SALISBURY BANCORP (PARENT ONLY) CONDENSED FINANCIAL INFORMATION - Unconsolidated balance sheets of Salisbury Bancorp, Inc. (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 9,357	$ 5,434
Other assets	2,771	3,574
Total Assets	986,984	935,366
Liabilities and Shareholders' Equity
Subordinated debt	9,811	9,788
Total Liabilities and Shareholders' Equity	986,984	935,366
Salisbury Bancorp, Inc. (Parent Only)
Assets
Cash and due from banks	2,519	2,681
Investment in bank subsidiary	104,404	101,146
Other assets	430	11
Total Assets	107,353	103,838
Liabilities and Shareholders' Equity
Subordinated debt	9,811	9,788
Other liabilities	28	43
Shareholders' equity	97,514	94,007
Total Liabilities and Shareholders' Equity	$ 107,353	$ 103,838