Regulatory Capital - Schedule of Actual Capital Positions and Ratios (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Banking and Thrift [Abstract]
Tangible Capital, Actual, Amount	$ 11,830	$ 11,912
Tangible Capital, Actual, Ratio	14.34%	15.00%
Tangible Capital, Minimum Capital Requirements, Amount	$ 1,237	$ 1,191
Tangible Capital, Minimum Capital Requirements, Ratio	1.50%	1.50%
Tangible Capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Amount
Tangible Capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio
Tangible Capital, To be Well Capitalized With Capital Conservation Buffer, Amount
Tangible Capital, To be Well Capitalized With Capital Conservation Buffer, Ratio
Total Risk-based Capital, Actual, Amount	$ 12,264	$ 12,320
Total Risk-based Capital, Actual, Ratio	26.94%	26.76%
Total Risk-based Capital, Minimum Capital Requirements, Amount	$ 4,781	$ 4,546
Total Risk-based Capital, Minimum Capital Requirements, Ratio	10.50%	9.875%
Total Risk-based Capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 4,553	$ 4,603
Total Risk-based Capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%	10.00%
Total Risk-based Capital, To be Well Capitalized With Capital Conservation Buffer, Amount	$ 4,781	$ 4,603
Total Risk-based Capital, To be Well Capitalized With Capital Conservation Buffer, Ratio	10.50%	10.00%
Common Equity Tier I Capital, Actual, Amount	$ 11,830	$ 11,912
Common Equity Tier I Capital, Actual, Ratio	25.98%	25.88%
Common Equity Tier I Capital, Minimum Capital Requirements, Amount	$ 3,187	$ 2,935
Common Equity Tier I Capital, Minimum Capital Requirements, Ratio	7.00%	6.375%
Common Equity Tier I Capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 2,960	$ 2,992
Common Equity Tier I Capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%	6.50%
Common Equity Tier I Capital, To be Well Capitalized With Capital Conservation Buffer, Amount	$ 3,187	$ 2,992
Common Equity Tier I Capital, To be Well Capitalized With Capital Conservation Buffer, Ratio	7.00%	6.50%
Tier I Risked-based Capital, Actual, Amount	$ 11,830	$ 11,912
Tier I Risked-based Capital, Actual, Ratio	25.98%	25.88%
Tier I Risked-based Capital, Minimum Capital Requirements, Amount	$ 3,870	$ 3,625
Tier I Risked-based Capital, Minimum Capital Requirements, Ratio	8.50%	7.875%
Tier I Risked-based Capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 3,642	$ 3,683
Tier I Risked-based Capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8.00%	8.00%
Tier I Risked-based Capital, To be Well Capitalized With Capital Conservation Buffer, Amount	$ 3,870	$ 3,683
Tier I Risked-based Capital, To be Well Capitalized With Capital Conservation Buffer, Ratio	8.50%	8.00%
Tier 1 Leverage Capital, Actual, Amount	$ 11,830	$ 11,912
Tier 1 Leverage Capital, Actual, Ratio	14.34%	15.00%
Tier 1 Leverage Capital, Minimum Capital Requirements, Amount	$ 3,299	$ 3,177
Tier 1 Leverage Capital, Minimum Capital Requirements, Ratio	4.00%	4.00%
Tier 1 Leverage Capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 4,124	$ 3,971
Tier 1 Leverage Capital, To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%	5.00%
Tier 1 Leverage Capital, To be Well Capitalized With Capital Conservation Buffer, Amount
Tier 1 Leverage Capital, To be Well Capitalized With Capital Conservation Buffer, Ratio