Capital and Regulatory Matters - Schedule of Actual and Required Capital Amounts and Ratios (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Capital and Regulatory Matters
Tier-1 Leverage	$ 43,954	$ 46,028
Tier 1 Leverage, ratio (as a percent)	10.60%	11.56%
Common Equity Tier 1	$ 43,954	$ 46,028
Common Equity Tier 1, ratio (as a percent)	15.36%	19.45%
Tier 1	$ 43,954	$ 46,028
Tier 1, ratio (as a percent)	15.36%	19.45%
Total Capital	$ 47,544	$ 49,010
Total Capital, ratio (as a percent)	16.62%	20.71%
Leverage required for capital adequacy purposes	$ 16,594	$ 15,923
Leverage required for capital adequacy purposes, ratio (as a percent)	4.00%	4.00%
Common Equity Tier 1 required for capital adequacy purposes	$ 12,875	$ 10,650
Common Equity Tier 1 required for capital adequacy purposes, ratio (as a percent)	4.50%	4.50%
Tier 1 required for capital adequacy purposes	$ 17,166	$ 14,200
Tier 1 required for capital adequacy purposes, ratio (as a percent)	6.00%	6.00%
Total capital required for capital adequacy purposes	$ 22,888	$ 18,933
Total capital required for capital adequacy purposes, ratio (as a percent)	8.00%	8.00%