Regulatory Matters - Schedule of actual and required capital amounts and ratios (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Regulatory Matters
Tier-1 Leverage	$ 46,751	$ 46,028
Tier 1 Leverage, ratio (as a percent)	12.02%	11.56%
Common Equity Tier 1	$ 46,751	$ 46,028
Common Equity Tier 1, ratio (as a percent)	19.19%	19.45%
Tier 1	$ 46,751	$ 46,028
Tier 1, ratio (as a percent)	19.19%	19.45%
Total Capital	$ 49,814	$ 49,010
Total Capital, ratio (as a percent)	20.45%	20.71%
Leverage required for capital adequacy purposes	$ 15,560	$ 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	$ 10,960	$ 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	$ 14,614	$ 14,200
Tier 1 required for capital adequacy purposes, ratio (as a percent)	6.00%	6.00%
Total capital required for capital adequacy purposes	$ 19,485	$ 18,933
Total capital required for capital adequacy purposes, ratio (as a percent)	8.00%	8.00%