CONSOLIDATED STATEMENTS OF INCOME - Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Interest and dividend income
Interest and fees on loans	$ 32,050	$ 31,791	$ 19,616
Interest on debt securities
Taxable	1,183	1,179	1,406
Tax exempt	927	1,431	1,704
Other interest and dividends	294	209	129
Total interest and dividend income	34,454	34,610	22,855
Interest expense
Deposits	2,181	1,844	1,465
Repurchase agreements	6	7	8
Federal Home Loan Bank of Boston advances	947	1,064	1,184
Capital lease	70	70	47
Note payable	21	6
Subordinated debt	624	35
Total interest expense	3,849	3,026	2,704
Net interest and dividend income	30,605	31,584	20,151
Provision for loan losses	1,835	917	1,134
Net interest and dividend income after provision for loan losses	28,770	30,667	19,017
Non-interest income
Gains on securities, net	584	192
Trust and wealth advisory	3,338	3,265	3,295
Service charges and fees	3,133	2,986	2,431
Gains on sales of mortgage loans, net	229	274	64
Mortgage servicing, net	156	47	136
Other	451	510	326
Total non-interest income	7,891	7,274	6,252
Non-interest expense
Salaries	10,926	10,301	8,029
Employee benefits	3,891	3,729	3,136
Premises and equipment	3,375	3,541	2,831
Data processing	2,106	1,677	1,502
Professional fees	1,933	2,150	1,331
Collections, OREO, and appraisals	999	567	458
FDIC insurance	606	658	461
Marketing and community support	686	593	396
Amortization of intangibles	601	652	291
Merger and acquisition related expenses			1,974
Other	2,264	2,053	1,729
Total non-interest expense	27,387	25,921	22,138
Income before income taxes	9,274	12,020	3,131
Income tax provision	2,589	3,563	610
Net income	6,685	8,457	2,521
Net income allocated to common stock	$ 6,633	$ 8,227	$ 2,328
Basic earnings per common share	$ 2.43	$ 3.04	$ 1.32
Weighted average common shares outstanding, to calculate basic earnings per share	2,733	2,706	1,764
Diluted earnings per common share	$ 2.41	$ 3.02	$ 1.32
Weighted average common shares outstanding, to calculate diluted earnings per share	2,749	2,723	1,765
Common dividends per share	$ 1.12	$ 1.12	$ 1.12