CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Activities
Net income	$ 8,824	$ 6,256	$ 6,685
(Accretion), amortization and depreciation:
Securities	31	145	241
Bank premises and equipment	1,668	1,441	1,181
Core deposit intangible	454	533	601
Modification fees on Federal Home Loan Bank of Boston advances	232	234	230
Subordinated debt issuance costs	24	23	24
Mortgage servicing rights	48	169	242
Fair value adjustment on loans	(779)	(1,207)	(1,784)
Fair value adjustment on deposits	(37)	(78)	(121)
(Gains) and losses, including write-downs
Sales and calls of securities available-for-sale, net	(318)	(178)	(584)
Sales of loans, excluding capitalized servicing rights	(71)	(95)	(171)
CRA Mutual Fund	18
Other real estate owned	274	1,717	435
Sales/disposals of premises and equipment	85	1	13
Gain from BOLI	(341)
Provision for loan losses	1,728	1,020	1,835
Proceeds from loans sold	4,555	5,440	10,505
Loans originated for sale	(3,815)	(6,014)	(9,571)
Increase in deferred loan origination fees and costs, net	(132)	(42)	(58)
Mortgage servicing rights originated	(43)	(63)	(95)
(Decrease) increase in mortgage servicing rights impairment reserve		(23)	20
Increase in interest receivable	(478)	(229)	(117)
Deferred tax (benefit) expense	(494)	888	957
(Increase) decrease in prepaid expenses	(50)	123	(296)
Increase in cash surrender value of life insurance policies	(337)	(343)	(353)
Decrease (increase) in income tax receivable	760	(173)	(178)
Decrease (increase) in other assets	48	790	(242)
Increase (decrease) in accrued expenses	769	(643)	660
Increase (decrease) in interest payable	138	10	(60)
Increase in other liabilities	69	240	1,086
Stock based compensation - restricted stock awards	447	265	221
Tax benefit from stock compensation			(33)
Net cash provided by operating activities	13,277	10,207	11,273
Investing Activities
Purchases of Federal Home Loan Bank of Boston stock	(683)	(602)	(35)
Purchases of securities available-for-sale	(41,631)	(36,654)	(56,229)
Proceeds from sales of securities available-for-sale	10,036	199	4,865
Proceeds from calls of securities available-for-sale	695	16,141	14,221
Proceeds from maturities of securities available-for-sale	17,061	20,427	33,574
Reinvestment of CRA mutual fund	(19)
Loan originations and principle collections, net	(102,273)	(32,536)	(69,240)
Recoveries of loans previously charged off	74	600	126
Proceeds from sales of other real estate owned	289	2,080
Capital expenditures	(1,393)	(1,954)	(1,285)
Net cash and cash equivalents (paid) acquired from acquisition	(298)	22,396
Net cash utilized by investing activities	(118,142)	(9,903)	(74,003)
Financing Activities
Increase in deposit transaction accounts, net	58,658	7,578	33,946
Increase (decrease) in time deposits, net	44,300	(5,208)	(6,588)
Increase (decrease) in securities sold under agreements to repurchase, net	2,436	(3,867)	1,621
Short-term Federal Home Loan Bank of Boston advances, net	(17,500)	17,000	10,000
Long-term Federal Home Loan Bank of Boston advances	37,000
Principal payments on Federal Home Loan Bank of Boston advances	(7,000)		(21)
Principal payments on note payable	(33)	(31)	(32)
Decrease in capital lease obligation	(127)	(59)	(4)
Stock options exercised	222	316	87
Tax benefit from stock compensation			33
Issuance of shares for directors' fees	1	81	141
Common stock dividends paid	(3,133)	(3,113)	(3,086)
Net cash provided by financing activities	114,824	12,697	36,097
Net increase (decrease) in cash and cash equivalents	9,959	13,001	(26,633)
Cash and cash equivalents, beginning of year	48,486	35,485	62,118
Cash and cash equivalents, end of year	58,445	48,486	35,485
Cash paid during year
Interest	6,864	4,049	3,777
Income taxes	1,443	2,291	1,238
Non-cash transfers
From loans to other real estate owned	1,654	743	4,955
From other real estate owned to other assets			747
Capital Lease Obligation	1,373
Other:
Adoption of new accounting principle	16
BOLI proceeds included in other assets	621
Branch Acquisitions
Cash and cash equivalents (paid) acquired	(298)	22,387
Net loans acquired	7,849	7,097
Fixed assets acquired (including capital leases)	761	1,605
Accrued interest receivable acquired	5	12
Other assets acquired	6	20
Core deposit intangible		633
Goodwill		1,263
Deposits assumed	8,323	31,433
Capital lease assumed		1,476
Other liabilities assumed		$ 3