SALISBURY BANCORP (PARENT ONLY) CONDENSED FINANCIAL INFORMATION - Unconsolidated statements of cash flows of Salisbury Bancorp, Inc. (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income	$ 6,256	$ 6,685	$ 8,457
Adjustments to reconcile net income to net cash provided by operating activities:
Net cash provided by operating activities	10,207	11,273	8,090
Investing Activities
Net cash utilized by investing activities	(9,903)	(74,003)	(10,332)
Financing Activities
Common stock dividends paid	(3,113)	(3,086)	(3,054)
Preferred stock dividends paid			(158)
Proceeds from issuance of subordinated debt, net of issue cost			9,764
Net cash (utilized) provided by financing activities	12,697	36,097	28,255
Net (decrease) increase in cash and cash equivalents	13,001	(26,633)	26,013
Salisbury Bancorp, Inc. (Parent Only)
Net income	6,256	6,685	8,457
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed net income of subsidiary	(3,290)	(3,780)	(6,049)
Other	(410)	(13)	(275)
Net cash provided by operating activities	2,556	2,892	2,133
Investing Activities
Investment in bank
Maturities of interest-bearing time deposits of other banks
Net cash utilized by investing activities
Financing Activities
Common stock dividends paid	(3,113)	(3,086)	(3,054)
Preferred stock dividends paid			(158)
Proceeds from issuance of subordinated debt, net of issue cost			9,764
Redemption of preferred stock			(16,000)
Proceeds from issuance of common stock	395	263	491
Net cash (utilized) provided by financing activities	(2,718)	(2,823)	(8,957)
Net (decrease) increase in cash and cash equivalents	(162)	69	(6,824)
Cash and cash equivalents, beginning of period	2,681	2,612	9,436
Cash and cash equivalents, end of period	$ 2,519	$ 2,681	$ 2,612