CAPITAL: (Details) - Bank - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Total Capital to Risk Weighted Assets, Actual, Amount	$ 68,976	$ 68,787
Total Capital to Risk Weighted Assets, Actual, Ratio	15.21%	15.30%
Total Capital to Risk Weighted Assets, Minimum Capital Requirement, Amount	$ 36,273	$ 35,970
Total Capital to Risk Weighted Assets, Minimum Capital Requirement, Ratio	8.00%	8.00%
Total Capital to Risk Weighted Assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 45,341	$ 44,962
Total Capital to Risk Weighted Assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%	10.00%
Tier 1 Capital Risk Weighted Assets, Actual, Amount	$ 63,331	$ 63,160
Tier 1 Capital Risk Weighted Assets, Actual, Ratio	13.97%	14.05%
Tier 1 Capital Risk Weighted Assets, Minimum Capital Requirement, Amount	$ 27,205	$ 26,977
Tier 1 Capital Risk Weighted Assets, Minimum Capital Requirement, Ratio	6.00%	6.00%
Tier 1 Capital Risk Weighted Assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 36,273	$ 35,970
Tier 1 Capital Risk Weighted Assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8.00%	8.00%
Tier 1 Capital to Average Assets, Actual, Amount	$ 63,331	$ 63,160
Tier 1 Capital to Average Assets, Actual, Ratio	9.56%	9.56%
Tier 1 Capital to Average Assets, Minimum Capital Requirement, Amount	$ 26,505	$ 26,422
Tier 1 Capital to Average Assets, Minimum Capital Requirement, Ratio	4.00%	4.00%
Tier 1 Capital to Average Assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 33,131	$ 33,028
Tier 1 Capital to Average Assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%	5.00%
Common Equity Tier 1 Capital to Risk Weighted Assets, Actual, Amount	$ 63,331	$ 63,160
Common Equity Tier 1 Capital to Risk Weighted Assets, Actual, Ratio	13.97%	14.05%
Common Equity Tier 1 Capital to Risk Weighted Assets, Minimum Capital Requirement, Amount	$ 20,403	$ 20,233
Common Equity Tier 1 Capital to Risk Weighted Assets, Minimum Capital Requirement, Ratio	4.50%	4.50%
Common Equity Tier 1 Capital to Risk Weighted Assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 29,472	$ 29,225
Common Equity Tier 1 Capital to Risk Weighted Assets, Minimum to Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%	6.50%