SHAREHOLDERS' EQUITY - Actual regulatory capital position and minimum capital requirements (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Salisbury
Total Capital (to risk-weighted assets)
Actual - Amount	$ 98,920	$ 96,166
Actual - Ratio	12.94%	13.26%
For Capital Adequacy - Amount	$ 61,154	$ 57,997
For Capital Adequacy - Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio
Tier 1 Capital (to risk-weighted assets)
Actual - Amount	$ 82,034	$ 79,868
Actual - Ratio	10.73%	11.02%
For Capital Adequacy - Amount	$ 45,865	$ 43,498
For Capital Adequacy - Ratio	6.00%	6.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio
Common Equity Tier 1 Capital (to risk-weighted assets)
Actual - Amount	$ 82,034	$ 79,868
Actual - Ratio	10.73%	11.02%
For Capital Adequacy - Amount	$ 34,399	$ 32,623
For Capital Adequacy - Ratio	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio
Tier 1 Capital (to average assets)
Actual - Amount	$ 82,034	$ 79,868
Actual - Ratio	8.53%	8.69%
For Capital Adequacy - Amount	$ 38,461	$ 37,282
For Capital Adequacy - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio
Bank
Total Capital (to risk-weighted assets)
Actual - Amount	$ 95,810	$ 93,690
Actual - Ratio	12.54%	12.92%
For Capital Adequacy - Amount	$ 61,130	$ 57,996
For Capital Adequacy - Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 76,413	$ 72,495
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	10.00%	10.00%
Tier 1 Capital (to risk-weighted assets)
Actual - Amount	$ 88,924	$ 87,392
Actual - Ratio	11.64%	12.05%
For Capital Adequacy - Amount	$ 45,848	$ 43,497
For Capital Adequacy - Ratio	6.00%	6.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 61,130	$ 57,996
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	8.00%	8.00%
Common Equity Tier 1 Capital (to risk-weighted assets)
Actual - Amount	$ 88,924	$ 87,392
Actual - Ratio	11.64%	12.05%
For Capital Adequacy - Amount	$ 34,386	$ 32,623
For Capital Adequacy - Ratio	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 49,668	$ 47,122
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.50%	6.50%
Tier 1 Capital (to average assets)
Actual - Amount	$ 88,924	$ 87,392
Actual - Ratio	9.25%	9.51%
For Capital Adequacy - Amount	$ 38,461	$ 37,762
For Capital Adequacy - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 48,076	$ 45,953
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%	5.00%