SHAREHOLDERS' EQUITY - Actual regulatory capital position and minimum capital requirements (Details) $ in Thousands	Jun. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Total Capital (to risk-weighted assets)
Actual - Amount	$ 120,802	$ 114,421
Actual - Ratio	.1315	.1284
Minimum Capital Required For Capital Adequacy - Amount	$ 73,480	$ 71,278
Minimum Capital Required For Capital Adequacy - Ratio	.08	.080
Minimum Capital Required For Capital Adequacy Plus Required Capital Conservation Buffer - Amount	$ 96,443	$ 93,553
Minimum Capital Required For Capital Adequacy Plus Required Capital Conservation Buffer - Ratio	10.50%	10.50%
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 91,850	$ 89,098
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	.100	.100
Tier 1 Capital (to risk-weighted assets)
Actual - Amount	$ 109,309	$ 105,430
Actual - Ratio	.1190	.1183
Minimum Capital Required For Capital Adequacy - Amount	$ 55,110	$ 53,459
Minimum Capital Required For Capital Adequacy - Ratio	.060	.060
Minimum Capital Required For Capital Adequacy Plus Required Capital Conservation Buffer - Amount	$ 78,073	$ 75,733
Minimum Capital Required For Capital Adequacy Plus Required Capital Conservation Buffer - Ratio	8.50%	8.50%
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 73,480	$ 71,278
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.080	0.080
Common Equity Tier 1 Capital (to risk-weighted assets)
Actual - Amount	$ 109,309	$ 105,430
Actual - Ratio	.1190	.1183
Minimum Capital Required For Capital Adequacy - Amount	$ 41,333	$ 40,094
Minimum Capital Required For Capital Adequacy - Ratio	4.50%	4.50%
Minimum Capital Required For Capital Adequacy Plus Required Capital Conservation Buffer - Amount	$ 64,295	$ 62,368
Minimum Capital Required For Capital Adequacy Plus Required Capital Conservation Buffer - Ratio	7.00%	7.00%
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 59,703	$ 57,914
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.50%	6.50%
Tier 1 Capital (to average assets)
Actual - Amount	$ 109,309	$ 105,430
Actual - Ratio	.0895	.0960
Minimum Capital Required For Capital Adequacy - Amount	$ 48,856	$ 43,944
Minimum Capital Required For Capital Adequacy - Ratio	0.040	0.040
Minimum Capital Required For Capital Adequacy Plus Required Capital Conservation Buffer - Amount	$ 48,856	$ 43,944
Minimum Capital Required For Capital Adequacy Plus Required Capital Conservation Buffer - Ratio	4.00%	4.00%
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 61,071	$ 54,930
Minimum To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	0.050	0.050