SALISBURY BANCORP (PARENT ONLY) CONDENSED FINANCIAL INFORMATION - Unconsolidated balance sheets of Salisbury Bancorp, Inc. (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 7,406	$ 7,238
Other assets	3,390	2,635
Total Assets	1,112,448	1,121,554
Liabilities and Shareholders' Equity
Subordinated debt	9,859	9,835
Shareholders' equity	113,655	103,459	$ 97,514	$ 94,007
Total Liabilities and Shareholders' Equity	1,112,448	1,121,554
Salisbury Bancorp, Inc. (Parent Only)
Assets
Cash and due from banks	2,273	2,105
Investment in bank subsidiary	121,027	110,525
Other assets	252	689
Total Assets	123,552	113,319
Liabilities and Shareholders' Equity
Subordinated debt	9,859	9,835
Other liabilities	38	25
Shareholders' equity	113,655	103,459
Total Liabilities and Shareholders' Equity	$ 123,552	$ 113,319