 12,875
Common Equity Tier 1 required for capital adequacy purposes, ratio (as a percent)	4.50%	4.50%
Tier 1 required for capital adequacy purposes	$ 18,246	$ 17,166
Tier 1 required for capital adequacy purposes, ratio (as a percent)	6.00%	6.00%
Total capital required for capital adequacy purposes	$ 24,328	$ 22,888
Total capital required for capital adequacy purposes, ratio (as a percent)	8.00%	8.00%