SHAREHOLDERS' EQUITY - Actual regulatory capital position and minimum capital requirements (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Salisbury
Total Capital (to risk-weighted assets)
Actual - Amount	$ 98,246	$ 96,166
Actual - Ratio	13.20%	13.26%
For Capital Adequacy - Amount	$ 59,563	$ 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	$ 81,576	$ 79,868
Actual - Ratio	10.96%	11.02%
For Capital Adequacy - Amount	$ 44,672	$ 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	$ 81,576	$ 79,868
Actual - Ratio	10.96%	11.02%
For Capital Adequacy - Amount	$ 33,504	$ 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	$ 81,576	$ 79,868
Actual - Ratio	8.49%	8.69%
For Capital Adequacy - Amount	$ 38,442	$ 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		$ 93,690	$ 95,078
Actual - Ratio		12.92%	12.77%
For Capital Adequacy - Amount		$ 57,996	$ 59,578
For Capital Adequacy - Ratio		8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount		$ 72,495	$ 74,473
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio		10.00%	10.00%
Tier 1 Capital (to risk-weighted assets)
Actual - Amount		$ 87,392	$ 88,408
Actual - Ratio		12.05%	11.87%
For Capital Adequacy - Amount		$ 43,497	$ 44,684
For Capital Adequacy - Ratio		6.00%	6.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount		$ 57,996	$ 59,578
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		$ 87,392	$ 88,408
Actual - Ratio		12.05%	11.87%
For Capital Adequacy - Amount		$ 32,623	$ 33,513
For Capital Adequacy - Ratio		4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount		$ 47,122	$ 48,407
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio		6.50%	6.50%
Tier 1 Capital (to average assets)
Actual - Amount		$ 87,392	$ 88,408
Actual - Ratio		9.51%	9.20%
For Capital Adequacy - Amount		$ 37,762	$ 38,442
For Capital Adequacy - Ratio		4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount		$ 45,953	$ 48,052
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio		5.00%	5.00%