CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest and dividend income
Interest and fees on loans	$ 41,080	$ 40,796	$ 39,742
Interest on debt securities
Taxable	2,048	1,671	2,223
Tax exempt	697	672	545
Other interest and dividends	247	295	903
Total interest and dividend income	44,072	43,434	43,413
Interest expense
Deposits	2,160	3,890	7,324
Repurchase agreements	16	20	24
Finance lease	136	141	170
Note payable	11	14	16
Subordinated debt	1,000	618	624
Federal Home Loan Bank of Boston advances	125	605	1,143
Total interest expense	3,448	5,288	9,301
Net interest and dividend income	40,624	38,146	34,112
(Release) provision for loan losses	(720)	5,038	955
Net interest and dividend income after (release) provision for loan losses	41,344	33,108	33,157
Non-interest income
Trust and wealth advisory	4,970	4,194	3,995
Service charges and fees	4,822	3,072	4,028
Mortgage banking activities, net	1,000	1,621	423
(Losses) gains on CRA mutual fund	(26)	19	25
(Losses) gains on securities, net	(2)	196	263
Bank-owned life insurance (“BOLI”) income	556	495	392
Gain on bank-owned life insurance		601
Gain on sale of assets	73
Other	107	125	124
Total non-interest income	11,500	10,323	9,250
Non-interest expense
Salaries	13,417	11,828	12,048
Employee benefits	5,023	4,533	4,384
Premises and equipment	4,114	4,019	4,016
Write-down of assets	144
Data processing	2,441	2,211	2,201
Professional fees	2,779	2,741	2,213
Collections, OREO, and loan related	455	323	844
FDIC insurance	541	466	261
Marketing and community support	881	573	619
Amortization of intangibles	256	321	388
Other	2,053	2,023	1,938
Total non-interest expense	32,104	29,038	28,912
Income before income taxes	20,740	14,393	13,495
Income tax provision	4,267	2,453	2,359
Net income	16,473	11,940	11,136
Net income available to common shareholders	$ 16,225	$ 11,775	$ 10,976
Basic earnings per common share	$ 5.77	$ 4.21	$ 3.95
Diluted earnings per common share	5.72	4.20	3.93
Common dividends per share	$ 1.21	$ 1.16	$ 1.12