Regulatory Matters (Details) - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Common Equity Tier 1 Capital (to risk-weighted assets) [Abstract]
Common Equity Tier I Capital Actual, Amount	[1]	$ 104,318	$ 98,970
Common Equity Tier I Capital, Ratio	[1]	16.80%	16.50%
Common Equity Tier I Capital for Capital Adequacy Purposes, Amount	[1]	$ 27,907	$ 26,983
Common Equity Tier I Capital for Capital Adequacy Purposes, Ratio	[1]	4.50%	4.50%
Common Equity Tier 1 Capital Minimum Capital Adequacy with Capital Buffer, Amount	[1]	$ 35,658	$ 30,730
Common Equity Tier 1 Capital Minimum Capital Adequacy with Capital Buffer, Ratio	[1]	5.80%	5.10%
Common Equity Tier I Capital To Be Well Capitalized Under Prompt Corrective Provisions, Amount	[1]	$ 40,309	$ 38,975
Common Equity Tier I Capital To Be Well Capitalized Under Prompt Corrective Provisions, Ratio	[1]	6.50%	6.50%
Total capital (to risk-weighted assets) [Abstract]
Total Capital, Actual Amount	[1]	$ 112,086	$ 106,517
Total Capital, Ratio	[1]	18.10%	17.80%
Total For Capital Adequacy Purposes, Amount	[1]	$ 49,612	$ 47,969
Total For Capital Adequacy Purposes, Ratio	[1]	8.00%	8.00%
Total For Capital Adequacy with Capital Buffer, Amount	[1]	$ 57,363	$ 51,717
Total For Capital Adequacy with Capital Buffer, Ratio	[1]	9.30%	8.60%
Total To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	[1]	$ 62,015	$ 59,962
Total Capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	[1]	10.00%	10.00%
Tier 1 capital (to risk-weighted assets) [Abstract]
Tier I Capital, Actual Amount	[1]	$ 104,318	$ 98,970
Tier I Capital, Ratio	[1]	16.80%	16.50%
Tier I Capital for Capital Adequacy Purposes, Amount	[1]	$ 37,209	$ 35,977
Tier I Capital for Capital Adequacy Purposes, Ratio	[1]	6.00%	6.00%
Tier I Capital Minimum Capital Adequacy with Capital Buffer, Amount	[1]	$ 44,961	$ 39,725
Tier I Capital Minimum Capital Adequacy with Capital Buffer, Ratio	[1]	7.30%	6.60%
Tier I Capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	[1]	$ 49,612	$ 47,969
Tier I Capital To Be Well Capitalized Under Prompt Corrective Provisions, Ratio	[1]	8.00%	8.00%
Tier 1 capital (to average quarterly assets) [Abstract]
Tier I Capital average, Actual Amount	[2]	$ 104,318	$ 98,970
Tier I Capital average, Ratio	[2]	13.30%	12.90%
Tier I Capital average for Capital Adequacy Purposes, Amount	[2]	$ 31,313	$ 30,634
Tier I Capital average for Capital Adequacy Purposes, Ratio	[2]	4.00%	4.00%
Tier I Capital Average Minimum Capital Adequacy with Capital Buffer, Amount	[2]	$ 41,099	$ 35,420
Tier I Capital Average Minimum Capital Adequacy with Capital Buffer, Ratio	[2]	5.30%	4.60%
Tier I Capital Average To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	[2]	$ 39,142	$ 38,292
Tier I Capital Average To Be Well Capitalized Under Prompt Corrective Provisions, Ratio	[2]	5.00%	5.00%

[1] to risk-weighted assets.

[2] To average quarterly assets.