SHAREHOLDERS' EQUITY - Actual regulatory capital position and minimum capital requirements (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Salisbury
Total Capital (to risk-weighted assets)
Actual - Amount	$ 98,021	$ 96,166
Actual - Ratio	13.34%	13.26%
For Capital Adequacy - Amount	$ 58,785	$ 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	$ 81,585	$ 79,868
Actual - Ratio	11.10%	11.02%
For Capital Adequacy - Amount	$ 44,089	$ 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	$ 81,585	$ 79,868
Actual - Ratio	11.10%	11.02%
For Capital Adequacy - Amount	$ 33,067	$ 32,623
For Capital Adequacy - Ratio	4.50%	4.50%
To Be Well Capitalized - Amount
To Be Well Capitalized - Ratio
Tier 1 Capital (to average assets)
Actual - Amount	$ 81,585	$ 79,868
Actual - Ratio	8.83%	8.69%
For Capital Adequacy - Amount	$ 37,498	$ 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	$ 94,859
Actual - Ratio		12.92%	12.91%
For Capital Adequacy - Amount		$ 57,996	$ 58,785
For Capital Adequacy - Ratio		8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount		$ 72,495	$ 73,482
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	$ 88,423
Actual - Ratio		12.05%	12.03%
For Capital Adequacy - Amount		$ 43,497	$ 44,089
For Capital Adequacy - Ratio		6.00%	6.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount		$ 57,996	$ 58,785
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	$ 88,423
Actual - Ratio		12.05%	12.03%
For Capital Adequacy - Amount		$ 32,623	$ 33,067
For Capital Adequacy - Ratio		4.50%	4.50%
To Be Well Capitalized - Amount		$ 47,122	$ 47,763
To Be Well Capitalized - Ratio		6.50%	6.50%
Tier 1 Capital (to average assets)
Actual - Amount		$ 87,392	$ 88,423
Actual - Ratio		9.51%	9.59%
For Capital Adequacy - Amount		$ 37,762	$ 37,423
For Capital Adequacy - Ratio		4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions - Amount		$ 45,953	$ 46,778
To Be Well Capitalized Under Prompt Corrective Action Provisions - Ratio		5.00%	5.00%