SHAREHOLDERS' EQUITY - Actual regulatory capital position and minimum capital requirements (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Salisbury
Total Capital (to risk-weighted assets)
Actual - Amount	$ 104,815	$ 98,920
Actual - Ratio	12.26%	12.94%
For Capital Adequacy - Amount	$ 68,400	$ 61,154
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	$ 86,961	$ 82,034
Actual - Ratio	10.17%	10.73%
For Capital Adequacy - Amount	$ 51,300	$ 45,865
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	$ 86,961	$ 82,034
Actual - Ratio	10.17%	10.73%
For Capital Adequacy - Amount	$ 38,475	$ 34,399
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	$ 86,961	$ 83,034
Actual - Ratio	8.02%	8.53%
For Capital Adequacy - Amount	$ 43,396	$ 38,461
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	$ 101,836	$ 95,810
Actual - Ratio	11.91%	12.54%
For Capital Adequacy - Amount	$ 68,400	$ 61,130
For Capital Adequacy - Ratio	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 85,500	$ 76,413
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	10.00%	10.00%
Tier 1 Capital (to risk-weighted assets)
Actual - Amount	$ 93,983	$ 88,924
Actual - Ratio	10.99%	11.64%
For Capital Adequacy - Amount	$ 51,300	$ 45,848
For Capital Adequacy - Ratio	6.00%	6.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 68,400	$ 61,130
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	$ 93,983	$ 88,924
Actual - Ratio	10.99%	11.64%
For Capital Adequacy - Amount	$ 38,475	$ 34,386
For Capital Adequacy - Ratio	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 55,575	$ 49,668
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	6.50%	6.50%
Tier 1 Capital (to average assets)
Actual - Amount	$ 93,983	$ 88,924
Actual - Ratio	8.66%	9.25%
For Capital Adequacy - Amount	$ 43,396	$ 38,461
For Capital Adequacy - Ratio	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount	$ 54,245	$ 48,076
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio	5.00%	5.00%