Unconsolidated balance sheets of Salisbury Bancorp, Inc. (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 6,404	$ 10,599
Other assets	5,527	3,423
Total Assets	1,529,184	1,293,660
Liabilities and Shareholders' Equity
Subordinated debt	24,474	9,883
Shareholders' equity	136,600	124,752	$ 113,655	$ 103,459
Total Liabilities and Shareholders' Equity	1,529,184	1,293,660
Parent Company [Member]
Assets
Cash and due from banks	6,412	1,968
Investment in bank subsidiary	154,292	132,407
Other assets	386	273
Total Assets	161,090	134,648
Liabilities and Shareholders' Equity
Subordinated debt	24,474	9,883
Other liabilities	16	13
Shareholders' equity	136,600	124,752
Total Liabilities and Shareholders' Equity	$ 161,090	$ 134,648