Bar Harbor Bankshares (BHB) 10-K 10 Mar 20 2019 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Mar. 06, 2020	Jun. 30, 2019
Document and Entity Information
Entity Registrant Name	BAR HARBOR BANKSHARES
Entity Central Index Key	0000743367
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		15,587,359
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Public Float			$ 405,816,048

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 37,261	$ 35,208
Interest-bearing deposit with the Federal Reserve Bank	19,649	63,546
Total cash and cash equivalents	56,910	98,754
Securities available for sale, at fair value	663,230	725,837
Federal Home Loan Bank stock	20,679	35,659
Total securities	683,909	761,496
Loans:
Total loans	2,641,092	2,490,227
Less: Allowance for loan losses	(15,353)	(13,866)
Net loans	2,625,739	2,476,361
Premises and equipment, net	51,205	48,804
Other real estate owned	2,236	2,351
Goodwill	118,649	100,085
Other intangible assets, net	8,641	7,459
Cash surrender value of bank-owned life insurance	75,863	73,810
Deferred tax assets, net	3,865	9,514
Other assets	42,111	29,853
Total assets	3,669,128	3,608,487
Deposits:
Demand	414,534	370,889
NOW	575,809	484,717
Savings	388,683	358,888
Money market	384,090	335,951
Time	932,635	932,793
Total deposits	2,695,751	2,483,238
Borrowings:
Senior	471,396	680,823
Subordinated	59,920	42,973
Total borrowings	531,316	723,796
Other liabilities	45,654	30,874
Total liabilities	3,272,721	3,237,908
Shareholders’ equity
Capital stock, par value $2.00; authorized 20,000,000 shares; issued 16,428,388 and 16,428,388 shares at December 31, 2019 and December 31, 2018, respectively	32,857	32,857
Additional paid-in capital	188,536	187,653
Retained earnings	175,780	166,526
Accumulated other comprehensive loss	3,911	(11,802)
Less: 870,257 and 905,201 shares of treasury stock at December 31, 2019 and December 31, 2018, respectively, at cost	(4,677)	(4,655)
Total shareholders’ equity	396,407	370,579
Total liabilities and shareholders’ equity	3,669,128	3,608,487
Commercial real estate
Loans:
Loans	930,661	826,699
Commercial and industrial
Loans:
Loans	423,291	404,870
Residential real estate
Loans:
Loans	1,151,857	1,144,698
Consumer
Loans:
Loans	$ 135,283	$ 113,960

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 2	$ 2
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares issued (in shares)	16,428,388	16,428,388
Treasury stock (in shares)	870,257	905,201

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest and dividend income
Loans	$ 111,042	$ 104,015	$ 94,976
Securities and other	24,349	23,436	21,093
Total interest and dividend income	135,391	127,451	116,069
Interest expense
Deposits	27,034	19,521	11,307
Borrowings	18,547	17,047	12,607
Total interest expense	45,581	36,568	23,914
Net interest income	89,810	90,883	92,155
Provision for loan losses	2,317	2,780	2,788
Net interest income after provision for loan losses	87,493	88,103	89,367
Non-interest income
Trust and investment management fee income	12,063	11,985	12,270
Insurance brokerage service income	0	0	1,097
Customer service fees	10,127	9,538	8,484
(Loss) gain on sales of securities, net	237	(924)	19
Bank-owned life insurance income	2,053	1,821	1,539
Customer derivative income	2,028	860	0
Other income	2,561	4,655	2,573
Total non-interest income	29,069	27,935	25,982
Non-interest expense
Salaries and employee benefits	45,000	40,964	39,589
Occupancy and equipment	14,214	12,386	11,061
Loss on premises and equipment, net	18	0	94
Outside services	1,818	2,408	3,000
Professional services	2,191	1,474	1,655
Communication	821	804	1,289
Marketing	1,872	1,743	945
Amortization of intangible assets	861	828	812
Loss on debt extinguishment	1,096	0	0
Acquisition, restructuring and other expenses	8,317	1,728	3,302
Other expenses	13,525	13,204	10,979
Total non-interest expense	89,733	75,539	72,726
Income before income taxes	26,829	40,499	42,623
Income tax expense	4,209	7,562	16,630
Net income	$ 22,620	$ 32,937	$ 25,993
Earnings per share:
Basic (in dollars per share)	$ 1.46	$ 2.13	$ 1.71
Diluted (in dollars per share)	$ 1.45	$ 2.12	$ 1.70
Weighted average common shares outstanding:
Basic (in shares)	15,540,884	15,487,686	15,183,615
Diluted (in shares)	15,586,993	15,564,464	15,290,410

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 22,620	$ 32,937	$ 25,993
Other comprehensive income (loss), before tax:
Changes in unrealized loss on securities available for sale	18,646	(8,563)	526
Changes in unrealized loss on derivative hedges	2,216	654
Changes in unrealized loss on derivative hedges	1,768	486	(838)
Changes in unrealized loss on post-retirement plans	(350)	(216)	(326)
Income taxes related to other comprehensive income (loss):
Changes in unrealized loss on securities available for sale	(4,434)	1,978	(114)
Changes in unrealized loss on derivative hedges	(448)	(168)
Changes in unrealized loss on derivative hedges			386
Changes in unrealized loss on post-retirement plans	83	47	138
Total other comprehensive income (loss)	15,713	(6,268)	(228)
Total comprehensive income	$ 38,333	$ 26,669	$ 25,765

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common stock amount	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Treasury stock
Balance at beginning of period at Dec. 31, 2016	$ 156,740	$ 13,577	$ 23,027	$ 130,489	$ (4,326)	$ (6,027)
Comprehensive income:
Net income	25,993			25,993
Other comprehensive income loss	(228)				(228)
Total comprehensive income	25,765			25,993	(228)
Cash dividends declared	(11,505)			(11,505)
Acquisition of Lake Sunapee Bank Group	181,919	8,328	173,591
Treasury stock purchased	(282)					(282)
Net issuance to employee stock plans, including related tax effects	746		(222)			968
Three-for-two stock split	(16)	10,952	(10,968)
Recognition of stock based compensation	1,274		1,274
Balance at end of period at Dec. 31, 2017	354,641	32,857	186,702	144,977	(4,554)	(5,341)
Comprehensive income:
Net income	32,937			32,937
Other comprehensive income loss	(6,268)				(6,268)
Total comprehensive income	26,669			32,937	(6,268)
Cash dividends declared	(12,184)			(12,184)
Treasury stock purchased	(324)					(324)
Net issuance to employee stock plans, including related tax effects	615		(395)			1,010
Modified retrospective basis adoption of Revenue Recognition Accounting Codification Standard 606	(184)			(184)
Reclassification of the income tax effects of the Tax Cuts and Jobs Act from accumulated other comprehensive income for adoption of ASU 2018-02				980	(980)
Recognition of stock based compensation	1,346		1,346
Balance at end of period at Dec. 31, 2018	370,579	32,857	187,653	166,526	(11,802)	(4,655)
Comprehensive income:
Net income	22,620			22,620
Other comprehensive income loss	15,713				15,713
Total comprehensive income	38,333			22,620	15,713
Cash dividends declared	(13,366)			(13,366)
Treasury stock purchased	(239)					(239)
Net issuance to employee stock plans, including related tax effects	(273)		(490)			217
Recognition of stock based compensation	1,373		1,373
Balance at end of period at Dec. 31, 2019	$ 396,407	$ 32,857	$ 188,536	$ 175,780	$ 3,911	$ (4,677)

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]
Cash dividends declared (in dollars per share)	$ 0.86	$ 0.79	$ 0.75
Treasury stock purchased (in shares)	9,195	10,899	9,603
Net shares issued to employee stock plans (in shares)	34,944	101,460	91,517
Acquisition of Lake Sunapee Bank Group (in shares)			6,245,780

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 22,620	$ 32,937	$ 25,993
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	2,317	2,780	2,788
Net amortization of securities	3,341	3,945	5,214
Deferred tax benefit	1,101	(443)	6,886
Change in unamortized net loan costs and premiums	(555)	(600)	(933)
Premises and equipment depreciation	4,136	3,704	3,553
Stock-based compensation expense	1,373	1,346	1,274
Accretion of purchase accounting entries, net	(3,806)	(3,512)	(3,337)
Amortization of other intangibles	861	828	812
Income from cash surrender value of bank-owned life insurance policies	(2,053)	(1,821)	(1,539)
(Gain) loss on sales of securities, net	(237)	924	(19)
Loss on other real estate owned	166	0	0
Loss on premises and equipment, net	18	0	94
Net change in other assets and liabilities	7,121	(2,366)	(432)
Net cash provided by operating activities	36,403	37,722	40,354
Cash flows from investing activities:
Proceeds from sales of securities available for sale	92,315	29,107	1,599
Proceeds from maturities, calls and prepayments of securities available for sale	115,334	95,629	121,583
Purchases of securities available for sale	(129,189)	(146,763)	(172,116)
Net change in loans	(150,831)	(5,158)	(145,449)
Purchase of Federal Home Loan Bank stock	(11,687)	(2,676)	(11,986)
Proceeds from sale of Federal Home Loan Bank stock	26,667	5,122	10,661
Purchase of premises and equipment, net	(9,185)	(4,793)	(3,157)
Purchase of bank-owned life insurance	0	(14,000)	0
Acquisitions, net of cash acquired	(18,383)	0
Acquisitions, net of cash acquired			39,537
Net investment in tax credit limited partnerships	(22)	(585)	0
Proceeds from sale of other real estate owned	0	153	322
Net cash used in investing activities	(84,981)	(43,964)	(159,006)
Cash flows from financing activities:
Net increase in deposits	212,693	131,981	151,900
Net change in short-term FHLB borrowings	(308,380)	37,000	(68,368)
Proceeds from advances from the Federal Home Loan Bank	328,097	42,700	221,168
Repayments of advances from the Federal Home Loan Bank	(237,719)	(180,982)	(92,539)
Net change in short-term other borrowings	8,621	(4,495)	(222)
Proceeds from subordinated debt issuance	40,000	0	0
Repayments of subordinated debt	(22,000)	0	0
Payment of subordinated debt issuance costs	(700)	0	0
Exercise of stock options	(273)
Exercise of stock options		615	746
Purchase of treasury stock	(239)	(324)	(282)
Cash dividends paid on common stock	(13,366)	(12,184)	(11,505)
Net cash provided by financing activities	6,734	14,311	200,898
Net change in cash and cash equivalents	(41,844)	8,069	82,246
Cash and cash equivalents at beginning of year	98,754	90,685	8,439
Cash and cash equivalents at end of year	56,910	98,754	90,685
Supplemental cash flow information:
Interest paid	45,755	36,511	21,399
Income taxes paid, net	2,371	9,891	9,084
Acquisition of non-cash assets and liabilities:
Assets acquired	243,676	0	1,454,076
Liabilities assumed	261,814	0	1,406,672
Other non-cash changes:
Real estate owned acquired in settlement of loans	250	$ 2,380	$ 32
Initial recognition of operating lease right-of-use assets	8,991
Initial recognition of operating lease liabilities	$ 8,991

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of presentation: The consolidated financial statements (the “financial statements”) of Bar Harbor Bankshares and its subsidiaries (the “Company” or “Bar Harbor”) have been prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”). Bar Harbor Bankshares is a Maine Financial Institution Holding Company for the purposes of the laws of the state of Maine, and as such, is subject to the jurisdiction of the Superintendent of the Maine Bureau of Financial Institutions. These financial statements include the accounts of the Company, its wholly-owned subsidiary Bar Harbor Bank & Trust (the "Bank") and the Bank’s consolidated subsidiaries. The results of operations of companies or assets acquired are included only from the dates of acquisition. All material wholly-owned and majority-owned subsidiaries are consolidated unless U.S. GAAP requires otherwise. Consolidation: The accompanying consolidated financial statements have been prepared in accordance with U.S. GAAP. The consolidated financial statements include the accounts of Bar Harbor Bankshares and its wholly-owned subsidiaries, Bar Harbor Bank & Trust, Bar Harbor Trust Services, Charter Trust Company and Cottage Street Corporation. All significant inter-company balances and transactions have been eliminated in consolidation. Assets held in a fiduciary capacity are not assets of the Company, but assets of customers, and therefore, are not included in the consolidated balance sheets. Reclassifications: Whenever necessary, amounts in the prior years’ financial statements are reclassified to conform to current presentation. The reclassifications had no impact on net income in the Company’s consolidated income statement. Stock Split: On February 21, 2017, the Company's Board of Directors declared a three-for-two stock split payable on March 21, 2017 as a large stock dividend. Use of estimates: In preparing financial statements in conformity with U.S. GAAP, management is required to make estimates and assumptions that affect the reported amount of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to change in the near term relate to the determination of the allowance for loan losses, other-than-temporary impairment on securities, income tax estimates, reviews of goodwill for impairment, and accounting for post-retirement plans. Cash and Cash Equivalents: For purposes of reporting cash flows, cash and cash equivalents include cash on hand and amounts due from banks, Federal Funds sold, and other short-term investments with maturities less than 90 days. The Federal Reserve Bank requires the Bank to maintain certain reserve requirements of vault cash and/or deposits. The reserve requirement, included in cash and equivalents, was $23.1 million and $15.8 million at year-end 2019 and 2018 , respectively. Securities: All securities held at December 31, 2019 and 2018 were classified as available-for-sale (“AFS”). Available for sale securities primarily consist of mortgage-backed securities and obligations of state and political subdivisions there of, and are carried at estimated fair value. Changes in estimated fair value of AFS securities, net of applicable income taxes, are reported in accumulated other comprehensive income (loss) as a separate component of shareholders’ equity unless deemed to be other-than-temporarily impaired (“OTTI”) as discussed below. The Company does not have any securities classified as trading or held-to-maturity. Premiums and discounts on securities are amortized and accreted over the term of the securities using the interest method. Gains and losses on the sale of securities are recognized at the trade date using the specific-identification method and are shown separately in the Consolidated Statements of Income. Other-Than-Temporary Impairments on Securities: The Company conducts an OTTI analysis of investment securities on a quarterly basis or more often if a potential loss-triggering event occurs. A write-down of a debt security is recorded when fair value is below amortized cost in circumstances where: (1) the Company has the intent to sell a security; (2) it is more likely than not that the Company will be required to sell the security before recovery of its amortized cost basis; or (3) the Company does not expect to recover the entire amortized cost basis of the security. If the Company intends to sell a security or if it is more likely than not that the Company will be required to sell the security before recovery, an OTTI write-down is recognized in earnings equal to the entire difference between the security’s amortized cost basis and its fair value. If the Company does not intend to sell the security or it is not more likely than not that it will be required to sell the security before recovery, the OTTI write-down is separated into an amount representing credit loss, which is recognized in earnings, and an amount related to all other factors, which is recognized in other comprehensive income. To determine the amount related to credit loss on a debt security, the Company applies a methodology similar to that used for evaluating the impairment of loans. Federal Home Loan Bank Stock: The Bank is a member of the Federal Home Loan Bank of Boston (“FHLB”). The Bank uses the FHLB for most of its wholesale funding needs. As a requirement of membership in the FHLB, the Bank must own a minimum required amount of FHLB stock, calculated periodically based primarily on its level of borrowings from the FHLB. FHLB stock is a non-marketable equity security and therefore is reported at cost, which generally equals par value. Shares held in excess of the minimum required amount are generally redeemable at par value. The Company periodically evaluates its investment in FHLB stock for impairment based on, among other things, the capital adequacy of the FHLB and its overall financial condition. Based on the capital adequacy, liquidity position and sustained profitability of the FHLB, management believes there is no impairment related to the carrying amount of the Bank’s FHLB stock as of December 31, 2019 . Loans Held for Sale: Loans originated with the intent to be sold in the secondary market are accounted for at the lower of cost or market (fair value). Fair value is primarily determined based on quoted prices for similar loans in active markets. Gains and losses on sales of residential mortgage loans (sales proceeds minus carrying value) are recorded in non-interest income. Non-refundable fees and direct loan origination costs related to residential mortgage loans held for sale are recognized in non-interest income or non-interest expense as earned or incurred. Loans: Loans are reported at their outstanding unpaid principal balances adjusted for charge-offs, the allowance for loan losses, the unamortized balance of any deferred fees or costs on originated loans and the unamortized balance of any premiums or discounts on loans purchased or acquired through mergers. Interest on loans is accrued and credited to income based on the principal amount of loans outstanding. Loan origination and commitment fees and direct loan origination costs are deferred, and the net amount is amortized as an adjustment of the related loans’ yield, using the level-yield method over the estimated lives of the related loans. Acquired Loans: Loans acquired in acquisitions are initially recorded at fair value with no carryover of the related allowance for credit losses. Determining the fair value of the loans involves estimating the amount and timing of principal and interest cash flows initially expected to be collected on the loans and discounting those cash flows at an appropriate market rate of interest. For loans that meet the criteria stipulated in ASC 310-30, “Loans and Debt Securities Acquired with Deteriorated Credit Quality,” the Company recognizes the accretable yield, which is defined as the excess of all cash flows expected at acquisition over the initial fair value of the loan, as interest income on a level-yield basis over the expected remaining life of the loan. The excess of the loan’s contractually required payments over the cash flows expected to be collected is the non-accretable difference. The non-accretable difference is not recognized as an adjustment of yield, a loss accrual, or a valuation allowance. The Company evaluates quarterly whether the timing and cash to be collected are reasonably expected. Subsequent significant increases in cash flows the Company expects to collect will first reduce any previously recognized valuation allowance and then be reflected prospectively as an increase to the level yield. Subsequent decreases in expected cash flows may result in the loan being considered impaired. Interest income is not recognized to the extent that the net investment in the loan would increase to an amount greater than the estimated payoff amount. For loans that do not meet the ASC 310-30 criteria, the Company accretes interest income based on the contractually required cash flows. The Company subjects loans that do not meet the ASC 310-30 criteria to ASC 450, “Contingencies” by collectively evaluating these loans for an allowance for loan loss. Acquired loans that met the criteria for non-accrual of interest prior to the acquisition are considered performing upon acquisition, regardless of whether the customer is contractually delinquent, if the Company can reasonably estimate the timing and amount of the expected cash flows on such loans and if the Company expects to fully collect the new carrying value of the loans. As such, the Company may no longer consider the loan to be non-accrual or nonperforming and may accrue interest on these loans, including the impact of any accretable yield. Non-performing loans: Residential real estate and home equity loans are generally placed on non-accrual status when reaching 90 days past due, or in process of foreclosure, or sooner if considered appropriate by management. Consumer loans are generally placed on non-accrual when reaching 90 days or more past due, or sooner if considered appropriate by management. Secured consumer loans are written down to net realizable value and unsecured consumer loans are charged-off upon reaching 120 days past due. Commercial real estate loans and commercial business loans that are 90 days or more past due are generally placed on non-accrual status, unless secured by sufficient cash or other assets immediately convertible to cash, and the loan is in the process of collection. Commercial real estate and commercial business loans may be placed on non-accrual status prior to the 90 days delinquency date if considered appropriate by management. When a loan has been placed on non-accrual status, previously accrued and uncollected interest is reversed against interest on the loan. The interest on non-accrual loans is accounted for using the cash-basis or cost-recovery method depending on corresponding credit risk, until qualifying for return to accrual status. A loan can be returned to accrual status when collectability of principal is reasonably assured and the loan has performed for a period of time, generally six months. Impaired loans: A loan is considered impaired when, based on current information and events, it is probable that the Company will not be able to collect all amounts due from the borrower in accordance with the contractual terms of the loan, including scheduled interest payments. Factors considered by management in determining impairment include payment status and collateral value. In considering loans for evaluation of impairment, management generally excludes smaller balance, homogeneous loans; residential mortgage loans, home equity loans, and all consumer loans, unless such loans were restructured in a troubled debt restructuring. These loans are collectively evaluated for risk of loss. When a loan has been identified as being impaired, the amount of impairment is measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s observable market price, or the estimated fair value of the collateral, less any selling costs, if the loan is collateral-dependent. If the measurement of the impaired loan is less than the recorded investment in the loan (including accrued interest, net of deferred loan fees or costs, and unamortized premiums or discounts), impairment is recognized by establishing or adjusting an existing allocation of the allowance for loan losses, or by recording a partial charge-off of the loan to its fair value. Interest payments made on impaired loans are typically applied to principal unless collectability of the principal amount is reasonably assured, in which case, interest income may be accrued or recognized on a cash basis. Loans Modified in a Troubled Debt Restructuring: Loans are considered to have been modified in a troubled debt restructuring when, due to a borrower’s financial difficulties, the Company makes certain concessions to the borrower that it would not otherwise consider. Modifications may include interest rate reductions, principal or interest forgiveness, forbearance, and other actions intended to minimize economic loss and to avoid foreclosure or repossession of collateral. Generally, a non-accrual loan that has been modified in a troubled debt restructuring remains on non-accrual status for a period of at least 6 months to demonstrate that the borrower is able to meet the terms of the modified loan. However, performance prior to the modification, or significant events that coincide with the modification, are included in assessing whether the borrower can meet the new terms and may result in the loan being returned to accrual status at the time of loan modification or after a shorter performance period. If the borrower’s ability to meet the revised payment schedule is uncertain, the loan remains on non-accrual status. Allowance for Loan Losses: The allowance for loan losses (the “allowance”) is a significant accounting estimate used in the preparation of the Company’s consolidated financial statements. The allowance is available to absorb losses inherent in the current loan portfolio and is maintained at a level that, in management’s judgment, is appropriate for the amount of risk inherent in the loan portfolio, given past and present conditions. The allowance is increased by provisions charged to operating expense and by recoveries on loans previously charged off, and is decreased by loans charged off as uncollectible. The allowance is calculated in accordance with ASC 310 - Receivables and ASC 450 - Contingencies. Under the guidance of ASC 310, specific allowances are established in cases where management has identified significant conditions or circumstances related to individual loans where the probability of a loss may be incurred. Credit loss estimates for loans without specific allowances are determined under the guidance of ASC 450, which includes portfolio segmentation based on similar risk characteristics, determination of estimated historical loss rates, calculation of a time-based loss emergence and confirmation periods, and adjustments for certain qualitative risk factors. Arriving at an appropriate level of allowance for loan losses involves a high degree of judgment. The determination of the adequacy of the allowance and provisioning for estimated losses is evaluated regularly based on review of loans, with particular emphasis on non-performing and other loans that management believes warrant special consideration. While management uses available information to recognize losses on loans, changing economic conditions and the economic prospects of the borrowers may necessitate future additions or reductions to the allowance. In addition, various regulatory agencies, as an integral part of their examination process, periodically review the Bank’s allowance, which also may necessitate future additions or reductions to the allowance, based on information available to them at the time of their examination. Refer to Note 4 - Allowance for Loan Losses , for further information, including the Company’s loan loss estimation methodology. Reserve for Unfunded Commitments: The unfunded reserve is a component of other liabilities and represents the estimate for probable credit losses inherent in unfunded commitments to extend credit. Unfunded commitments to extend credit include banker’s acceptances, and standby and commercial letters of credit. The process used to determine the unfunded reserve is consistent with the process for determining the allowance, as adjusted for estimated funding probabilities or loan and lease equivalency factors. The level of the unfunded reserve is adjusted by recording on an expense or recovery in other noninterest expense. Reserve for unfunded commitments are classified in other liabilities on the Company’s Consolidated Balance Sheet. Premises and Equipment: Premises and equipment and related improvements are stated at cost less accumulated depreciation. Depreciation is computed on the straight-line method over the lesser of the lease term or estimated useful lives of related assets; generally 25 to 39 years for premises and three to seven years for furniture and equipment. Software costs are stated at cost less accumulated depreciation within other assets on the Consolidated Statements of Condition. Amortization expense is calculated using the straight-line method over the estimated useful lives of the related assets. Other Real Estate Owned: Other real estate owned consists of properties acquired through foreclosure proceedings or acceptance of a deed-in-lieu of foreclosure. These properties are recorded at fair value less estimated costs to sell the property. Initially at transfer if the recorded investment in the loan exceeds the property’s fair value at the time of acquisition, a charge-off is recorded against the allowance. If the fair value of the property initially at transfer exceeds the carrying amount of the loan, the excess is recorded either as a recovery to the allowance if a charge-off had previously been recorded, or as a gain on initial transfer in other non-interest income. Subsequent decreases in the property’s fair value and operating expenses of the property are recognized through charges to other non-interest expense. The fair value of the property acquired and ongoing valuation is based on third-party appraisals, broker price opinions, recent sales activity, or a combination thereof, subject to management judgment. Due to changing market conditions the amount ultimately realized on the other real estate owned may differ from the amounts reflected in the financial statements. Goodwill: In connection with acquisitions, the Company generally records as assets on its consolidated financial statements both goodwill and other intangible assets, such as core deposit intangibles. Goodwill represents the excess of the purchase price over the fair value of net assets acquired in accordance with the purchase method of accounting for business combinations. Goodwill is not amortized but, instead, is subject to impairment tests on at least an annual basis, or more frequently, if an event occurs or circumstances change that reduce the fair value of a reporting unit below its carrying amount. The impairment testing process is conducted by assigning assets and goodwill to each reporting unit. Currently, the Company’s goodwill is evaluated at the entity level as there is only one reporting unit. The Company, at our discretion, assesses certain qualitative factors to determine if it is more likely than not that the fair value of the reporting unit is less than its carrying value. If it is more likely than not that the fair value of the reporting unit is less than the carrying value, then the fair value of each reporting unit is compared to the recorded book value “step one.” If the fair value of the reporting unit exceeds its carrying value, goodwill is not considered impaired and “step two” is not considered necessary. If the carrying value of a reporting unit exceeds its fair value, the impairment test continues (“step two”) by comparing the carrying value of the reporting unit’s goodwill to the implied fair value of goodwill. The implied fair value is computed by adjusting all assets and liabilities of the reporting unit to current fair value with the offset adjustment to goodwill. The adjusted goodwill balance is the implied fair value of the goodwill. An impairment charge is recognized if the carrying fair value of goodwill exceeds the implied fair value of goodwill. Other Intangible Assets: Intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset or liability. The fair value of these assets are generally determined based on appraisals and are subsequently amortized on a straight-line basis or an accelerated basis over their estimated lives. Management assesses the recoverability of these intangible assets whenever events or changes in circumstances indicate that their carrying value may not be recoverable. If the carrying amount exceeds fair value, an impairment charge is recorded to income. Bank-Owned Life Insurance: Bank-owned life insurance (“BOLI”) represents life insurance on the lives of certain current and retired employees who had provided positive consent allowing the Bank to be the beneficiary of such policies. Increases in the cash value of the policies, as well as insurance proceeds received in excess of the cash value, are recorded in other non-interest income, and are not subject to income taxes. The cash surrender value is included in other assets on the Company’s consolidated balance sheet. Capitalized Servicing Right s : Capitalized servicing rights are recognized as assets when mortgage loans are sold and the rights to service those loans are retained. The Company’s capitalized servicing rights are accounted for under the amortization method and are initially recorded at fair value. Fair values are established by using a discounted cash flow model to calculate the present value of estimated future net servicing income. Changes in the fair value of capitalized servicing rights are primarily due to changes in valuation inputs, assumptions, and the collection and realization of expected cash flows. However, these capitalized servicing rights are amortized in proportion to and over the period of estimated net servicing income, which includes prepayment assumptions. An impairment analysis is prepared on a quarterly basis by estimating the fair value of the capitalized servicing rights and comparing that value to the carrying amount. A valuation allowance is established when the carrying amount of these capitalized servicing rights exceeds fair value. Senior and Subordinated Borrowings: The Company's borrowings include retail and wholesale repurchase agreements, FHLB overnight and short-term borrowings, Federal Funds purchased, line of credit advances and subordinated notes. The Company is required to post collateral for certain borrowings, for which it, generally, posts loans and/or investment securities as collateral. Derivative Financial Instruments: The Company recognizes all derivative instruments on the consolidated balance sheet at fair value. On the date the derivative instrument is entered into, the Company designates whether the derivative is part of a hedging relationship (i.e., cash flow or fair value hedge). The Company formally documents relationships between hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking hedge transactions. The Company also assesses, both at the hedge’s inception and on an ongoing basis, whether the derivatives used in hedging transactions are highly effective in offsetting the changes in cash flows or fair values of hedged items. Changes in the fair value of derivative instruments that are highly effective and qualify as cash flow hedge are recorded in other comprehensive income/(loss). Any ineffective portion is recorded in earnings. For fair value hedges that are highly effective, the gain or loss on the derivative and the loss or gain on the hedged item attributable to the hedged risk are both recognized in earnings, with the differences (if any) representing hedge ineffectiveness. The Company discontinues hedge accounting when it is determined that the derivative is no longer highly effective in offsetting changes of the hedged risk on the hedged item, or management determines that the designation of the derivative as a hedging instrument is no longer appropriate. The Company enters into commitments to lend with borrowers, and forward commitments to sell loans or to-be-announced mortgage-backed bonds to investors to hedge against inherent interest rate and pricing risk associated with selling loans. The commitments to lend generally terminate once the loan is funded, the lock period expires or the borrower decides not to contract for the loan. The forward commitments generally terminate once the loan is sold, the commitment period expires or the borrower decides not to contract for the loan. These commitments are considered derivatives which are accounted for by recognizing their estimated fair value on the Consolidated Balance Sheets as either a freestanding asset or liability. Off-Balance Sheet Financial Instruments: In the ordinary course of business, the Company has entered into off-balance sheet financial instruments consisting of commitments to extend credit, unused or unadvanced loan funds and letters of credit. Such financial instruments are recorded in the consolidated financial statements when they are funded or related fees are incurred or received. Stock Based Compensation: The Company has equity award plans that include stock option, restricted stock and performance stock, which are described more fully in Note 14 - Stock Based Compensation Plans o f the Consolidated Financial Statements. The Company expenses the grant date fair value of equity awards granted. The expense is recognized over the vesting periods of the grants. The Company uses its treasury shares for issuing shares upon option exercises, restricted stock and performance stock vesting. Employee Benefit Plans: The Company has non-qualified supplemental executive retirement agreements with certain retired officers. The agreements provide supplemental retirement benefits payable in installments over a period of years upon retirement or death. The Company recognized the net present value of payments associated with the agreements over the service periods of the participating officers. Interest costs continue to be recognized on the benefit obligations. The Company also has a supplemental executive retirement agreement with a certain current executive officer. This agreement provides a stream of future payments in accordance with individually defined vesting schedules upon retirement, termination, or in the event that the participating executive leaves the Company following a change of control event. The Company recognizes the net present value of payments associated with these agreements over the service periods of the participating executive officers. Upon retirement, interest costs will continue to be recognized on the benefit obligation. The Company recognizes the over-funded or under-funded status of post-retirement benefit plans as a liability or asset on the balance sheet in other liabilities or other assets and recognizes changes in that funded status through other comprehensive income/(loss). Gains and losses, prior service costs and credits, and any remaining transition amounts that have not yet been recognized through net periodic benefit costs are recognized in accumulated other comprehensive income/(loss), net of tax effects, until they are amortized as a component of net periodic cost. The measurement date, which is the date at which the benefit obligation and plan assets are measured, is the Company's fiscal year end. Income Taxes: The Company uses the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. If current available information indicates that it is more likely than not that deferred tax assets will not be realized, a valuation allowance is established. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Treasury Stock: Shares of the Company’s common stock that are repurchased are recorded in treasury stock at cost. On the date of subsequent re-issuance, the treasury stock account is reduced by the cost of such stock on an average cost basis. Earnings Per Share: Basic earnings per share excludes dilution and is computed by dividing income available to common shareholders by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflect the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the Company, such as the Company’s dilutive stock options. Revenue Recognition: The Company recognizes revenue in accordance with ASC 606, "Revenue from Contracts with Customers." ASC 606 requires the Company to follow a five step process: (1) identify the contract(s) with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the Company satisfies a performance obligation. Revenue recognition under ASC 606 depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for the goods or service. See Note 16 - Revenue from Contracts with Customers of the Company's Consolidated Financial Statements for additional information on revenue recognition. Marketing Costs: Marketing costs are expensed as incurred. Segment Reporting: An operating segment is defined as a component of a business for which separate financial information is available that is evaluated regularly by the chief operating decision-maker in deciding how to allocate resources and evaluate performance. The Company has determined that its operations are solely in the community banking industry and include traditional community banking services, including lending activities, acceptance of demand, savings and time deposits, business services, investment management, trust and third-party brokerage services. These products and services have similar distribution methods, types of customers and regulatory responsibilities. Accordingly, segment information is not presented in the Consolidated Financial Statements. Recent Accounting Pronouncements The following table provides a brief description of accounting standards that could have a material impact to the Company’s consolidated financial statements upon adoption: Standard Description Required Date of Adoption Effect on financial statements Standards Adopted in 2019 ASU 2016-02, Leases This ASU creates ASU Topic 842, Leases, and supersedes Topic 840, Leases. The new guidance requires lessees to record a right-of-use asset and a corresponding liability equal to the present value of future rental payments on their balance sheets for all leases with a term greater than one year. There are not significant changes to lessor accounting; however, there are certain improvements made to align lessor accounting with the lessee accounting model and Topic 606, Revenue from Contracts with Customers. This guidance expands b

SECURITIES AVAILABLE FOR SALE

SECURITIES AVAILABLE FOR SALE	12 Months Ended
	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
SECURITIES AVAILABLE FOR SALE	SECURITIES AVAILABLE FOR SALE The following is a summary of securities available for sale: (in thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value December 31, 2019 Debt securities: Mortgage-backed securities: US Government-sponsored enterprises $ 319,064 $ 4,985 $ (2,080 ) $ 321,969 US Government agency 98,568 1,640 (547 ) 99,661 Private label 20,212 68 (747 ) 19,533 Obligations of states and political subdivisions thereof 139,240 3,034 (268 ) 142,006 Corporate bonds 78,804 1,478 (221 ) 80,061 Total securities available for sale $ 655,888 $ 11,205 $ (3,863 ) $ 663,230 December 31, 2018 Debt securities: Mortgage-backed securities: US Government-sponsored enterprises $ 413,492 $ 904 $ (9,444 ) $ 404,952 US Government agency 111,938 509 (1,935 ) 110,512 Private label 20,353 113 (84 ) 20,382 Obligations of states and political subdivisions thereof 133,260 1,081 (2,076 ) 132,265 Corporate bonds 58,098 264 (636 ) 57,726 Total securities available for sale $ 737,141 $ 2,871 $ (14,175 ) $ 725,837 The amortized cost and estimated fair value of available for sale (“AFS”) securities segregated by contractual maturity at December 31, 2019 are presented below. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Mortgage-backed securities are shown in total, as their maturities are highly variable. Available for sale (in thousands) Amortized Cost Fair Value Within 1 year $ — $ — Over 1 year to 5 years 33,179 34,004 Over 5 years to 10 years 57,285 58,138 Over 10 years 127,580 129,925 Total bonds and obligations 218,044 222,067 Mortgage-backed securities 437,844 441,163 Total securities available for sale $ 655,888 $ 663,230 The following table summarizes proceeds from the sale of AFS securities and realized gains and losses: (in thousands) Proceeds from Sale of Securities Available for Sale Realized Gains Realized Losses Net 2019 $ 92,315 $ 993 $ (756 ) $ 237 2018 29,107 — (924 ) (924 ) 2017 1,599 19 — 19 Securities with unrealized losses, segregated by the duration of their continuous unrealized loss positions, are summarized as follows: Less Than Twelve Months Over Twelve Months Total (in thousands) Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Fair December 31, 2019 Debt securities: Mortgage-backed securities: US Government-sponsored enterprises $ 1,074 $ 43,429 $ 1,006 $ 49,712 $ 2,080 $ 93,141 US Government agency 432 19,717 115 9,120 547 28,837 Private label 380 9,843 367 9,411 747 19,254 Obligations of states and political subdivisions thereof 137 29,355 131 1,682 268 31,037 Corporate bonds 142 9,888 79 12,276 221 22,164 Total securities available for sale $ 2,165 $ 112,232 $ 1,698 $ 82,201 $ 3,863 $ 194,433 December 31, 2018 Debt securities: Mortgage-backed securities: US Government-sponsored enterprises $ 155 $ 19,367 $ 9,289 $ 297,569 $ 9,444 $ 316,936 US Government agency 16 2,570 1,919 68,266 1,935 70,836 Private label 79 10,393 5 47 84 10,440 Obligations of states and political subdivisions thereof 43 6,784 2,033 47,930 2,076 54,714 Corporate bonds 224 11,759 412 14,460 636 26,219 Total securities available for sale $ 517 $ 50,873 $ 13,658 $ 428,272 $ 14,175 $ 479,145 A summary of securities pledged as collateral for certain deposits and borrowing arrangements as of the years ended December 31, 2019 and December 31, 2018 is as follows: December 31, 2019 December 31, 2018 (in thousands) Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Securities pledged for deposits $ 217,009 $ 220,054 $ 128,949 $ 126,649 Securities pledged for repurchase agreements 96,007 96,477 55,656 54,189 Securities pledged for other borrowings (1) 157,172 157,458 270,252 265,334 Total securities pledged $ 470,188 $ 473,989 $ 454,857 $ 446,172 ______________________________ (1) The Bank pledged securities as collateral for certain borrowing arrangements with the Federal Home Loan Bank of Boston and Federal Reserve Bank of Boston. Securities Impairment As a part of the Company’s ongoing security monitoring process, the Company identifies securities in an unrealized loss position that could potentially be other-than-temporarily impaired. For the twelve months ended December 31, 2019 , 2018 and 2017 the Company did not record any other-than-temporary impairment (“OTTI”) losses. The following table presents the remaining amount of historical credit losses on debt securities and changes reflected in the statement of income: Twelve Months Ended December 31, (in thousands) 2019 2018 2017 Estimated credit losses as of prior year-end, $ 1,697 $ 1,697 $ 1,697 Reductions for securities paid off during the period — — — Estimated credit losses at end of the period $ 1,697 $ 1,697 $ 1,697 The Company expects to recover its amortized cost basis on all debt securities in its AFS portfolio, as unrealized losses are the result of changes in the interest rate environment and other market factors. Furthermore, the Company does not intend to sell nor does it anticipate that it will be required to sell any of its securities in an unrealized loss position as of December 31, 2019 , prior to this recovery. The Company’s ability and intent to hold these securities until recovery is supported by the Company’s strong capital and liquidity positions as well as its historically low portfolio turnover. The following summarizes, by investment security type, the basis for the conclusion that the debt securities in an unrealized loss position within the Company’s AFS were not other-than-temporarily impaired at December 31, 2019 : US Government-sponsored enterprises 163 out of the total 684 securities in the Company’s portfolios of AFS US Government-sponsored enterprises were in unrealized loss positions. Aggregate unrealized losses represented 2.3% of the amortized cost of securities in unrealized loss positions.The FNMA and FHLMC guarantee the contractual cash flows of all of the Company’s US Government-sponsored enterprises. The securities are investment grade rated and there were no material underlying credit downgrades during the year. All securities are performing. US Government agencies 49 out of the total 182 securities in the Company’s portfolios of AFS US Government agency securities were in unrealized loss positions. Aggregate unrealized losses represented 1.9% of the amortized cost of securities in unrealized loss positions. The Government National Mortgage Association (“GNMA”) guarantees the contractual cash flows of all of the Company’s US government agency securities. The securities are rated investment grade and there were no material underlying credit downgrades during the year. All securities are performing. Private-label 9 of the total 19 securities in the Company’s portfolio of AFS private-label mortgage-backed securities were in unrealized loss positions. Aggregate unrealized losses represented 3.7% of the amortized cost of securities in unrealized loss positions. Based upon the foregoing considerations, and the expectation that the Company will receive all of the future contractual cash flows related to the amortized cost on these securities, the Company does not consider there to be any additional other-than-temporary impairment with respect to these securities. Obligations of states and political subdivisions thereof 15 of the total 217 securities in the Company’s portfolio of AFS municipal bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represented 0.9% of the amortized cost of securities in unrealized loss positions. The Company continually monitors the municipal bond sector of the market carefully and periodically evaluates the appropriate level of exposure to the market. At this time, the Company believes the bonds in this portfolio carry minimal risk of default and the Company is appropriately compensated for that risk. There were no material underlying credit downgrades during the year. All securities are performing. Corporate bonds 7 of the total 27 securities in the Company’s portfolio of AFS corporate bonds were in an unrealized loss position. The aggregate unrealized loss represents 1.1% of the amortized cost of bonds in unrealized loss positions. The Company reviews the financial strength of all of these bonds and has concluded that the amortized cost remains supported by the expected future cash flows of these securities.

LOANS

LOANS	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
LOANS	LOANS The Company’s loan portfolio is comprised of the following segments: commercial real estate, commercial and industrial, residential real estate, and consumer loans. Commercial real estate loans include multi-family, commercial construction and land development, and other commercial real estate classes. Commercial and industrial loans include loans to commercial and agricultural businesses, and tax exempt entities. Residential real estate loans consist of mortgages for 1-to-4 family housing. Consumer loans include home equity loans, auto and other installment loans. The Company’s lending activities are principally conducted in Maine, New Hampshire, and Vermont. Total loans include business activity loans and acquired loans. Acquired loans are those loans previously acquired from a business combination. The following is a summary of total loans: December 31, 2019 December 31, 2018 (in thousands) Business Activities Loans Acquired Loans Total Business Activities Loans Acquired Loans Total Commercial real estate: Construction and land development $ 31,387 $ 2,903 $ 34,290 $ 23,754 $ 2,890 $ 26,644 Other commercial real estate 666,051 230,320 896,371 555,980 244,075 800,055 Total commercial real estate 697,438 233,223 930,661 579,734 246,965 826,699 Commercial and industrial: Commercial 239,692 59,072 298,764 234,757 52,470 287,227 Agricultural 20,018 206 20,224 22,317 — 22,317 Tax exempt 66,860 37,443 104,303 56,588 38,738 95,326 Total commercial and industrial 326,570 96,721 423,291 313,662 91,208 404,870 Total commercial loans 1,024,008 329,944 1,353,952 893,396 338,173 1,231,569 Residential real estate: Residential mortgages 740,687 411,170 1,151,857 670,189 474,509 1,144,698 Total residential real estate 740,687 411,170 1,151,857 670,189 474,509 1,144,698 Consumer: Home equity 59,368 63,033 122,401 57,898 45,291 103,189 Other consumer 11,167 1,715 12,882 9,414 1,357 10,771 Total consumer 70,535 64,748 135,283 67,312 46,648 113,960 Total loans $ 1,835,230 $ 805,862 $ 2,641,092 $ 1,630,897 $ 859,330 $ 2,490,227 Total unamortized net costs and premiums included in the year-end total for business activity loans were as follows: (in thousands) December 31, 2019 December 31, 2018 Unamortized net loan origination costs $ 3,603 $ 3,064 Unamortized net premium on purchased loans (134 ) (127 ) Total unamortized net costs and premiums $ 3,469 $ 2,937 For the year ended December 31, 2019 , the Company had pledged loans with a collateral value totaling $144.2 million to the Federal Reserve Bank of Boston for certain borrowing arrangements. The Company also pledged residential first mortgage loans, home equity loans and certain commercial loans with collateral value totaling $955.7 million for FHLB borrowings for the year ended December 31, 2019 . (See Note 8 - Borrowed Funds of the Company's Consolidated Financial Statements.) The carrying amount of the acquired loans at December 31, 2019 totaled $805.9 million . A subset of these loans was determined to have evidence of credit deterioration at the acquisition date, which is accounted for in accordance with ASC 310-30. These purchased credit-impaired loans presently maintain a carrying value of $16.6 million (and a note balance of $21.8 million ). These loans are evaluated for impairment through the periodic reforecasting of expected cash flows. Loans considered not impaired at acquisition date had a carrying amount of $789.2 million . The following table summarizes activity in the accretable yield for the acquired loan portfolio that falls under the purview of ASC 310-30, Accounting for Certain Loans or Debt Securities Acquired in a Transfer: Twelve Months Ended December 31, (in thousands) 2019 2018 Balance at beginning of period $ 4,377 $ 3,509 Acquisitions 4,391 — Reclassification from nonaccretable difference for loans with improved cash flows 541 2,240 Changes in expected cash flows that do not affect the nonaccretable difference — — Reclassification to TDR — (30 ) Accretion (1,942 ) (1,342 ) Balance at end of period $ 7,367 $ 4,377 The following is a summary of past due loans at December 31, 2019 and December 31, 2018 : Business Activities Loans (in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loans Past Due > 90 days and Accruing December 31, 2019 Commercial real estate: Construction and land development $ 205 $ 53 $ — $ 258 $ 31,129 $ 31,387 $ — Other commercial real estate 40 1,534 1,810 3,384 662,667 666,051 — Total commercial real estate 245 1,587 1,810 3,642 693,796 697,438 — Commercial and industrial: Commercial 452 50 894 1,396 238,296 239,692 — Agricultural 62 34 96 192 19,826 20,018 — Tax exempt — — — — 66,860 66,860 — Total commercial and industrial 514 84 990 1,588 324,982 326,570 — Total commercial loans 759 1,671 2,800 5,230 1,018,778 1,024,008 — Residential real estate: Residential mortgages 7,293 1,243 668 9,204 731,483 740,687 — Total residential real estate 7,293 1,243 668 9,204 731,483 740,687 — Consumer: Home equity 597 43 429 1,069 58,299 59,368 50 Other consumer 36 12 — 48 11,119 11,167 — Total consumer 633 55 429 1,117 69,418 70,535 50 Total loans $ 8,685 $ 2,969 $ 3,897 $ 15,551 $ 1,819,679 $ 1,835,230 $ 50 Acquired Loans (in thousands) 30-59 Days 60-89 Days 90 Days or Greater Past Due Total Past Due Acquired Credit Impaired Total Loans Past Due > 90 days and Accruing December 31, 2019 Commercial real estate: Construction and land development $ — $ 12 $ — $ 12 $ 384 $ 2,903 $ — Other commercial real estate 2,029 245 231 2,505 8,289 230,320 — Total commercial real estate 2,029 257 231 2,517 8,673 233,223 — Commercial and industrial: Commercial 440 335 140 915 2,723 59,072 — Agricultural — — — — 173 206 — Tax exempt — — — — 36 37,443 — Total commercial and industrial 440 335 140 915 2,932 96,721 — Total commercial loans 2,469 592 371 3,432 11,605 329,944 — Residential real estate: Residential mortgages 3,185 864 1,015 5,064 5,591 411,170 — Total residential real estate 3,185 864 1,015 5,064 5,591 411,170 — Consumer: Home equity 208 548 217 973 1,291 63,033 217 Other consumer 2 9 — 11 66 1,715 — Total consumer 210 557 217 984 1,357 64,748 217 Total loans $ 5,864 $ 2,013 $ 1,603 $ 9,480 $ 18,553 $ 805,862 $ 217 Business Activities Loans (in thousands) 30-59 Days 60-89 Days 90 Days or Greater Past Due Total Past Due Current Total Loans Past Due > 90 days and Accruing December 31, 2018 Commercial real estate: Construction and land development $ — $ — $ — $ — $ 23,754 $ 23,754 $ — Other commercial real estate 1,146 — 6,725 7,871 548,109 555,980 — Total commercial real estate 1,146 — 6,725 7,871 571,863 579,734 — Commercial and industrial: Commercial 395 60 402 857 233,900 234,757 50 Agricultural 65 6 25 96 22,221 22,317 — Tax exempt — — — — 56,588 56,588 — Total commercial and industrial 460 66 427 953 312,709 313,662 50 Total commercial loans 1,606 66 7,152 8,824 884,572 893,396 50 Residential real estate: Residential mortgages 3,565 641 1,309 5,515 664,674 670,189 — Total residential real estate 3,565 641 1,309 5,515 664,674 670,189 — Consumer: Home equity 72 — — 72 57,826 57,898 — Other consumer 17 — 11 28 9,386 9,414 — Total consumer 89 — 11 100 67,212 67,312 — Total loans $ 5,260 $ 707 $ 8,472 $ 14,439 $ 1,616,458 $ 1,630,897 $ 50 Acquired Loans (in thousands) 30-59 Days 60-89 Days 90 Days or Greater Past Due Total Past Due Acquired Credit Impaired Total Loans Past Due > 90 days and Accruing December 31, 2018 Commercial real estate: Construction and land development $ — $ — $ — $ — $ 164 $ 2,890 $ — Other commercial real estate 631 99 211 941 6,143 244,075 — Total commercial real estate 631 99 211 941 6,307 246,965 — Commercial and industrial: Commercial 149 26 494 669 679 52,470 — Agricultural — — — — — — — Tax exempt — — — — — 38,738 — Total commercial and industrial 149 26 494 669 679 91,208 — Total commercial loans 780 125 705 1,610 6,986 338,173 — Residential real estate: Residential mortgages 3,419 254 1,792 5,465 3,095 474,509 189 Total residential real estate 3,419 254 1,792 5,465 3,095 474,509 189 Consumer: Home equity 198 — 66 264 22 45,291 7 Other consumer 17 — — 17 3 1,357 — Total consumer 215 — 66 281 25 46,648 7 Total loans $ 4,414 $ 379 $ 2,563 $ 7,356 $ 10,106 $ 859,330 $ 196 Non-Accrual Loans The following is summary information pertaining to non-accrual loans at December 31, 2019 and December 31, 2018 : December 31, 2019 December 31, 2018 (in thousands) Business Activities Loans Acquired Loans Total Business Activities Loans Acquired Loans Total Commercial real estate: Construction and land development $ 258 $ — $ 258 $ 1 $ — $ 1 Other commercial real estate 2,888 343 3,231 7,873 282 8,155 Total commercial real estate 3,146 343 3,489 7,874 282 8,156 Commercial and industrial: Commercial 932 626 1,558 1,423 643 2,066 Agricultural 278 — 278 265 — 265 Tax exempt — — — — — — Total commercial and industrial 1,210 626 1,836 1,688 643 2,331 Total commercial loans 4,356 969 5,325 9,562 925 10,487 Residential real estate: Residential mortgages 3,362 1,973 5,335 4,213 2,997 7,210 Total residential real estate 3,362 1,973 5,335 4,213 2,997 7,210 Consumer: Home equity 615 254 869 246 201 447 Other consumer 21 — 21 90 1 91 Total consumer 636 254 890 336 202 538 Total loans $ 8,354 $ 3,196 $ 11,550 $ 14,111 $ 4,124 $ 18,235 Loans evaluated for impairment by portfolio segment as of December 31, 2019 and December 31, 2018 were as follows: Business Activities Loans (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total December 31, 2019 Individually evaluated for impairment $ 3,964 $ 1,353 $ 2,620 $ 13 $ 7,950 Collectively evaluated 693,474 325,217 738,067 70,522 1,827,280 Total $ 697,438 $ 326,570 $ 740,687 $ 70,535 $ 1,835,230 Acquired Loans (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total December 31, 2019 Individually evaluated for impairment $ 258 $ 385 $ 1,032 $ — $ 1,675 Purchased credit impaired 8,673 2,932 5,591 1,357 18,553 Collectively evaluated 224,292 93,404 404,547 63,391 785,634 Total $ 233,223 $ 96,721 $ 411,170 $ 64,748 $ 805,862 Business Activities Loans (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total December 31, 2018 Individually evaluated for impairment $ 9,835 $ 1,445 $ 2,562 $ 13 $ 13,855 Collectively evaluated 569,899 312,217 667,627 67,299 1,617,042 Total $ 579,734 $ 313,662 $ 670,189 $ 67,312 $ 1,630,897 Acquired Loans (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total December 31, 2018 Individually evaluated for impairment $ 188 $ 426 $ 744 $ — $ 1,358 Purchased credit impaired 6,307 679 3,095 25 10,106 Collectively evaluated 240,470 90,103 470,670 46,623 847,866 Total $ 246,965 $ 91,208 $ 474,509 $ 46,648 $ 859,330 The following is a summary of impaired loans at December 31, 2019 and December 31, 2018 : Business Activities Loans December 31, 2019 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance: Construction and land development $ — $ — $ — Other commercial real estate 1,911 1,957 — Commercial 710 773 — Agricultural 361 361 — Tax exempt loans — — — Residential real estate 2,067 2,227 — Home equity — — — Other consumer — — — With an allowance recorded: Construction and land development $ 258 $ 258 $ 205 Other commercial real estate 1,795 1,940 1,026 Commercial 282 289 164 Agricultural — — — Tax exempt loans — — — Residential real estate 553 590 57 Home equity 13 13 — Other consumer — — — Total Commercial real estate $ 3,964 $ 4,155 $ 1,231 Commercial and industrial 1,353 1,423 164 Residential real estate 2,620 2,817 57 Consumer 13 13 — Total impaired loans $ 7,950 $ 8,408 $ 1,452 Acquired Loans December 31, 2019 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance: Construction and land development $ — $ — $ — Other commercial real estate 90 90 — Commercial 385 481 — Agricultural — — — Tax exempt loans — — — Residential real estate 678 938 — Home equity — — — Other consumer — — — With an allowance recorded: Construction and land development $ — $ — $ — Other commercial real estate 168 168 12 Commercial — — — Agricultural — — — Tax exempt loans — — — Residential real estate 354 376 49 Home equity — — — Other consumer — — — Total Commercial real estate $ 258 $ 258 $ 12 Commercial and industrial 385 481 — Residential real estate 1,032 1,314 49 Consumer — — — Total impaired loans $ 1,675 $ 2,053 $ 61 Business Activities Loans December 31, 2018 (in thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Construction and land development $ — $ — $ — Other commercial real estate 8,209 8,301 — Commercial 649 669 — Agricultural — — — Tax exempt loans — — — Residential real estate 1,671 1,709 — Home equity — — — Other consumer — — — With an allowance recorded: Construction and land development $ 1 $ 1 $ 1 Other commercial real estate 1,625 1,660 421 Commercial 796 855 78 Agricultural — — — Tax exempt loans — — — Residential real estate 891 916 111 Home equity 13 13 — Other consumer — — — Total Commercial real estate $ 9,835 $ 9,962 $ 422 Commercial and industrial 1,445 1,524 78 Residential real estate 2,562 2,625 111 Consumer 13 13 — Total impaired loans $ 13,855 $ 14,124 $ 611 Acquired Loans December 31, 2018 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance: Construction and land development $ — $ — $ — Other commercial real estate 188 187 — Commercial 426 510 — Agricultural — — — Tax exempt loans — — — Residential real estate 375 524 — Home equity — — — Other consumer — — — With an allowance recorded: Construction and land development $ — $ — $ — Other commercial real estate — — — Commercial — — Agricultural — — — Tax exempt loans — — — Residential real estate 369 379 41 Home equity — — — Other consumer — — — Total Commercial real estate $ 188 $ 187 $ — Commercial and industrial 426 510 — Residential real estate 744 903 41 Consumer — — — Total impaired loans $ 1,358 $ 1,600 $ 41 The following is a summary of the average recorded investment and interest income recognized on impaired loans as of December 31, 2019 and December 31, 2018 : Business Activities Loan Twelve Months Ended December 31, 2019 Twelve Months Ended December 31, 2018 (in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest With no related allowance: Construction and land development $ — $ — $ — $ — Other commercial real estate 5,434 55 6,878 77 Commercial 871 5 634 9 Agricultural — — — — Tax exempt loans — — — — Residential real estate 2,089 47 1,693 39 Home equity — — — — Other consumer — — — — With an allowance recorded: Construction and land development $ 56 $ 1 $ 1 $ — Other commercial real estate 1,737 — 1,140 — Commercial 153 — 735 — Agricultural — — — — Tax exempt loans — — — — Residential real estate 540 7 826 9 Home equity 13 — 13 1 Other consumer — — — — Total Commercial real estate $ 7,227 $ 56 $ 8,019 $ 77 Commercial and industrial 1,024 5 1,369 9 Residential real estate 2,629 54 2,519 48 Consumer 13 — 13 1 Total impaired loans $ 10,893 $ 115 $ 11,920 $ 135 Acquired Loans Twelve Months Ended December 31, 2019 Twelve Months Ended December 31, 2018 (in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest With no related allowance: Construction and land development $ — $ — $ — $ — Other commercial real estate 89 — 112 1 Commercial 429 — 441 1 Agricultural — — — — Tax exempt loans — — — — Residential real estate 652 — 442 — Home equity — — — — Other consumer — — — — With an allowance recorded: Construction and land development $ — $ — $ — $ — Other commercial real estate 123 — — — Commercial — — — — Agricultural — — — — Tax exempt loans — — — — Residential real estate 361 — 218 3 Home equity — — — — Other consumer — — — — Total Commercial real estate $ 212 $ — $ 112 $ 1 Commercial and industrial 429 — 441 1 Residential real estate 1,013 — 660 3 Consumer — — — — Total impaired loans $ 1,654 $ — $ 1,213 $ 5 Troubled Debt Restructuring Loans The Company’s loan portfolio also includes certain loans that have been modified in a Troubled Debt Restructuring ("TDR"), where economic concessions have been granted to borrowers who have experienced or are expected to experience financial difficulties. These concessions typically result from the Company’s loss mitigation activities and could include reductions in the interest rate, payment extensions, forgiveness of principal, forbearance, or other actions. Certain TDRs are classified as non-performing at the time of restructure and may only be returned to performing status after considering the borrower’s sustained repayment performance for a reasonable period, generally six months . TDRs are evaluated individually for impairment and may result in a specific allowance amount allocated to an individual loan. The following tables include the recorded investment and number of modifications identified during the twelve months ended December 31, 2019 , 2018 and 2017 , respectively. The table includes the recorded investment in the loans prior to a modification and also the recorded investment in the loans after the loans were restructured. Modifications may include adjustments to interest rates, payment amounts, extensions of maturity, court ordered concessions or other actions intended to minimize economic loss and avoid foreclosure or repossession of collateral. Twelve Months Ended December 31, 2019 (in thousands, except modifications) Number of Modifications Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Specific Reserve Troubled Debt Restructurings Construction and land development — $ — $ — $ — Other commercial real estate 10 630 529 69 Other commercial 7 366 271 — Agricultural 2 500 503 — Tax exempt — — — — Residential mortgages 12 1,427 1,327 — Home equity — — — — Other consumer — — — — Total 31 $ 2,923 $ 2,630 $ 69 Twelve Months Ended December 31, 2018 (in thousands, except modifications) Number of Modifications Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Specific Reserve Troubled Debt Restructurings Construction and land development 1 $ 1 $ 1 $ 1 Other commercial real estate 9 1,896 1,564 153 Other commercial 7 556 486 55 Agricultural 1 167 — — Residential mortgages 19 3,348 2,752 145 Home equity 1 100 100 — Other consumer 3 13 11 — Total 41 $ 6,081 $ 4,914 $ 354 Twelve Months Ended December 31, 2017 (in thousands, except modifications) Number of Modifications Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Specific Reserve Troubled Debt Restructurings Other commercial real estate 6 $ 388 $ 222 $ — Other commercial 6 563 545 — Agricultural 1 19 18 — Residential mortgages 3 692 670 — Home equity 1 13 13 — Other consumer 1 38 36 — Total 18 $ 1,713 $ 1,504 $ — The following table summarizes the types of loan concessions made for the periods presented: 2019 2018 2017 (in thousands, except modifications) Number of Modifications Post-Modification Outstanding Recorded Investment Number of Modifications Post-Modification Outstanding Recorded Investment Number of Modifications Post-Modification Outstanding Recorded Investment Interest rate and maturity concession 2 $ 73 1 $ 16 6 $ 725 Amortization and maturity concession 4 273 1 286 6 490 Amortization concession — — — — 1 94 Amortization, interest rate and maturity concession 5 539 — — 1 36 Amortization and interest rate concession — — — — — — Forbearance 5 346 3 271 — — Forbearance and interest only payments 7 692 6 121 — — Forbearance and interest rate concession — — 1 49 — — Forbearance and maturity concession 4 472 20 2,030 — — Maturity concession — — 2 440 — — Restructure without concession — — 5 1,419 — — Court ordered — — — — — — Other 4 235 2 282 4 159 Total 31 $ 2,630 41 $ 4,914 18 $ 1,504 For the twelve months ended December 31, 2019 , 2018 and 2017 , there were no loans that were restructured that had subsequently defaulted during the period. The evaluation of certain loans individually for specific impairment includes loans that were previously classified as TDRs or continue to be classified as TDRs. Foreclosure As of December 31, 2019 and December 31, 2018, the Company maintained bank-owned residential real estate property with a fair value of $2.2 million and $2.4 million , respectively. Additionally, residential mortgage loans collateralized by real estate property that are in the process of foreclosure as of December 31, 2019 and December 31, 2018 totaled $810 thousand and $1.5 million , respectively. Loan Concentrations Loan concentrations in specific industries may occasionally emerge as a result of economic conditions, changes in local demands, natural loan growth and runoff. At December 31, 2019 the largest industry concentration outside of commercial real estate was the hospitality industry which represents 8.6% or $227.0 million of the Company's total loan portfolio, compared with 9.0% or $223.0 million at December 31, 2018 . There were no concentrations of loans related to any single industry in excess of 10% of total loans for 2019 or 2018 . Loans to Related Parties In the ordinary course of business, the Bank has made loans at prevailing rates and terms to directors, officers and other related parties. In management’s opinion, such loans do not present more than the normal risk of collectability or incorporate other unfavorable features, and were made under terms that are consistent with the Bank’s lending policies. Loan to related parties at December 31, 2019 and December 31, 2018 are summarized below. (in thousands) 2019 2018 Beginning balance $ 8,395 $ 10,487 Changes in composition (1) (302 ) — New Loans 242 — Less: repayments (126 ) (2,092 ) Ending balance $ 8,209 $ 8,395 ______________________________________ (1) Adjustments to reflect changes in status of directors and officers for each year presented. Mortgage Banking The Bank sells loans in the secondary market and retains the ability to service many of these loans. The Bank earns fees for the servicing provided. At year end 2019 and 2018 , the Company was servicing loans for participants totaling $497.2 million and $496.5 million , respectively. Loans serviced for others are not included in the accompanying consolidated balance sheets. The risks inherent in servicing assets relate primarily to changes in prepayments that result from shifts in interest rates. Contractually-specified servicing fees were $1.3 million , $1.3 million , and $1.2 million for the years ended 2019 , 2018 , and 2017 , respectively, and is included as a component of other income within non-interest income. Servicing rights activity during 2019 and 2018 , included in other assets, was as follows: At or for the Twelve Months Ended December 31, (in thousands) 2019 2018 Balance at beginning of year $ 3,086 $ 3,232 Acquired — — Additions 160 99 Amortization (245 ) (245 ) Balance at end of year $ 3,001 $ 3,086 Total residential loans included held for sale loans of $6.5 million and $168 thousand at December 31, 2019 and 2018 , respectively. The net gains on sales of loans at December 31, 2019 and 2018 were $493 thousand and $121 thousand , respectively, and included as a component of other income within non-interest income.

ALLOWANCE FOR LOAN LOSSES

ALLOWANCE FOR LOAN LOSSES	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
ALLOWANCE FOR LOAN LOSSES	ALLOWANCE FOR LOAN LOSSES The allowance for loan losses is maintained at a level considered adequate to provide for an estimate of probable credit losses inherent in the loan portfolio. The allowance is increased by the provision charged to operating expense and reduced by net charge-offs. Loans are charged against the allowance for loan losses when the Company believes collectability has declined to a point where there is a distinct possibility of some loss of principal and interest. While the Company uses the best information available to make the evaluation, future adjustments may be necessary if there are significant changes in conditions. The allowance is comprised of four distinct reserve components: (1) specific reserves related to loans individually evaluated; (2) quantitative reserves related to loans collectively evaluated; (3) qualitative reserves related to loans collectively evaluated; and (4) a temporal estimate is made for incurred loss emergence period for each loan category within the collectively evaluated pools. A summary of the methodology employed on a quarterly basis with respect to each of these components in order to evaluate the overall adequacy of the Company's allowance for loan losses is as follows: Specific Reserve for Loans Individually Evaluated First, the Company identifies loan relationships having aggregate balances in excess of $150 thousand with potential credit weaknesses. Such loan relationships are identified primarily through the Company's analysis of internal loan evaluations, past due loan reports, TDRs and loans adversely classified. Each loan so identified is then individually evaluated for impairment. Loans are considered impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the contractual terms of the original loan agreement. Substantially all impaired loans have historically been collateral dependent, meaning repayment of the loan is expected or is considered to be provided solely from the sale of the loan's underlying collateral. For such loans, the Company measures impairment based on the fair value of the loan's collateral, which is generally determined utilizing current appraisals. A specific reserve is established in an amount equal to the excess, if any, of the recorded investment in each impaired loan over the fair value of its underlying collateral, less estimated costs to sell. The Company's policy is to re-evaluate the fair value of collateral dependent loans at least every twelve months unless there is a known deterioration in the collateral's value, in which case a new appraisal is obtained. Purchase credit impaired (“PCI”) loans are collectively evaluated, but are not included in the general reserve as described below. The evaluation of the PCI loans requires continued quarterly assessment of key assumptions and estimates similar to the initial fair value estimate, including changes in the severity of loss, timing and speed of payments, collateral value changes, expected cash flows and other relevant factors. The quarterly assessment is compared to the initial fair value estimate and a determination is made if an adjustment to the allowance for loan loss is deemed necessary. Quantitative Reserve for Loans Collectively Evaluated Second, the Company stratifies the loan portfolio into two general business loan pools: substandard (7 risk rated) and pass-rated (0 to 6 rated) by loan type. Substandard rated loans are subject to higher credit loss rates in the allowance for loan loss calculation. The Company utilizes historical loss rates for commercial real estate and commercial and industrial loans assessed by internal risk rating. Historical loss rates on residential real estate and consumer loans are not risk graded. Residential real estate and consumer loans are considered as part of the pass-rated portfolio unless removed due to specific reserve evaluation based on past due status and/or other indications of credit deterioration. Quantitative reserves relative to each loan pool are established as follows: for all loan segments an allocation equaling 100% of the respective pool's average 3-year historical net loan charge-off rate (determined based upon the most recent 12 quarters) is applied to the aggregate recorded investment in the pool of loans. Purchased performing loans are collectively evaluated as their own separate category within each loan pool. Qualitative Reserve for Loans Collectively Evaluated Third, the Company considers the necessity to adjust the average historical net loan charge-off rates relative to each of the above two loan pools for potential risks factors that could result in actual losses deviating from prior loss experience. Such qualitative risk factors considered are: (1) lending policies and procedures, (2) business conditions, (3) volume and nature of the loan portfolio, (4) experience, ability and depth of lending management, (5) problem loan trends, (6) quality of the Company’s loan review system, (7) concentrations in the loan portfolio, (8) competition, legal, and regulatory environment and (9) collateral coverage and loan-to-value. Loss Emergence Period for Loans Collectively Evaluated Fourth, the general allowance related to loans collectively evaluated includes an estimate of incurred losses over an estimated loss emergence period ("LEP"). The LEP is generated utilizing a charge-off look-back analysis, which evaluates the time from the first indication of elevated risk of repayment (or other early event indicating a problem) to eventual charge-off to support the LEP considered in the allowance calculation. This reserving methodology establishes the approximate number of months of LEP that represents incurred losses for each loan portfolio within each portfolio segment in addition to the qualitative reserves. Activity in the allowance for loan losses for the twelve months ended December 31, 2019 , 2018 and 2017 was as follows: Business Activities Loans At or for the Twelve Months Ended December 31, 2019 (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total Balance at beginning of period $ 6,811 $ 2,380 $ 3,982 $ 408 $ 13,581 Charged-off loans (212 ) (336 ) (109 ) (228 ) (885 ) Recoveries on charged-off loans 194 65 55 6 320 Provision/(releases) for loan losses 875 1,499 (526 ) 193 2,041 Balance at end of period $ 7,668 $ 3,608 $ 3,402 $ 379 $ 15,057 Individually evaluated for impairment 1,231 164 57 — 1,452 Collectively evaluated 6,437 3,444 3,345 379 13,605 Total $ 7,668 $ 3,608 $ 3,402 $ 379 $ 15,057 Acquired Loans At or for the Twelve Months Ended December 31, 2019 (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total Balance at beginning of period $ 173 $ 35 $ 77 $ — $ 285 Charged-off loans — (23 ) (240 ) (5 ) (268 ) Recoveries on charged-off loans — — — 3 3 Provision/(releases) for loan losses (26 ) (6 ) 306 2 276 Balance at end of period $ 147 $ 6 $ 143 $ — $ 296 Individually evaluated for impairment 12 — 49 — 61 Collectively evaluated 135 6 94 — 235 Total $ 147 $ 6 $ 143 $ — $ 296 Business Activities Loans At or for the Twelve Months Ended December 31, 2018 (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total Balance at beginning of period $ 6,037 $ 2,373 $ 3,357 $ 386 $ 12,153 Charged-off loans (417 ) (111 ) (225 ) (629 ) (1,382 ) Recoveries on charged-off loans 275 76 166 18 535 Provision/(releases) for loan losses 916 42 684 633 2,275 Balance at end of period $ 6,811 $ 2,380 $ 3,982 $ 408 $ 13,581 Individually evaluated for impairment 422 78 111 — 611 Collectively evaluated 6,389 2,302 3,871 408 12,970 Total $ 6,811 $ 2,380 $ 3,982 $ 408 $ 13,581 Acquired Loans At or for the Twelve Months Ended December 31, 2018 (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total Balance at beginning of period $ 97 $ 16 $ 59 $ — $ 172 Charged-off loans (136 ) (166 ) (158 ) (65 ) (525 ) Recoveries on charged-off loans 43 7 — 83 133 Provision/(releases) for loan losses 169 178 176 (18 ) 505 Balance at end of period $ 173 $ 35 $ 77 $ — $ 285 Individually evaluated for impairment — — 41 — 41 Collectively evaluated 173 35 36 — 244 Total $ 173 $ 35 $ 77 $ — $ 285 Business Activities Loans At or for the Twelve Months Ended December 31, 2017 (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total Balance at beginning of period $ 5,145 $ 1,952 $ 2,721 $ 601 $ 10,419 Charged-off loans (124 ) (189 ) (226 ) (162 ) (701 ) Recoveries on charged-off loans 49 11 65 18 143 Provision/(releases) for loan losses 967 599 797 (71 ) 2,292 Balance at end of period $ 6,037 $ 2,373 $ 3,357 $ 386 $ 12,153 Individually evaluated for impairment 447 3 9 — 459 Collectively evaluated 5,590 2,370 3,348 386 11,694 Total $ 6,037 $ 2,373 $ 3,357 $ 386 $ 12,153 Acquired Loans At or for the Twelve Months Ended December 31, 2017 (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total Balance at beginning of period $ — $ — $ — $ — $ — Charged-off loans (151 ) (18 ) (29 ) (127 ) (325 ) Recoveries on charged-off loans 1 — — — 1 Provision/(releases) for loan losses 247 34 88 127 496 Balance at end of period $ 97 $ 16 $ 59 $ — $ 172 Individually evaluated for impairment — — — — — Collectively evaluated 97 16 59 — 172 Total $ 97 $ 16 $ 59 $ — $ 172 Credit Quality Information Loan Origination/Risk Management: The Company has certain lending policies and procedures in place designed to maximize loan income within an acceptable level of risk. The Company’s Board of Directors reviews and approves these policies and procedures on a regular basis. A reporting system supplements the review process by providing management and the Company's Board of Directors with frequent reports related to loan production, loan quality, concentrations of credit, loan delinquencies, non-performing loans and potential problem loans. The Company seeks to diversify the loan portfolio as a means of managing risk associated with fluctuations in economic conditions. Credit Quality Indicators/Classified Loans: In monitoring the credit quality of the portfolio, management applies a credit quality indicator and uses an internal risk rating system to categorize commercial loans. These credit quality indicators range from one through nine, with a higher number correlating to increasing risk of loss. These ratings are used as inputs to the calculation of the allowance for loan losses. Consistent with regulatory guidelines, the Company provides for the classification of loans which are considered to be of lesser quality as special mention, substandard, doubtful, or loss (i.e. risk rated 6, 7, 8 and 9, respectively). The following are the definitions of the Company’s credit quality indicators: Pass: Loans the Company considers in the commercial portfolio segments that are not adversely rated, are contractually current as to principal and interest, and are otherwise in compliance with the contractual terms of the loan agreement. Management believes there is a low risk of loss related to these loans considered pass rated. Special Mention: Loans the Company considers having some potential weaknesses, but are deemed to not carry levels of risk inherent in one of the subsequent categories, are designated as special mention. A special mention loan has potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the institution’s credit position at some future date. This might include loans which may require a higher level of supervision or internal reporting because of: (i) declining industry trends; (ii) increasing reliance on secondary sources of repayment; (iii) the poor condition of or lack of control over collateral; or (iv) failure to obtain proper documentation or any other deviations from prudent lending practices. Economic or market conditions which may, in the future, affect the obligor, may warrant special mention of the asset. Loans for which an adverse trend in the borrower's operations or an imbalanced position in the balance sheet which has not reached a point where the liquidation is jeopardized may be included in this classification. Special mention loans are not adversely classified and do not expose the Company to sufficient risks to warrant classification. Substandard: Loans the Company considers as substandard are inadequately protected by the current net worth and paying capacity of the borrower or of the collateral pledged, if any. Substandard loans have a well-defined weakness that jeopardizes liquidation of the debt. Substandard loans include those loans where there is the distinct possibility of some loss of principal, if the deficiencies are not corrected. Doubtful: Loans the Company considers as doubtful have all of the weaknesses inherent in those loans that are classified as substandard. These loans have the added characteristic of a well-defined weakness which is inadequately protected by the current sound worth and paying capacity of borrower or of the collateral pledged, if any, and calls into question the collectability of the full balance of the loan. The possibility of loss is high but because of certain important and reasonably specific pending factors which may work to the advantage and strengthening of the loan, its classification as loss is deferred until its more exact status is determined. Pending factors include proposed merger, acquisition, or liquidation procedures, capital injection, perfecting liens on additional collateral and refinancing plans. The entire amount of the loan might not be classified as doubtful when collection of a specific portion appears highly probable. Loans are generally not classified doubtful for an extended period of time (i.e., over a year). Loss: Loans the Company considers as losses are those considered uncollectible and of such little value that their continuance as an asset is not warranted and the uncollectible amounts are charged-off. This classification does not mean the asset has absolutely no recovery or salvage value, but rather it is not practical or desirable to defer writing off this worthless asset even though partial recovery may be affected in the future. Losses are taken in the period in which they are determined to be uncollectible. The following tables present the Company’s commercial loans by risk rating at December 31, 2019 and December 31, 2018 : Business Activities Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category Commercial construction and land development Commercial real estate other Total commercial real estate (in thousands) December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 Grade: Pass $ 31,057 $ 23,680 $ 646,886 $ 532,386 $ 677,943 $ 556,066 Special mention — 73 5,483 8,319 5,483 8,392 Substandard 330 — 11,974 13,914 12,304 13,914 Doubtful — 1 1,708 1,361 1,708 1,362 Total $ 31,387 $ 23,754 $ 666,051 $ 555,980 $ 697,438 $ 579,734 Commercial and Industrial Credit Risk Profile by Creditworthiness Category Commercial Agricultural Tax exempt loans Total commercial and industrial (in thousands) December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 Grade: Pass $ 221,329 $ 226,353 $ 18,940 $ 21,680 $ 66,860 $ 56,588 $ 307,129 $ 304,621 Special mention 2,744 6,730 298 215 — — 3,042 6,945 Substandard 14,866 924 780 422 — — 15,646 1,346 Doubtful 753 750 — — — — 753 750 Total $ 239,692 $ 234,757 $ 20,018 $ 22,317 $ 66,860 $ 56,588 $ 326,570 $ 313,662 Residential Real Estate and Consumer Loans Credit Risk Profile Based on Payment Activity Residential real estate Home equity Other consumer Total residential real estate and consumer (in thousands) Dec 31, 2019 Dec 31, 2018 Dec 31, 2019 Dec 31, 2018 Dec 31, 2019 Dec 31, 2018 Dec 31, 2019 Dec 31, 2018 Performing $ 737,325 $ 665,976 $ 58,753 $ 57,652 $ 11,146 $ 9,324 $ 807,224 $ 732,952 Non-performing 3,362 4,213 615 246 21 90 3,998 4,549 Total $ 740,687 $ 670,189 $ 59,368 $ 57,898 $ 11,167 $ 9,414 $ 811,222 $ 737,501 Acquired Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category Commercial construction and land development Commercial real estate other Total commercial real estate (in thousands) December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 Grade: Pass $ 2,412 $ 2,626 $ 218,491 $ 236,393 $ 220,903 $ 239,019 Special mention 12 — 2,261 1,574 2,273 1,574 Substandard 479 264 9,400 6,009 9,879 6,273 Doubtful — — 168 99 168 99 Total $ 2,903 $ 2,890 $ 230,320 $ 244,075 $ 233,223 $ 246,965 Commercial and Industrial Credit Risk Profile by Creditworthiness Category Commercial Agricultural Tax exempt loans Total commercial and industrial (in thousands) December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 Grade: Pass $ 51,184 $ 46,120 $ 58 $ — $ 37,407 $ 38,738 $ 88,649 $ 84,858 Special mention 5,432 4,825 — — — — 5,432 4,825 Substandard 2,115 1,222 148 — 36 — 2,299 1,222 Doubtful 341 303 — — — — 341 303 Total $ 59,072 $ 52,470 $ 206 $ — $ 37,443 $ 38,738 $ 96,721 $ 91,208 Residential Real Estate and Consumer Loans Credit Risk Profile Based on Payment Activity Residential real estate Home equity Other consumer Total residential real estate and consumer (in thousands) Dec 31, 2019 Dec 31, 2018 Dec 31, 2019 Dec 31, 2018 Dec 31, 2019 Dec 31, 2018 Dec 31, 2019 Dec 31, 2018 Performing $ 407,811 $ 470,497 $ 62,504 $ 45,090 $ 1,707 $ 1,356 $ 472,022 $ 516,943 Non-performing 3,359 4,012 529 201 8 1 3,896 4,214 Total $ 411,170 $ 474,509 $ 63,033 $ 45,291 $ 1,715 $ 1,357 $ 475,918 $ 521,157 The following table summarizes information about total classified and criticized loans loans as of December 31, 2019 and December 31, 2018 . December 31, 2019 December 31, 2018 (in thousands) Business Activities Loans Acquired Loans Total Business Activities Loans Acquired Loans Total Non-accrual $ 8,354 $ 3,196 $ 11,550 $ 14,111 $ 4,124 $ 18,235 Substandard accruing 26,055 13,387 39,442 7,810 7,987 15,797 Doubtful accruing — — — — — — Total classified 34,409 16,583 50,992 21,921 12,111 34,032 Special mention 8,525 7,705 16,230 15,337 6,399 21,736 Total Criticized $ 42,934 $ 24,288 $ 67,222 $ 37,258 $ 18,510 $ 55,768

PREMISES AND EQUIPMENT

PREMISES AND EQUIPMENT	12 Months Ended
	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
PREMISES AND EQUIPMENT	PREMISES AND EQUIPMENT Year-end premises and equipment at December 31, 2019 and December 31, 2018 are summarized as follows: (in thousands, except years) 2019 2018 Estimated Useful Life Land $ 5,028 $ 4,837 N/A Buildings and improvements 52,363 50,933 5 -39 years Furniture and equipment 13,573 9,098 3 - 7 years Premises and equipment, gross 70,964 64,868 Accumulated depreciation (19,759 ) (16,064 ) Premises and equipment, net $ 51,205 $ 48,804 Depreciation expense for the years ended December 31, 2019 , 2018 and 2017 amounted to $ 4.1 million, $ 3.7 million and $ 3.5 million, respectively. Included in other assets is $1.8 million of premises held for sale as of December 31, 2019 that was identified as part of the Company's strategic review and branch optimization exercise, approved by the Board of Directors in September 2019. There was no property held for sale as of December 31, 2018. The Company measures assets held for sale at the lower of carrying amount or estimated fair value less 6% selling costs. The losses from this transfer of premises and equipment to premises held for sale totaled $1.0 million for 2019. There were no impairment charges recognized through December 31, 2019.

GOODWILL AND OTHER INTANGIBLES

GOODWILL AND OTHER INTANGIBLES	12 Months Ended
	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND OTHER INTANGIBLES	GOODWILL AND OTHER INTANGIBLES The activity impacting goodwill in 2019 and 2018 is as follows: (in thousands) 2019 2018 Balance at beginning of year $ 100,085 $ 100,085 Acquisition 18,564 — Balance at end of year $ 118,649 $ 100,085 In the fourth quarter of 2019 , the Company completed its annual goodwill impairment testing using balance sheet data as of September 30, 2019 and market data as of November 30, 2019. The analysis was performed at the consolidated Bank level of the Company, which is considered the smallest reporting unit carrying goodwill. The step one analysis under the guidance of ASC 350 was passed, and therefore step two of the goodwill impairment test was not performed and no goodwill impairment was recognized for the year ended December 31, 2019 . No impairment was recorded in 2019 and 2018 . The components of other intangible assets in 2019 and 2018 are as follows: 2019 (in thousands) Gross Intangible Assets Accumulated Amortization Net Intangible Assets Core deposit intangible (non-maturity deposits) $ 9,483 $ (2,635 ) $ 6,848 Customer list and other intangibles 2,065 (272 ) 1,793 Total $ 11,548 $ (2,907 ) $ 8,641 2018 (in thousands) Gross Intangible Assets Accumulated Amortization Net Intangible Assets Core deposit intangible (non-maturity deposits) $ 8,586 $ (1,878 ) $ 6,708 Customer list and other intangibles 919 (168 ) 751 Total $ 9,505 $ (2,046 ) $ 7,459 Other intangible assets are amortized on a straight-line basis over their estimated lives, which range from eight and a half years to twelve years. Amortization expenses related to intangibles totaled $ 861 thousand in 2019 , $ 828 thousand in 2018 and $ 812 thousand in 2017 . The estimated aggregate future amortization expense for other intangible assets remaining at year end 2019 is as follows: (in thousands) Other Intangible Assets 2020 $ 975 2021 932 2022 932 2023 932 2024 932 and thereafter 3,938 Total other intangible assets $ 8,641

DEPOSITS

DEPOSITS	12 Months Ended
	Dec. 31, 2019
Deposits [Abstract]
DEPOSITS	DEPOSITS A summary of time deposits at December 31, 2019 and December 31, 2018 were as follows: (in thousands) December 31, 2019 December 31, 2018 Time less than $100,000 $ 600,747 $ 622,478 Time $100,000 through $250,000 225,505 193,535 Time $250,000 or more 106,383 116,780 Total time deposits $ 932,635 $ 932,793 At December 31, 2019 and December 31, 2018 , the scheduled maturities by year for time deposits were as follows: (in thousands) December 31, 2019 December 31, 2018 Within 1 year $ 555,074 $ 505,313 Over 1 year to 2 years 287,934 258,176 Over 2 years to 3 years 51,444 123,337 Over 3 years to 4 years 31,262 14,494 Over 4 years to 5 years 6,883 31,353 Over 5 years 38 120 Total $ 932,635 $ 932,793 Included in time deposits are brokered deposits of $526.9 million and $466.9 million at December 31, 2019 and December 31, 2018 , respectively. Also included in time deposits are reciprocal deposits of $64.1 million and $52.4 million at December 31, 2019 and December 31, 2018 , respectively.

BORROWED FUNDS

BORROWED FUNDS	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
BORROWED FUNDS	BORROWED FUNDS Borrowed funds at December 31, 2019 and December 31, 2018 are summarized, as follows: December 31, 2019 December 31, 2018 (in thousands, except ratios) Amount Weighted Average Rate Amount Weighted Average Rate Short-term borrowings Advances from the FHLB $ 303,286 1.83 % $ 611,683 2.47 % Other borrowings 44,832 0.99 36,211 1.09 Total short-term borrowings 348,118 1.73 647,894 2.39 Long-term borrowings Advances from the FHLB 123,278 1.93 32,929 1.86 Subordinated borrowings 59,920 5.53 37,973 5.58 Junior subordinated borrowings — — 5,000 5.96 Total long-term borrowings 183,198 2.87 75,902 3.99 Total $ 531,316 2.11 % $ 723,796 2.56 % Short-term debt includes Federal Home Loan Bank of Boston (“FHLB”) advances with a remaining maturity of less than one year. The Company also maintains a $1.0 million secured line of credit with the FHLB that bears a daily adjustable rate calculated by the FHLB. There was no outstanding balance on the FHLB line of credit for the years ended December 31, 2019 and 2018 . The Company also has capacity to borrow funds on a secured basis utilizing the Borrower in Custody program and the Discount Window at the Federal Reserve Bank of Boston (the “FRB”). At December 31, 2019 , the Company’s available secured line of credit at the FRB was $144.2 million. The Company has pledged certain loans and securities to the FRB to support this arrangement. There were no borrowings with the FRB for the periods ended December 31, 2019 and December 31, 2018 . The Company maintains an unused unsecured federal funds line of credit with a correspondent bank that has an aggregate overnight borrowing capacity of $50 million as of December 31, 2019 and December 31, 2018 . There was no outstanding balance on the line of credit as of December 31, 2019 and December 31, 2018 . Long-term FHLB advances consist of advances with a remaining maturity of more than one year. The advances outstanding at December 31, 2019 include no callable advances and $316 thousand of amortizing advances. The advances outstanding at December 31, 2018 include no callable advances and $330 thousand of amortizing advances. All FHLB borrowings, including the line of credit, are secured by a blanket security agreement on certain qualified collateral, principally residential first mortgage loans and certain securities. A summary of maturities of FHLB advances as of December 31, 2019 is as follows: December 31, 2019 (in thousands, except rates) Amount Weighted Fixed rate advances maturing: 2020 $ 303,286 1.83 % 2021 10,662 2.21 2022 104,000 1.97 2023 1,000 — 2024 7,300 1.16 2025 and thereafter 316 4.05 Total FHLB advances $ 426,564 1.85 % In April 2008, the Bank issued fifteen year junior subordinated notes in the amount of $5.0 million due in 2023. These debt securities qualify as Tier 2 capital for the Company and the Bank. The interest rate was three-month LIBOR plus 3.45% , which was 6.24% at December 31, 2018. On October 29, 2014, the Company executed a Subordinated Note Purchase Agreement with an aggregate of $17.0 million in subordinated notes to accredited investors. The subordinated notes have a maturity date of November 1, 2024, and bear interest at a fixed rate of 6.75% per annum. The Company called both of these notes in the fourth quarter of 2019. On November 26, 2019, the Company executed a new Subordinated Note Purchase Agreement with an aggregate of $40.0 million of subordinated notes (the "Notes") to accredited investors. The Notes have a maturity date of December 1, 2029 and bear a fixed interest rate of 4.63% through December 1, 2024 payable semi-annually in arrears. From December 1, 2024 and thereafter the interest rate shall be reset quarterly to an interest rate per annum equal to the then current three-month Secured Overnight Financing Rate ("SOFR") plus 3.27% . The Company has the option beginning with the interest payment date of December 1, 2024, and on any scheduled payment date thereafter, to redeem the Notes, in whole or in part upon prior approval of the Federal Reserve. The transaction included debt issuance costs of $700 thousand that are netted against the subordinated debt. The Company also has $20.6 million in floating Junior Subordinated Deferrable Interest Debentures (“Debentures”) issued by NHTB Capital Trust II (“Trust II”) and NHTB Capital Trust III (“Trust III”), which are both Connecticut statutory trusts. The Debentures were issued on March 30, 2004, carry a variable interest rate of three-month LIBOR plus 2.79% , and mature in 2034. The debt is callable by the Company at the time when any interest payment is made. Trust II and Trust III are considered variable interest entities for which the Company is not the primary beneficiary. Accordingly, Trust II and Trust III are not consolidated into the Company’s financial statements.

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS	12 Months Ended
	Dec. 31, 2019
Retirement Benefits [Abstract]
EMPLOYEE BENEFIT PLANS	EMPLOYEE BENEFIT PLANS Pension Plans The Company maintains a legacy, employer-sponsored defined benefit pension plan (the “Plan”) for which participation and benefit accruals were frozen on January 13, 2017. The Plan was assumed in connection with a business combination in 2017. Accordingly, no employees are permitted to commence participation in the Plan and future salary increases and years of credited service are not considered when computing an employee’s benefits under the Plan. As of December 31, 2019 , all minimum Employee Retirement Income Security Act (“ERISA”) funding requirements have been met. The Company did not have any defined benefit pension plans prior to 2017. The following tables set forth information about the plan for the year ended December 31, 2019 and 2018 : (in thousands) 2019 2018 Change in projected benefit obligation: Projected benefit obligation at beginning of year $ 8,009 $ 9,020 Service cost — — Interest cost 331 315 Actuarial loss (gain) 1,068 (771 ) Benefits paid (300 ) (291 ) Settlements (182 ) (264 ) Projected benefit obligation at end of year 8,926 8,009 Change in fair value of plan assets: Fair value of plan assets at beginning of year 9,990 11,026 Expected return on plan assets 1,570 (481 ) Contributions by employer — — Benefits paid (300 ) (291 ) Settlements (182 ) (264 ) Fair value of plan assets at end of year 11,078 9,990 Overfunded status $ (2,152 ) $ (1,981 ) Amounts recognized in consolidated balance sheet: Other assets $ 2,152 $ 1,981 Net periodic pension cost is comprised of the following for the year ended December 31, 2019 and 2018 : (in thousands) 2019 2018 Interest cost $ 331 $ 315 Expected return on plan assets (638 ) (706 ) Settlement Charge — — Net periodic pension benefit credit $ (307 ) $ (391 ) (in thousands) 2019 2018 Net actuarial loss $ 145 $ 415 Settlement charge — — Net period pension benefit credit (307 ) (391 ) Total recognized in net periodic benefit (credit) cost and other comprehensive (income) loss $ (162 ) $ 24 Change in plan assets and benefit obligations recognized in accumulated other comprehensive income as of December 31, 2019 and 2018 are as follows: (in thousands) 2019 2018 Net actuarial loss $ 145 $ 415 Settlement charge — — Prior service cost 748 333 Total accumulated other comprehensive loss (pre-tax) $ 893 $ 748 The after tax components of accumulated other comprehensive loss, which have not yet been recognized in net periodic pension cost, related to the Plan are a net loss of $684 thousand. The Company expects to make no cash contributions to the pension trust during the 2020 fiscal year. The amount expected to be amortized from accumulated other comprehensive loss into net periodic pension cost over the next fiscal year is zero . The principal actuarial assumptions used at December 31, 2019 and 2018 were as follows: 2019 2018 Projected benefit obligation Discount rate 3.23 % 4.23 % Net periodic pension cost Discount rate 4.23 % 3.56 % Long-term rate of return on plan assets 6.50 6.50 The discount rate that is used in the measurement of the pension obligation is determined by comparing the expected future retirement payment cash flows of the plan to the Citigroup Above Median Double-A Curve as of the measurement date. The expected long-term rate of return on Plan assets reflects expectations of future returns as applied to the plan’s target allocation of asset classes. In estimating that rate, appropriate consideration was given to historical returns earned by equities and fixed income securities. The Company’s overall investment strategy with respect to the Plan’s assets is to maintain assets at a level that will sufficiently cover future beneficiary obligations while achieving long term growth in assets. The Plan’s targeted asset allocation is 49% equity securities and 51% fixed-income securities primarily consisting of intermediate-term products. The fair values for investment securities are determined by quoted prices in active markets, if available (Level 1). For securities where quoted prices are not available, fair values are calculated based on market prices of similar securities (Level 2). For securities where quoted prices or market prices of similar securities are not available, fair values are calculated using discounted cash flows or other market indicators (Level 3). The fair value of the Plan's assets by category and level within fair value hierarchy are as follows at December 31, 2019 and 2018 : 2019 (in thousands) Total Level 1 Level 2 Asset Category Equity mutual funds: Large-cap $ 2,144 $ 2,144 $ — Mid-cap 590 590 — Small-cap 557 557 — International 1,009 1,009 Fixed income funds: Fixed-income - core plus 4,028 4,028 — Intermediate duration 1,371 1,371 — Common stock 574 574 — Common/collective trusts - large-cap 566 — 566 Cash equivalents - money market 230 230 — Total $ 11,069 $ 10,503 $ 566 2018 (in thousands) Total Level 1 Level 2 Asset Category Equity mutual funds: Large-cap $ 1,730 $ 1,730 $ — Mid-cap 477 477 — Small-cap 469 469 — International 845 845 Fixed income funds: Fixed-income - core plus 3,945 3,945 — Intermediate duration 1,321 1,321 — Common stock 506 506 — Common/collective trusts - large-cap 469 — 469 Cash equivalents - money market 228 228 — Total $ 9,990 $ 9,521 $ 469 The Plan did not hold any assets classified as Level 3, and there were no transfers between levels during 2019 and 2018 . Estimated benefit payments under the Company's pension plan over the next 10 years at December 31, 2019 are as follows: Year Payments in Thousands 2020 $ 365 2021 364 2022 383 2023 379 2024 394 2025-2029 2,262 Non-qualified Supplemental Executive Retirement Plan The Company has non-qualified supplemental executive retirement agreements with certain retired officers. The agreements provide supplemental retirement benefits payable in installments over a period of years upon retirement or death. This agreement provides a stream of future payments in accordance with individually defined vesting schedules upon retirement, termination, or in the event that the participating executive leaves the Company following a change of control event. The following table sets forth changes in benefit obligation, changes in plan assets, and the funded status of the plan as of and for the years ended December 31, 2019 and December 31, 2018 : (in thousands) 2019 2018 Change in benefit obligation: Projected benefit obligation at beginning of year $ 3,033 $ 3,451 Service cost — — Interest cost 103 102 Actuarial loss/(gain) 221 (142 ) Benefits paid (378 ) (378 ) Projected benefit obligation at end of year $ 2,979 $ 3,033 Change in fair value of plan assets: Fair value of plan assets at beginning of year $ — $ — Expected return on plan assets — — Contributions by employer 378 378 Benefits paid (378 ) (378 ) Fair value of plan assets at end of year $ — $ — Underfunded status $ 2,979 $ 3,033 Amounts recognized in consolidated balance sheet Other liabilities $ 2,979 $ 3,033 Net periodic benefit cost is comprised of the following for the years ended December 31, 2019 and 2018 : (in thousands) 2019 2018 Interest cost $ 103 $ 102 Expected return on plan assets — — Amortization of unrecognized actuarial loss 15 29 Net periodic benefit cost $ 118 $ 131 (in thousands) 2019 2018 Net actuarial loss (gain) $ 220 $ (142 ) Amortization of unrecognized actuarial loss (15 ) (29 ) Total recognized in net periodic benefit cost and other comprehensive loss $ 205 $ (171 ) Change in plan assets and benefit obligations recognized in accumulated other comprehensive income in 2019 and 2018 are as follows: (in thousands) 2019 2018 Accumulated other comprehensive income at beginning of the year (pre-tax) $ 414 $ 585 Actuarial loss (gain) 220 (142 ) Amortization of actuarial loss (15 ) (29 ) Accumulated other comprehensive income at end of year (pre-tax) $ 619 $ 414 The after tax components of accumulated other comprehensive loss, which have not yet been recognized in net periodic benefit cost, related to the non-qualified supplemental executive retirement agreements are a net loss of $ 474 thousand. The amount expected to be amortized from accumulated other comprehensive income into net periodic benefit cost over then next fiscal year is $42 thousand. The principal actuarial assumptions used at December 31, 2019 and December 31, 2018 were as follows: 2019 2018 Discount rate beginning of year 3.83 % 3.13 % Discount rate end of year 2.65 3.83 The discount rate used in the measurement of the non-qualified supplemental executive retirement plan obligation is determined by comparing the expected future retirement payment cash flows to the Citigroup Above Median Double-A Curve as of the measurement date. The Company expects to contribute the following amounts to fund benefit payments under the supplemental executive retirement plans: (in thousands) Payments 2020 $ 293 2021 260 2022 260 2023 260 2024 260 2025-2036 2,027 401(k) Plan The Company maintains a Section 401(k) savings plan for substantially all of its employees. Employees are eligible to participate in the 401(k) Plan on the first day of any quarter following their date of hire and attainment of age 21 ½ . Under the plan, the Company makes a matching contribution of a portion of the amount contributed by each participating employee, up to a percentage of the employee’s annual salary. The plan allows for supplementary profit sharing contributions by the Company, at its discretion, for the benefit of participating employees. The total expense for this plan in 2019 , 2018 , and 2017 was $ 1.1 million , $ 1.0 million , and $ 970 thousand, respectively. Other Plans As a result of the acquisition of a business combination in 2017, the Company assumed salary continuation agreements for supplemental retirement income with certain prior executives and senior officers along with an executive indexed supplemental retirement plan for one prior executive. The total liability for these agreements included in other liabilities was $ 8.1 million at December 31, 2019 and $7.3 million at December 31, 2018 . Expense recorded in 2019 and 2018 under these agreements was $ 779 thousand and $752 thousand , respectively. The Company also assumed split-dollar life insurance agreements with the 2017 business combination with an accrued liability of $ 834 thousand as of year-end at December 31, 2019 and $671 thousand at December 31, 2018 . Expense recorded for the split-dollar life insurance agreements in 2019 was $163 thousand and $57 thousand and $9 thousand in 2018 and 2017, respectively. In 2017, a net benefit of $57 thousand relating to split-dollar life insurance agreements was recognized.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The following table summarizes the current and deferred components of income tax expense (benefit) for each of the years ended December 31, 2019 , 2018 and 2017 : (in thousands) 2019 2018 2017 Current: Federal tax expense $ 2,639 $ 6,775 $ 8,705 State tax expense 550 1,230 1,039 Total current tax expense 3,189 8,005 9,744 Deferred tax expense 1,020 (443 ) 2,898 Impact of federal tax reform enactment — — 3,988 Total income tax expense $ 4,209 $ 7,562 $ 16,630 The following table reconciles the expected federal income tax expense (computed by applying the federal statutory tax rate of 21%, 35% for years prior to 2018) to recorded income tax expense for the years ended December 31, 2019 , 2018 and 2017 : 2019 2018 2017 (in thousands, except ratios) Amount Rate Amount Rate Amount Rate Statutory tax rate $ 5,633 21.00 % $ 8,505 21.00 % $ 14,918 35.00 % Increase (decrease) resulting from: State taxes, net of federal benefit 547 2.04 908 2.24 986 2.31 Tax exempt interest (1,375 ) (5.13 ) (1,315 ) (3.25 ) (2,074 ) (4.87 ) Federal tax credits (282 ) (1.05 ) (125 ) (0.31 ) (130 ) (0.3 ) Officers' life insurance (431 ) (1.61 ) (382 ) (0.94 ) (538 ) (1.26 ) Acquisition costs — — — — 89 0.21 Stock-based compensation plans (20 ) (0.07 ) (120 ) (0.3 ) (241 ) (0.57 ) Impact of federal tax reform enactment — — — — 3,988 9.36 Other 137 0.51 91 0.23 (368 ) (0.86 ) Effective tax rate $ 4,209 15.69 % $ 7,562 18.67 % $ 16,630 39.02 % The tax effects of temporary differences that give rise to deferred tax assets and deferred tax liabilities at December 31, 2019 and 2018 are summarized below. The net deferred tax asset, which is included in other assets, amounted to $ 3.9 million at December 31, 2019 and $ 9.5 million at December 31, 2018 . The significant components of deferred tax assets and liabilities at December 31, 2019 and December 31, 2018 were as follows: 2019 2018 (in thousands) Assets Liabilities Assets Liabilities Allowance for loan losses $ 3,507 $ — $ 3,085 $ — Deferred compensation 3,383 — 3,242 — Unrealized gain or loss on securities available for sale — 1,858 2,641 — Unrealized gain or loss on derivatives 307 — 685 — Depreciation — 1,722 — 1,517 Deferred loan origination costs — 862 — 725 Non-accrual interest 381 — 374 — Branch acquisition costs and goodwill — 712 — 784 Core deposit intangible — 1,231 — 1,309 Acquisition fair value adjustments 2,223 — 3,171 — Prepaid expenses — 311 — 215 Interest rate cap premium amortization — — — 257 Mortgage servicing rights — 703 — 721 Equity compensation 468 — 335 — Prepaid pension — 359 — 366 Contract incentives 1,167 — 1,658 — Right of use asset — 2,253 — — Lease liability 2,273 — — — Other 160 — 217 — Total $ 13,869 $ 10,011 $ 15,408 $ 5,894 The Company has determined that a valuation allowance is not required for its net deferred tax asset since it is more likely than not that this asset is realizable principally through future taxable income and future reversal of existing temporary differences. The Company is subject to income tax in the U.S. federal jurisdiction and also in the states of Maine, New Hampshire and Massachusetts. The Company is no longer subject to examination by taxing authorities for years before 2016. On December 22, 2017, H.R.1, commonly known as the Tax Cuts and Jobs Act (the “Act”), was signed into law. The Act included several provisions affecting the Company's federal income tax expense, including the reduced federal income tax rate from 35% to 21% effective January 1, 2018. As a result of this rate reduction, the Company was required to re-measure, through income tax expense in the period of enactment, the deferred tax assets and liabilities using the enacted rate at which these items are expected to be recovered or settled. The re-measurement of the Company's net deferred tax asset resulted in additional 2017 income tax expense of $ 4.0 million.

DERIVATIVE FINANCIAL INSTRUMENT

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES	12 Months Ended
	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES	DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES As part of its overall asset and liability management strategy, the Company uses derivative instruments to minimize fluctuations in earnings and cash flows caused by interest rate volatility. The Company’s interest rate risk management strategy involves modifying the re-pricing characteristics of certain assets or liabilities so the changes in interest rates do not have a significant effect on net interest income. Thus all of the Company's derivative contracts are considered to be interest rate contracts. The Company recognizes its derivative instruments on the consolidated balance sheet at fair value. On the date the derivative instrument is entered into, the Company designates whether the derivative is part of a hedging relationship (i.e., cash flow or fair value hedge). The Company formally documents relationships between hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking hedge transactions. The Company also assesses, both at the hedge’s inception and on an ongoing basis, whether the derivatives used in hedging transactions are highly effective in offsetting the changes in cash flows or fair values of hedged items. Changes in fair value of derivative instruments that are highly effective and qualify as cash flow hedges are recorded in other comprehensive income or loss. The Company offers derivative products in the form of interest rate swaps, to commercial loan customers to facilitate their risk management strategies. These instruments are executed through Master Netting Arrangements ("MNA") with financial institution counterparties or Risk Participation Agreements ("RPA") with commercial bank counterparties, for which the Company assumes a pro rata share of the credit exposure associated with a borrower's performance related to the derivative contract with the counterpary. Information about derivative assets and liabilities at December 31, 2019 and December 31, 2018 , follows: December 31, 2019 Notional Amount Weighted Average Maturity Fair Value Asset (Liability) Location Fair Value Asset (Liability) (in thousands) (in years) (in thousands) Cash flow hedges: Interest rate swap on deposits $ 100,000 4.6 $ (1,311 ) Other liabilities Total cash flow hedges 100,000 (1,311 ) Fair value hedges: Interest rate swap on securities 37,190 9.6 593 Other liabilities Total fair value hedges 37,190 593 Economic hedges: Forward sale commitments 11,228 0.1 (84 ) Other liabilities Customer Loan Swaps - MNA Counterparty 135,598 7.5 (4,669 ) (1) Customer Loan Swaps - RPA Counterparty 69,505 8.8 (3,377 ) (1) Customer Loan Swaps - Customer 205,103 8.1 8,046 (1) Total economic hedges 421,434 (84 ) Non-hedging derivatives: Interest rate lock commitments 21,748 0.1 59 Other assets Total non-hedging derivatives 21,748 59 Total $ 580,372 $ (743 ) (1) Customer loan derivatives are subject to MNA or RPA arrangements with financial institution counterparties, thus assets and liabilities with the counterparty are netted for financial statement presentation. December 31, 2018 Notional Amount Weighted Average Maturity Fair Value Asset (Liability) Location Fair Value Asset (Liability) (in thousands) (in years) (in thousands) Cash flow hedges: Interest rate caps agreements $ 90,000 4.1 $ 803 Other liabilities Total cash flow hedges 90,000 803 Non-hedging derivatives: Interest rate lock commitments 957 0.1 8 Other assets Customer loan derivative liability 45,641 9.9 (1,353 ) (1) Customer loan derivative asset 45,641 9.9 1,353 (1) Total non-hedging derivatives 92,239 8 Total $ 182,239 $ 811 (1) Customer loan derivatives are subject to MNA or RPA arrangements with financial institution counterparties, thus assets and liabilities with the counterparty are netted for financial statement presentation. As of December 31, 2019, and 2018, the following amounts were recorded on the balance sheet related to cumulative basis adjustments for fair value hedges: Location of Hedged Item on Balance Sheet Carrying Amount of Hedged Assets (Liabilities) Cumulative Amount of Fair Value Hedging Adjustment in Carrying Amount December 31, 2019 Fair value hedges: Interest rate swap on securities Securities Available for Sale $ 39,026 $ 523 December 31, 2018 Fair value hedges: Interest rate swap on securities Securities Available for Sale $ — $ — Information about derivative assets and liabilities for December 31, 2019 and December 31, 2018 , follows: Twelve Months Ended December 31, 2019 (in thousands) Amount of Gain (Loss) Recognized in Other Comprehensive Income Location of Gain (Loss) Reclassified from Other Comprehensive Income Amount of Gain (Loss) Reclassified from Other Comprehensive Income (1) Location of Gain (Loss) Recognized in Amount of Gain (Loss) Recognized in Income Cash flow hedges: Interest rate cap agreements $ — Acquisition, restructuring, and other expenses $ 3,156 Interest expense $ (603 ) Interest rate swap on deposits 2,291 Interest expense — Interest expense (2 ) Total cash flow hedges 2,291 3,156 (605 ) Fair value hedges: Interest rate swap on securities (523 ) Interest income — Interest income 7 Total fair value hedges (523 ) — 7 Economic hedges: Forward commitments — Other income — Other income (84 ) Total economic hedges — — (84 ) Non-hedging derivatives: Interest rate lock commitments — Other Income — Other Income 52 Total non-hedging derivatives — — 52 Total $ 1,768 $ 3,156 $ (630 ) (1) As of December 31, 2019 the Company does not expect any gains or losses from accumulated other comprehensive income into earnings withing the next 12 months. Twelve Months Ended December 31, 2018 (in thousands) Amount of Gain (Loss) Recognized in Other Comprehensive Income Location of Gain (Loss) Reclassified from Other Comprehensive Income Amount of Gain (Loss) Reclassified from Other Comprehensive Income (1) Location of Gain (Loss) Recognized in Amount of Gain (Loss) Recognized in Income Cash flow hedges: Interest rate cap agreements $ 486 Acquisition, restructuring, and other expenses $ — Interest expense $ (519 ) Total cash flow hedges 486 — (519 ) Economic hedges: Forward commitments — Other income — Other income 221 Total economic hedges — — — Non-hedging derivatives: Interest rate lock commitments — Other Income — Other Income 9 Total non-hedging derivatives — — 9 Total $ 486 $ — $ (510 ) (1) As of December 31, 2019 the Company does not expect any gains or losses from accumulated other comprehensive income into earnings withing the next 12 months. Cash flow hedges Interest rate cap agreements In 2014, interest rate cap agreements were purchased to limit the Company’s exposure to rising interest rates on four rolling, three-month borrowings indexed to three-month LIBOR. Under the terms of the agreements, the Company paid total premiums of $4.6 million for the right to receive cash flow payments if three-month LIBOR rises above the caps of 3.00% , thus effectively ensuring interest expense on the borrowings at maximum rates of 3.00% for the duration of the agreements. The interest rate cap agreements were designated as cash flow hedges, however the caps were terminated in the fourth quarter of 2019, with $3.2 million recognized in acquisition, restructuring and other expenses.The caps were terminated because it was probable that the original forecasted transaction would not occur by the end of the original specified period. Interest rate swaps on deposits In March and November 2019, the Company entered into interest rate swaps on brokered deposits (the "SWAPS") to limit its exposure to rising interest rates over a five year term. Under the terms of the agreement, the Company has two swaps each with a $50.0 million notional amount and pays a fixed interest rate of 2.46% and 1.55% respectively, and the financial institution counterparty pays the Company interest on the three-month LIBOR rate. The Company designated the swap as a cash flow hedge. Fair value hedges For derivative instruments that are designated and qualify as a fair value hedge, the gain or loss on the derivative instrument as well as the offsetting loss or gain on the hedged asset or liability attributable to the hedged risk are recognized in current earnings. The Company utilizes interest rate swaps designated as fair value hedges to mitigate the effect of changing interest rates on the fair values of fixed rate callable securities available-for-sale. The hedging strategy on securities converts the fixed interest rates to LIBOR-based variable interest rates. These derivatives are designated as partial term hedges of selected cash flows covering specified periods of time prior to the call dates of the hedged securities. During 2019, the Company entered into eight swap transactions with a notional amount of $37.2 million designated as fair value hedges. These derivatives are intended to protect against the effects of changing interest rates on the fair values of fixed rate securities. The fixed rates on the transactions have a weighted average of 1.696% . Economic hedges Forward sale commitments The Company utilizes forward sale commitments on residential mortgage loans to hedge interest rate risk and the associated effects on the fair value of interest rate lock commitments and loans originated for sale. The forward sale commitments are accounted for as derivatives. The Company typically uses a combination of best efforts and mandatory delivery contracts. The contracts are loan sale agreements where the Company commits to deliver a certain principal amount of mortgage loans to an investor at a specified price on or before a specified date. Generally, the Company may enter into contracts just prior to the loan closing with a customer. Customer loan derivatives The Company enters into customer loan derivatives to facilitate the risk management strategies for commercial banking customers. The Company mitigates this risk by entering into equal and offsetting loan swap agreements with highly rated third-party financial institutions. The Company is party to master netting arrangements with its financial institutional counterparties and the Company offsets assets and liabilities under these arrangements for financial statement presentation purposes. The master netting arrangements provide for a single net settlement of all loan swap agreements, as well as collateral or cash funds, in the event of default on, or termination of, any one contract with that counterparty. Collateral is provided by cash or securities received or posted by the counterparty with net liability positions, respectively, in accordance with contract thresholds. Currently, the Company has posted cash of $10.7 million with counterparties. The below table describes the potential effect of master netting arrangements on the consolidated balance sheet and the financial collateral pledged for these arrangements: Gross Amounts Offset in the Consolidated Balance Sheet (in thousands) Derivative Liabilities Derivative Assets Cash Collateral Pledged Net Amount As of December 31, 2019 Customer Loan Derivatives: MNA counterparty $ (4,669 ) $ 4,669 $ 10,700 $ — RPA counterparty (3,377 ) 3,377 — — Total $ (8,046 ) $ 8,046 $ 10,700 $ — Non-hedging derivatives Interest rate lock commitments The Company enters into interest rate lock commitments (“IRLCs”) for residential mortgage loans, which commit the Company to lend funds to a potential borrower at a specific interest rate and within a specified period of time. IRLCs relate to the origination of residential mortgage loans that are held for sale are considered derivative financial instruments under applicable accounting guidance. Outstanding IRLCs expose the Company to the risk that the price of the mortgage loans underlying the commitments may decline due to increases in mortgage interest rates from inception of the rate lock to the funding of the loan. The IRLCs are free-standing derivatives which are carried at fair value with changes recorded in non-interest income in the Company’s Consolidated Statements of Income. Changes in the fair value of IRLCs subsequent to inception are based on; (i) changes in the fair value of the underlying loan resulting from the fulfillment of the commitment and (ii) changes in the probability when the loan will fund within the terms of the commitment, which is affected primarily by changes in interest rates and the passage of time.

OTHER COMMITMENTS, CONTINGENCIE

OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES	OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES Customer Obligations The Company is a party to financial instruments in the normal course of business to meet financing needs of its customers. These financial instruments include commitments to extend credit, unused or unadvanced loan funds, and letters of credit. The Company uses the same lending policies and procedures to make such commitments as it uses for other lending products. Customer’s creditworthiness is evaluated on a case-by-case basis. Commitments to originate loans, including unused or unadvanced loan funds, are agreements to lend to a customer provided there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require customer payment of a fee. Since many of the commitments are expected to expire without being fully drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Standby letters of credit generally become payable upon the failure of the customer to perform according to the terms of the underlying contract with the third party, while commercial letters of credit are issued specifically to facilitate commerce and typically result in the commitment being drawn on when the underlying transaction is consummated between the customer and a third party. The contractual amount of these letters of credit represents the maximum potential future payments guaranteed by the Company. Typically these letters of credit expire if unused; therefore the total amounts do not necessarily represent future cash requirements. The following table summarizes the contractual amounts of commitments and contingent liabilities to customers as of December 31, 2019 and December 31, 2018 : (in thousands) 2019 2018 Commitments to originate new loans $ 112,669 $ 20,431 Unused funds on commercial and other lines of credit 188,098 169,063 Unadvanced funds on home equity lines of credit 114,711 106,121 Unadvanced funds on construction and real estate loans 97,500 133,130 Commercial letters of credit 2,941 1,171 Standby letters of credit — 486 Total $ 515,919 $ 430,402 Legal Claims Various legal claims arise from time to time in the normal course of business. As of December 31, 2019 , neither the Company nor its subsidiaries were involved in any pending legal proceedings believed by management to be material to the Company’s financial condition or results of operations. Periodically, there have been various claims and lawsuits involving the Company, such as claims to enforce liens, condemnation proceedings on properties in which the Company holds security interests, claims involving the making and servicing of real property loans, and other issues incident in the normal course of the Company's business. However, neither the Company nor its subsidiaries are a party to any pending legal proceedings that it believes, in the aggregate, would have a material adverse effect on the financial condition or operations of the Company. Additionally, an estimate of future, probable losses cannot be estimated as of December 31, 2019 .

SHAREHOLDERS_ EQUITY AND EARNIN

SHAREHOLDERS’ EQUITY AND EARNINGS PER COMMON SHARE	12 Months Ended
	Dec. 31, 2019
Stockholders' Equity Note [Abstract]
SHAREHOLDERS’ EQUITY AND EARNINGS PER COMMON SHARE	SHAREHOLDERS’ EQUITY AND EARNINGS PER COMMON SHARE The actual and required capital ratios at December 31, 2019 and December 31, 2018 were as follows: 2019 Actual Regulatory Minimum to be "Well-Capitalized" (in thousands, except ratios) Amount Ratio Amount Ratio Company (consolidated) Total capital to risk-weighted assets $ 341,492 13.61 % $ 263,377 10.50 % Common equity tier 1 capital to risk-weighted assets 265,205 10.57 175,584 7.00 Tier 1 capital to risk-weighted assets 285,825 11.39 213,211 8.50 Tier 1 capital to average assets 285,825 8.13 175,890 5.00 Bank Total capital to risk-weighted assets $ 310,982 12.42 % $ 262,999 10.50 % Common equity tier 1 capital to risk-weighted assets 295,315 11.79 175,332 7.00 Tier 1 capital to risk-weighted assets 295,315 11.79 212,904 8.50 Tier 1 capital to average assets 295,315 8.39 175,996 5.00 2018 Actual Regulatory Minimum to be "Well-Capitalized" (in thousands, except ratios) Amount Ratio Amount Ratio Company (consolidated) Total capital to risk-weighted assets $ 331,628 14.23 % $ 230,093 9.88 % Common equity tier 1 capital to risk-weighted assets 274,838 11.80 148,542 6.38 Tier 1 capital to risk-weighted assets 295,458 12.68 183,492 7.88 Tier 1 capital to average assets 295,458 8.53 173,102 5.00 Bank Total capital to risk-weighted assets $ 321,390 13.82 % $ 229,707 9.88 % Common equity tier 1 capital to risk-weighted assets 302,220 12.99 148,292 6.38 Tier 1 capital to risk-weighted assets 302,220 12.99 183,184 7.88 Tier 1 capital to average assets 302,220 8.74 172,990 5.00 At each date shown, the Company and the Bank met the conditions to be classified as “well-capitalized” under the relevant regulatory framework. To be categorized as “well-capitalized”, an institution must maintain minimum total risk-based, Tier 1 risk-based, and Tier 1 leverage ratios as set forth in the table above. The Company and the Bank are subject to the Basel III rule that requires the Company and the Bank to assess their Common equity tier 1 capital to risk weighted assets and the Company and the Bank each exceed the minimum to be “well-capitalized.” Effective January 1, 2019, all banking organizations must maintain a minimum Common equity tier 1 risk-based capital ratio of 7.0% , a minimum Tier 1 risk-based capital ratio of 8.5% and a minimum Total risk-based capital ratio of 10.5% . The required regulatory minimum conservation buffer to be “well-capitalized” began to be phased-in incrementally, starting at 0.625% on January 1, 2016, 1.25% on January 1, 2017, 1.875% on January 1, 2018 and increased to 2.5% on January 1, 2019. The final capital rules impose restrictions on capital distributions and certain discretionary cash bonus payments if the minimum capital conservation buffer is not met. Accumulated Other Comprehensive Income Components of accumulated other comprehensive income at December 31, 2019 and December 31, 2018 are as follows: (in thousands) 2019 2018 Other accumulated comprehensive income (loss), before tax: Net unrealized gain (loss) on AFS securities $ 7,342 $ (11,304 ) Net unrealized loss on derivative hedges (718 ) (2,934 ) Net unrealized loss on post-retirement plans (1,512 ) (1,162 ) Income taxes related to items of accumulated other comprehensive (income) loss: Net unrealized (gain) loss on AFS securities (1,793 ) 2,641 Net unrealized loss on derivative hedges 237 685 Net unrealized loss on post-retirement plans 355 272 Accumulated other comprehensive income (loss) $ 3,911 $ (11,802 ) The following table presents the components of other comprehensive income in 2019 , 2018 and 2017 : 2019 (in thousands) Before Tax Tax Effect Net of Tax Net unrealized gain on AFS securities: Net unrealized gain arising during the period $ 18,883 $ (4,489 ) $ 14,394 Less: reclassification adjustment for gains (losses) realized in net income 237 (55 ) 182 Net unrealized gain on AFS securities 18,646 (4,434 ) 14,212 Net unrealized loss on derivative hedges: Net unrealized loss arising during the period (940 ) 289 (651 ) Less: reclassification adjustment for gains (losses) realized in net income (3,156 ) 737 (2,419 ) Net unrealized gain on derivative hedges 2,216 (448 ) 1,768 Net unrealized gain on post-retirement plans: Net unrealized gain arising during the period (350 ) 83 (267 ) Less: reclassification adjustment for gains (losses) realized in net income — — — Net unrealized gain on post-retirement plans (350 ) 83 (267 ) Other comprehensive income $ 20,512 $ (4,799 ) $ 15,713 2018 (in thousands) Before Tax Tax Effect Net of Tax Net unrealized loss on AFS securities: Net unrealized loss arising during the period $ (9,487 ) $ 2,194 $ (7,293 ) Less: reclassification adjustment for gains (losses) realized in net income (924 ) 216 (708 ) Net unrealized loss on AFS securities (8,563 ) 1,978 (6,585 ) Net unrealized gain on derivative hedges: Net unrealized gain arising during the period 654 (168 ) 486 Less: reclassification adjustment for gains (losses) realized in net income — — — Net unrealized gain on derivative hedges 654 (168 ) 486 Net unrealized loss on post-retirement plans: Net unrealized loss arising during the period (245 ) 54 (191 ) Less: reclassification adjustment for gains (losses) realized in net income (29 ) 7 (22 ) Net unrealized loss on post-retirement plans (216 ) 47 (169 ) Other comprehensive loss $ (8,125 ) $ 1,857 $ (6,268 ) 2017 (in thousands) Before Tax Tax Effect Net of Tax Net unrealized gain on AFS securities: Net unrealized gain arising during the period $ 545 $ (121 ) $ 424 Less: reclassification adjustment for gains (losses) realized in net income 19 (7 ) 12 Net unrealized gain on AFS securities 526 (114 ) 412 Net unrealized loss on derivative hedges: Net unrealized loss arising during the period (838 ) 386 (452 ) Less: reclassification adjustment for gains (losses) realized in net income — — — Net unrealized loss on derivative hedges (838 ) 386 (452 ) Net unrealized loss on post-retirement plans: Net unrealized loss arising during the period (347 ) 146 (201 ) Less: reclassification adjustment for gains (losses) realized in net income (21 ) 8 (13 ) Net unrealized loss on post-retirement plans (326 ) 138 (188 ) Other comprehensive loss $ (638 ) $ 410 $ (228 ) The following table presents the changes in each component of accumulated other comprehensive income/(loss) in 2019 , 2018 and 2017 : 2019 (in thousands) Net unrealized gain on AFS Securities Net loss on effective derivative hedges Net unrealized loss on post-retirement plans Total Balance at beginning of period $ (8,665 ) $ (2,249 ) $ (888 ) $ (11,802 ) Other comprehensive gain/(loss) before reclassifications 14,394 (651 ) (267 ) 13,476 Less: amounts reclassified from accumulated other comprehensive income 182 (2,419 ) — (2,237 ) Total other comprehensive loss 14,212 1,768 (267 ) 15,713 Balance at end of period $ 5,547 $ (481 ) $ (1,155 ) $ 3,911 2018 (in thousands) Net unrealized gain on AFS Securities Net loss on effective derivative hedges Net unrealized loss on post-retirement plans Total Balance at beginning of period $ (1,713 ) $ (2,250 ) $ (591 ) $ (4,554 ) Other comprehensive gain/(loss) before reclassifications (7,293 ) 486 (191 ) (6,998 ) Less: amounts reclassified from accumulated other comprehensive income (708 ) — (22 ) (730 ) Total other comprehensive loss (6,585 ) 486 (169 ) (6,268 ) Less: amounts reclassified from accumulated other comprehensive income for ASU 2018-02 (367 ) (485 ) (128 ) (980 ) Balance at end of period $ (8,665 ) $ (2,249 ) $ (888 ) $ (11,802 ) 2017 (in thousands) Net unrealized gain on AFS Securities Net loss on effective derivative hedges Net unrealized loss on post-retirement plans Total Balance at beginning of period $ (2,125 ) $ (1,798 ) $ (403 ) $ (4,326 ) Other comprehensive gain/(loss) before reclassifications 424 (452 ) (201 ) (229 ) Less: amounts reclassified from accumulated other comprehensive income 12 — (13 ) (1 ) Total other comprehensive loss 412 (452 ) (188 ) (228 ) Balance at end of period $ (1,713 ) $ (2,250 ) $ (591 ) $ (4,554 ) The following tables presents the amounts reclassified out of each component of accumulated other comprehensive income (loss) in 2019, 2018 and 2017 : (in thousands) 2019 2018 2017 Affected Line Item where Net Income is Presented Realized gains on AFS securities: Before tax $ 237 $ (924 ) $ 19 Non-interest income Tax effect (55 ) 216 (7 ) Tax expense Total reclassifications for the period $ 182 $ (708 ) $ 12 Net of tax (in thousands) 2019 2018 2017 Affected Line Item where Net Income is Presented Realized loss on effective derivative hedges: Before tax $ (3,156 ) $ — $ — Non-interest expense Tax effect 737 — — Tax benefit Total reclassifications for the period $ (2,419 ) $ — $ — Net of tax (in thousands) 2019 2018 2017 Affected Line Item where Net Income is Presented Realized loss on post-retirement plans: Before tax $ — $ (29 ) $ (21 ) Salaries and benefits Tax effect — 7 8 Tax benefit Total reclassifications for the period $ — $ (22 ) $ (13 ) Net of tax Earnings per share have been computed based on the following (average diluted shares outstanding are calculated using the treasury stock method): (in thousands, except per share and share data) 2019 2018 2017 Net income $ 22,620 $ 32,937 $ 25,993 Average number of basic common shares outstanding 15,540,884 15,487,686 15,183,615 Plus: dilutive effect of stock options and awards outstanding 46,109 76,778 106,795 Average number of diluted common shares outstanding 15,586,993 15,564,464 15,290,410 Anti-dilutive options excluded from earnings calculation — 7,991 8,659 Earnings per share: Basic $ 1.46 $ 2.13 $ 1.71 Diluted $ 1.45 $ 2.12 $ 1.70

STOCK BASED COMPENSATION PLANS

STOCK BASED COMPENSATION PLANS	12 Months Ended
	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
STOCK BASED COMPENSATION PLANS	STOCK BASED COMPENSATION PLANS On October 3, 2000, the shareholders of the Company approved the Bar Harbor Bankshares and Subsidiaries Incentive Stock Option Plan of 2000 (the “ISOP”) for its officers and employees, which provided for the issuance of up to 1,012,500 shares of common stock. The purchase price of the stock covered by each option must be at least 100% of the trading value on the date such option was granted. Vesting terms ranged from three to seven years. According to the ISOP no option shall be granted after October 3, 2010, ten years after the effective date of the ISOP. On May 19, 2015, the shareholders of the Company approved the adoption of the 2015 Bar Harbor Bankshares and Subsidiaries Equity Incentive Plan (the “2015 Plan”) for employees and directors of the Company and its subsidiaries. Subject to adjustment for stock splits, stock dividends, and similar events, the total number of shares of common stock that can be issued under the 2015 Plan over the 10 year period in which the plan will be in place is 420,000 shares of common stock. The 2015 Plan is administered by the Company’s Compensation Committee. All employees and directors of the Company and its subsidiaries are eligible to participate in the 2015 Plan, subject to the discretion of the administrator and the terms of the 2015 Plan. The maximum stock award granted to one individual may not exceed 30,000 shares of common stock (subject to adjustment for stock splits, and similar events) for any calendar year. No grants were made after May 19, 2019 pursuant to this plan. On May 21, 2019 the shareholders of the Company approved the adoption of the 2019 Bar Harbor Bankshares and Subsidiaries Equity Incentive Plan (the “2019 Plan”) for employees and directors of the Company and its subsidiaries. Subject to adjustment for stock splits, stock dividends, and similar events, the total number of shares of common stock that can be issued under the 2019 Plan over the 10 year period in which the plan will be in place is 500,000 shares of common stock. The 2019 Plan is administered by the Company’s Compensation Committee. All employees and directors of the Company and its subsidiaries are eligible to participate in the 2019 Plan, subject to the discretion of the administrator and the terms of the 2019 Plan. As of December 31, 2019 there were 467,616 shares available for grant under this plan. In April of 2013, the Board of Directors approved a Long Term Incentive Program for senior management members. The program is designed to be made up of a series of three year rolling plans utilizing the shares made available through the approved equity plans. Grants may be given in time vested restricted stock awards, time vested restricted stock units or performance vested restricted stock units, or a combination of these types of grants. Compensation expense recognized in connection with the stock based compensation plans are presented in the following table for the years ended December 31, 2019 , 2018 , and 2017 : (in thousands) 2019 2018 2017 Stock options and restricted stock awards $ 328 $ 350 $ 399 Performance stock units 170 237 290 Restricted stock units 854 711 585 Total compensation expense $ 1,352 $ 1,298 $ 1,274 The total tax benefit recognized associated with stock options and restricted stock awards for the years ended 2019 , 2018 and 2017 was $ 78 thousand, $81 thousand and $308 thousand , respectively. The total tax benefit recognized associated with restricted stock units and performance stock units for the years ended 2019 , 2018 and 2017 was $ 244 thousand, $221 thousand and $423 thousand , respectively. Stock Option and Restricted Stock Awards Activity: A summary combined status of the stock option and restricted stock awards as of December 31, 2019 and 2018 , and changes during the year then ended is presented below: Stock Options Number of Stock Options Outstanding Weighted Average Exercise Price Aggregate Intrinsic Value (in thousands) Outstanding at January 1, 2019 121,637 $ 19.96 Granted — — Exercised (13,853 ) 18.44 Forfeited — — Outstanding at December 31, 2019 107,784 $ 20.15 $ 565 Ending vested and expected to vest December 31, 2019 107,784 $ 20.15 $ 565 Exercisable at December 31, 2019 98,460 20.48 483 Stock Options Number of Stock Options Outstanding Weighted Average Exercise Price Aggregate Intrinsic Value (in thousands) Outstanding at January 1, 2018 169,921 $ 18.95 Granted — — Exercised (47,534 ) 16.32 Forfeited (750 ) 22.16 Outstanding at December 31, 2018 121,637 $ 19.96 $ 313 Ending vested and expected to vest December 31, 2018 121,637 $ 19.96 $ 313 Exercisable at December 31, 2018 101,554 20.66 192 There were no restricted stock awards granted in 2019. Restricted Stock Awards Number of Restricted Stock Awards Outstanding Weighted Average Grant Date Fair Value Outstanding at January 1, 2018 — $ — Awarded 12,420 24.14 Vested (12,420 ) 24.14 Forfeited — — Outstanding at December 31, 2018 — $ — The intrinsic value of the options exercised under both plans for the years ended December 31, 2019 , 2018 , and 2017 , was approximately $98 thousand , $760 thousand and $708 thousand , respectively. As of December 31, 2019 , there was approximately $14 thousand of unrecognized compensation cost related to unvested stock option awards, net of estimated forfeitures. This amount is expected to be recognized as expense over the next six years, with a weighted average recognition period of 0.56 years. Performance Stock Units During 2019 , performance stock unit awards were granted to certain executive officers providing the opportunity to earn shares of common stock of the Company collectively ranging from zero to 26,952 shares, based on the Company’s performance compared to peers. The performance stock units granted will vest only if the performance measures are achieved. Failure to achieve the performance measures will result in all or a portion of shares being forfeited. The performance shares granted had a weighted average fair value of $ 23.24 at the date of grant, and will be earned over a three year performance period. During 2018 , performance stock unit awards were granted to certain executive officers providing the opportunity to earn shares of common stock of the Company collectively ranging from zero to 19,973 shares, based on the Company’s performance compared to peers. The performance stock units granted will vest only if the performance measures are achieved. Failure to achieve the performance measures will result in all or a portion of shares being forfeited. The performance shares granted had a weighted average fair value of $ 26.30 at the date of grant, and will be earned over a three year performance period. The following table summarizes performance units at target as of December 31, 2019 and 2018 : Performance Stock Units Number of Performance Stock Units Outstanding Weighted Average Grant Date Fair Value Nonvested at January 1, 2019 37,865 $ 26.77 Awarded 17,968 23.24 Vested and exercised (11,801 ) 23.92 Forfeited (974 ) 28.78 Nonvested at December 31, 2019 43,058 $ 26.01 Performance Stock Units Number of Performance Stock Units Outstanding Weighted Average Grant Date Fair Value Nonvested at January 1, 2018 33,627 $ 25.21 Awarded 23,011 26.30 Vested and exercised (15,017 ) 22.25 Forfeited (3,756 ) 27.94 Nonvested at December 31, 2018 37,865 $ 26.77 The intrinsic value of the performance stock units vested and exercised for the years ended December 31, 2019, 2018 and 2017, was $376 thousand , $337 thousand and $285 thousand , respectively. Restricted Stock Units During 2019 and 2018 , restricted stock units were granted to certain executive officers and senior vice presidents. The restricted shares granted were valued between $ 22.07 and $24.67 for 2019 and between $ 24.85 and $ 30.19 for 2018 the fair market value at the date of grant and vest annually over three years. The following table summarizes restricted stock units activity in 2019 and 2018 : Restricted Stock Units Number of Restricted Stock Units Outstanding Weighted Average Grant Date Fair Value Outstanding at January 1, 2019 80,740 $ 28.24 Granted 50,352 22.45 Vested and exercised (19,411 ) 26.11 Forfeited (5,129 ) 29.28 Outstanding at December 31, 2019 106,552 $ 25.82 Restricted Stock Units Number of Restricted Stock Units Outstanding Weighted Average Grant Date Fair Value Outstanding at January 1, 2018 74,168 $ 26.60 Granted 46,743 28.66 Vested and exercised (26,489 ) 24.36 Forfeited (13,682 ) 28.28 Outstanding at December 31, 2018 80,740 $ 28.24 The intrinsic value of the restricted stock units vested and exercised for the years ended December 31, 2019, 2018 and 2017, was $493 thousand , $594 thousand and $272 thousand , respectively. As of December 31, 2019 , there was $549 thousand of total unrecognized compensation cost related to nonvested restricted stock units and performance stock units granted under the Plans. That cost is expected to be recognized over a weighted average period of 1.65 years.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS A description of the valuation methodologies used for assets and liabilities measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. These valuation methodologies were applied to all of the Company’s financial assets and financial liabilities that are carried at fair value. Recurring Fair Value Measurements The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of December 31, 2019 and December 31, 2018 , segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value. December 31, 2019 (in thousands) Level 1 Inputs Level 2 Inputs Level 3 Inputs Total Fair Value Available for sale securities: Mortgage-backed securities: US Government-sponsored enterprises $ — $ 321,969 $ — $ 321,969 US Government agency — 99,661 — 99,661 Private label — 19,533 — 19,533 Obligations of states and political subdivisions thereof — 142,006 — 142,006 Corporate bonds — 80,061 — 80,061 Derivative assets — 6,791 59 6,850 Derivative liabilities — (8,102 ) (84 ) (8,186 ) December 31, 2018 (in thousands) Level 1 Inputs Level 2 Inputs Level 3 Inputs Total Fair Value Available for sale securities: Mortgage-backed securities: US Government-sponsored enterprises $ — $ 404,952 $ — $ 404,952 US Government agency — 110,512 — 110,512 Private label — 20,382 — 20,382 Obligations of states and political subdivisions thereof — 132,265 — 132,265 Corporate bonds — 57,726 — 57,726 Derivative assets — 2,156 8 2,164 Derivative liabilities — (1,353 ) — (1,353 ) Securities Available for Sale: All securities and major categories of securities classified as available for sale are reported at fair value utilizing Level 2 inputs. For these securities, the Company obtains fair value measurements from independent pricing providers. The fair value measurements used by the pricing providers consider observable data that may include dealer quotes, market maker quotes and live trading systems. If quoted prices are not readily available, fair values are determined using matrix pricing models, or other model-based valuation techniques requiring observable inputs other than quoted prices such as market pricing spreads, credit information, callable features, cash flows, the U.S. Treasury yield curve, trade execution data, market consensus prepayment speeds, default rates, and the securities’ terms and conditions, among other things. Derivative Assets and Liabilities Cash Flow Hedges. The valuation of the Company's cash flow hedges are obtained from a third party. The pricing analysis is based on observable inputs for the contractual terms of the derivatives, including the period to maturity and interest rate curves. The inputs used to value the Company's cash flow hedges are all classified as Level 2 measurements. Interest Rate Lock Commitments. The Company enters into IRLCs for residential mortgage loans, which commit the Company to lend funds to a potential borrower at a specific interest rate and within a specified period of time. The estimated fair value of commitments to originate residential mortgage loans for sale is based on quoted prices for similar loans in active markets. However, this value is adjusted by a factor which considers the likelihood of a loan in a lock position will ultimately close. The closing ratio is derived from the Company’s internal data and is adjusted using significant management judgment. As such, IRLCs are classified as Level 3 measurements. Forward Sale Commitments . The Company utilizes forward sale commitments as economic hedges against potential changes in the values of the IRLCs and loans originated for sale. The fair values of the Company’s mandatory delivery loan sale commitments are determined similarly to the IRLCs using quoted prices in the market place that are observable. However, closing ratios included in the calculation are internally generated and are based on management’s judgment and prior experience, which are not considered observable factors. As such, mandatory delivery forward commitments are classified as Level 3 measurements. Customer Loan Derivatives. The valuation of the Company’s customer loan derivatives is obtained from a third-party pricing service and is determined using a discounted cash flow analysis on the expected cash flows of each derivative. The pricing analysis is based on observable inputs for the contractual terms of the derivatives, including the period to maturity and interest rate curves. The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of master netting arrangements and any applicable credit enhancements, such as collateral postings. Although the Company has determined that the majority of the inputs used to value its customer loan derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of December 31, 2019 , the Company assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. The table below presents the changes in Level 3 assets and liabilities that were measured at fair value on a recurring basis in 2019 and 2018 . Assets (Liabilities) (in thousands) Interest Rate Lock Commitments Forward Commitments December 31, 2017 $ (1 ) $ (221 ) Realized loss recognized in non-interest income 9 221 December 31, 2018 8 — Realized gain (loss) recognized in non-interest income 51 (84 ) December 31, 2019 $ 59 $ (84 ) Quantitative information about the significant unobservable inputs within Level 3 recurring assets and liabilities is as follows: (in thousands, except ratios) Fair Value Valuation Techniques Unobservable Inputs Significant Unobservable Input Value Assets (Liabilities) Interest Rate Lock Commitment $ 59 Historical trend Closing Ratio 90 % Pricing Model Origination Costs, per loan $ 1.7 Forward Commitments (84 ) Quoted prices for similar loans in active markets. Freddie Mac pricing system Pair-off contract price Total $ (25 ) There were no level 3 assets and liabilities that were measured at fair value on a recurring basis in 2019 and 2018 . Non-Recurring Fair Value Measurements The Company is required, on a non-recurring basis, to adjust the carrying value or provide valuation allowances for certain assets using fair value measurements in accordance with U.S. GAAP. The following is a summary of applicable non-recurring fair value measurements. December 31, 2019 December 31, 2018 December 31, 2019 Fair Value Measurement Date as of December 31, 2019 (in thousands) Level 3 Inputs Level 3 Total Gains (Losses) Level 3 Inputs Assets Impaired loans $ 9,625 $ 15,213 $ 5,588 December 2019 Capitalized servicing rights 4,301 4,882 — December 2019 Other real estate owned 2,236 2,351 (166 ) August 2019 Premises held for sale 1,764 — — September 2019 Total $ 17,926 $ 22,446 $ 5,422 Quantitative information about the significant unobservable inputs within Level 3 non-recurring assets as of December 31, 2019 and December 31, 2018 is as follows: Fair Value Range (Weighted Average) (a) (in thousands, except ratios) December 31, 2019 Valuation Techniques Unobservable Inputs Assets Impaired loans $ 6,137 Fair value of collateral - appraised value Loss severity 0% to 55.00% Appraised value $0 to $6,915 Impaired loans 3,488 Discounted cash flow Discount rate 2.88% to 9.50% Cash flows $22 to $1,002 Capitalized servicing rights 4,301 Discounted cash flow Constant prepayment rate (CPR) 9.95 % Discount rate 10.07 % Other real estate owned 2,236 Fair value of collateral less selling costs Appraised value $2,695 Selling costs 10% to 20% Premises held for sale (b) 1,764 Fair value of asset less selling costs Appraised value $136 to $527 Selling Costs 6.00 % Total $ 17,926 ______________________________________ (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individuals properties. (b) The carrying value of premises held for sale was $1.8 million as of December 31, 2019. There were no premises held for sale as of December 31, 2018. Fair Value Range (Weighted Average) (a) (in thousands, except ratios) December 31, 2018 Valuation Techniques Unobservable Inputs Assets Impaired loans $ 11,676 Fair value of collateral - appraised value Loss severity 0% to 55.00% Appraised value $0 to $6,915 Impaired loans 3,537 Discount cash flow Discount rate 2.88% to 9.50% Cash flows $22 to $1,072 Capitalized servicing rights 4,882 Discounted cash flow Constant prepayment rate (CPR) 8.19 % Discount rate 10.08 % Other real estate owned 2,351 Fair value of collateral less selling costs Appraised value $2,700 Selling costs 12.93 % Total $ 22,446 _____________________________________ (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individuals properties. There were no Level 1 or Level 2 non-recurring fair value measurements for the periods ended December 31, 2019 and December 31, 2018 . Impaired Loans. Loans are generally not recorded at fair value on a recurring basis. Periodically, the Company records non-recurring adjustments to the carrying value of loans based on fair value measurements for partial charge-offs of the uncollectible portions of those loans. Non-recurring adjustments can also include certain impairment amounts for collateral-dependent loans calculated when establishing the allowance for credit losses. Such amounts are generally based on the fair value of the underlying collateral supporting the loan and, as a result, the carrying value of the loan less the calculated valuation amount does not necessarily represent the fair value of the loan. Real estate collateral is typically valued using appraisals or other indications of value based on recent comparable sales of similar properties or assumptions generally observable in the marketplace. However, the choice of observable data is subject to significant judgment, and there are often adjustments based on judgment in order to make observable data comparable and to consider the impact of time, the condition of properties, interest rates, and other market factors on current values. Additionally, commercial real estate appraisals frequently involve discounting of projected cash flows, which relies inherently on unobservable data. Therefore, non-recurring fair value measurement adjustments that relate to real estate collateral have generally been classified as Level 3. Estimates of fair value for other collateral that supports commercial loans are generally based on assumptions not observable in the marketplace and therefore such valuations have been classified as Level 3. Capitalized loan servicing rights . A loan servicing right asset represents the amount by which the present value of the estimated future net cash flows to be received from servicing loans exceed adequate compensation for performing the servicing. The fair value of servicing rights is estimated using a present value cash flow model. The most important assumptions used in the valuation model are the anticipated rate of the loan prepayments and discount rates. Adjustments are only recorded when the discounted cash flows derived from the valuation model are less than the carrying value of the asset. Although some assumptions in determining fair value are based on standards used by market participants, some are based on unobservable inputs and therefore are classified in Level 3 of the valuation hierarchy. Other real estate owned (“OREO”). OREO results from the foreclosure process on residential or commercial loans issued by the Bank. Upon assuming the real estate, the Company records the property at the fair value of the asset less the estimated sales costs. Thereafter, OREO properties are recorded at the lower of cost or fair value less the estimated sales costs. OREO fair values are primarily determined based on Level 3 data including sales comparables and appraisals. Premises held for sale. Premises held for sale, identified as part of the Company’s strategic review and branch optimization exercise, were transferred from premises and equipment at the lower of amortized cost or fair value less the estimated sales costs. Assets held for sale fair values are primarily determined based on Level 3 data including sales comparables and appraisals. Summary of Estimated Fair Values of Financial Instruments The following table represents estimated fair values, and related carrying amounts of the Company’s financial instruments as of December 31, 2019 and December 31, 2018 . Certain financial instruments and all non-financial instruments are excluded from disclosure requirements. Accordingly, the aggregate fair value amounts presented herein may not necessarily represent the underlying fair value of the Company. December 31, 2019 (in thousands) Carrying Amount Fair Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 56,910 $ 56,910 $ 56,910 $ — $ — Securities available for sale 663,230 663,230 — 663,230 — FHLB bank stock 20,679 20,679 — 20,679 — Net loans 2,625,739 2,634,147 — — 2,634,147 Accrued interest receivable 3,294 3,294 — 3,294 — Cash surrender value of bank-owned life insurance policies 75,863 75,863 — 75,863 — Derivative assets 6,850 6,850 — 6,791 59 Financial Liabilities Non-maturity deposits $ 1,763,116 $ 1,751,481 $ — $ 1,751,481 $ — Time deposits 932,635 932,886 — 932,886 — Other short-term borrowings 44,832 44,831 — 44,831 — Federal Home Loan Bank advances 426,564 425,989 — 425,989 — Subordinated borrowings 59,920 59,920 — 59,920 — Derivative liabilities (8,186 ) (8,186 ) — (8,102 ) (84 ) December 31, 2018 (in thousands) Carrying Fair Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 98,754 $ 98,754 $ 98,754 $ — $ — Securities available for sale 725,837 725,837 — 725,837 — FHLB bank stock 35,659 35,659 — 35,659 — Net loans 2,476,361 2,415,863 — — 2,415,863 Accrued interest receivable 3,533 3,533 — 3,533 — Cash surrender value of bank-owned life insurance policies 73,810 73,810 — 73,810 — Derivative assets 2,164 2,164 — 2,156 8 Financial Liabilities Non-maturity deposits $ 1,550,445 $ 1,476,673 $ — $ 1,476,673 $ — Time deposits 932,793 927,577 — 927,577 — Other short-term borrowings 36,211 36,171 — 36,171 — Federal Home Loan Bank advances 644,611 643,065 — 643,065 — Subordinated borrowings 37,973 37,973 — 37,973 — Junior subordinated borrowings 5,000 3,923 — 3,923 — Derivative liabilities (1,353 ) (1,353 ) — — (1,353 ) Other than as discussed above, the following methods and assumptions were used by management to estimate the fair value of significant classes of financial instruments for which it is practicable to estimate that value. Cash and cash equivalents. Carrying value is assumed to represent fair value for cash and cash equivalents that have original maturities of 90 days or less. FHLB bank stock and restricted securities. Carrying value approximates fair value based on the redemption provisions of the issuers. Cash surrender value of life insurance policies. Carrying value approximates fair value. Loans, net. The fair value of loans were calculated on an individual basis with consideration given to the loans' underlying characteristics, including account types, remaining terms, annual interest rates or coupons, interest types, timing of principal and interest payments, current market rates, risk ratings, credit ratings and remaining balances. A discounted cash flow model is used to estimate the fair value of the loans using assumptions for the coupon rates, remaining maturities, prepayment speeds, liquidity premiums, projected default probabilities, losses given defaults, and estimates of prevailing discount rates. Accrued interest receivable. Carrying value approximates fair value. Deposits. The fair value of demand, non-interest bearing checking, savings and money market deposits is determined as the amount payable on demand at the reporting date. The fair value of time deposits is estimated by discounting the estimated future cash flows using market rates offered for deposits of similar remaining maturities. Borrowed funds. The fair value of borrowed funds is estimated by discounting the future cash flows using market rates for similar borrowings. Such funds include all categories of debt and debentures in the table above. Subordinated borrowings. The Company utilizes a pricing service along with internal models to estimate the valuation of its subordinated debentures with variable rates. Off-balance-sheet financial instruments. Off-balance-sheet financial instruments include standby letters of credit and other financial guarantees and commitments considered immaterial to the Company’s financial statements.

REVENUE FROM CONTRACTS WITH CUS

REVENUE FROM CONTRACTS WITH CUSTOMERS REVENUE FROM CONTRACTS WITH CUSTOMERS	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue From Contracts With Customers	REVENUE FROM CONTRACTS WITH CUSTOMERS The Company has accounted for the various non-interest revenue streams and related contracts under ASC 606 as of January 1, 2018, using the modified retrospective method for all contracts not completed as of the date of adoption. Disaggregation of Revenue The following tables present disaggregation of the Company’s non-interest revenue by major business line and timing of revenue recognition for the transfer of products or services: Twelve Months Ended December 31, (in thousands) 2019 2018 Major Products/Service Lines Trust management fees $ 11,098 $ 11,017 Financial services fees 966 968 Interchange fees 4,899 4,434 Customer deposit fees 4,281 3,800 Other customer service fees 946 1,304 Total $ 22,190 $ 21,523 Twelve Months Ended December 31, (in thousands) 2019 2018 Timing of Revenue Recognition Products and services transferred at a point in time $ 10,748 $ 9,766 Products and services transferred over time 11,442 11,757 Total $ 22,190 $ 21,523 Trust Management Fees The trust management business generates revenue through a range of fiduciary services including trust and estate administration, wealth advisory, and investment management to individuals, businesses, not-for-profit organizations, and municipalities. Revenue from these services is generally recognized over time and is typically based on a time elapsed measure of progress. Certain fees, such as bill paying fees, distribution fees, real estate sale fees, and supplemental tax service fees, are recorded as revenue at a point in time upon the completion of the service. Financial Services Fees Bar Harbor Financial Services is a branch office of Infinex, an independent registered broker dealer offering securities and insurance products not affiliated with the Company or its subsidiaries. The Company has a revenue sharing agreement with Infinex for any financial service fee income generated. Financial services fees are recognized at a point in time upon the completion of monthly service requirements. Interchange Fees The Company earns interchange fees from transaction fees that merchants pay whenever a customer uses a debit card to make a purchase from the merchant. The fees are paid to the card-issuing bank to cover handling costs, fraud, bad debt costs and the risk involved in approving the payment. Interchange fees are generally recognized as revenue at a point in time upon the completion of a debit card transaction. Customer Deposit Fees The Customer Deposit business offers a variety of deposit accounts with a range of interest rates, fee schedules and other terms, which are designed to meet the customer's financial needs. Additional depositor related services provided to customers include ATM, bank-by-phone, internet banking, internet bill pay, mobile banking, and other cash management services which include remote deposit capture, ACH origination, and wire transfers. These customer deposit fees are generally recognized by the Company at a point in time upon the completion of the service. Other Customer Service Fees The Company has certain incentive and referral fee arrangements with independent third parties in which fees are earned for new account activity, product sales, or transaction volume generated for the respective third parties. The Company also earns a percentage of the fees generated from third party credit card plans promoted through the Bank. Revenue from these incentive and referral fee arrangements are recognized over time using the right to invoice measure of progress. Contract Balances with Customers The following table provides information about contract assets or receivables and contract liabilities or deferred revenues from contracts with customers. (in thousands) Balance at December 31, 2019 Balance at December 31, 2018 Balances from contracts with customers only: Other Assets $ 1,703 $ 2,866 Other Liabilities 3,114 4,923 The timing of revenue recognition, billings and cash collections results in contract assets or recievables and contract liabilities or deferred revenue on the consolidated balance sheets. For most customer contracts, fees are deducted directly from customer accounts and, therefore, there is no associated impact on the accounts receivable balance. For certain types of service contracts, the Company has an unconditional right to consideration under the service contract and an accounts receivable balance is recorded for services completed. When consideration is received, or such consideration is unconditionally due, from a customer prior to transferring goods or services to the customer under the terms of a contract, a contract liability is recorded. Contract liabilities are recognized as revenue after control of the products or services is transferred to the customer and all revenue recognition criteria have been met. Costs to Obtain and Fulfill a Contract The Company currently expenses contract costs for processing and administrative fees for debit card transactions. The Company also expenses custody fees and transactional costs associated with securities transactions as well as third party tax preparation fees. The Company has elected the practical expedient in ASC 340-40-25-4, whereby the Company recognizes the incremental costs of obtaining contracts as an expense when incurred if the amortization period of the assets the Company otherwise would have recognized is one year or less.

LEASES

LEASES	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
LEASES	LEASES A lease is defined as a contract, or part of a contract, that conveys the right to control the use of identified property, plant or equipment for a period of time in exchange for consideration. On January 1, 2019, the Company adopted ASU No. 2016-02 “Leases” and all subsequent ASUs modifying ASC 842. For the Company, ASC 842 primarily affects the accounting treatment for operating lease agreements where the Company is the lessee. Lessee Accounting Substantially all of the leases pursuant to which the Company is the lessee are comprised of real estate property for branches, ATM locations, and office space with terms extending through 2040. All leases are classified as operating leases, and therefore, were previously not recognized on the Company’s consolidated balance sheets. With the adoption of ASC 842, operating lease agreements are required to be recognized on the consolidated balance sheets as a right-of-use (“ROU”) asset with a corresponding lease liability using the modified retrospective approach. The total of ROU assets and lease liabilities were $9.0 million as of January 1, 2019. The Company has elected the following practical expedients in conjunction with implementation of ASC 842 as follows: • Package of practical expedients: ◦ Lease classification as an operating lease under the prior standards is grandfathered. ◦ Re-evaluation of embedded leases evaluated under the prior standards is not required. ◦ No re-assessment of previously recorded initial direct lease costs. • Election to exclude short-term leases (i.e., leases with initial terms of twelve months or less), from capitalization on the consolidated balance sheets. The following table presents the consolidated statements of condition classification of the Company’s ROU assets and lease liabilities as of December 31, 2019 : (in thousands) December 31, 2019 Lease Right-of-Use Assets Classification Operating lease right-of-use assets Other assets $ 9,623 Lease Liabilities Operating lease liabilities Other liabilities 9,651 The calculated amount of the ROU assets and lease liabilities in the table above are impacted by the length of the lease term and the discount rate used for the present value of the minimum lease payments. The Company’s lease agreements often include one or more options to renew at the Company’s discretion. If at lease inception, the Company considers the exercising of a renewal option to be reasonably certain, the Company will include the extended term in the calculation of the ROU asset and lease liability. Regarding the discount rate, ASC 842 requires the use of the rate implicit in the lease whenever this rate is readily determinable. As this rate is rarely determinable, the Company utilizes its incremental borrowing rate at lease inception, on a collateralized basis, over a similar term. For operating leases existing prior to January 1, 2019, the rate for the original lease term as of January 1, 2019 was used. December 31, 2019 Weighted-average remaining lease term Operating leases 8.96 Weighted-average discount rate Operating leases 3.27 % The following table represents lease costs and other lease information. As the Company elected, for all classes of underlying assets, not to separate lease and non-lease components and instead to account for them as a single lease component, the variable lease cost primarily represents variable payments such as real estate taxes, common area maintenance and utilities. (in thousands) Twelve Months Ended December 31, 2019 Lease Costs Operating lease cost $ 698 Variable lease cost 711 Total lease cost $ 1,409 Future minimum payments for operating leases with initial or remaining terms of one year or more as of December 31, 2019 are, as follows: (in thousands) Operating Leases Twelve Months Ended: December 31, 2020 $ 1,194 December 31, 2021 1,199 December 31, 2022 1,222 December 31, 2023 1,219 December 31, 2024 1,190 Thereafter 5,984 Total future minimum lease payments 12,008 Amounts representing interest (2,357 ) Present value of net future minimum lease payments $ 9,651

CONDENSED FINANCIAL STATEMENTS

CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY	12 Months Ended
	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY	CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY The condensed balance sheets of Bar Harbor Bankshares as of December 31, 2019 and 2018 , and the condensed statements of income and cash flows for the years ended December 31, 2019, 2018 and 2017 are presented below: CONDENSED BALANCE SHEETS December 31, (in thousands) 2019 2018 Assets Cash due from Bar Harbor Bank and Trust $ 29,223 $ 9,993 Investment in subsidiaries 427,536 398,821 Premises and equipment 687 687 Other assets 4,586 3,416 Total assets $ 462,032 $ 412,917 Liabilities and Shareholders Equity Subordinated notes $ 59,920 $ 37,973 Accrued expenses 5,705 4,365 Shareholders equity 396,407 370,579 Total Liabilities and shareholders equity $ 462,032 $ 412,917 CONDENSED STATEMENTS OF INCOME Years Ended December 31, (in thousands) 2019 2018 2017 Income: Dividends from subsidiaries $ 21,734 $ 23,705 $ 13,907 Other 337 31 25 Total income 22,071 23,736 13,932 Interest expense 2,188 2,121 1,857 Non-interest expense 3,208 3,147 2,979 Total expense 5,396 5,268 4,836 Income before taxes and equity in undistributed income of subsidiaries 16,675 18,468 9,096 Income tax benefit (1,100 ) (1,136 ) (1,210 ) Income before equity in undistributed income of subsidiaries 17,775 19,604 10,306 Equity in undistributed income of subsidiaries 4,845 13,333 15,687 Net income $ 22,620 $ 32,937 $ 25,993 CONDENSED STATEMENTS OF CASH FLOWS Years Ended December 31, (in thousands) 2019 2018 2017 Cash flows from operating activities: Net income $ 22,620 $ 32,937 $ 25,993 Adjustments to reconcile net income to net cash (used) provided by operating activities: Equity in undistributed income of subsidiaries (4,845 ) (13,333 ) (15,687 ) Other, net (1,040 ) (1,457 ) (1,364 ) Net cash provided by operating activities 16,735 18,147 8,942 Cash flows from investing activities: Acquisitions, net of cash paid — — 1,939 Purchase of securities — (7 ) — Other, net (8,000 ) — — Net cash (used in) provided by investing activities (8,000 ) (7 ) 1,939 Cash flows from financing activities: Proceeds from issuance of subordinated debt 40,000 — — Repayment of subordinated debt (17,000 ) — — Net proceeds from common stock 883 951 1,052 Net proceeds from reissuance of treasury stock (22 ) 686 686 Common stock cash dividends paid (13,366 ) (12,184 ) (11,505 ) Other, net — — (16 ) Net cash provided by (used in) financing activities 10,495 (10,547 ) (9,783 ) Net change in cash and cash equivalents 19,230 7,593 1,098 Cash and cash equivalents at beginning of year 9,993 2,400 1,302 Cash and cash equivalents at end of year $ 29,223 $ 9,993 $ 2,400

QUARTERLY DATA (UNAUDITED)

QUARTERLY DATA (UNAUDITED)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
QUARTERLY DATA (UNAUDITED)	QUARTERLY DATA (UNAUDITED) Quarterly results of operations were as follows during 2019 and 2018 : 2019 (in thousands, except per share data) Fourth Quarter Third Quarter Second Quarter First Quarter Interest and dividend income $ 34,117 $ 34,262 $ 33,785 $ 33,227 Interest expense 10,013 11,817 12,289 11,462 Net interest income 24,104 22,445 21,496 21,765 Non-interest income 7,806 7,643 7,453 6,167 Provision for loan losses 538 893 562 324 Non-interest expense 26,803 23,400 20,906 18,624 Income before income taxes 4,569 5,795 7,481 8,984 Income tax expense 362 780 1,364 1,703 Net income $ 4,207 $ 5,015 $ 6,117 $ 7,281 Earnings per share: Basic $ 0.27 $ 0.32 $ 0.39 $ 0.47 Diluted $ 0.27 $ 0.32 $ 0.39 $ 0.47 Weighted average shares outstanding: Basic 15,554 15,547 15,538 15,523 Diluted 15,602 15,581 15,586 15,587 2018 (in thousands, except per share data) Fourth Quarter Third Quarter Second Quarter First Quarter Interest and dividend income $ 32,772 $ 32,184 $ 31,718 $ 30,777 Interest expense 10,508 9,715 8,726 7,619 Net interest income 22,264 22,469 22,992 23,158 Non-interest income 7,450 7,126 7,121 6,238 Provision for loan losses 572 643 770 795 Non-interest expense 20,096 17,906 18,685 18,852 Income before income taxes 9,046 11,046 10,658 9,749 Income tax expense 1,426 2,076 2,123 1,937 Net income $ 7,620 $ 8,970 $ 8,535 $ 7,812 Earnings per share: Basic $ 0.49 $ 0.58 $ 0.55 $ 0.51 Diluted $ 0.49 $ 0.58 $ 0.55 $ 0.50 Weighted average shares outstanding: Basic 15,516 15,503 15,482 15,448 Diluted 15,574 15,580 15,571 15,553

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	12 Months Ended
	Dec. 31, 2019
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS There were no significant subsequent events between December 31, 2019 and through the date the financial statements are available to be issued.

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of presentation	Basis of presentation: The consolidated financial statements (the “financial statements”) of Bar Harbor Bankshares and its subsidiaries (the “Company” or “Bar Harbor”) have been prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”). Bar Harbor Bankshares is a Maine Financial Institution Holding Company for the purposes of the laws of the state of Maine, and as such, is subject to the jurisdiction of the Superintendent of the Maine Bureau of Financial Institutions. These financial statements include the accounts of the Company, its wholly-owned subsidiary Bar Harbor Bank & Trust (the "Bank") and the Bank’s consolidated subsidiaries. The results of operations of companies or assets acquired are included only from the dates of acquisition. All material wholly-owned and majority-owned subsidiaries are consolidated unless U.S. GAAP requires otherwise.
Consolidation	Consolidation: The accompanying consolidated financial statements have been prepared in accordance with U.S. GAAP. The consolidated financial statements include the accounts of Bar Harbor Bankshares and its wholly-owned subsidiaries, Bar Harbor Bank & Trust, Bar Harbor Trust Services, Charter Trust Company and Cottage Street Corporation. All significant inter-company balances and transactions have been eliminated in consolidation. Assets held in a fiduciary capacity are not assets of the Company, but assets of customers, and therefore, are not included in the consolidated balance sheets.
Reclassifications	Reclassifications: Whenever necessary, amounts in the prior years’ financial statements are reclassified to conform to current presentation. The reclassifications had no impact on net income in the Company’s consolidated income statement.
Stock Split	Stock Split: On February 21, 2017, the Company's Board of Directors declared a three-for-two stock split payable on March 21, 2017 as a large stock dividend.
Use of estimates	Use of estimates: In preparing financial statements in conformity with U.S. GAAP, management is required to make estimates and assumptions that affect the reported amount of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to change in the near term relate to the determination of the allowance for loan losses, other-than-temporary impairment on securities, income tax estimates, reviews of goodwill for impairment, and accounting for post-retirement plans.
Cash and Cash Equivalents	Cash and Cash Equivalents: For purposes of reporting cash flows, cash and cash equivalents include cash on hand and amounts due from banks, Federal Funds sold, and other short-term investments with maturities less than 90 days. The Federal Reserve Bank requires the Bank to maintain certain reserve requirements of vault cash and/or deposits.
Securities and Other-Than-Temporary Impairments on Securities	Securities: All securities held at December 31, 2019 and 2018 were classified as available-for-sale (“AFS”). Available for sale securities primarily consist of mortgage-backed securities and obligations of state and political subdivisions there of, and are carried at estimated fair value. Changes in estimated fair value of AFS securities, net of applicable income taxes, are reported in accumulated other comprehensive income (loss) as a separate component of shareholders’ equity unless deemed to be other-than-temporarily impaired (“OTTI”) as discussed below. The Company does not have any securities classified as trading or held-to-maturity. Premiums and discounts on securities are amortized and accreted over the term of the securities using the interest method. Gains and losses on the sale of securities are recognized at the trade date using the specific-identification method and are shown separately in the Consolidated Statements of Income. Other-Than-Temporary Impairments on Securities: The Company conducts an OTTI analysis of investment securities on a quarterly basis or more often if a potential loss-triggering event occurs. A write-down of a debt security is recorded when fair value is below amortized cost in circumstances where: (1) the Company has the intent to sell a security; (2) it is more likely than not that the Company will be required to sell the security before recovery of its amortized cost basis; or (3) the Company does not expect to recover the entire amortized cost basis of the security. If the Company intends to sell a security or if it is more likely than not that the Company will be required to sell the security before recovery, an OTTI write-down is recognized in earnings equal to the entire difference between the security’s amortized cost basis and its fair value. If the Company does not intend to sell the security or it is not more likely than not that it will be required to sell the security before recovery, the OTTI write-down is separated into an amount representing credit loss, which is recognized in earnings, and an amount related to all other factors, which is recognized in other comprehensive income. To determine the amount related to credit loss on a debt security, the Company applies a methodology similar to that used for evaluating the impairment of loans.
Federal Home Loan Bank Stock	Federal Home Loan Bank Stock: The Bank is a member of the Federal Home Loan Bank of Boston (“FHLB”). The Bank uses the FHLB for most of its wholesale funding needs. As a requirement of membership in the FHLB, the Bank must own a minimum required amount of FHLB stock, calculated periodically based primarily on its level of borrowings from the FHLB. FHLB stock is a non-marketable equity security and therefore is reported at cost, which generally equals par value. Shares held in excess of the minimum required amount are generally redeemable at par value. The Company periodically evaluates its investment in FHLB stock for impairment based on, among other things, the capital adequacy of the FHLB and its overall financial condition. Based on the capital adequacy, liquidity position and sustained profitability of the FHLB, management believes there is no impairment related to the carrying amount of the Bank’s FHLB stock as of December 31, 2019 .
Loans Held for Sale	Loans Held for Sale: Loans originated with the intent to be sold in the secondary market are accounted for at the lower of cost or market (fair value). Fair value is primarily determined based on quoted prices for similar loans in active markets. Gains and losses on sales of residential mortgage loans (sales proceeds minus carrying value) are recorded in non-interest income. Non-refundable fees and direct loan origination costs related to residential mortgage loans held for sale are recognized in non-interest income or non-interest expense as earned or incurred.
Loans	Loans: Loans are reported at their outstanding unpaid principal balances adjusted for charge-offs, the allowance for loan losses, the unamortized balance of any deferred fees or costs on originated loans and the unamortized balance of any premiums or discounts on loans purchased or acquired through mergers. Interest on loans is accrued and credited to income based on the principal amount of loans outstanding. Loan origination and commitment fees and direct loan origination costs are deferred, and the net amount is amortized as an adjustment of the related loans’ yield, using the level-yield method over the estimated lives of the related loans. Acquired Loans: Loans acquired in acquisitions are initially recorded at fair value with no carryover of the related allowance for credit losses. Determining the fair value of the loans involves estimating the amount and timing of principal and interest cash flows initially expected to be collected on the loans and discounting those cash flows at an appropriate market rate of interest. For loans that meet the criteria stipulated in ASC 310-30, “Loans and Debt Securities Acquired with Deteriorated Credit Quality,” the Company recognizes the accretable yield, which is defined as the excess of all cash flows expected at acquisition over the initial fair value of the loan, as interest income on a level-yield basis over the expected remaining life of the loan. The excess of the loan’s contractually required payments over the cash flows expected to be collected is the non-accretable difference. The non-accretable difference is not recognized as an adjustment of yield, a loss accrual, or a valuation allowance. The Company evaluates quarterly whether the timing and cash to be collected are reasonably expected. Subsequent significant increases in cash flows the Company expects to collect will first reduce any previously recognized valuation allowance and then be reflected prospectively as an increase to the level yield. Subsequent decreases in expected cash flows may result in the loan being considered impaired. Interest income is not recognized to the extent that the net investment in the loan would increase to an amount greater than the estimated payoff amount. For loans that do not meet the ASC 310-30 criteria, the Company accretes interest income based on the contractually required cash flows. The Company subjects loans that do not meet the ASC 310-30 criteria to ASC 450, “Contingencies” by collectively evaluating these loans for an allowance for loan loss. Acquired loans that met the criteria for non-accrual of interest prior to the acquisition are considered performing upon acquisition, regardless of whether the customer is contractually delinquent, if the Company can reasonably estimate the timing and amount of the expected cash flows on such loans and if the Company expects to fully collect the new carrying value of the loans. As such, the Company may no longer consider the loan to be non-accrual or nonperforming and may accrue interest on these loans, including the impact of any accretable yield.
Non-performing loans	Non-performing loans: Residential real estate and home equity loans are generally placed on non-accrual status when reaching 90 days past due, or in process of foreclosure, or sooner if considered appropriate by management. Consumer loans are generally placed on non-accrual when reaching 90 days or more past due, or sooner if considered appropriate by management. Secured consumer loans are written down to net realizable value and unsecured consumer loans are charged-off upon reaching 120 days past due. Commercial real estate loans and commercial business loans that are 90 days or more past due are generally placed on non-accrual status, unless secured by sufficient cash or other assets immediately convertible to cash, and the loan is in the process of collection. Commercial real estate and commercial business loans may be placed on non-accrual status prior to the 90 days delinquency date if considered appropriate by management. When a loan has been placed on non-accrual status, previously accrued and uncollected interest is reversed against interest on the loan. The interest on non-accrual loans is accounted for using the cash-basis or cost-recovery method depending on corresponding credit risk, until qualifying for return to accrual status. A loan can be returned to accrual status when collectability of principal is reasonably assured and the loan has performed for a period of time, generally six months.
Impaired loans	Impaired loans: A loan is considered impaired when, based on current information and events, it is probable that the Company will not be able to collect all amounts due from the borrower in accordance with the contractual terms of the loan, including scheduled interest payments. Factors considered by management in determining impairment include payment status and collateral value. In considering loans for evaluation of impairment, management generally excludes smaller balance, homogeneous loans; residential mortgage loans, home equity loans, and all consumer loans, unless such loans were restructured in a troubled debt restructuring. These loans are collectively evaluated for risk of loss. When a loan has been identified as being impaired, the amount of impairment is measured based on the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s observable market price, or the estimated fair value of the collateral, less any selling costs, if the loan is collateral-dependent. If the measurement of the impaired loan is less than the recorded investment in the loan (including accrued interest, net of deferred loan fees or costs, and unamortized premiums or discounts), impairment is recognized by establishing or adjusting an existing allocation of the allowance for loan losses, or by recording a partial charge-off of the loan to its fair value. Interest payments made on impaired loans are typically applied to principal unless collectability of the principal amount is reasonably assured, in which case, interest income may be accrued or recognized on a cash basis.
Loans Modified in a Troubled Debt Restructuring	Loans Modified in a Troubled Debt Restructuring: Loans are considered to have been modified in a troubled debt restructuring when, due to a borrower’s financial difficulties, the Company makes certain concessions to the borrower that it would not otherwise consider. Modifications may include interest rate reductions, principal or interest forgiveness, forbearance, and other actions intended to minimize economic loss and to avoid foreclosure or repossession of collateral. Generally, a non-accrual loan that has been modified in a troubled debt restructuring remains on non-accrual status for a period of at least 6 months to demonstrate that the borrower is able to meet the terms of the modified loan. However, performance prior to the modification, or significant events that coincide with the modification, are included in assessing whether the borrower can meet the new terms and may result in the loan being returned to accrual status at the time of loan modification or after a shorter performance period. If the borrower’s ability to meet the revised payment schedule is uncertain, the loan remains on non-accrual status.
Allowance for Loan Losses	Allowance for Loan Losses: The allowance for loan losses (the “allowance”) is a significant accounting estimate used in the preparation of the Company’s consolidated financial statements. The allowance is available to absorb losses inherent in the current loan portfolio and is maintained at a level that, in management’s judgment, is appropriate for the amount of risk inherent in the loan portfolio, given past and present conditions. The allowance is increased by provisions charged to operating expense and by recoveries on loans previously charged off, and is decreased by loans charged off as uncollectible. The allowance is calculated in accordance with ASC 310 - Receivables and ASC 450 - Contingencies. Under the guidance of ASC 310, specific allowances are established in cases where management has identified significant conditions or circumstances related to individual loans where the probability of a loss may be incurred. Credit loss estimates for loans without specific allowances are determined under the guidance of ASC 450, which includes portfolio segmentation based on similar risk characteristics, determination of estimated historical loss rates, calculation of a time-based loss emergence and confirmation periods, and adjustments for certain qualitative risk factors. Arriving at an appropriate level of allowance for loan losses involves a high degree of judgment. The determination of the adequacy of the allowance and provisioning for estimated losses is evaluated regularly based on review of loans, with particular emphasis on non-performing and other loans that management believes warrant special consideration. While management uses available information to recognize losses on loans, changing economic conditions and the economic prospects of the borrowers may necessitate future additions or reductions to the allowance. In addition, various regulatory agencies, as an integral part of their examination process, periodically review the Bank’s allowance, which also may necessitate future additions or reductions to the allowance, based on information available to them at the time of their examination. Refer to Note 4 - Allowance for Loan Losses , for further information, including the Company’s loan loss estimation methodology.
Reserve for Unfunded Commitments	Reserve for Unfunded Commitments: The unfunded reserve is a component of other liabilities and represents the estimate for probable credit losses inherent in unfunded commitments to extend credit. Unfunded commitments to extend credit include banker’s acceptances, and standby and commercial letters of credit. The process used to determine the unfunded reserve is consistent with the process for determining the allowance, as adjusted for estimated funding probabilities or loan and lease equivalency factors. The level of the unfunded reserve is adjusted by recording on an expense or recovery in other noninterest expense. Reserve for unfunded commitments are classified in other liabilities on the Company’s Consolidated Balance Sheet.
Premises and Equipment	Premises and Equipment: Premises and equipment and related improvements are stated at cost less accumulated depreciation. Depreciation is computed on the straight-line method over the lesser of the lease term or estimated useful lives of related assets; generally 25 to 39 years for premises and three to seven years for furniture and equipment. Software costs are stated at cost less accumulated depreciation within other assets on the Consolidated Statements of Condition. Amortization expense is calculated using the straight-line method over the estimated useful lives of the related assets.
Other Real Estate Owned	Other Real Estate Owned: Other real estate owned consists of properties acquired through foreclosure proceedings or acceptance of a deed-in-lieu of foreclosure. These properties are recorded at fair value less estimated costs to sell the property. Initially at transfer if the recorded investment in the loan exceeds the property’s fair value at the time of acquisition, a charge-off is recorded against the allowance. If the fair value of the property initially at transfer exceeds the carrying amount of the loan, the excess is recorded either as a recovery to the allowance if a charge-off had previously been recorded, or as a gain on initial transfer in other non-interest income. Subsequent decreases in the property’s fair value and operating expenses of the property are recognized through charges to other non-interest expense. The fair value of the property acquired and ongoing valuation is based on third-party appraisals, broker price opinions, recent sales activity, or a combination thereof, subject to management judgment. Due to changing market conditions the amount ultimately realized on the other real estate owned may differ from the amounts reflected in the financial statements.
Goodwill and Other Intangible Assets	Goodwill: In connection with acquisitions, the Company generally records as assets on its consolidated financial statements both goodwill and other intangible assets, such as core deposit intangibles. Goodwill represents the excess of the purchase price over the fair value of net assets acquired in accordance with the purchase method of accounting for business combinations. Goodwill is not amortized but, instead, is subject to impairment tests on at least an annual basis, or more frequently, if an event occurs or circumstances change that reduce the fair value of a reporting unit below its carrying amount. The impairment testing process is conducted by assigning assets and goodwill to each reporting unit. Currently, the Company’s goodwill is evaluated at the entity level as there is only one reporting unit. The Company, at our discretion, assesses certain qualitative factors to determine if it is more likely than not that the fair value of the reporting unit is less than its carrying value. If it is more likely than not that the fair value of the reporting unit is less than the carrying value, then the fair value of each reporting unit is compared to the recorded book value “step one.” If the fair value of the reporting unit exceeds its carrying value, goodwill is not considered impaired and “step two” is not considered necessary. If the carrying value of a reporting unit exceeds its fair value, the impairment test continues (“step two”) by comparing the carrying value of the reporting unit’s goodwill to the implied fair value of goodwill. The implied fair value is computed by adjusting all assets and liabilities of the reporting unit to current fair value with the offset adjustment to goodwill. The adjusted goodwill balance is the implied fair value of the goodwill. An impairment charge is recognized if the carrying fair value of goodwill exceeds the implied fair value of goodwill. Other Intangible Assets: Intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset or liability. The fair value of these assets are generally determined based on appraisals and are subsequently amortized on a straight-line basis or an accelerated basis over their estimated lives. Management assesses the recoverability of these intangible assets whenever events or changes in circumstances indicate that their carrying value may not be recoverable. If the carrying amount exceeds fair value, an impairment charge is recorded to income.
Bank-Owned Life Insurance	Bank-Owned Life Insurance: Bank-owned life insurance (“BOLI”) represents life insurance on the lives of certain current and retired employees who had provided positive consent allowing the Bank to be the beneficiary of such policies. Increases in the cash value of the policies, as well as insurance proceeds received in excess of the cash value, are recorded in other non-interest income, and are not subject to income taxes. The cash surrender value is included in other assets on the Company’s consolidated balance sheet.
Capitalized Servicing Rights	Capitalized Servicing Right s : Capitalized servicing rights are recognized as assets when mortgage loans are sold and the rights to service those loans are retained. The Company’s capitalized servicing rights are accounted for under the amortization method and are initially recorded at fair value. Fair values are established by using a discounted cash flow model to calculate the present value of estimated future net servicing income. Changes in the fair value of capitalized servicing rights are primarily due to changes in valuation inputs, assumptions, and the collection and realization of expected cash flows. However, these capitalized servicing rights are amortized in proportion to and over the period of estimated net servicing income, which includes prepayment assumptions. An impairment analysis is prepared on a quarterly basis by estimating the fair value of the capitalized servicing rights and comparing that value to the carrying amount. A valuation allowance is established when the carrying amount of these capitalized servicing rights exceeds fair value.
Senior and Subordinated Borrowings	Senior and Subordinated Borrowings: The Company's borrowings include retail and wholesale repurchase agreements, FHLB overnight and short-term borrowings, Federal Funds purchased, line of credit advances and subordinated notes. The Company is required to post collateral for certain borrowings, for which it, generally, posts loans and/or investment securities as collateral.
Derivative Financial Instruments	Derivative Financial Instruments: The Company recognizes all derivative instruments on the consolidated balance sheet at fair value. On the date the derivative instrument is entered into, the Company designates whether the derivative is part of a hedging relationship (i.e., cash flow or fair value hedge). The Company formally documents relationships between hedging instruments and hedged items, as well as its risk management objective and strategy for undertaking hedge transactions. The Company also assesses, both at the hedge’s inception and on an ongoing basis, whether the derivatives used in hedging transactions are highly effective in offsetting the changes in cash flows or fair values of hedged items. Changes in the fair value of derivative instruments that are highly effective and qualify as cash flow hedge are recorded in other comprehensive income/(loss). Any ineffective portion is recorded in earnings. For fair value hedges that are highly effective, the gain or loss on the derivative and the loss or gain on the hedged item attributable to the hedged risk are both recognized in earnings, with the differences (if any) representing hedge ineffectiveness. The Company discontinues hedge accounting when it is determined that the derivative is no longer highly effective in offsetting changes of the hedged risk on the hedged item, or management determines that the designation of the derivative as a hedging instrument is no longer appropriate. The Company enters into commitments to lend with borrowers, and forward commitments to sell loans or to-be-announced mortgage-backed bonds to investors to hedge against inherent interest rate and pricing risk associated with selling loans. The commitments to lend generally terminate once the loan is funded, the lock period expires or the borrower decides not to contract for the loan. The forward commitments generally terminate once the loan is sold, the commitment period expires or the borrower decides not to contract for the loan. These commitments are considered derivatives which are accounted for by recognizing their estimated fair value on the Consolidated Balance Sheets as either a freestanding asset or liability.
Off-Balance Sheet Financial Instruments	Off-Balance Sheet Financial Instruments: In the ordinary course of business, the Company has entered into off-balance sheet financial instruments consisting of commitments to extend credit, unused or unadvanced loan funds and letters of credit. Such financial instruments are recorded in the consolidated financial statements when they are funded or related fees are incurred or received.
Stock Based Compensation	Stock Based Compensation: The Company has equity award plans that include stock option, restricted stock and performance stock, which are described more fully in Note 14 - Stock Based Compensation Plans o f the Consolidated Financial Statements. The Company expenses the grant date fair value of equity awards granted. The expense is recognized over the vesting periods of the grants. The Company uses its treasury shares for issuing shares upon option exercises, restricted stock and performance stock vesting.
Employee Benefit Plans	Employee Benefit Plans: The Company has non-qualified supplemental executive retirement agreements with certain retired officers. The agreements provide supplemental retirement benefits payable in installments over a period of years upon retirement or death. The Company recognized the net present value of payments associated with the agreements over the service periods of the participating officers. Interest costs continue to be recognized on the benefit obligations. The Company also has a supplemental executive retirement agreement with a certain current executive officer. This agreement provides a stream of future payments in accordance with individually defined vesting schedules upon retirement, termination, or in the event that the participating executive leaves the Company following a change of control event. The Company recognizes the net present value of payments associated with these agreements over the service periods of the participating executive officers. Upon retirement, interest costs will continue to be recognized on the benefit obligation. The Company recognizes the over-funded or under-funded status of post-retirement benefit plans as a liability or asset on the balance sheet in other liabilities or other assets and recognizes changes in that funded status through other comprehensive income/(loss). Gains and losses, prior service costs and credits, and any remaining transition amounts that have not yet been recognized through net periodic benefit costs are recognized in accumulated other comprehensive income/(loss), net of tax effects, until they are amortized as a component of net periodic cost. The measurement date, which is the date at which the benefit obligation and plan assets are measured, is the Company's fiscal year end.
Income Taxes	Income Taxes: The Company uses the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. If current available information indicates that it is more likely than not that deferred tax assets will not be realized, a valuation allowance is established. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.
Treasury Stock	Treasury Stock: Shares of the Company’s common stock that are repurchased are recorded in treasury stock at cost. On the date of subsequent re-issuance, the treasury stock account is reduced by the cost of such stock on an average cost basis.
Earnings Per Share	Earnings Per Share: Basic earnings per share excludes dilution and is computed by dividing income available to common shareholders by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflect the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the Company, such as the Company’s dilutive stock options.
Revenue Recognition	Revenue Recognition: The Company recognizes revenue in accordance with ASC 606, "Revenue from Contracts with Customers." ASC 606 requires the Company to follow a five step process: (1) identify the contract(s) with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the Company satisfies a performance obligation. Revenue recognition under ASC 606 depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for the goods or service. See Note 16 - Revenue from Contracts with Customers of the Company's Consolidated Financial Statements for additional information on revenue recognition.
Marketing Costs	Marketing Costs: Marketing costs are expensed as incurred.
Segment Reporting	Segment Reporting: An operating segment is defined as a component of a business for which separate financial information is available that is evaluated regularly by the chief operating decision-maker in deciding how to allocate resources and evaluate performance. The Company has determined that its operations are solely in the community banking industry and include traditional community banking services, including lending activities, acceptance of demand, savings and time deposits, business services, investment management, trust and third-party brokerage services. These products and services have similar distribution methods, types of customers and regulatory responsibilities. Accordingly, segment information is not presented in the Consolidated Financial Statements.
Recent Accounting Pronouncements	Recent Accounting Pronouncements The following table provides a brief description of accounting standards that could have a material impact to the Company’s consolidated financial statements upon adoption: Standard Description Required Date of Adoption Effect on financial statements Standards Adopted in 2019 ASU 2016-02, Leases This ASU creates ASU Topic 842, Leases, and supersedes Topic 840, Leases. The new guidance requires lessees to record a right-of-use asset and a corresponding liability equal to the present value of future rental payments on their balance sheets for all leases with a term greater than one year. There are not significant changes to lessor accounting; however, there are certain improvements made to align lessor accounting with the lessee accounting model and Topic 606, Revenue from Contracts with Customers. This guidance expands both quantitative and qualitative required disclosures. This ASU is required to be adopted on a modified retrospective basis and allows for practical expedients and elections in conjunction with implementation. The Company may elect some of the expedients upon the adoption date, which may be applied prospectively or retrospectively. January 1, 2019 The Company adopted this ASU as of January 1, 2019 including the election of the practical expedients, allowing for existing leases to be accounted for consistent with current guidance, with the exception of balance sheet recognition for lessees. A modified retrospective transition approach was utilized, applying the new standard to all leases existing at the date of initial application. At January 1, 2019 the Company recognized a right-of-use asset and corresponding lease liability of $9.0 million. This computation is based, primarily, on the present value of unpaid future minimum lease payments. Additionally, that amount is impacted by assumptions around renewals and/or extensions, and the interest rate used to discount those future lease obligations. Due to the limited size of the Company's leasing portfolio, many other items related to this standard don't apply, or had an immaterial impact on the Company's consolidated financial statements. For transitional disclosures see Note 17 - Leases . ASU 2018-11 Practical Expedients to Topic 842, Leases ASU 2018-20 Scope Improvements for Lessors ASU 2019-01 Leases: Codification Improvements ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities This ASU amends Accounting Standards Codification ("ASC") 815, Derivatives and Hedging to (1) improve the transparency and understandability of information conveyed to financial statement users about an entity's risk management activities by better aligning the entity's financial reporting for hedging relationships with those risk management activities and (2) reduce the complexity of and simplify the application of hedge accounting by preparers. January 1, 2019 The Company adopted this ASU as of January 1, 2019, although it did not have a material impact on the Company's consolidated financial statements, disclosures were updated to comply with the guidance. For further detail see Note 13 - Derivative Financial Instruments and Hedging Activities. ASU 2018-16, Inclusion of Overnight Financing Rate or Overnight Swap Rate as a Benchmark for Hedge Accounting ASU 2018-07, Share Based Payment Accounting This ASU expands the scope of Topic 718, Compensation- Stock Compensation to include share-based payments issued to non-employees for goods or services. Consequently, the accounting for share-based payments to non-employees and employees will be substantially aligned. The ASU supersedes Subtopic 505-50, Equity-Based Payments to non-employees. January 1, 2019 The Company adopted this ASU as of January 1, 2019, with no material impact on the Company's consolidated financial statements. Standard Description Required Date of Adoption Effect on financial statements Standards Not Yet Adopted ASU 2016-13, Measurement of Credit Losses on Financial Instruments This ASU amends Topic 326, Financial Instruments- Credit Losses to replace the current incurred loss accounting model with a current expected credit loss approach (CECL) for financial instruments measured at amortized cost and other commitments to extend credit. The amendments require entities to consider all available relevant information when estimating current expected credit losses, including details about past events, current conditions, and reasonable and supportable forecasts. The resulting allowance for credit losses is to reflect the portion of the amortized cost basis that the entity does not expect to collect. The amendments also eliminate the current accounting model for purchased credit impaired loans and debt securities. Additional quantitative and qualitative disclosures are required upon adoption. January 1, 2020 Adoption of this ASU is expected to primarily change how the Company estimates credit losses with the application of the expected credit loss model. Entities will apply the standard's provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (i.e., modified retrospective approach). The Company will utilize the modified retrospective approach. The Company's CECL implementation efforts are in process and continue to focus on model validation, developing new disclosures, establishing formal policies and procedures and other governance and control documentation. Certain elements of the calculation are pending finalization, including refinement of the model assumptions, the qualitative framework, internal control design, model validation, and the operational control framework to support the new process. Furthermore, changes to the economic forecasts within the model could positively or negatively impact the actual results. The quantitative impact to the consolidated financial statements is estimated to be between $4 to $6 million. ASU 2018-19, Codification Improvements to ASU 2016-13 While the CECL model does not apply to available for sale debt securities, the ASU does require entities to record an allowance when recognizing credit losses for available for sale securities, rather than reduce the amortized cost of the securities by direct write-offs. The ASU should be adopted on a modified retrospective basis. Entities that have loans accounted for under ASC 310-30 at the time of adoption should prospectively apply the guidance in this amendment for purchase credit deteriorated assets. Early adoption is permitted in 2019 ASU 2017-04, Simplifying the Test for Goodwill Impairment This ASU amends Topic 350, Intangibles-Goodwill and Other, and eliminates Step 2 from the goodwill impairment test. January 1, 2020 Adoption of this ASU is not expected to have a material impact on the Company's consolidated financial statements. Early adoption is permitted. ASU 2018-13 Changes to Disclosure Requirements Fair Value Measurement, Topic 820 This ASU eliminates, adds and modifies certain disclosure requirements for fair value measurements. Among the changes, entities will no longer be required to disclose the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, but will be required to disclose the range and weighted average used to develop significant unobservable inputs for Level 3 fair value measurements. January 1, 2020 Adoption of this ASU is not expected to have a material impact on the Company's consolidated financial statements. Early adoption is permitted. ASU 2018-14 Compensation- Disclosure Requirements for Defined Pension Plans Topic 715-20 This ASU makes minor changes to the disclosure requirements for employers that sponsor defined benefit pension and/or other post-retirement benefit plans. January 1, 2021 Adoption of this ASU is not expected to have a material impact on the Company's consolidated financial statements. Early adoption is permitted.

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	The following table provides a brief description of accounting standards that could have a material impact to the Company’s consolidated financial statements upon adoption: Standard Description Required Date of Adoption Effect on financial statements Standards Adopted in 2019 ASU 2016-02, Leases This ASU creates ASU Topic 842, Leases, and supersedes Topic 840, Leases. The new guidance requires lessees to record a right-of-use asset and a corresponding liability equal to the present value of future rental payments on their balance sheets for all leases with a term greater than one year. There are not significant changes to lessor accounting; however, there are certain improvements made to align lessor accounting with the lessee accounting model and Topic 606, Revenue from Contracts with Customers. This guidance expands both quantitative and qualitative required disclosures. This ASU is required to be adopted on a modified retrospective basis and allows for practical expedients and elections in conjunction with implementation. The Company may elect some of the expedients upon the adoption date, which may be applied prospectively or retrospectively. January 1, 2019 The Company adopted this ASU as of January 1, 2019 including the election of the practical expedients, allowing for existing leases to be accounted for consistent with current guidance, with the exception of balance sheet recognition for lessees. A modified retrospective transition approach was utilized, applying the new standard to all leases existing at the date of initial application. At January 1, 2019 the Company recognized a right-of-use asset and corresponding lease liability of $9.0 million. This computation is based, primarily, on the present value of unpaid future minimum lease payments. Additionally, that amount is impacted by assumptions around renewals and/or extensions, and the interest rate used to discount those future lease obligations. Due to the limited size of the Company's leasing portfolio, many other items related to this standard don't apply, or had an immaterial impact on the Company's consolidated financial statements. For transitional disclosures see Note 17 - Leases . ASU 2018-11 Practical Expedients to Topic 842, Leases ASU 2018-20 Scope Improvements for Lessors ASU 2019-01 Leases: Codification Improvements ASU 2017-12, Targeted Improvements to Accounting for Hedging Activities This ASU amends Accounting Standards Codification ("ASC") 815, Derivatives and Hedging to (1) improve the transparency and understandability of information conveyed to financial statement users about an entity's risk management activities by better aligning the entity's financial reporting for hedging relationships with those risk management activities and (2) reduce the complexity of and simplify the application of hedge accounting by preparers. January 1, 2019 The Company adopted this ASU as of January 1, 2019, although it did not have a material impact on the Company's consolidated financial statements, disclosures were updated to comply with the guidance. For further detail see Note 13 - Derivative Financial Instruments and Hedging Activities. ASU 2018-16, Inclusion of Overnight Financing Rate or Overnight Swap Rate as a Benchmark for Hedge Accounting ASU 2018-07, Share Based Payment Accounting This ASU expands the scope of Topic 718, Compensation- Stock Compensation to include share-based payments issued to non-employees for goods or services. Consequently, the accounting for share-based payments to non-employees and employees will be substantially aligned. The ASU supersedes Subtopic 505-50, Equity-Based Payments to non-employees. January 1, 2019 The Company adopted this ASU as of January 1, 2019, with no material impact on the Company's consolidated financial statements. Standard Description Required Date of Adoption Effect on financial statements Standards Not Yet Adopted ASU 2016-13, Measurement of Credit Losses on Financial Instruments This ASU amends Topic 326, Financial Instruments- Credit Losses to replace the current incurred loss accounting model with a current expected credit loss approach (CECL) for financial instruments measured at amortized cost and other commitments to extend credit. The amendments require entities to consider all available relevant information when estimating current expected credit losses, including details about past events, current conditions, and reasonable and supportable forecasts. The resulting allowance for credit losses is to reflect the portion of the amortized cost basis that the entity does not expect to collect. The amendments also eliminate the current accounting model for purchased credit impaired loans and debt securities. Additional quantitative and qualitative disclosures are required upon adoption. January 1, 2020 Adoption of this ASU is expected to primarily change how the Company estimates credit losses with the application of the expected credit loss model. Entities will apply the standard's provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (i.e., modified retrospective approach). The Company will utilize the modified retrospective approach. The Company's CECL implementation efforts are in process and continue to focus on model validation, developing new disclosures, establishing formal policies and procedures and other governance and control documentation. Certain elements of the calculation are pending finalization, including refinement of the model assumptions, the qualitative framework, internal control design, model validation, and the operational control framework to support the new process. Furthermore, changes to the economic forecasts within the model could positively or negatively impact the actual results. The quantitative impact to the consolidated financial statements is estimated to be between $4 to $6 million. ASU 2018-19, Codification Improvements to ASU 2016-13 While the CECL model does not apply to available for sale debt securities, the ASU does require entities to record an allowance when recognizing credit losses for available for sale securities, rather than reduce the amortized cost of the securities by direct write-offs. The ASU should be adopted on a modified retrospective basis. Entities that have loans accounted for under ASC 310-30 at the time of adoption should prospectively apply the guidance in this amendment for purchase credit deteriorated assets. Early adoption is permitted in 2019 ASU 2017-04, Simplifying the Test for Goodwill Impairment This ASU amends Topic 350, Intangibles-Goodwill and Other, and eliminates Step 2 from the goodwill impairment test. January 1, 2020 Adoption of this ASU is not expected to have a material impact on the Company's consolidated financial statements. Early adoption is permitted. ASU 2018-13 Changes to Disclosure Requirements Fair Value Measurement, Topic 820 This ASU eliminates, adds and modifies certain disclosure requirements for fair value measurements. Among the changes, entities will no longer be required to disclose the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, but will be required to disclose the range and weighted average used to develop significant unobservable inputs for Level 3 fair value measurements. January 1, 2020 Adoption of this ASU is not expected to have a material impact on the Company's consolidated financial statements. Early adoption is permitted. ASU 2018-14 Compensation- Disclosure Requirements for Defined Pension Plans Topic 715-20 This ASU makes minor changes to the disclosure requirements for employers that sponsor defined benefit pension and/or other post-retirement benefit plans. January 1, 2021 Adoption of this ASU is not expected to have a material impact on the Company's consolidated financial statements. Early adoption is permitted.

SECURITIES AVAILABLE FOR SALE (

SECURITIES AVAILABLE FOR SALE (Tables)	12 Months Ended
	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Summary of securities available for sale	A summary of securities pledged as collateral for certain deposits and borrowing arrangements as of the years ended December 31, 2019 and December 31, 2018 is as follows: December 31, 2019 December 31, 2018 (in thousands) Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value Securities pledged for deposits $ 217,009 $ 220,054 $ 128,949 $ 126,649 Securities pledged for repurchase agreements 96,007 96,477 55,656 54,189 Securities pledged for other borrowings (1) 157,172 157,458 270,252 265,334 Total securities pledged $ 470,188 $ 473,989 $ 454,857 $ 446,172 ______________________________ (1) The Bank pledged securities as collateral for certain borrowing arrangements with the Federal Home Loan Bank of Boston and Federal Reserve Bank of Boston The following is a summary of securities available for sale: (in thousands) Amortized Cost Unrealized Gains Unrealized Losses Fair Value December 31, 2019 Debt securities: Mortgage-backed securities: US Government-sponsored enterprises $ 319,064 $ 4,985 $ (2,080 ) $ 321,969 US Government agency 98,568 1,640 (547 ) 99,661 Private label 20,212 68 (747 ) 19,533 Obligations of states and political subdivisions thereof 139,240 3,034 (268 ) 142,006 Corporate bonds 78,804 1,478 (221 ) 80,061 Total securities available for sale $ 655,888 $ 11,205 $ (3,863 ) $ 663,230 December 31, 2018 Debt securities: Mortgage-backed securities: US Government-sponsored enterprises $ 413,492 $ 904 $ (9,444 ) $ 404,952 US Government agency 111,938 509 (1,935 ) 110,512 Private label 20,353 113 (84 ) 20,382 Obligations of states and political subdivisions thereof 133,260 1,081 (2,076 ) 132,265 Corporate bonds 58,098 264 (636 ) 57,726 Total securities available for sale $ 737,141 $ 2,871 $ (14,175 ) $ 725,837
Schedule of amortized cost and estimated fair value of available for sale (AFS), segregated by contractual maturity	The amortized cost and estimated fair value of available for sale (“AFS”) securities segregated by contractual maturity at December 31, 2019 are presented below. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Mortgage-backed securities are shown in total, as their maturities are highly variable. Available for sale (in thousands) Amortized Cost Fair Value Within 1 year $ — $ — Over 1 year to 5 years 33,179 34,004 Over 5 years to 10 years 57,285 58,138 Over 10 years 127,580 129,925 Total bonds and obligations 218,044 222,067 Mortgage-backed securities 437,844 441,163 Total securities available for sale $ 655,888 $ 663,230
Summary of proceeds from the sale of securities and realized gains and losses	The following table summarizes proceeds from the sale of AFS securities and realized gains and losses: (in thousands) Proceeds from Sale of Securities Available for Sale Realized Gains Realized Losses Net 2019 $ 92,315 $ 993 $ (756 ) $ 237 2018 29,107 — (924 ) (924 ) 2017 1,599 19 — 19
Schedule of securities with unrealized losses, segregated by the duration of their continuous unrealized loss positions	Securities with unrealized losses, segregated by the duration of their continuous unrealized loss positions, are summarized as follows: Less Than Twelve Months Over Twelve Months Total (in thousands) Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Fair December 31, 2019 Debt securities: Mortgage-backed securities: US Government-sponsored enterprises $ 1,074 $ 43,429 $ 1,006 $ 49,712 $ 2,080 $ 93,141 US Government agency 432 19,717 115 9,120 547 28,837 Private label 380 9,843 367 9,411 747 19,254 Obligations of states and political subdivisions thereof 137 29,355 131 1,682 268 31,037 Corporate bonds 142 9,888 79 12,276 221 22,164 Total securities available for sale $ 2,165 $ 112,232 $ 1,698 $ 82,201 $ 3,863 $ 194,433 December 31, 2018 Debt securities: Mortgage-backed securities: US Government-sponsored enterprises $ 155 $ 19,367 $ 9,289 $ 297,569 $ 9,444 $ 316,936 US Government agency 16 2,570 1,919 68,266 1,935 70,836 Private label 79 10,393 5 47 84 10,440 Obligations of states and political subdivisions thereof 43 6,784 2,033 47,930 2,076 54,714 Corporate bonds 224 11,759 412 14,460 636 26,219 Total securities available for sale $ 517 $ 50,873 $ 13,658 $ 428,272 $ 14,175 $ 479,145
Schedule of other than temporary impairment losses	The following table presents the remaining amount of historical credit losses on debt securities and changes reflected in the statement of income: Twelve Months Ended December 31, (in thousands) 2019 2018 2017 Estimated credit losses as of prior year-end, $ 1,697 $ 1,697 $ 1,697 Reductions for securities paid off during the period — — — Estimated credit losses at end of the period $ 1,697 $ 1,697 $ 1,697

LOANS (Tables)

LOANS (Tables)	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Schedule of Loans	The following is a summary of total loans: December 31, 2019 December 31, 2018 (in thousands) Business Activities Loans Acquired Loans Total Business Activities Loans Acquired Loans Total Commercial real estate: Construction and land development $ 31,387 $ 2,903 $ 34,290 $ 23,754 $ 2,890 $ 26,644 Other commercial real estate 666,051 230,320 896,371 555,980 244,075 800,055 Total commercial real estate 697,438 233,223 930,661 579,734 246,965 826,699 Commercial and industrial: Commercial 239,692 59,072 298,764 234,757 52,470 287,227 Agricultural 20,018 206 20,224 22,317 — 22,317 Tax exempt 66,860 37,443 104,303 56,588 38,738 95,326 Total commercial and industrial 326,570 96,721 423,291 313,662 91,208 404,870 Total commercial loans 1,024,008 329,944 1,353,952 893,396 338,173 1,231,569 Residential real estate: Residential mortgages 740,687 411,170 1,151,857 670,189 474,509 1,144,698 Total residential real estate 740,687 411,170 1,151,857 670,189 474,509 1,144,698 Consumer: Home equity 59,368 63,033 122,401 57,898 45,291 103,189 Other consumer 11,167 1,715 12,882 9,414 1,357 10,771 Total consumer 70,535 64,748 135,283 67,312 46,648 113,960 Total loans $ 1,835,230 $ 805,862 $ 2,641,092 $ 1,630,897 $ 859,330 $ 2,490,227 Total unamortized net costs and premiums included in the year-end total for business activity loans were as follows: (in thousands) December 31, 2019 December 31, 2018 Unamortized net loan origination costs $ 3,603 $ 3,064 Unamortized net premium on purchased loans (134 ) (127 ) Total unamortized net costs and premiums $ 3,469 $ 2,937 Loan to related parties at December 31, 2019 and December 31, 2018 are summarized below. (in thousands) 2019 2018 Beginning balance $ 8,395 $ 10,487 Changes in composition (1) (302 ) — New Loans 242 — Less: repayments (126 ) (2,092 ) Ending balance $ 8,209 $ 8,395 ______________________________________ (1) Adjustments to reflect changes in status of directors and officers for each year presented.
Schedule of Activity in the Accretable Yield for the Acquired Loan Portfolio that Falls Under the Review of ASC 310-30, Accounting for Certain Loans or Debt Securities Acquired in a Transfer	The following table summarizes activity in the accretable yield for the acquired loan portfolio that falls under the purview of ASC 310-30, Accounting for Certain Loans or Debt Securities Acquired in a Transfer: Twelve Months Ended December 31, (in thousands) 2019 2018 Balance at beginning of period $ 4,377 $ 3,509 Acquisitions 4,391 — Reclassification from nonaccretable difference for loans with improved cash flows 541 2,240 Changes in expected cash flows that do not affect the nonaccretable difference — — Reclassification to TDR — (30 ) Accretion (1,942 ) (1,342 ) Balance at end of period $ 7,367 $ 4,377
Summary of Past Due Loans	The following table summarizes activity in the accretable yield for the acquired loan portfolio that falls under the purview of ASC 310-30, Accounting for Certain Loans or Debt Securities Acquired in a Transfer: Twelve Months Ended December 31, (in thousands) 2019 2018 Balance at beginning of period $ 4,377 $ 3,509 Acquisitions 4,391 — Reclassification from nonaccretable difference for loans with improved cash flows 541 2,240 Changes in expected cash flows that do not affect the nonaccretable difference — — Reclassification to TDR — (30 ) Accretion (1,942 ) (1,342 ) Balance at end of period $ 7,367 $ 4,377 The following is a summary of past due loans at December 31, 2019 and December 31, 2018 : Business Activities Loans (in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loans Past Due > 90 days and Accruing December 31, 2019 Commercial real estate: Construction and land development $ 205 $ 53 $ — $ 258 $ 31,129 $ 31,387 $ — Other commercial real estate 40 1,534 1,810 3,384 662,667 666,051 — Total commercial real estate 245 1,587 1,810 3,642 693,796 697,438 — Commercial and industrial: Commercial 452 50 894 1,396 238,296 239,692 — Agricultural 62 34 96 192 19,826 20,018 — Tax exempt — — — — 66,860 66,860 — Total commercial and industrial 514 84 990 1,588 324,982 326,570 — Total commercial loans 759 1,671 2,800 5,230 1,018,778 1,024,008 — Residential real estate: Residential mortgages 7,293 1,243 668 9,204 731,483 740,687 — Total residential real estate 7,293 1,243 668 9,204 731,483 740,687 — Consumer: Home equity 597 43 429 1,069 58,299 59,368 50 Other consumer 36 12 — 48 11,119 11,167 — Total consumer 633 55 429 1,117 69,418 70,535 50 Total loans $ 8,685 $ 2,969 $ 3,897 $ 15,551 $ 1,819,679 $ 1,835,230 $ 50 Acquired Loans (in thousands) 30-59 Days 60-89 Days 90 Days or Greater Past Due Total Past Due Acquired Credit Impaired Total Loans Past Due > 90 days and Accruing December 31, 2019 Commercial real estate: Construction and land development $ — $ 12 $ — $ 12 $ 384 $ 2,903 $ — Other commercial real estate 2,029 245 231 2,505 8,289 230,320 — Total commercial real estate 2,029 257 231 2,517 8,673 233,223 — Commercial and industrial: Commercial 440 335 140 915 2,723 59,072 — Agricultural — — — — 173 206 — Tax exempt — — — — 36 37,443 — Total commercial and industrial 440 335 140 915 2,932 96,721 — Total commercial loans 2,469 592 371 3,432 11,605 329,944 — Residential real estate: Residential mortgages 3,185 864 1,015 5,064 5,591 411,170 — Total residential real estate 3,185 864 1,015 5,064 5,591 411,170 — Consumer: Home equity 208 548 217 973 1,291 63,033 217 Other consumer 2 9 — 11 66 1,715 — Total consumer 210 557 217 984 1,357 64,748 217 Total loans $ 5,864 $ 2,013 $ 1,603 $ 9,480 $ 18,553 $ 805,862 $ 217 Business Activities Loans (in thousands) 30-59 Days 60-89 Days 90 Days or Greater Past Due Total Past Due Current Total Loans Past Due > 90 days and Accruing December 31, 2018 Commercial real estate: Construction and land development $ — $ — $ — $ — $ 23,754 $ 23,754 $ — Other commercial real estate 1,146 — 6,725 7,871 548,109 555,980 — Total commercial real estate 1,146 — 6,725 7,871 571,863 579,734 — Commercial and industrial: Commercial 395 60 402 857 233,900 234,757 50 Agricultural 65 6 25 96 22,221 22,317 — Tax exempt — — — — 56,588 56,588 — Total commercial and industrial 460 66 427 953 312,709 313,662 50 Total commercial loans 1,606 66 7,152 8,824 884,572 893,396 50 Residential real estate: Residential mortgages 3,565 641 1,309 5,515 664,674 670,189 — Total residential real estate 3,565 641 1,309 5,515 664,674 670,189 — Consumer: Home equity 72 — — 72 57,826 57,898 — Other consumer 17 — 11 28 9,386 9,414 — Total consumer 89 — 11 100 67,212 67,312 — Total loans $ 5,260 $ 707 $ 8,472 $ 14,439 $ 1,616,458 $ 1,630,897 $ 50 Acquired Loans (in thousands) 30-59 Days 60-89 Days 90 Days or Greater Past Due Total Past Due Acquired Credit Impaired Total Loans Past Due > 90 days and Accruing December 31, 2018 Commercial real estate: Construction and land development $ — $ — $ — $ — $ 164 $ 2,890 $ — Other commercial real estate 631 99 211 941 6,143 244,075 — Total commercial real estate 631 99 211 941 6,307 246,965 — Commercial and industrial: Commercial 149 26 494 669 679 52,470 — Agricultural — — — — — — — Tax exempt — — — — — 38,738 — Total commercial and industrial 149 26 494 669 679 91,208 — Total commercial loans 780 125 705 1,610 6,986 338,173 — Residential real estate: Residential mortgages 3,419 254 1,792 5,465 3,095 474,509 189 Total residential real estate 3,419 254 1,792 5,465 3,095 474,509 189 Consumer: Home equity 198 — 66 264 22 45,291 7 Other consumer 17 — — 17 3 1,357 — Total consumer 215 — 66 281 25 46,648 7 Total loans $ 4,414 $ 379 $ 2,563 $ 7,356 $ 10,106 $ 859,330 $ 196
Summary of Information Pertaining to Non-Accrual Loans	Non-Accrual Loans The following is summary information pertaining to non-accrual loans at December 31, 2019 and December 31, 2018 : December 31, 2019 December 31, 2018 (in thousands) Business Activities Loans Acquired Loans Total Business Activities Loans Acquired Loans Total Commercial real estate: Construction and land development $ 258 $ — $ 258 $ 1 $ — $ 1 Other commercial real estate 2,888 343 3,231 7,873 282 8,155 Total commercial real estate 3,146 343 3,489 7,874 282 8,156 Commercial and industrial: Commercial 932 626 1,558 1,423 643 2,066 Agricultural 278 — 278 265 — 265 Tax exempt — — — — — — Total commercial and industrial 1,210 626 1,836 1,688 643 2,331 Total commercial loans 4,356 969 5,325 9,562 925 10,487 Residential real estate: Residential mortgages 3,362 1,973 5,335 4,213 2,997 7,210 Total residential real estate 3,362 1,973 5,335 4,213 2,997 7,210 Consumer: Home equity 615 254 869 246 201 447 Other consumer 21 — 21 90 1 91 Total consumer 636 254 890 336 202 538 Total loans $ 8,354 $ 3,196 $ 11,550 $ 14,111 $ 4,124 $ 18,235
Schedule of Loans Evaluated for Impairment	Loans evaluated for impairment by portfolio segment as of December 31, 2019 and December 31, 2018 were as follows: Business Activities Loans (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total December 31, 2019 Individually evaluated for impairment $ 3,964 $ 1,353 $ 2,620 $ 13 $ 7,950 Collectively evaluated 693,474 325,217 738,067 70,522 1,827,280 Total $ 697,438 $ 326,570 $ 740,687 $ 70,535 $ 1,835,230 Acquired Loans (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total December 31, 2019 Individually evaluated for impairment $ 258 $ 385 $ 1,032 $ — $ 1,675 Purchased credit impaired 8,673 2,932 5,591 1,357 18,553 Collectively evaluated 224,292 93,404 404,547 63,391 785,634 Total $ 233,223 $ 96,721 $ 411,170 $ 64,748 $ 805,862 Business Activities Loans (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total December 31, 2018 Individually evaluated for impairment $ 9,835 $ 1,445 $ 2,562 $ 13 $ 13,855 Collectively evaluated 569,899 312,217 667,627 67,299 1,617,042 Total $ 579,734 $ 313,662 $ 670,189 $ 67,312 $ 1,630,897 Acquired Loans (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total December 31, 2018 Individually evaluated for impairment $ 188 $ 426 $ 744 $ — $ 1,358 Purchased credit impaired 6,307 679 3,095 25 10,106 Collectively evaluated 240,470 90,103 470,670 46,623 847,866 Total $ 246,965 $ 91,208 $ 474,509 $ 46,648 $ 859,330
Summary of Impaired Loans	The following is a summary of impaired loans at December 31, 2019 and December 31, 2018 : Business Activities Loans December 31, 2019 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance: Construction and land development $ — $ — $ — Other commercial real estate 1,911 1,957 — Commercial 710 773 — Agricultural 361 361 — Tax exempt loans — — — Residential real estate 2,067 2,227 — Home equity — — — Other consumer — — — With an allowance recorded: Construction and land development $ 258 $ 258 $ 205 Other commercial real estate 1,795 1,940 1,026 Commercial 282 289 164 Agricultural — — — Tax exempt loans — — — Residential real estate 553 590 57 Home equity 13 13 — Other consumer — — — Total Commercial real estate $ 3,964 $ 4,155 $ 1,231 Commercial and industrial 1,353 1,423 164 Residential real estate 2,620 2,817 57 Consumer 13 13 — Total impaired loans $ 7,950 $ 8,408 $ 1,452 Acquired Loans December 31, 2019 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance: Construction and land development $ — $ — $ — Other commercial real estate 90 90 — Commercial 385 481 — Agricultural — — — Tax exempt loans — — — Residential real estate 678 938 — Home equity — — — Other consumer — — — With an allowance recorded: Construction and land development $ — $ — $ — Other commercial real estate 168 168 12 Commercial — — — Agricultural — — — Tax exempt loans — — — Residential real estate 354 376 49 Home equity — — — Other consumer — — — Total Commercial real estate $ 258 $ 258 $ 12 Commercial and industrial 385 481 — Residential real estate 1,032 1,314 49 Consumer — — — Total impaired loans $ 1,675 $ 2,053 $ 61 Business Activities Loans December 31, 2018 (in thousands) Recorded Investment Unpaid Principal Related Allowance With no related allowance: Construction and land development $ — $ — $ — Other commercial real estate 8,209 8,301 — Commercial 649 669 — Agricultural — — — Tax exempt loans — — — Residential real estate 1,671 1,709 — Home equity — — — Other consumer — — — With an allowance recorded: Construction and land development $ 1 $ 1 $ 1 Other commercial real estate 1,625 1,660 421 Commercial 796 855 78 Agricultural — — — Tax exempt loans — — — Residential real estate 891 916 111 Home equity 13 13 — Other consumer — — — Total Commercial real estate $ 9,835 $ 9,962 $ 422 Commercial and industrial 1,445 1,524 78 Residential real estate 2,562 2,625 111 Consumer 13 13 — Total impaired loans $ 13,855 $ 14,124 $ 611 Acquired Loans December 31, 2018 (in thousands) Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance: Construction and land development $ — $ — $ — Other commercial real estate 188 187 — Commercial 426 510 — Agricultural — — — Tax exempt loans — — — Residential real estate 375 524 — Home equity — — — Other consumer — — — With an allowance recorded: Construction and land development $ — $ — $ — Other commercial real estate — — — Commercial — — Agricultural — — — Tax exempt loans — — — Residential real estate 369 379 41 Home equity — — — Other consumer — — — Total Commercial real estate $ 188 $ 187 $ — Commercial and industrial 426 510 — Residential real estate 744 903 41 Consumer — — — Total impaired loans $ 1,358 $ 1,600 $ 41
Summary of the Average Recorded Investment and Interest Income Recognized on Impaired Loans	The following is a summary of the average recorded investment and interest income recognized on impaired loans as of December 31, 2019 and December 31, 2018 : Business Activities Loan Twelve Months Ended December 31, 2019 Twelve Months Ended December 31, 2018 (in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest With no related allowance: Construction and land development $ — $ — $ — $ — Other commercial real estate 5,434 55 6,878 77 Commercial 871 5 634 9 Agricultural — — — — Tax exempt loans — — — — Residential real estate 2,089 47 1,693 39 Home equity — — — — Other consumer — — — — With an allowance recorded: Construction and land development $ 56 $ 1 $ 1 $ — Other commercial real estate 1,737 — 1,140 — Commercial 153 — 735 — Agricultural — — — — Tax exempt loans — — — — Residential real estate 540 7 826 9 Home equity 13 — 13 1 Other consumer — — — — Total Commercial real estate $ 7,227 $ 56 $ 8,019 $ 77 Commercial and industrial 1,024 5 1,369 9 Residential real estate 2,629 54 2,519 48 Consumer 13 — 13 1 Total impaired loans $ 10,893 $ 115 $ 11,920 $ 135 Acquired Loans Twelve Months Ended December 31, 2019 Twelve Months Ended December 31, 2018 (in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest With no related allowance: Construction and land development $ — $ — $ — $ — Other commercial real estate 89 — 112 1 Commercial 429 — 441 1 Agricultural — — — — Tax exempt loans — — — — Residential real estate 652 — 442 — Home equity — — — — Other consumer — — — — With an allowance recorded: Construction and land development $ — $ — $ — $ — Other commercial real estate 123 — — — Commercial — — — — Agricultural — — — — Tax exempt loans — — — — Residential real estate 361 — 218 3 Home equity — — — — Other consumer — — — — Total Commercial real estate $ 212 $ — $ 112 $ 1 Commercial and industrial 429 — 441 1 Residential real estate 1,013 — 660 3 Consumer — — — — Total impaired loans $ 1,654 $ — $ 1,213 $ 5
Schedule of Recorded Investment and Number of Modifications for TDRs Identified During the Period	The following tables include the recorded investment and number of modifications identified during the twelve months ended December 31, 2019 , 2018 and 2017 , respectively. The table includes the recorded investment in the loans prior to a modification and also the recorded investment in the loans after the loans were restructured. Modifications may include adjustments to interest rates, payment amounts, extensions of maturity, court ordered concessions or other actions intended to minimize economic loss and avoid foreclosure or repossession of collateral. Twelve Months Ended December 31, 2019 (in thousands, except modifications) Number of Modifications Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Specific Reserve Troubled Debt Restructurings Construction and land development — $ — $ — $ — Other commercial real estate 10 630 529 69 Other commercial 7 366 271 — Agricultural 2 500 503 — Tax exempt — — — — Residential mortgages 12 1,427 1,327 — Home equity — — — — Other consumer — — — — Total 31 $ 2,923 $ 2,630 $ 69 Twelve Months Ended December 31, 2018 (in thousands, except modifications) Number of Modifications Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Specific Reserve Troubled Debt Restructurings Construction and land development 1 $ 1 $ 1 $ 1 Other commercial real estate 9 1,896 1,564 153 Other commercial 7 556 486 55 Agricultural 1 167 — — Residential mortgages 19 3,348 2,752 145 Home equity 1 100 100 — Other consumer 3 13 11 — Total 41 $ 6,081 $ 4,914 $ 354 Twelve Months Ended December 31, 2017 (in thousands, except modifications) Number of Modifications Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Specific Reserve Troubled Debt Restructurings Other commercial real estate 6 $ 388 $ 222 $ — Other commercial 6 563 545 — Agricultural 1 19 18 — Residential mortgages 3 692 670 — Home equity 1 13 13 — Other consumer 1 38 36 — Total 18 $ 1,713 $ 1,504 $ — The following table summarizes the types of loan concessions made for the periods presented: 2019 2018 2017 (in thousands, except modifications) Number of Modifications Post-Modification Outstanding Recorded Investment Number of Modifications Post-Modification Outstanding Recorded Investment Number of Modifications Post-Modification Outstanding Recorded Investment Interest rate and maturity concession 2 $ 73 1 $ 16 6 $ 725 Amortization and maturity concession 4 273 1 286 6 490 Amortization concession — — — — 1 94 Amortization, interest rate and maturity concession 5 539 — — 1 36 Amortization and interest rate concession — — — — — — Forbearance 5 346 3 271 — — Forbearance and interest only payments 7 692 6 121 — — Forbearance and interest rate concession — — 1 49 — — Forbearance and maturity concession 4 472 20 2,030 — — Maturity concession — — 2 440 — — Restructure without concession — — 5 1,419 — — Court ordered — — — — — — Other 4 235 2 282 4 159 Total 31 $ 2,630 41 $ 4,914 18 $ 1,504
Servicing Rights Activity	Servicing rights activity during 2019 and 2018 , included in other assets, was as follows: At or for the Twelve Months Ended December 31, (in thousands) 2019 2018 Balance at beginning of year $ 3,086 $ 3,232 Acquired — — Additions 160 99 Amortization (245 ) (245 ) Balance at end of year $ 3,001 $ 3,086

ALLOWANCE FOR LOAN LOSSES (Tabl

ALLOWANCE FOR LOAN LOSSES (Tables)	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Schedule of Activity in the Allowance for Loan Losses	Activity in the allowance for loan losses for the twelve months ended December 31, 2019 , 2018 and 2017 was as follows: Business Activities Loans At or for the Twelve Months Ended December 31, 2019 (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total Balance at beginning of period $ 6,811 $ 2,380 $ 3,982 $ 408 $ 13,581 Charged-off loans (212 ) (336 ) (109 ) (228 ) (885 ) Recoveries on charged-off loans 194 65 55 6 320 Provision/(releases) for loan losses 875 1,499 (526 ) 193 2,041 Balance at end of period $ 7,668 $ 3,608 $ 3,402 $ 379 $ 15,057 Individually evaluated for impairment 1,231 164 57 — 1,452 Collectively evaluated 6,437 3,444 3,345 379 13,605 Total $ 7,668 $ 3,608 $ 3,402 $ 379 $ 15,057 Acquired Loans At or for the Twelve Months Ended December 31, 2019 (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total Balance at beginning of period $ 173 $ 35 $ 77 $ — $ 285 Charged-off loans — (23 ) (240 ) (5 ) (268 ) Recoveries on charged-off loans — — — 3 3 Provision/(releases) for loan losses (26 ) (6 ) 306 2 276 Balance at end of period $ 147 $ 6 $ 143 $ — $ 296 Individually evaluated for impairment 12 — 49 — 61 Collectively evaluated 135 6 94 — 235 Total $ 147 $ 6 $ 143 $ — $ 296 Business Activities Loans At or for the Twelve Months Ended December 31, 2018 (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total Balance at beginning of period $ 6,037 $ 2,373 $ 3,357 $ 386 $ 12,153 Charged-off loans (417 ) (111 ) (225 ) (629 ) (1,382 ) Recoveries on charged-off loans 275 76 166 18 535 Provision/(releases) for loan losses 916 42 684 633 2,275 Balance at end of period $ 6,811 $ 2,380 $ 3,982 $ 408 $ 13,581 Individually evaluated for impairment 422 78 111 — 611 Collectively evaluated 6,389 2,302 3,871 408 12,970 Total $ 6,811 $ 2,380 $ 3,982 $ 408 $ 13,581 Acquired Loans At or for the Twelve Months Ended December 31, 2018 (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total Balance at beginning of period $ 97 $ 16 $ 59 $ — $ 172 Charged-off loans (136 ) (166 ) (158 ) (65 ) (525 ) Recoveries on charged-off loans 43 7 — 83 133 Provision/(releases) for loan losses 169 178 176 (18 ) 505 Balance at end of period $ 173 $ 35 $ 77 $ — $ 285 Individually evaluated for impairment — — 41 — 41 Collectively evaluated 173 35 36 — 244 Total $ 173 $ 35 $ 77 $ — $ 285 Business Activities Loans At or for the Twelve Months Ended December 31, 2017 (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total Balance at beginning of period $ 5,145 $ 1,952 $ 2,721 $ 601 $ 10,419 Charged-off loans (124 ) (189 ) (226 ) (162 ) (701 ) Recoveries on charged-off loans 49 11 65 18 143 Provision/(releases) for loan losses 967 599 797 (71 ) 2,292 Balance at end of period $ 6,037 $ 2,373 $ 3,357 $ 386 $ 12,153 Individually evaluated for impairment 447 3 9 — 459 Collectively evaluated 5,590 2,370 3,348 386 11,694 Total $ 6,037 $ 2,373 $ 3,357 $ 386 $ 12,153 Acquired Loans At or for the Twelve Months Ended December 31, 2017 (in thousands) Commercial real estate Commercial and industrial Residential real estate Consumer Total Balance at beginning of period $ — $ — $ — $ — $ — Charged-off loans (151 ) (18 ) (29 ) (127 ) (325 ) Recoveries on charged-off loans 1 — — — 1 Provision/(releases) for loan losses 247 34 88 127 496 Balance at end of period $ 97 $ 16 $ 59 $ — $ 172 Individually evaluated for impairment — — — — — Collectively evaluated 97 16 59 — 172 Total $ 97 $ 16 $ 59 $ — $ 172
Schedule of Loans by Risk Rating	The following tables present the Company’s commercial loans by risk rating at December 31, 2019 and December 31, 2018 : Business Activities Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category Commercial construction and land development Commercial real estate other Total commercial real estate (in thousands) December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 Grade: Pass $ 31,057 $ 23,680 $ 646,886 $ 532,386 $ 677,943 $ 556,066 Special mention — 73 5,483 8,319 5,483 8,392 Substandard 330 — 11,974 13,914 12,304 13,914 Doubtful — 1 1,708 1,361 1,708 1,362 Total $ 31,387 $ 23,754 $ 666,051 $ 555,980 $ 697,438 $ 579,734 Commercial and Industrial Credit Risk Profile by Creditworthiness Category Commercial Agricultural Tax exempt loans Total commercial and industrial (in thousands) December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 Grade: Pass $ 221,329 $ 226,353 $ 18,940 $ 21,680 $ 66,860 $ 56,588 $ 307,129 $ 304,621 Special mention 2,744 6,730 298 215 — — 3,042 6,945 Substandard 14,866 924 780 422 — — 15,646 1,346 Doubtful 753 750 — — — — 753 750 Total $ 239,692 $ 234,757 $ 20,018 $ 22,317 $ 66,860 $ 56,588 $ 326,570 $ 313,662 Residential Real Estate and Consumer Loans Credit Risk Profile Based on Payment Activity Residential real estate Home equity Other consumer Total residential real estate and consumer (in thousands) Dec 31, 2019 Dec 31, 2018 Dec 31, 2019 Dec 31, 2018 Dec 31, 2019 Dec 31, 2018 Dec 31, 2019 Dec 31, 2018 Performing $ 737,325 $ 665,976 $ 58,753 $ 57,652 $ 11,146 $ 9,324 $ 807,224 $ 732,952 Non-performing 3,362 4,213 615 246 21 90 3,998 4,549 Total $ 740,687 $ 670,189 $ 59,368 $ 57,898 $ 11,167 $ 9,414 $ 811,222 $ 737,501 Acquired Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category Commercial construction and land development Commercial real estate other Total commercial real estate (in thousands) December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 Grade: Pass $ 2,412 $ 2,626 $ 218,491 $ 236,393 $ 220,903 $ 239,019 Special mention 12 — 2,261 1,574 2,273 1,574 Substandard 479 264 9,400 6,009 9,879 6,273 Doubtful — — 168 99 168 99 Total $ 2,903 $ 2,890 $ 230,320 $ 244,075 $ 233,223 $ 246,965 Commercial and Industrial Credit Risk Profile by Creditworthiness Category Commercial Agricultural Tax exempt loans Total commercial and industrial (in thousands) December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 December 31, 2019 December 31, 2018 Grade: Pass $ 51,184 $ 46,120 $ 58 $ — $ 37,407 $ 38,738 $ 88,649 $ 84,858 Special mention 5,432 4,825 — — — — 5,432 4,825 Substandard 2,115 1,222 148 — 36 — 2,299 1,222 Doubtful 341 303 — — — — 341 303 Total $ 59,072 $ 52,470 $ 206 $ — $ 37,443 $ 38,738 $ 96,721 $ 91,208 Residential Real Estate and Consumer Loans Credit Risk Profile Based on Payment Activity Residential real estate Home equity Other consumer Total residential real estate and consumer (in thousands) Dec 31, 2019 Dec 31, 2018 Dec 31, 2019 Dec 31, 2018 Dec 31, 2019 Dec 31, 2018 Dec 31, 2019 Dec 31, 2018 Performing $ 407,811 $ 470,497 $ 62,504 $ 45,090 $ 1,707 $ 1,356 $ 472,022 $ 516,943 Non-performing 3,359 4,012 529 201 8 1 3,896 4,214 Total $ 411,170 $ 474,509 $ 63,033 $ 45,291 $ 1,715 $ 1,357 $ 475,918 $ 521,157
Summary of Information About Total Loans Rated Special Mention or Lower	The following table summarizes information about total classified and criticized loans loans as of December 31, 2019 and December 31, 2018 . December 31, 2019 December 31, 2018 (in thousands) Business Activities Loans Acquired Loans Total Business Activities Loans Acquired Loans Total Non-accrual $ 8,354 $ 3,196 $ 11,550 $ 14,111 $ 4,124 $ 18,235 Substandard accruing 26,055 13,387 39,442 7,810 7,987 15,797 Doubtful accruing — — — — — — Total classified 34,409 16,583 50,992 21,921 12,111 34,032 Special mention 8,525 7,705 16,230 15,337 6,399 21,736 Total Criticized $ 42,934 $ 24,288 $ 67,222 $ 37,258 $ 18,510 $ 55,768

PREMISES AND EQUIPMENT (Tables)

PREMISES AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Premises and Equipment	Year-end premises and equipment at December 31, 2019 and December 31, 2018 are summarized as follows: (in thousands, except years) 2019 2018 Estimated Useful Life Land $ 5,028 $ 4,837 N/A Buildings and improvements 52,363 50,933 5 -39 years Furniture and equipment 13,573 9,098 3 - 7 years Premises and equipment, gross 70,964 64,868 Accumulated depreciation (19,759 ) (16,064 ) Premises and equipment, net $ 51,205 $ 48,804

GOODWILL AND OTHER INTANGIBLES

GOODWILL AND OTHER INTANGIBLES (Tables)	12 Months Ended
	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The activity impacting goodwill in 2019 and 2018 is as follows: (in thousands) 2019 2018 Balance at beginning of year $ 100,085 $ 100,085 Acquisition 18,564 — Balance at end of year $ 118,649 $ 100,085
Schedule of Finite-Lived Intangible Assets	The components of other intangible assets in 2019 and 2018 are as follows: 2019 (in thousands) Gross Intangible Assets Accumulated Amortization Net Intangible Assets Core deposit intangible (non-maturity deposits) $ 9,483 $ (2,635 ) $ 6,848 Customer list and other intangibles 2,065 (272 ) 1,793 Total $ 11,548 $ (2,907 ) $ 8,641 2018 (in thousands) Gross Intangible Assets Accumulated Amortization Net Intangible Assets Core deposit intangible (non-maturity deposits) $ 8,586 $ (1,878 ) $ 6,708 Customer list and other intangibles 919 (168 ) 751 Total $ 9,505 $ (2,046 ) $ 7,459
Schedule of Future Amortization Expense	The estimated aggregate future amortization expense for other intangible assets remaining at year end 2019 is as follows: (in thousands) Other Intangible Assets 2020 $ 975 2021 932 2022 932 2023 932 2024 932 and thereafter 3,938 Total other intangible assets $ 8,641

DEPOSITS (Tables)

DEPOSITS (Tables)	12 Months Ended
	Dec. 31, 2019
Deposits [Abstract]
Summary of Time Deposits	A summary of time deposits at December 31, 2019 and December 31, 2018 were as follows: (in thousands) December 31, 2019 December 31, 2018 Time less than $100,000 $ 600,747 $ 622,478 Time $100,000 through $250,000 225,505 193,535 Time $250,000 or more 106,383 116,780 Total time deposits $ 932,635 $ 932,793
Time Deposit Maturities	At December 31, 2019 and December 31, 2018 , the scheduled maturities by year for time deposits were as follows: (in thousands) December 31, 2019 December 31, 2018 Within 1 year $ 555,074 $ 505,313 Over 1 year to 2 years 287,934 258,176 Over 2 years to 3 years 51,444 123,337 Over 3 years to 4 years 31,262 14,494 Over 4 years to 5 years 6,883 31,353 Over 5 years 38 120 Total $ 932,635 $ 932,793

BORROWED FUNDS (Tables)

BORROWED FUNDS (Tables)	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Schedule of Borrowed Funds	Borrowed funds at December 31, 2019 and December 31, 2018 are summarized, as follows: December 31, 2019 December 31, 2018 (in thousands, except ratios) Amount Weighted Average Rate Amount Weighted Average Rate Short-term borrowings Advances from the FHLB $ 303,286 1.83 % $ 611,683 2.47 % Other borrowings 44,832 0.99 36,211 1.09 Total short-term borrowings 348,118 1.73 647,894 2.39 Long-term borrowings Advances from the FHLB 123,278 1.93 32,929 1.86 Subordinated borrowings 59,920 5.53 37,973 5.58 Junior subordinated borrowings — — 5,000 5.96 Total long-term borrowings 183,198 2.87 75,902 3.99 Total $ 531,316 2.11 % $ 723,796 2.56 %
Summary of Maturities of FHLBB Advances	A summary of maturities of FHLB advances as of December 31, 2019 is as follows: December 31, 2019 (in thousands, except rates) Amount Weighted Fixed rate advances maturing: 2020 $ 303,286 1.83 % 2021 10,662 2.21 2022 104,000 1.97 2023 1,000 — 2024 7,300 1.16 2025 and thereafter 316 4.05 Total FHLB advances $ 426,564 1.85 %

EMPLOYEE BENEFIT PLANS (Tables)

EMPLOYEE BENEFIT PLANS (Tables)	12 Months Ended
	Dec. 31, 2019
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan	The following tables set forth information about the plan for the year ended December 31, 2019 and 2018 : (in thousands) 2019 2018 Change in projected benefit obligation: Projected benefit obligation at beginning of year $ 8,009 $ 9,020 Service cost — — Interest cost 331 315 Actuarial loss (gain) 1,068 (771 ) Benefits paid (300 ) (291 ) Settlements (182 ) (264 ) Projected benefit obligation at end of year 8,926 8,009 Change in fair value of plan assets: Fair value of plan assets at beginning of year 9,990 11,026 Expected return on plan assets 1,570 (481 ) Contributions by employer — — Benefits paid (300 ) (291 ) Settlements (182 ) (264 ) Fair value of plan assets at end of year 11,078 9,990 Overfunded status $ (2,152 ) $ (1,981 ) Amounts recognized in consolidated balance sheet: Other assets $ 2,152 $ 1,981
Schedule of Net Benefit Costs	Net periodic pension cost is comprised of the following for the year ended December 31, 2019 and 2018 : (in thousands) 2019 2018 Interest cost $ 331 $ 315 Expected return on plan assets (638 ) (706 ) Settlement Charge — — Net periodic pension benefit credit $ (307 ) $ (391 ) (in thousands) 2019 2018 Net actuarial loss $ 145 $ 415 Settlement charge — — Net period pension benefit credit (307 ) (391 ) Total recognized in net periodic benefit (credit) cost and other comprehensive (income) loss $ (162 ) $ 24
Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss)	Change in plan assets and benefit obligations recognized in accumulated other comprehensive income as of December 31, 2019 and 2018 are as follows: (in thousands) 2019 2018 Net actuarial loss $ 145 $ 415 Settlement charge — — Prior service cost 748 333 Total accumulated other comprehensive loss (pre-tax) $ 893 $ 748
Schedule of Assumptions Used	The principal actuarial assumptions used at December 31, 2019 and 2018 were as follows: 2019 2018 Projected benefit obligation Discount rate 3.23 % 4.23 % Net periodic pension cost Discount rate 4.23 % 3.56 % Long-term rate of return on plan assets 6.50 6.50
Schedule of Allocation of Plan Assets	The fair value of the Plan's assets by category and level within fair value hierarchy are as follows at December 31, 2019 and 2018 : 2019 (in thousands) Total Level 1 Level 2 Asset Category Equity mutual funds: Large-cap $ 2,144 $ 2,144 $ — Mid-cap 590 590 — Small-cap 557 557 — International 1,009 1,009 Fixed income funds: Fixed-income - core plus 4,028 4,028 — Intermediate duration 1,371 1,371 — Common stock 574 574 — Common/collective trusts - large-cap 566 — 566 Cash equivalents - money market 230 230 — Total $ 11,069 $ 10,503 $ 566 2018 (in thousands) Total Level 1 Level 2 Asset Category Equity mutual funds: Large-cap $ 1,730 $ 1,730 $ — Mid-cap 477 477 — Small-cap 469 469 — International 845 845 Fixed income funds: Fixed-income - core plus 3,945 3,945 — Intermediate duration 1,321 1,321 — Common stock 506 506 — Common/collective trusts - large-cap 469 — 469 Cash equivalents - money market 228 228 — Total $ 9,990 $ 9,521 $ 469
Schedule of Expected Benefit Payments	Estimated benefit payments under the Company's pension plan over the next 10 years at December 31, 2019 are as follows: Year Payments in Thousands 2020 $ 365 2021 364 2022 383 2023 379 2024 394 2025-2029 2,262
Non-qualified Supplemental Executive Retirement Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan	The following table sets forth changes in benefit obligation, changes in plan assets, and the funded status of the plan as of and for the years ended December 31, 2019 and December 31, 2018 : (in thousands) 2019 2018 Change in benefit obligation: Projected benefit obligation at beginning of year $ 3,033 $ 3,451 Service cost — — Interest cost 103 102 Actuarial loss/(gain) 221 (142 ) Benefits paid (378 ) (378 ) Projected benefit obligation at end of year $ 2,979 $ 3,033 Change in fair value of plan assets: Fair value of plan assets at beginning of year $ — $ — Expected return on plan assets — — Contributions by employer 378 378 Benefits paid (378 ) (378 ) Fair value of plan assets at end of year $ — $ — Underfunded status $ 2,979 $ 3,033 Amounts recognized in consolidated balance sheet Other liabilities $ 2,979 $ 3,033
Schedule of Net Benefit Costs	Net periodic benefit cost is comprised of the following for the years ended December 31, 2019 and 2018 : (in thousands) 2019 2018 Interest cost $ 103 $ 102 Expected return on plan assets — — Amortization of unrecognized actuarial loss 15 29 Net periodic benefit cost $ 118 $ 131 (in thousands) 2019 2018 Net actuarial loss (gain) $ 220 $ (142 ) Amortization of unrecognized actuarial loss (15 ) (29 ) Total recognized in net periodic benefit cost and other comprehensive loss $ 205 $ (171 )
Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss)	Change in plan assets and benefit obligations recognized in accumulated other comprehensive income in 2019 and 2018 are as follows: (in thousands) 2019 2018 Accumulated other comprehensive income at beginning of the year (pre-tax) $ 414 $ 585 Actuarial loss (gain) 220 (142 ) Amortization of actuarial loss (15 ) (29 ) Accumulated other comprehensive income at end of year (pre-tax) $ 619 $ 414
Schedule of Assumptions Used	The principal actuarial assumptions used at December 31, 2019 and December 31, 2018 were as follows: 2019 2018 Discount rate beginning of year 3.83 % 3.13 % Discount rate end of year 2.65 3.83
Schedule of Expected Benefit Payments	The Company expects to contribute the following amounts to fund benefit payments under the supplemental executive retirement plans: (in thousands) Payments 2020 $ 293 2021 260 2022 260 2023 260 2024 260 2025-2036 2,027

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	The following table summarizes the current and deferred components of income tax expense (benefit) for each of the years ended December 31, 2019 , 2018 and 2017 : (in thousands) 2019 2018 2017 Current: Federal tax expense $ 2,639 $ 6,775 $ 8,705 State tax expense 550 1,230 1,039 Total current tax expense 3,189 8,005 9,744 Deferred tax expense 1,020 (443 ) 2,898 Impact of federal tax reform enactment — — 3,988 Total income tax expense $ 4,209 $ 7,562 $ 16,630
Schedule of Effective Income Tax Rate Reconciliation	The following table reconciles the expected federal income tax expense (computed by applying the federal statutory tax rate of 21%, 35% for years prior to 2018) to recorded income tax expense for the years ended December 31, 2019 , 2018 and 2017 : 2019 2018 2017 (in thousands, except ratios) Amount Rate Amount Rate Amount Rate Statutory tax rate $ 5,633 21.00 % $ 8,505 21.00 % $ 14,918 35.00 % Increase (decrease) resulting from: State taxes, net of federal benefit 547 2.04 908 2.24 986 2.31 Tax exempt interest (1,375 ) (5.13 ) (1,315 ) (3.25 ) (2,074 ) (4.87 ) Federal tax credits (282 ) (1.05 ) (125 ) (0.31 ) (130 ) (0.3 ) Officers' life insurance (431 ) (1.61 ) (382 ) (0.94 ) (538 ) (1.26 ) Acquisition costs — — — — 89 0.21 Stock-based compensation plans (20 ) (0.07 ) (120 ) (0.3 ) (241 ) (0.57 ) Impact of federal tax reform enactment — — — — 3,988 9.36 Other 137 0.51 91 0.23 (368 ) (0.86 ) Effective tax rate $ 4,209 15.69 % $ 7,562 18.67 % $ 16,630 39.02 %
Schedule of Deferred Tax Assets and Liabilities	The significant components of deferred tax assets and liabilities at December 31, 2019 and December 31, 2018 were as follows: 2019 2018 (in thousands) Assets Liabilities Assets Liabilities Allowance for loan losses $ 3,507 $ — $ 3,085 $ — Deferred compensation 3,383 — 3,242 — Unrealized gain or loss on securities available for sale — 1,858 2,641 — Unrealized gain or loss on derivatives 307 — 685 — Depreciation — 1,722 — 1,517 Deferred loan origination costs — 862 — 725 Non-accrual interest 381 — 374 — Branch acquisition costs and goodwill — 712 — 784 Core deposit intangible — 1,231 — 1,309 Acquisition fair value adjustments 2,223 — 3,171 — Prepaid expenses — 311 — 215 Interest rate cap premium amortization — — — 257 Mortgage servicing rights — 703 — 721 Equity compensation 468 — 335 — Prepaid pension — 359 — 366 Contract incentives 1,167 — 1,658 — Right of use asset — 2,253 — — Lease liability 2,273 — — — Other 160 — 217 — Total $ 13,869 $ 10,011 $ 15,408 $ 5,894

DERIVATIVE FINANCIAL INSTRUME_2

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES (Tables)	12 Months Ended
	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of information about derivative assets and liabilities	Information about derivative assets and liabilities at December 31, 2019 and December 31, 2018 , follows: December 31, 2019 Notional Amount Weighted Average Maturity Fair Value Asset (Liability) Location Fair Value Asset (Liability) (in thousands) (in years) (in thousands) Cash flow hedges: Interest rate swap on deposits $ 100,000 4.6 $ (1,311 ) Other liabilities Total cash flow hedges 100,000 (1,311 ) Fair value hedges: Interest rate swap on securities 37,190 9.6 593 Other liabilities Total fair value hedges 37,190 593 Economic hedges: Forward sale commitments 11,228 0.1 (84 ) Other liabilities Customer Loan Swaps - MNA Counterparty 135,598 7.5 (4,669 ) (1) Customer Loan Swaps - RPA Counterparty 69,505 8.8 (3,377 ) (1) Customer Loan Swaps - Customer 205,103 8.1 8,046 (1) Total economic hedges 421,434 (84 ) Non-hedging derivatives: Interest rate lock commitments 21,748 0.1 59 Other assets Total non-hedging derivatives 21,748 59 Total $ 580,372 $ (743 ) (1) Customer loan derivatives are subject to MNA or RPA arrangements with financial institution counterparties, thus assets and liabilities with the counterparty are netted for financial statement presentation. December 31, 2018 Notional Amount Weighted Average Maturity Fair Value Asset (Liability) Location Fair Value Asset (Liability) (in thousands) (in years) (in thousands) Cash flow hedges: Interest rate caps agreements $ 90,000 4.1 $ 803 Other liabilities Total cash flow hedges 90,000 803 Non-hedging derivatives: Interest rate lock commitments 957 0.1 8 Other assets Customer loan derivative liability 45,641 9.9 (1,353 ) (1) Customer loan derivative asset 45,641 9.9 1,353 (1) Total non-hedging derivatives 92,239 8 Total $ 182,239 $ 811 (1) Customer loan derivatives are subject to MNA or RPA arrangements with financial institution counterparties, thus assets and liabilities with the counterparty are netted for financial statement presentation. As of December 31, 2019, and 2018, the following amounts were recorded on the balance sheet related to cumulative basis adjustments for fair value hedges: Location of Hedged Item on Balance Sheet Carrying Amount of Hedged Assets (Liabilities) Cumulative Amount of Fair Value Hedging Adjustment in Carrying Amount December 31, 2019 Fair value hedges: Interest rate swap on securities Securities Available for Sale $ 39,026 $ 523 December 31, 2018 Fair value hedges: Interest rate swap on securities Securities Available for Sale $ — $ — Information about derivative assets and liabilities for December 31, 2019 and December 31, 2018 , follows: Twelve Months Ended December 31, 2019 (in thousands) Amount of Gain (Loss) Recognized in Other Comprehensive Income Location of Gain (Loss) Reclassified from Other Comprehensive Income Amount of Gain (Loss) Reclassified from Other Comprehensive Income (1) Location of Gain (Loss) Recognized in Amount of Gain (Loss) Recognized in Income Cash flow hedges: Interest rate cap agreements $ — Acquisition, restructuring, and other expenses $ 3,156 Interest expense $ (603 ) Interest rate swap on deposits 2,291 Interest expense — Interest expense (2 ) Total cash flow hedges 2,291 3,156 (605 ) Fair value hedges: Interest rate swap on securities (523 ) Interest income — Interest income 7 Total fair value hedges (523 ) — 7 Economic hedges: Forward commitments — Other income — Other income (84 ) Total economic hedges — — (84 ) Non-hedging derivatives: Interest rate lock commitments — Other Income — Other Income 52 Total non-hedging derivatives — — 52 Total $ 1,768 $ 3,156 $ (630 ) (1) As of December 31, 2019 the Company does not expect any gains or losses from accumulated other comprehensive income into earnings withing the next 12 months. Twelve Months Ended December 31, 2018 (in thousands) Amount of Gain (Loss) Recognized in Other Comprehensive Income Location of Gain (Loss) Reclassified from Other Comprehensive Income Amount of Gain (Loss) Reclassified from Other Comprehensive Income (1) Location of Gain (Loss) Recognized in Amount of Gain (Loss) Recognized in Income Cash flow hedges: Interest rate cap agreements $ 486 Acquisition, restructuring, and other expenses $ — Interest expense $ (519 ) Total cash flow hedges 486 — (519 ) Economic hedges: Forward commitments — Other income — Other income 221 Total economic hedges — — — Non-hedging derivatives: Interest rate lock commitments — Other Income — Other Income 9 Total non-hedging derivatives — — 9 Total $ 486 $ — $ (510 ) (1) As of December 31, 2019 the Company does not expect any gains or losses from accumulated other comprehensive income into earnings withing the next 12 months.
Offsetting Liabilities	The below table describes the potential effect of master netting arrangements on the consolidated balance sheet and the financial collateral pledged for these arrangements: Gross Amounts Offset in the Consolidated Balance Sheet (in thousands) Derivative Liabilities Derivative Assets Cash Collateral Pledged Net Amount As of December 31, 2019 Customer Loan Derivatives: MNA counterparty $ (4,669 ) $ 4,669 $ 10,700 $ — RPA counterparty (3,377 ) 3,377 — — Total $ (8,046 ) $ 8,046 $ 10,700 $ —
Offsetting Assets	The below table describes the potential effect of master netting arrangements on the consolidated balance sheet and the financial collateral pledged for these arrangements: Gross Amounts Offset in the Consolidated Balance Sheet (in thousands) Derivative Liabilities Derivative Assets Cash Collateral Pledged Net Amount As of December 31, 2019 Customer Loan Derivatives: MNA counterparty $ (4,669 ) $ 4,669 $ 10,700 $ — RPA counterparty (3,377 ) 3,377 — — Total $ (8,046 ) $ 8,046 $ 10,700 $ —

OTHER COMMITMENTS, CONTINGENC_2

OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES (Tables)	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule of Loss Contingencies by Contingency	The following table summarizes the contractual amounts of commitments and contingent liabilities to customers as of December 31, 2019 and December 31, 2018 : (in thousands) 2019 2018 Commitments to originate new loans $ 112,669 $ 20,431 Unused funds on commercial and other lines of credit 188,098 169,063 Unadvanced funds on home equity lines of credit 114,711 106,121 Unadvanced funds on construction and real estate loans 97,500 133,130 Commercial letters of credit 2,941 1,171 Standby letters of credit — 486 Total $ 515,919 $ 430,402

SHAREHOLDERS_ EQUITY AND EARN_2

SHAREHOLDERS’ EQUITY AND EARNINGS PER COMMON SHARE (Tables)	12 Months Ended
	Dec. 31, 2019
Stockholders' Equity Note [Abstract]
Schedule of Actual and Required Capital Ratios	The actual and required capital ratios at December 31, 2019 and December 31, 2018 were as follows: 2019 Actual Regulatory Minimum to be "Well-Capitalized" (in thousands, except ratios) Amount Ratio Amount Ratio Company (consolidated) Total capital to risk-weighted assets $ 341,492 13.61 % $ 263,377 10.50 % Common equity tier 1 capital to risk-weighted assets 265,205 10.57 175,584 7.00 Tier 1 capital to risk-weighted assets 285,825 11.39 213,211 8.50 Tier 1 capital to average assets 285,825 8.13 175,890 5.00 Bank Total capital to risk-weighted assets $ 310,982 12.42 % $ 262,999 10.50 % Common equity tier 1 capital to risk-weighted assets 295,315 11.79 175,332 7.00 Tier 1 capital to risk-weighted assets 295,315 11.79 212,904 8.50 Tier 1 capital to average assets 295,315 8.39 175,996 5.00 2018 Actual Regulatory Minimum to be "Well-Capitalized" (in thousands, except ratios) Amount Ratio Amount Ratio Company (consolidated) Total capital to risk-weighted assets $ 331,628 14.23 % $ 230,093 9.88 % Common equity tier 1 capital to risk-weighted assets 274,838 11.80 148,542 6.38 Tier 1 capital to risk-weighted assets 295,458 12.68 183,492 7.88 Tier 1 capital to average assets 295,458 8.53 173,102 5.00 Bank Total capital to risk-weighted assets $ 321,390 13.82 % $ 229,707 9.88 % Common equity tier 1 capital to risk-weighted assets 302,220 12.99 148,292 6.38 Tier 1 capital to risk-weighted assets 302,220 12.99 183,184 7.88 Tier 1 capital to average assets 302,220 8.74 172,990 5.00
Schedule of Components of Accumulated Other Comprehensive Income	Components of accumulated other comprehensive income at December 31, 2019 and December 31, 2018 are as follows: (in thousands) 2019 2018 Other accumulated comprehensive income (loss), before tax: Net unrealized gain (loss) on AFS securities $ 7,342 $ (11,304 ) Net unrealized loss on derivative hedges (718 ) (2,934 ) Net unrealized loss on post-retirement plans (1,512 ) (1,162 ) Income taxes related to items of accumulated other comprehensive (income) loss: Net unrealized (gain) loss on AFS securities (1,793 ) 2,641 Net unrealized loss on derivative hedges 237 685 Net unrealized loss on post-retirement plans 355 272 Accumulated other comprehensive income (loss) $ 3,911 $ (11,802 ) The following table presents the changes in each component of accumulated other comprehensive income/(loss) in 2019 , 2018 and 2017 : 2019 (in thousands) Net unrealized gain on AFS Securities Net loss on effective derivative hedges Net unrealized loss on post-retirement plans Total Balance at beginning of period $ (8,665 ) $ (2,249 ) $ (888 ) $ (11,802 ) Other comprehensive gain/(loss) before reclassifications 14,394 (651 ) (267 ) 13,476 Less: amounts reclassified from accumulated other comprehensive income 182 (2,419 ) — (2,237 ) Total other comprehensive loss 14,212 1,768 (267 ) 15,713 Balance at end of period $ 5,547 $ (481 ) $ (1,155 ) $ 3,911 2018 (in thousands) Net unrealized gain on AFS Securities Net loss on effective derivative hedges Net unrealized loss on post-retirement plans Total Balance at beginning of period $ (1,713 ) $ (2,250 ) $ (591 ) $ (4,554 ) Other comprehensive gain/(loss) before reclassifications (7,293 ) 486 (191 ) (6,998 ) Less: amounts reclassified from accumulated other comprehensive income (708 ) — (22 ) (730 ) Total other comprehensive loss (6,585 ) 486 (169 ) (6,268 ) Less: amounts reclassified from accumulated other comprehensive income for ASU 2018-02 (367 ) (485 ) (128 ) (980 ) Balance at end of period $ (8,665 ) $ (2,249 ) $ (888 ) $ (11,802 ) 2017 (in thousands) Net unrealized gain on AFS Securities Net loss on effective derivative hedges Net unrealized loss on post-retirement plans Total Balance at beginning of period $ (2,125 ) $ (1,798 ) $ (403 ) $ (4,326 ) Other comprehensive gain/(loss) before reclassifications 424 (452 ) (201 ) (229 ) Less: amounts reclassified from accumulated other comprehensive income 12 — (13 ) (1 ) Total other comprehensive loss 412 (452 ) (188 ) (228 ) Balance at end of period $ (1,713 ) $ (2,250 ) $ (591 ) $ (4,554 )
Schedule of Components of Other Comprehensive Income	The following table presents the components of other comprehensive income in 2019 , 2018 and 2017 : 2019 (in thousands) Before Tax Tax Effect Net of Tax Net unrealized gain on AFS securities: Net unrealized gain arising during the period $ 18,883 $ (4,489 ) $ 14,394 Less: reclassification adjustment for gains (losses) realized in net income 237 (55 ) 182 Net unrealized gain on AFS securities 18,646 (4,434 ) 14,212 Net unrealized loss on derivative hedges: Net unrealized loss arising during the period (940 ) 289 (651 ) Less: reclassification adjustment for gains (losses) realized in net income (3,156 ) 737 (2,419 ) Net unrealized gain on derivative hedges 2,216 (448 ) 1,768 Net unrealized gain on post-retirement plans: Net unrealized gain arising during the period (350 ) 83 (267 ) Less: reclassification adjustment for gains (losses) realized in net income — — — Net unrealized gain on post-retirement plans (350 ) 83 (267 ) Other comprehensive income $ 20,512 $ (4,799 ) $ 15,713 2018 (in thousands) Before Tax Tax Effect Net of Tax Net unrealized loss on AFS securities: Net unrealized loss arising during the period $ (9,487 ) $ 2,194 $ (7,293 ) Less: reclassification adjustment for gains (losses) realized in net income (924 ) 216 (708 ) Net unrealized loss on AFS securities (8,563 ) 1,978 (6,585 ) Net unrealized gain on derivative hedges: Net unrealized gain arising during the period 654 (168 ) 486 Less: reclassification adjustment for gains (losses) realized in net income — — — Net unrealized gain on derivative hedges 654 (168 ) 486 Net unrealized loss on post-retirement plans: Net unrealized loss arising during the period (245 ) 54 (191 ) Less: reclassification adjustment for gains (losses) realized in net income (29 ) 7 (22 ) Net unrealized loss on post-retirement plans (216 ) 47 (169 ) Other comprehensive loss $ (8,125 ) $ 1,857 $ (6,268 ) 2017 (in thousands) Before Tax Tax Effect Net of Tax Net unrealized gain on AFS securities: Net unrealized gain arising during the period $ 545 $ (121 ) $ 424 Less: reclassification adjustment for gains (losses) realized in net income 19 (7 ) 12 Net unrealized gain on AFS securities 526 (114 ) 412 Net unrealized loss on derivative hedges: Net unrealized loss arising during the period (838 ) 386 (452 ) Less: reclassification adjustment for gains (losses) realized in net income — — — Net unrealized loss on derivative hedges (838 ) 386 (452 ) Net unrealized loss on post-retirement plans: Net unrealized loss arising during the period (347 ) 146 (201 ) Less: reclassification adjustment for gains (losses) realized in net income (21 ) 8 (13 ) Net unrealized loss on post-retirement plans (326 ) 138 (188 ) Other comprehensive loss $ (638 ) $ 410 $ (228 )
Schedule of Reclassification out of Accumulated Other Comprehensive Income	The following tables presents the amounts reclassified out of each component of accumulated other comprehensive income (loss) in 2019, 2018 and 2017 : (in thousands) 2019 2018 2017 Affected Line Item where Net Income is Presented Realized gains on AFS securities: Before tax $ 237 $ (924 ) $ 19 Non-interest income Tax effect (55 ) 216 (7 ) Tax expense Total reclassifications for the period $ 182 $ (708 ) $ 12 Net of tax (in thousands) 2019 2018 2017 Affected Line Item where Net Income is Presented Realized loss on effective derivative hedges: Before tax $ (3,156 ) $ — $ — Non-interest expense Tax effect 737 — — Tax benefit Total reclassifications for the period $ (2,419 ) $ — $ — Net of tax (in thousands) 2019 2018 2017 Affected Line Item where Net Income is Presented Realized loss on post-retirement plans: Before tax $ — $ (29 ) $ (21 ) Salaries and benefits Tax effect — 7 8 Tax benefit Total reclassifications for the period $ — $ (22 ) $ (13 ) Net of tax
Schedule of Earnings Per Share, Basic and Diluted	Earnings per share have been computed based on the following (average diluted shares outstanding are calculated using the treasury stock method): (in thousands, except per share and share data) 2019 2018 2017 Net income $ 22,620 $ 32,937 $ 25,993 Average number of basic common shares outstanding 15,540,884 15,487,686 15,183,615 Plus: dilutive effect of stock options and awards outstanding 46,109 76,778 106,795 Average number of diluted common shares outstanding 15,586,993 15,564,464 15,290,410 Anti-dilutive options excluded from earnings calculation — 7,991 8,659 Earnings per share: Basic $ 1.46 $ 2.13 $ 1.71 Diluted $ 1.45 $ 2.12 $ 1.70

STOCK BASED COMPENSATION PLANS

STOCK BASED COMPENSATION PLANS (Tables)	12 Months Ended
	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
Allocation of Recognized Compensation Expense	Compensation expense recognized in connection with the stock based compensation plans are presented in the following table for the years ended December 31, 2019 , 2018 , and 2017 : (in thousands) 2019 2018 2017 Stock options and restricted stock awards $ 328 $ 350 $ 399 Performance stock units 170 237 290 Restricted stock units 854 711 585 Total compensation expense $ 1,352 $ 1,298 $ 1,274
Summary of Stock Option Activity	A summary combined status of the stock option and restricted stock awards as of December 31, 2019 and 2018 , and changes during the year then ended is presented below: Stock Options Number of Stock Options Outstanding Weighted Average Exercise Price Aggregate Intrinsic Value (in thousands) Outstanding at January 1, 2019 121,637 $ 19.96 Granted — — Exercised (13,853 ) 18.44 Forfeited — — Outstanding at December 31, 2019 107,784 $ 20.15 $ 565 Ending vested and expected to vest December 31, 2019 107,784 $ 20.15 $ 565 Exercisable at December 31, 2019 98,460 20.48 483 Stock Options Number of Stock Options Outstanding Weighted Average Exercise Price Aggregate Intrinsic Value (in thousands) Outstanding at January 1, 2018 169,921 $ 18.95 Granted — — Exercised (47,534 ) 16.32 Forfeited (750 ) 22.16 Outstanding at December 31, 2018 121,637 $ 19.96 $ 313 Ending vested and expected to vest December 31, 2018 121,637 $ 19.96 $ 313 Exercisable at December 31, 2018 101,554 20.66 192
Summary of Restricted Stock Awards Activity	There were no restricted stock awards granted in 2019. Restricted Stock Awards Number of Restricted Stock Awards Outstanding Weighted Average Grant Date Fair Value Outstanding at January 1, 2018 — $ — Awarded 12,420 24.14 Vested (12,420 ) 24.14 Forfeited — — Outstanding at December 31, 2018 — $ —
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary of Stock Units Activity	The following table summarizes performance units at target as of December 31, 2019 and 2018 : Performance Stock Units Number of Performance Stock Units Outstanding Weighted Average Grant Date Fair Value Nonvested at January 1, 2019 37,865 $ 26.77 Awarded 17,968 23.24 Vested and exercised (11,801 ) 23.92 Forfeited (974 ) 28.78 Nonvested at December 31, 2019 43,058 $ 26.01 Performance Stock Units Number of Performance Stock Units Outstanding Weighted Average Grant Date Fair Value Nonvested at January 1, 2018 33,627 $ 25.21 Awarded 23,011 26.30 Vested and exercised (15,017 ) 22.25 Forfeited (3,756 ) 27.94 Nonvested at December 31, 2018 37,865 $ 26.77
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Summary of Stock Units Activity	The following table summarizes restricted stock units activity in 2019 and 2018 : Restricted Stock Units Number of Restricted Stock Units Outstanding Weighted Average Grant Date Fair Value Outstanding at January 1, 2019 80,740 $ 28.24 Granted 50,352 22.45 Vested and exercised (19,411 ) 26.11 Forfeited (5,129 ) 29.28 Outstanding at December 31, 2019 106,552 $ 25.82 Restricted Stock Units Number of Restricted Stock Units Outstanding Weighted Average Grant Date Fair Value Outstanding at January 1, 2018 74,168 $ 26.60 Granted 46,743 28.66 Vested and exercised (26,489 ) 24.36 Forfeited (13,682 ) 28.28 Outstanding at December 31, 2018 80,740 $ 28.24

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Summary of Financial Assets and Financial Liabilities Measured at Fair Value on a Recurring Basis Segregated by the Level of the Valuation Inputs Within the Fair Value Hierarchy Utilized to Measure Fair Value	The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of December 31, 2019 and December 31, 2018 , segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value. December 31, 2019 (in thousands) Level 1 Inputs Level 2 Inputs Level 3 Inputs Total Fair Value Available for sale securities: Mortgage-backed securities: US Government-sponsored enterprises $ — $ 321,969 $ — $ 321,969 US Government agency — 99,661 — 99,661 Private label — 19,533 — 19,533 Obligations of states and political subdivisions thereof — 142,006 — 142,006 Corporate bonds — 80,061 — 80,061 Derivative assets — 6,791 59 6,850 Derivative liabilities — (8,102 ) (84 ) (8,186 ) December 31, 2018 (in thousands) Level 1 Inputs Level 2 Inputs Level 3 Inputs Total Fair Value Available for sale securities: Mortgage-backed securities: US Government-sponsored enterprises $ — $ 404,952 $ — $ 404,952 US Government agency — 110,512 — 110,512 Private label — 20,382 — 20,382 Obligations of states and political subdivisions thereof — 132,265 — 132,265 Corporate bonds — 57,726 — 57,726 Derivative assets — 2,156 8 2,164 Derivative liabilities — (1,353 ) — (1,353 )
Schedule of Changes in Level 3 Assets and Liabilities That Were Measured at Fair Value on a Recurring Basis	The table below presents the changes in Level 3 assets and liabilities that were measured at fair value on a recurring basis in 2019 and 2018 . Assets (Liabilities) (in thousands) Interest Rate Lock Commitments Forward Commitments December 31, 2017 $ (1 ) $ (221 ) Realized loss recognized in non-interest income 9 221 December 31, 2018 8 — Realized gain (loss) recognized in non-interest income 51 (84 ) December 31, 2019 $ 59 $ (84 )
Schedule of Quantitative Information About the Significant Unobservable Inputs Within Level 3	Quantitative information about the significant unobservable inputs within Level 3 non-recurring assets as of December 31, 2019 and December 31, 2018 is as follows: Fair Value Range (Weighted Average) (a) (in thousands, except ratios) December 31, 2019 Valuation Techniques Unobservable Inputs Assets Impaired loans $ 6,137 Fair value of collateral - appraised value Loss severity 0% to 55.00% Appraised value $0 to $6,915 Impaired loans 3,488 Discounted cash flow Discount rate 2.88% to 9.50% Cash flows $22 to $1,002 Capitalized servicing rights 4,301 Discounted cash flow Constant prepayment rate (CPR) 9.95 % Discount rate 10.07 % Other real estate owned 2,236 Fair value of collateral less selling costs Appraised value $2,695 Selling costs 10% to 20% Premises held for sale (b) 1,764 Fair value of asset less selling costs Appraised value $136 to $527 Selling Costs 6.00 % Total $ 17,926 ______________________________________ (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individuals properties. (b) The carrying value of premises held for sale was $1.8 million as of December 31, 2019. There were no premises held for sale as of December 31, 2018. Fair Value Range (Weighted Average) (a) (in thousands, except ratios) December 31, 2018 Valuation Techniques Unobservable Inputs Assets Impaired loans $ 11,676 Fair value of collateral - appraised value Loss severity 0% to 55.00% Appraised value $0 to $6,915 Impaired loans 3,537 Discount cash flow Discount rate 2.88% to 9.50% Cash flows $22 to $1,072 Capitalized servicing rights 4,882 Discounted cash flow Constant prepayment rate (CPR) 8.19 % Discount rate 10.08 % Other real estate owned 2,351 Fair value of collateral less selling costs Appraised value $2,700 Selling costs 12.93 % Total $ 22,446 _____________________________________ (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individuals properties. Quantitative information about the significant unobservable inputs within Level 3 recurring assets and liabilities is as follows: (in thousands, except ratios) Fair Value Valuation Techniques Unobservable Inputs Significant Unobservable Input Value Assets (Liabilities) Interest Rate Lock Commitment $ 59 Historical trend Closing Ratio 90 % Pricing Model Origination Costs, per loan $ 1.7 Forward Commitments (84 ) Quoted prices for similar loans in active markets. Freddie Mac pricing system Pair-off contract price Total $ (25 )
Summary of Applicable Non-Recurring Fair Value Measurements	The following is a summary of applicable non-recurring fair value measurements. December 31, 2019 December 31, 2018 December 31, 2019 Fair Value Measurement Date as of December 31, 2019 (in thousands) Level 3 Inputs Level 3 Total Gains (Losses) Level 3 Inputs Assets Impaired loans $ 9,625 $ 15,213 $ 5,588 December 2019 Capitalized servicing rights 4,301 4,882 — December 2019 Other real estate owned 2,236 2,351 (166 ) August 2019 Premises held for sale 1,764 — — September 2019 Total $ 17,926 $ 22,446 $ 5,422
Summary of Estimated Fair Values, and Related Carrying Amounts, of Financial Instruments	Summary of Estimated Fair Values of Financial Instruments The following table represents estimated fair values, and related carrying amounts of the Company’s financial instruments as of December 31, 2019 and December 31, 2018 . Certain financial instruments and all non-financial instruments are excluded from disclosure requirements. Accordingly, the aggregate fair value amounts presented herein may not necessarily represent the underlying fair value of the Company. December 31, 2019 (in thousands) Carrying Amount Fair Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 56,910 $ 56,910 $ 56,910 $ — $ — Securities available for sale 663,230 663,230 — 663,230 — FHLB bank stock 20,679 20,679 — 20,679 — Net loans 2,625,739 2,634,147 — — 2,634,147 Accrued interest receivable 3,294 3,294 — 3,294 — Cash surrender value of bank-owned life insurance policies 75,863 75,863 — 75,863 — Derivative assets 6,850 6,850 — 6,791 59 Financial Liabilities Non-maturity deposits $ 1,763,116 $ 1,751,481 $ — $ 1,751,481 $ — Time deposits 932,635 932,886 — 932,886 — Other short-term borrowings 44,832 44,831 — 44,831 — Federal Home Loan Bank advances 426,564 425,989 — 425,989 — Subordinated borrowings 59,920 59,920 — 59,920 — Derivative liabilities (8,186 ) (8,186 ) — (8,102 ) (84 ) December 31, 2018 (in thousands) Carrying Fair Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 98,754 $ 98,754 $ 98,754 $ — $ — Securities available for sale 725,837 725,837 — 725,837 — FHLB bank stock 35,659 35,659 — 35,659 — Net loans 2,476,361 2,415,863 — — 2,415,863 Accrued interest receivable 3,533 3,533 — 3,533 — Cash surrender value of bank-owned life insurance policies 73,810 73,810 — 73,810 — Derivative assets 2,164 2,164 — 2,156 8 Financial Liabilities Non-maturity deposits $ 1,550,445 $ 1,476,673 $ — $ 1,476,673 $ — Time deposits 932,793 927,577 — 927,577 — Other short-term borrowings 36,211 36,171 — 36,171 — Federal Home Loan Bank advances 644,611 643,065 — 643,065 — Subordinated borrowings 37,973 37,973 — 37,973 — Junior subordinated borrowings 5,000 3,923 — 3,923 — Derivative liabilities (1,353 ) (1,353 ) — — (1,353 )

REVENUE FROM CONTRACTS WITH C_2

REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following tables present disaggregation of the Company’s non-interest revenue by major business line and timing of revenue recognition for the transfer of products or services: Twelve Months Ended December 31, (in thousands) 2019 2018 Major Products/Service Lines Trust management fees $ 11,098 $ 11,017 Financial services fees 966 968 Interchange fees 4,899 4,434 Customer deposit fees 4,281 3,800 Other customer service fees 946 1,304 Total $ 22,190 $ 21,523 Twelve Months Ended December 31, (in thousands) 2019 2018 Timing of Revenue Recognition Products and services transferred at a point in time $ 10,748 $ 9,766 Products and services transferred over time 11,442 11,757 Total $ 22,190 $ 21,523
Contract Balances with Customer	The following table provides information about contract assets or receivables and contract liabilities or deferred revenues from contracts with customers. (in thousands) Balance at December 31, 2019 Balance at December 31, 2018 Balances from contracts with customers only: Other Assets $ 1,703 $ 2,866 Other Liabilities 3,114 4,923

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
ROU Assets and Liabilities	The following table presents the consolidated statements of condition classification of the Company’s ROU assets and lease liabilities as of December 31, 2019 : (in thousands) December 31, 2019 Lease Right-of-Use Assets Classification Operating lease right-of-use assets Other assets $ 9,623 Lease Liabilities Operating lease liabilities Other liabilities 9,651
Additional Information Regarding Leases	December 31, 2019 Weighted-average remaining lease term Operating leases 8.96 Weighted-average discount rate Operating leases 3.27 % The following table represents lease costs and other lease information. As the Company elected, for all classes of underlying assets, not to separate lease and non-lease components and instead to account for them as a single lease component, the variable lease cost primarily represents variable payments such as real estate taxes, common area maintenance and utilities. (in thousands) Twelve Months Ended December 31, 2019 Lease Costs Operating lease cost $ 698 Variable lease cost 711 Total lease cost $ 1,409
Future Minimum Payments for Leases	Future minimum payments for operating leases with initial or remaining terms of one year or more as of December 31, 2019 are, as follows: (in thousands) Operating Leases Twelve Months Ended: December 31, 2020 $ 1,194 December 31, 2021 1,199 December 31, 2022 1,222 December 31, 2023 1,219 December 31, 2024 1,190 Thereafter 5,984 Total future minimum lease payments 12,008 Amounts representing interest (2,357 ) Present value of net future minimum lease payments $ 9,651

CONDENSED FINANCIAL STATEMENT_2

CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY (Tables)	12 Months Ended
	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Condensed Balance Sheet	CONDENSED BALANCE SHEETS December 31, (in thousands) 2019 2018 Assets Cash due from Bar Harbor Bank and Trust $ 29,223 $ 9,993 Investment in subsidiaries 427,536 398,821 Premises and equipment 687 687 Other assets 4,586 3,416 Total assets $ 462,032 $ 412,917 Liabilities and Shareholders Equity Subordinated notes $ 59,920 $ 37,973 Accrued expenses 5,705 4,365 Shareholders equity 396,407 370,579 Total Liabilities and shareholders equity $ 462,032 $ 412,917
Condensed Income Statement	CONDENSED STATEMENTS OF INCOME Years Ended December 31, (in thousands) 2019 2018 2017 Income: Dividends from subsidiaries $ 21,734 $ 23,705 $ 13,907 Other 337 31 25 Total income 22,071 23,736 13,932 Interest expense 2,188 2,121 1,857 Non-interest expense 3,208 3,147 2,979 Total expense 5,396 5,268 4,836 Income before taxes and equity in undistributed income of subsidiaries 16,675 18,468 9,096 Income tax benefit (1,100 ) (1,136 ) (1,210 ) Income before equity in undistributed income of subsidiaries 17,775 19,604 10,306 Equity in undistributed income of subsidiaries 4,845 13,333 15,687 Net income $ 22,620 $ 32,937 $ 25,993
Condensed Cash Flow Statement	CONDENSED STATEMENTS OF CASH FLOWS Years Ended December 31, (in thousands) 2019 2018 2017 Cash flows from operating activities: Net income $ 22,620 $ 32,937 $ 25,993 Adjustments to reconcile net income to net cash (used) provided by operating activities: Equity in undistributed income of subsidiaries (4,845 ) (13,333 ) (15,687 ) Other, net (1,040 ) (1,457 ) (1,364 ) Net cash provided by operating activities 16,735 18,147 8,942 Cash flows from investing activities: Acquisitions, net of cash paid — — 1,939 Purchase of securities — (7 ) — Other, net (8,000 ) — — Net cash (used in) provided by investing activities (8,000 ) (7 ) 1,939 Cash flows from financing activities: Proceeds from issuance of subordinated debt 40,000 — — Repayment of subordinated debt (17,000 ) — — Net proceeds from common stock 883 951 1,052 Net proceeds from reissuance of treasury stock (22 ) 686 686 Common stock cash dividends paid (13,366 ) (12,184 ) (11,505 ) Other, net — — (16 ) Net cash provided by (used in) financing activities 10,495 (10,547 ) (9,783 ) Net change in cash and cash equivalents 19,230 7,593 1,098 Cash and cash equivalents at beginning of year 9,993 2,400 1,302 Cash and cash equivalents at end of year $ 29,223 $ 9,993 $ 2,400

QUARTERLY DATA (UNAUDITED) (Tab

QUARTERLY DATA (UNAUDITED) (Tables)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information	Quarterly results of operations were as follows during 2019 and 2018 : 2019 (in thousands, except per share data) Fourth Quarter Third Quarter Second Quarter First Quarter Interest and dividend income $ 34,117 $ 34,262 $ 33,785 $ 33,227 Interest expense 10,013 11,817 12,289 11,462 Net interest income 24,104 22,445 21,496 21,765 Non-interest income 7,806 7,643 7,453 6,167 Provision for loan losses 538 893 562 324 Non-interest expense 26,803 23,400 20,906 18,624 Income before income taxes 4,569 5,795 7,481 8,984 Income tax expense 362 780 1,364 1,703 Net income $ 4,207 $ 5,015 $ 6,117 $ 7,281 Earnings per share: Basic $ 0.27 $ 0.32 $ 0.39 $ 0.47 Diluted $ 0.27 $ 0.32 $ 0.39 $ 0.47 Weighted average shares outstanding: Basic 15,554 15,547 15,538 15,523 Diluted 15,602 15,581 15,586 15,587 2018 (in thousands, except per share data) Fourth Quarter Third Quarter Second Quarter First Quarter Interest and dividend income $ 32,772 $ 32,184 $ 31,718 $ 30,777 Interest expense 10,508 9,715 8,726 7,619 Net interest income 22,264 22,469 22,992 23,158 Non-interest income 7,450 7,126 7,121 6,238 Provision for loan losses 572 643 770 795 Non-interest expense 20,096 17,906 18,685 18,852 Income before income taxes 9,046 11,046 10,658 9,749 Income tax expense 1,426 2,076 2,123 1,937 Net income $ 7,620 $ 8,970 $ 8,535 $ 7,812 Earnings per share: Basic $ 0.49 $ 0.58 $ 0.55 $ 0.51 Diluted $ 0.49 $ 0.58 $ 0.55 $ 0.50 Weighted average shares outstanding: Basic 15,516 15,503 15,482 15,448 Diluted 15,574 15,580 15,571 15,553

SUMMARY OF SIGNIFICANT ACCOUN_4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ in Thousands	Jan. 01, 2020USD ($)	Feb. 21, 2017	Dec. 31, 2019USD ($)reporting	Jan. 01, 2019USD ($)	Dec. 31, 2018USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Reserve requirements of vault cash and/or deposits, included in cash and equivalents			$ 23,100		$ 15,800
Property, Plant and Equipment [Line Items]
Stockholders' equity note, stock split, conversion ratio		1.5
Number of reporting units | reporting			1
Operating lease right-of-use assets			$ 9,623
Operating lease liabilities			$ 9,651
Premises | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful live of premises and equipment			25 years
Premises | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful live of premises and equipment			39 years
Furniture and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful live of premises and equipment			3 years
Furniture and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful live of premises and equipment			7 years
Accounting Standards Update 2016-02
Property, Plant and Equipment [Line Items]
Operating lease right-of-use assets				$ 9,000
Operating lease liabilities				$ 9,000
Subsequent event | Accounting Standards Update 2016-13 | Minimum
Property, Plant and Equipment [Line Items]
Quantitative impact	$ 4,000
Subsequent event | Accounting Standards Update 2016-13 | Maximum
Property, Plant and Equipment [Line Items]
Quantitative impact	$ 6,000

SECURITIES AVAILABLE FOR SALE -

SECURITIES AVAILABLE FOR SALE - Summary of Securities Available for Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Available-for-sale Securities, Fair Value to Amortized Cost Basis
Amortized Cost	$ 655,888	$ 737,141
Unrealized Gains	11,205	2,871
Unrealized Losses	(3,863)	(14,175)
Fair Value	663,230	725,837
US Government-sponsored enterprises
Available-for-sale Securities, Fair Value to Amortized Cost Basis
Amortized Cost	319,064	413,492
Unrealized Gains	4,985	904
Unrealized Losses	(2,080)	(9,444)
Fair Value	321,969	404,952
US Government agency
Available-for-sale Securities, Fair Value to Amortized Cost Basis
Amortized Cost	98,568	111,938
Unrealized Gains	1,640	509
Unrealized Losses	(547)	(1,935)
Fair Value	99,661	110,512
Private label
Available-for-sale Securities, Fair Value to Amortized Cost Basis
Amortized Cost	20,212	20,353
Unrealized Gains	68	113
Unrealized Losses	(747)	(84)
Fair Value	19,533	20,382
Obligations of states and political subdivisions thereof
Available-for-sale Securities, Fair Value to Amortized Cost Basis
Amortized Cost	139,240	133,260
Unrealized Gains	3,034	1,081
Unrealized Losses	(268)	(2,076)
Fair Value	142,006	132,265
Corporate bonds
Available-for-sale Securities, Fair Value to Amortized Cost Basis
Amortized Cost	78,804	58,098
Unrealized Gains	1,478	264
Unrealized Losses	(221)	(636)
Fair Value	$ 80,061	$ 57,726

SECURITIES AVAILABLE FOR SALE_2

SECURITIES AVAILABLE FOR SALE - Schedule of Maturity of Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Amortized Cost
Within 1 year	$ 0
Over 1 year to 5 years	33,179
Over 5 years to 10 years	57,285
Over 10 years	127,580
Total bonds and obligations	218,044
Mortgage-backed securities	437,844
Amortized Cost	655,888	$ 737,141
Fair Value
Within 1 year	0
Over 1 year to 5 years	34,004
Over 5 years to 10 years	58,138
Over 10 years	129,925
Total bonds and obligations	222,067
Mortgage-backed securities	441,163
Securities available for sale, at fair value	$ 663,230	$ 725,837

SECURITIES AVAILABLE FOR SALE_3

SECURITIES AVAILABLE FOR SALE - Proceeds from the Sale of Securities and Realized Gains and Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Proceeds from Sale of Securities Available for Sale	$ 92,315	$ 29,107	$ 1,599
Realized Gains	993	0	19
Realized Losses	(756)	(924)	0
Net	$ 237	$ (924)	$ 19

SECURITIES AVAILABLE FOR SALE_4

SECURITIES AVAILABLE FOR SALE - Summary of Securities with Unrealized Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Unrealized Losses
Less Than Twelve Months	$ 2,165	$ 517
Over Twelve Months	1,698	13,658
Total	3,863	14,175
Fair Value
Less Than Twelve Months	112,232	50,873
Over Twelve Months	82,201	428,272
Total	194,433	479,145
US Government-sponsored enterprises
Unrealized Losses
Less Than Twelve Months	1,074	155
Over Twelve Months	1,006	9,289
Total	2,080	9,444
Fair Value
Less Than Twelve Months	43,429	19,367
Over Twelve Months	49,712	297,569
Total	93,141	316,936
US Government agency
Unrealized Losses
Less Than Twelve Months	432	16
Over Twelve Months	115	1,919
Total	547	1,935
Fair Value
Less Than Twelve Months	19,717	2,570
Over Twelve Months	9,120	68,266
Total	28,837	70,836
Private label
Unrealized Losses
Less Than Twelve Months	380	79
Over Twelve Months	367	5
Total	747	84
Fair Value
Less Than Twelve Months	9,843	10,393
Over Twelve Months	9,411	47
Total	19,254	10,440
Obligations of states and political subdivisions thereof
Unrealized Losses
Less Than Twelve Months	137	43
Over Twelve Months	131	2,033
Total	268	2,076
Fair Value
Less Than Twelve Months	29,355	6,784
Over Twelve Months	1,682	47,930
Total	31,037	54,714
Corporate bonds
Unrealized Losses
Less Than Twelve Months	142	224
Over Twelve Months	79	412
Total	221	636
Fair Value
Less Than Twelve Months	9,888	11,759
Over Twelve Months	12,276	14,460
Total	$ 22,164	$ 26,219

SECURITIES AVAILABLE FOR SALE_5

SECURITIES AVAILABLE FOR SALE - Securities Pledged for Collateral (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Carrying Value
Financial Instruments Owned and Pledged as Collateral [Line Items]
Securities pledged for deposits	$ 217,009	$ 128,949
Securities pledged for repurchase agreements	96,007	55,656
Securities pledged for other borrowings	157,172	270,252
Total securities pledged	470,188	454,857
Estimated Fair Value
Financial Instruments Owned and Pledged as Collateral [Line Items]
Securities pledged for deposits	220,054	126,649
Securities pledged for repurchase agreements	96,477	54,189
Securities pledged for other borrowings	157,458	265,334
Total securities pledged	$ 473,989	$ 446,172

SECURITIES AVAILABLE FOR SALE_6

SECURITIES AVAILABLE FOR SALE - Securities Impairment (Details) - Securities Available for Sale - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Estimated credit losses as of period start	$ 1,697	$ 1,697	$ 1,697
Reductions for securities paid off during the period	0	0	0
Estimated credit losses at end of the period	$ 1,697	$ 1,697	$ 1,697

SECURITIES AVAILABLE FOR SALE_7

SECURITIES AVAILABLE FOR SALE - Narrative (Details)	12 Months Ended
	Dec. 31, 2019USD ($)security
US Government-sponsored enterprises
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	163
Available for sale securities portfolio, number of securities (security)	684
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses percentage	2.30%
US Government agency
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	49
Available for sale securities portfolio, number of securities (security)	182
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses percentage	1.90%
Private label
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	9
Available for sale securities portfolio, number of securities (security)	19
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses percentage	3.70%
Obligations of states and political subdivisions thereof
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	15
Available for sale securities portfolio, number of securities (security)	217
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses percentage	0.90%
Material underlying credit downgrades | $	$ 0
Corporate bonds
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	7
Available for sale securities portfolio, number of securities (security)	27
Available for sale and held to maturity securities, continuous unrealized loss position, aggregate losses percentage	1.10%

LOANS - Summary of Total Loans

LOANS - Summary of Total Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	$ 2,641,092	$ 2,490,227
Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	1,835,230	1,630,897
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	805,862	859,330
Commercial real estate:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	930,661	826,699
Commercial real estate: | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	697,438	579,734
Commercial real estate: | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	233,223	246,965
Commercial real estate: | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	34,290	26,644
Commercial real estate: | Construction and land development | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	31,387	23,754
Commercial real estate: | Construction and land development | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	2,903	2,890
Commercial real estate: | Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	896,371	800,055
Commercial real estate: | Other commercial real estate | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	666,051	555,980
Commercial real estate: | Other commercial real estate | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	230,320	244,075
Commercial and industrial:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	423,291	404,870
Commercial and industrial: | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	326,570	313,662
Commercial and industrial: | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	96,721	91,208
Commercial and industrial: | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	298,764	287,227
Commercial and industrial: | Commercial | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	239,692	234,757
Commercial and industrial: | Commercial | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	59,072	52,470
Commercial and industrial: | Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	20,224	22,317
Commercial and industrial: | Agricultural | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	20,018	22,317
Commercial and industrial: | Agricultural | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	206	0
Commercial and industrial: | Tax exempt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	104,303	95,326
Commercial and industrial: | Tax exempt | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	66,860	56,588
Commercial and industrial: | Tax exempt | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	37,443	38,738
Total commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	1,353,952	1,231,569
Total commercial loans | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	1,024,008	893,396
Total commercial loans | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	329,944	338,173
Residential real estate:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	1,151,857	1,144,698
Residential real estate: | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	740,687	670,189
Residential real estate: | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	411,170	474,509
Residential real estate: | Residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	1,151,857	1,144,698
Residential real estate: | Residential mortgages | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	740,687	670,189
Residential real estate: | Residential mortgages | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	411,170	474,509
Consumer:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	135,283	113,960
Consumer: | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	70,535	67,312
Consumer: | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	64,748	46,648
Consumer: | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	122,401	103,189
Consumer: | Home equity | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	59,368	57,898
Consumer: | Home equity | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	63,033	45,291
Consumer: | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	12,882	10,771
Consumer: | Other consumer | Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	11,167	9,414
Consumer: | Other consumer | Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross	$ 1,715	$ 1,357

LOANS - Unamortized Net Costs a

LOANS - Unamortized Net Costs and Premiums (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Receivables [Abstract]
Unamortized net loan origination costs	$ 3,603	$ 3,064
Unamortized net premium on purchased loans	(134)	(127)
Total unamortized net costs and premiums	$ 3,469	$ 2,937

LOANS - Narrative (Details)

LOANS - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)modification	Dec. 31, 2018USD ($)modification	Dec. 31, 2017USD ($)modification
Accounts, Notes, Loans and Financing Receivable [Line Items]
Collateral value of pledged loans to Federal Reserve Bank of Boston	$ 144,200
Collateral value of pledged loans for FHLB borrowings	955,700
Loans	$ 2,641,092	$ 2,490,227
Borrower's sustained repayment performance period	6 months
Modifications that subsequently defaulted, number of contracts | modification	0	0	0
Loan portfolio	$ 2,641,092	$ 2,490,227
Servicing loans for participants	497,200	496,500
Contractually specified servicing fees	1,300	1,300	$ 1,200
Residential real estate:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Foreclosed property	2,200	2,400
Total loans held for sale	6,500	168
Loan portfolio	1,151,857	1,144,698
Net gains on sales of loans	493	121
Residential real estate: | Mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Process of foreclosure	810	1,500
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	805,862	859,330
Acquired credit impaired	16,600
Certain loans acquired in transfer not accounted for as debt securities, note balance, net	21,800
Financing receivable not considered impaired at time of acquisition	789,200
Loan portfolio	805,862	859,330
Acquired Loans | Residential real estate:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	411,170	474,509
Loan portfolio	$ 411,170	$ 474,509
Product Line | Loan concentration | Lodging industry
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of loan portfolio	8.60%	9.00%
Loan portfolio	$ 227,000	$ 223,000

LOANS - Accretable Yield Activi

LOANS - Accretable Yield Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 4,377	$ 3,509
Acquisitions	4,391	0
Reclassification from nonaccretable difference for loans with improved cash flows	541	2,240
Changes in expected cash flows that do not affect the nonaccretable difference	0	0
Reclassification to TDR	0	(30)
Accretion	(1,942)	(1,342)
Balance at end of period	$ 7,367	$ 4,377

LOANS - Summary of Past Due Loa

LOANS - Summary of Past Due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Past Due [Line Items]
Total loans	$ 2,641,092	$ 2,490,227
Business Activities Loans
Financing Receivable, Past Due [Line Items]
Total Past Due	15,551	14,439
Current	1,819,679	1,616,458
Total loans	1,835,230	1,630,897
Past Due 90 days and Accruing	50	50
Business Activities Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	8,685	5,260
Business Activities Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	2,969	707
Business Activities Loans | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	3,897	8,472
Business Activities Loans | Commercial real estate:
Financing Receivable, Past Due [Line Items]
Total Past Due	3,642	7,871
Current	693,796	571,863
Total loans	697,438	579,734
Past Due 90 days and Accruing	0	0
Business Activities Loans | Commercial real estate: | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Past Due	258	0
Current	31,129	23,754
Total loans	31,387	23,754
Past Due 90 days and Accruing	0	0
Business Activities Loans | Commercial real estate: | Other commercial real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	3,384	7,871
Current	662,667	548,109
Total loans	666,051	555,980
Past Due 90 days and Accruing	0	0
Business Activities Loans | Commercial real estate: | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	245	1,146
Business Activities Loans | Commercial real estate: | 30-59 Days Past Due | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Past Due	205	0
Business Activities Loans | Commercial real estate: | 30-59 Days Past Due | Other commercial real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	40	1,146
Business Activities Loans | Commercial real estate: | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,587	0
Business Activities Loans | Commercial real estate: | 60-89 Days Past Due | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Past Due	53	0
Business Activities Loans | Commercial real estate: | 60-89 Days Past Due | Other commercial real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	1,534	0
Business Activities Loans | Commercial real estate: | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,810	6,725
Business Activities Loans | Commercial real estate: | 90 Days or Greater Past Due | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Business Activities Loans | Commercial real estate: | 90 Days or Greater Past Due | Other commercial real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	1,810	6,725
Business Activities Loans | Commercial and industrial:
Financing Receivable, Past Due [Line Items]
Total Past Due	1,588	953
Current	324,982	312,709
Total loans	326,570	313,662
Past Due 90 days and Accruing	0	50
Business Activities Loans | Commercial and industrial: | Commercial
Financing Receivable, Past Due [Line Items]
Total Past Due	1,396	857
Current	238,296	233,900
Total loans	239,692	234,757
Past Due 90 days and Accruing	0	50
Business Activities Loans | Commercial and industrial: | Agricultural
Financing Receivable, Past Due [Line Items]
Total Past Due	192	96
Current	19,826	22,221
Total loans	20,018	22,317
Past Due 90 days and Accruing	0	0
Business Activities Loans | Commercial and industrial: | Tax exempt
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Current	66,860	56,588
Total loans	66,860	56,588
Past Due 90 days and Accruing	0	0
Business Activities Loans | Commercial and industrial: | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	514	460
Business Activities Loans | Commercial and industrial: | 30-59 Days Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total Past Due	452	395
Business Activities Loans | Commercial and industrial: | 30-59 Days Past Due | Agricultural
Financing Receivable, Past Due [Line Items]
Total Past Due	62	65
Business Activities Loans | Commercial and industrial: | 30-59 Days Past Due | Tax exempt
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Business Activities Loans | Commercial and industrial: | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	84	66
Business Activities Loans | Commercial and industrial: | 60-89 Days Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total Past Due	50	60
Business Activities Loans | Commercial and industrial: | 60-89 Days Past Due | Agricultural
Financing Receivable, Past Due [Line Items]
Total Past Due	34	6
Business Activities Loans | Commercial and industrial: | 60-89 Days Past Due | Tax exempt
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Business Activities Loans | Commercial and industrial: | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	990	427
Business Activities Loans | Commercial and industrial: | 90 Days or Greater Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total Past Due	894	402
Business Activities Loans | Commercial and industrial: | 90 Days or Greater Past Due | Agricultural
Financing Receivable, Past Due [Line Items]
Total Past Due	96	25
Business Activities Loans | Commercial and industrial: | 90 Days or Greater Past Due | Tax exempt
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Business Activities Loans | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total Past Due	5,230	8,824
Current	1,018,778	884,572
Total loans	1,024,008	893,396
Past Due 90 days and Accruing	0	50
Business Activities Loans | Total commercial loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	759	1,606
Business Activities Loans | Total commercial loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,671	66
Business Activities Loans | Total commercial loans | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	2,800	7,152
Business Activities Loans | Residential real estate:
Financing Receivable, Past Due [Line Items]
Total Past Due	9,204	5,515
Current	731,483	664,674
Total loans	740,687	670,189
Past Due 90 days and Accruing	0	0
Business Activities Loans | Residential real estate: | Residential mortgages
Financing Receivable, Past Due [Line Items]
Total Past Due	9,204	5,515
Current	731,483	664,674
Total loans	740,687	670,189
Past Due 90 days and Accruing	0	0
Business Activities Loans | Residential real estate: | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	7,293	3,565
Business Activities Loans | Residential real estate: | 30-59 Days Past Due | Residential mortgages
Financing Receivable, Past Due [Line Items]
Total Past Due	7,293	3,565
Business Activities Loans | Residential real estate: | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,243	641
Business Activities Loans | Residential real estate: | 60-89 Days Past Due | Residential mortgages
Financing Receivable, Past Due [Line Items]
Total Past Due	1,243	641
Business Activities Loans | Residential real estate: | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	668	1,309
Business Activities Loans | Residential real estate: | 90 Days or Greater Past Due | Residential mortgages
Financing Receivable, Past Due [Line Items]
Total Past Due	668	1,309
Business Activities Loans | Consumer:
Financing Receivable, Past Due [Line Items]
Total Past Due	1,117	100
Current	69,418	67,212
Total loans	70,535	67,312
Past Due 90 days and Accruing	50	0
Business Activities Loans | Consumer: | Home equity
Financing Receivable, Past Due [Line Items]
Total Past Due	1,069	72
Current	58,299	57,826
Total loans	59,368	57,898
Past Due 90 days and Accruing	50	0
Business Activities Loans | Consumer: | Other consumer
Financing Receivable, Past Due [Line Items]
Total Past Due	48	28
Current	11,119	9,386
Total loans	11,167	9,414
Past Due 90 days and Accruing	0	0
Business Activities Loans | Consumer: | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	633	89
Business Activities Loans | Consumer: | 30-59 Days Past Due | Home equity
Financing Receivable, Past Due [Line Items]
Total Past Due	597	72
Business Activities Loans | Consumer: | 30-59 Days Past Due | Other consumer
Financing Receivable, Past Due [Line Items]
Total Past Due	36	17
Business Activities Loans | Consumer: | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	55	0
Business Activities Loans | Consumer: | 60-89 Days Past Due | Home equity
Financing Receivable, Past Due [Line Items]
Total Past Due	43	0
Business Activities Loans | Consumer: | 60-89 Days Past Due | Other consumer
Financing Receivable, Past Due [Line Items]
Total Past Due	12	0
Business Activities Loans | Consumer: | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	429	11
Business Activities Loans | Consumer: | 90 Days or Greater Past Due | Home equity
Financing Receivable, Past Due [Line Items]
Total Past Due	429	0
Business Activities Loans | Consumer: | 90 Days or Greater Past Due | Other consumer
Financing Receivable, Past Due [Line Items]
Total Past Due	0	11
Acquired Loans
Financing Receivable, Past Due [Line Items]
Total Past Due	9,480	7,356
Acquired Credit Impaired	18,553	10,106
Total loans	805,862	859,330
Past Due 90 days and Accruing	217	196
Acquired Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	5,864	4,414
Acquired Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	2,013	379
Acquired Loans | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,603	2,563
Acquired Loans | Commercial real estate:
Financing Receivable, Past Due [Line Items]
Total Past Due	2,517	941
Acquired Credit Impaired	8,673	6,307
Total loans	233,223	246,965
Past Due 90 days and Accruing	0	0
Acquired Loans | Commercial real estate: | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Past Due	12	0
Acquired Credit Impaired	384	164
Total loans	2,903	2,890
Past Due 90 days and Accruing	0	0
Acquired Loans | Commercial real estate: | Other commercial real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	2,505	941
Acquired Credit Impaired	8,289	6,143
Total loans	230,320	244,075
Past Due 90 days and Accruing	0	0
Acquired Loans | Commercial real estate: | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	2,029	631
Acquired Loans | Commercial real estate: | 30-59 Days Past Due | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Commercial real estate: | 30-59 Days Past Due | Other commercial real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	2,029	631
Acquired Loans | Commercial real estate: | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	257	99
Acquired Loans | Commercial real estate: | 60-89 Days Past Due | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Past Due	12	0
Acquired Loans | Commercial real estate: | 60-89 Days Past Due | Other commercial real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	245	99
Acquired Loans | Commercial real estate: | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	231	211
Acquired Loans | Commercial real estate: | 90 Days or Greater Past Due | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Commercial real estate: | 90 Days or Greater Past Due | Other commercial real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	231	211
Acquired Loans | Commercial and industrial:
Financing Receivable, Past Due [Line Items]
Total Past Due	915	669
Acquired Credit Impaired	2,932	679
Total loans	96,721	91,208
Past Due 90 days and Accruing	0	0
Acquired Loans | Commercial and industrial: | Commercial
Financing Receivable, Past Due [Line Items]
Total Past Due	915	669
Acquired Credit Impaired	2,723	679
Total loans	59,072	52,470
Past Due 90 days and Accruing	0	0
Acquired Loans | Commercial and industrial: | Agricultural
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Acquired Credit Impaired	173	0
Total loans	206	0
Past Due 90 days and Accruing	0	0
Acquired Loans | Commercial and industrial: | Tax exempt
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Acquired Credit Impaired	36	0
Total loans	37,443	38,738
Past Due 90 days and Accruing	0	0
Acquired Loans | Commercial and industrial: | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	440	149
Acquired Loans | Commercial and industrial: | 30-59 Days Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total Past Due	440	149
Acquired Loans | Commercial and industrial: | 30-59 Days Past Due | Agricultural
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Commercial and industrial: | 30-59 Days Past Due | Tax exempt
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Commercial and industrial: | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	335	26
Acquired Loans | Commercial and industrial: | 60-89 Days Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total Past Due	335	26
Acquired Loans | Commercial and industrial: | 60-89 Days Past Due | Agricultural
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Commercial and industrial: | 60-89 Days Past Due | Tax exempt
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Commercial and industrial: | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	140	494
Acquired Loans | Commercial and industrial: | 90 Days or Greater Past Due | Commercial
Financing Receivable, Past Due [Line Items]
Total Past Due	140	494
Acquired Loans | Commercial and industrial: | 90 Days or Greater Past Due | Agricultural
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Commercial and industrial: | 90 Days or Greater Past Due | Tax exempt
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Acquired Loans | Total commercial loans
Financing Receivable, Past Due [Line Items]
Total Past Due	3,432	1,610
Acquired Credit Impaired	11,605	6,986
Total loans	329,944	338,173
Past Due 90 days and Accruing	0	0
Acquired Loans | Total commercial loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	2,469	780
Acquired Loans | Total commercial loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	592	125
Acquired Loans | Total commercial loans | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	371	705
Acquired Loans | Residential real estate:
Financing Receivable, Past Due [Line Items]
Total Past Due	5,064	5,465
Acquired Credit Impaired	5,591	3,095
Total loans	411,170	474,509
Past Due 90 days and Accruing	0	189
Acquired Loans | Residential real estate: | Residential mortgages
Financing Receivable, Past Due [Line Items]
Total Past Due	5,064	5,465
Acquired Credit Impaired	5,591	3,095
Total loans	411,170	474,509
Past Due 90 days and Accruing	0	189
Acquired Loans | Residential real estate: | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	3,185	3,419
Acquired Loans | Residential real estate: | 30-59 Days Past Due | Residential mortgages
Financing Receivable, Past Due [Line Items]
Total Past Due	3,185	3,419
Acquired Loans | Residential real estate: | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	864	254
Acquired Loans | Residential real estate: | 60-89 Days Past Due | Residential mortgages
Financing Receivable, Past Due [Line Items]
Total Past Due	864	254
Acquired Loans | Residential real estate: | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,015	1,792
Acquired Loans | Residential real estate: | 90 Days or Greater Past Due | Residential mortgages
Financing Receivable, Past Due [Line Items]
Total Past Due	1,015	1,792
Acquired Loans | Consumer:
Financing Receivable, Past Due [Line Items]
Total Past Due	984	281
Acquired Credit Impaired	1,357	25
Total loans	64,748	46,648
Past Due 90 days and Accruing	217	7
Acquired Loans | Consumer: | Home equity
Financing Receivable, Past Due [Line Items]
Total Past Due	973	264
Acquired Credit Impaired	1,291	22
Total loans	63,033	45,291
Past Due 90 days and Accruing	217	7
Acquired Loans | Consumer: | Other consumer
Financing Receivable, Past Due [Line Items]
Total Past Due	11	17
Acquired Credit Impaired	66	3
Total loans	1,715	1,357
Past Due 90 days and Accruing	0	0
Acquired Loans | Consumer: | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	210	215
Acquired Loans | Consumer: | 30-59 Days Past Due | Home equity
Financing Receivable, Past Due [Line Items]
Total Past Due	208	198
Acquired Loans | Consumer: | 30-59 Days Past Due | Other consumer
Financing Receivable, Past Due [Line Items]
Total Past Due	2	17
Acquired Loans | Consumer: | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	557	0
Acquired Loans | Consumer: | 60-89 Days Past Due | Home equity
Financing Receivable, Past Due [Line Items]
Total Past Due	548	0
Acquired Loans | Consumer: | 60-89 Days Past Due | Other consumer
Financing Receivable, Past Due [Line Items]
Total Past Due	9	0
Acquired Loans | Consumer: | 90 Days or Greater Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	217	66
Acquired Loans | Consumer: | 90 Days or Greater Past Due | Home equity
Financing Receivable, Past Due [Line Items]
Total Past Due	217	66
Acquired Loans | Consumer: | 90 Days or Greater Past Due | Other consumer
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 0	$ 0

LOANS - Summary Information Per

LOANS - Summary Information Pertaining to Non-accrual Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Non-accrual loans
Non-accrual loans	$ 11,550	$ 18,235
Business Activities Loans
Non-accrual loans
Non-accrual loans	8,354	14,111
Acquired Loans
Non-accrual loans
Non-accrual loans	3,196	4,124
Commercial real estate:
Non-accrual loans
Non-accrual loans	3,489	8,156
Commercial real estate: | Business Activities Loans
Non-accrual loans
Non-accrual loans	3,146	7,874
Commercial real estate: | Acquired Loans
Non-accrual loans
Non-accrual loans	343	282
Commercial real estate: | Construction and land development
Non-accrual loans
Non-accrual loans	258	1
Commercial real estate: | Construction and land development | Business Activities Loans
Non-accrual loans
Non-accrual loans	258	1
Commercial real estate: | Construction and land development | Acquired Loans
Non-accrual loans
Non-accrual loans	0	0
Commercial real estate: | Other commercial real estate
Non-accrual loans
Non-accrual loans	3,231	8,155
Commercial real estate: | Other commercial real estate | Business Activities Loans
Non-accrual loans
Non-accrual loans	2,888	7,873
Commercial real estate: | Other commercial real estate | Acquired Loans
Non-accrual loans
Non-accrual loans	343	282
Commercial and industrial:
Non-accrual loans
Non-accrual loans	1,836	2,331
Commercial and industrial: | Business Activities Loans
Non-accrual loans
Non-accrual loans	1,210	1,688
Commercial and industrial: | Acquired Loans
Non-accrual loans
Non-accrual loans	626	643
Commercial and industrial: | Commercial
Non-accrual loans
Non-accrual loans	1,558	2,066
Commercial and industrial: | Commercial | Business Activities Loans
Non-accrual loans
Non-accrual loans	932	1,423
Commercial and industrial: | Commercial | Acquired Loans
Non-accrual loans
Non-accrual loans	626	643
Commercial and industrial: | Agricultural
Non-accrual loans
Non-accrual loans	278	265
Commercial and industrial: | Agricultural | Business Activities Loans
Non-accrual loans
Non-accrual loans	278	265
Commercial and industrial: | Agricultural | Acquired Loans
Non-accrual loans
Non-accrual loans	0	0
Commercial and industrial: | Tax exempt
Non-accrual loans
Non-accrual loans	0	0
Commercial and industrial: | Tax exempt | Business Activities Loans
Non-accrual loans
Non-accrual loans	0	0
Commercial and industrial: | Tax exempt | Acquired Loans
Non-accrual loans
Non-accrual loans	0	0
Total commercial loans
Non-accrual loans
Non-accrual loans	5,325	10,487
Total commercial loans | Business Activities Loans
Non-accrual loans
Non-accrual loans	4,356	9,562
Total commercial loans | Acquired Loans
Non-accrual loans
Non-accrual loans	969	925
Residential real estate:
Non-accrual loans
Non-accrual loans	5,335	7,210
Residential real estate: | Business Activities Loans
Non-accrual loans
Non-accrual loans	3,362	4,213
Residential real estate: | Acquired Loans
Non-accrual loans
Non-accrual loans	1,973	2,997
Residential real estate: | Residential mortgages
Non-accrual loans
Non-accrual loans	5,335	7,210
Residential real estate: | Residential mortgages | Business Activities Loans
Non-accrual loans
Non-accrual loans	3,362	4,213
Residential real estate: | Residential mortgages | Acquired Loans
Non-accrual loans
Non-accrual loans	1,973	2,997
Consumer:
Non-accrual loans
Non-accrual loans	890	538
Consumer: | Business Activities Loans
Non-accrual loans
Non-accrual loans	636	336
Consumer: | Acquired Loans
Non-accrual loans
Non-accrual loans	254	202
Consumer: | Home equity
Non-accrual loans
Non-accrual loans	869	447
Consumer: | Home equity | Business Activities Loans
Non-accrual loans
Non-accrual loans	615	246
Consumer: | Home equity | Acquired Loans
Non-accrual loans
Non-accrual loans	254	201
Consumer: | Other consumer
Non-accrual loans
Non-accrual loans	21	91
Consumer: | Other consumer | Business Activities Loans
Non-accrual loans
Non-accrual loans	21	90
Consumer: | Other consumer | Acquired Loans
Non-accrual loans
Non-accrual loans	$ 0	$ 1

LOANS - Loans Evaluated for Imp

LOANS - Loans Evaluated for Impairment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Loans receivable: balance at end of period
Total	$ 2,641,092	$ 2,490,227
Commercial real estate
Loans receivable: balance at end of period
Total	930,661	826,699
Commercial and industrial
Loans receivable: balance at end of period
Total	423,291	404,870
Residential real estate
Loans receivable: balance at end of period
Total	1,151,857	1,144,698
Consumer
Loans receivable: balance at end of period
Total	135,283	113,960
Business Activities Loans
Loans receivable: balance at end of period
Individually evaluated for impairment	7,950	13,855
Collectively evaluated	1,827,280	1,617,042
Total	1,835,230	1,630,897
Business Activities Loans | Commercial real estate
Loans receivable: balance at end of period
Individually evaluated for impairment	3,964	9,835
Collectively evaluated	693,474	569,899
Total	697,438	579,734
Business Activities Loans | Commercial and industrial
Loans receivable: balance at end of period
Individually evaluated for impairment	1,353	1,445
Collectively evaluated	325,217	312,217
Total	326,570	313,662
Business Activities Loans | Residential real estate
Loans receivable: balance at end of period
Individually evaluated for impairment	2,620	2,562
Collectively evaluated	738,067	667,627
Total	740,687	670,189
Business Activities Loans | Consumer
Loans receivable: balance at end of period
Individually evaluated for impairment	13	13
Collectively evaluated	70,522	67,299
Total	70,535	67,312
Acquired Loans
Loans receivable: balance at end of period
Individually evaluated for impairment	1,675	1,358
Purchased credit impaired	18,553	10,106
Collectively evaluated	785,634	847,866
Total	805,862	859,330
Acquired Loans | Commercial real estate
Loans receivable: balance at end of period
Individually evaluated for impairment	258	188
Purchased credit impaired	8,673	6,307
Collectively evaluated	224,292	240,470
Total	233,223	246,965
Acquired Loans | Commercial and industrial
Loans receivable: balance at end of period
Individually evaluated for impairment	385	426
Purchased credit impaired	2,932	679
Collectively evaluated	93,404	90,103
Total	96,721	91,208
Acquired Loans | Residential real estate
Loans receivable: balance at end of period
Individually evaluated for impairment	1,032	744
Purchased credit impaired	5,591	3,095
Collectively evaluated	404,547	470,670
Total	411,170	474,509
Acquired Loans | Consumer
Loans receivable: balance at end of period
Individually evaluated for impairment	0	0
Purchased credit impaired	1,357	25
Collectively evaluated	63,391	46,623
Total	$ 64,748	$ 46,648

LOANS - Summary of Impaired Loa

LOANS - Summary of Impaired Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Business Activities Loans
Recorded Investment
Total	$ 7,950	$ 13,855
Unpaid Principal Balance
Total	8,408	14,124
Related Allowance
With an allowance recorded:	1,452	611
Business Activities Loans | Commercial real estate:
Recorded Investment
Total	3,964	9,835
Unpaid Principal Balance
Total	4,155	9,962
Related Allowance
With an allowance recorded:	1,231	422
Business Activities Loans | Commercial real estate: | Construction and land development
Recorded Investment
With no related allowance:	0	0
With an allowance recorded:	258	1
Unpaid Principal Balance
With no related allowance:	0	0
With an allowance recorded:	258	1
Related Allowance
With an allowance recorded:	205	1
Business Activities Loans | Commercial real estate: | Other commercial real estate
Recorded Investment
With no related allowance:	1,911	8,209
With an allowance recorded:	1,795	1,625
Unpaid Principal Balance
With no related allowance:	1,957	8,301
With an allowance recorded:	1,940	1,660
Related Allowance
With an allowance recorded:	1,026	421
Business Activities Loans | Commercial and industrial:
Recorded Investment
Total	1,353	1,445
Unpaid Principal Balance
Total	1,423	1,524
Related Allowance
With an allowance recorded:	164	78
Business Activities Loans | Commercial and industrial: | Commercial
Recorded Investment
With no related allowance:	710	649
With an allowance recorded:	282	796
Unpaid Principal Balance
With no related allowance:	773	669
With an allowance recorded:	289	855
Related Allowance
With an allowance recorded:	164	78
Business Activities Loans | Commercial and industrial: | Agricultural
Recorded Investment
With no related allowance:	361	0
With an allowance recorded:	0	0
Unpaid Principal Balance
With no related allowance:	361	0
With an allowance recorded:	0	0
Related Allowance
With an allowance recorded:	0	0
Business Activities Loans | Commercial and industrial: | Tax exempt
Recorded Investment
With no related allowance:	0	0
With an allowance recorded:	0	0
Unpaid Principal Balance
With no related allowance:	0	0
With an allowance recorded:	0	0
Related Allowance
With an allowance recorded:	0	0
Business Activities Loans | Residential real estate:
Recorded Investment
Total	2,620	2,562
Unpaid Principal Balance
Total	2,817	2,625
Related Allowance
With an allowance recorded:	57	111
Business Activities Loans | Residential real estate: | Residential mortgages
Recorded Investment
With no related allowance:	2,067	1,671
With an allowance recorded:	553	891
Unpaid Principal Balance
With no related allowance:	2,227	1,709
With an allowance recorded:	590	916
Related Allowance
With an allowance recorded:	57	111
Business Activities Loans | Consumer:
Recorded Investment
Total	13	13
Unpaid Principal Balance
Total	13	13
Related Allowance
With an allowance recorded:	0	0
Business Activities Loans | Consumer: | Home equity
Recorded Investment
With no related allowance:	0	0
With an allowance recorded:	13	13
Unpaid Principal Balance
With no related allowance:	0	0
With an allowance recorded:	13	13
Related Allowance
With an allowance recorded:	0	0
Business Activities Loans | Consumer: | Other consumer
Recorded Investment
With no related allowance:	0	0
With an allowance recorded:	0	0
Unpaid Principal Balance
With no related allowance:	0	0
With an allowance recorded:	0	0
Related Allowance
With an allowance recorded:	0	0
Acquired Loans
Recorded Investment
Total	1,675	1,358
Unpaid Principal Balance
Total	2,053	1,600
Related Allowance
With an allowance recorded:	61	41
Acquired Loans | Commercial real estate:
Recorded Investment
Total	258	188
Unpaid Principal Balance
Total	258	187
Related Allowance
With an allowance recorded:	12	0
Acquired Loans | Commercial real estate: | Construction and land development
Recorded Investment
With no related allowance:	0	0
With an allowance recorded:	0	0
Unpaid Principal Balance
With no related allowance:	0	0
With an allowance recorded:	0	0
Related Allowance
With an allowance recorded:	0	0
Acquired Loans | Commercial real estate: | Other commercial real estate
Recorded Investment
With no related allowance:	90	188
With an allowance recorded:	168	0
Unpaid Principal Balance
With no related allowance:	90	187
With an allowance recorded:	168	0
Related Allowance
With an allowance recorded:	12	0
Acquired Loans | Commercial and industrial:
Recorded Investment
Total	385	426
Unpaid Principal Balance
Total	481	510
Related Allowance
With an allowance recorded:	0	0
Acquired Loans | Commercial and industrial: | Commercial
Recorded Investment
With no related allowance:	385	426
With an allowance recorded:	0
Unpaid Principal Balance
With no related allowance:	481	510
With an allowance recorded:	0	0
Related Allowance
With an allowance recorded:	0	0
Acquired Loans | Commercial and industrial: | Agricultural
Recorded Investment
With no related allowance:	0	0
With an allowance recorded:	0	0
Unpaid Principal Balance
With no related allowance:	0	0
With an allowance recorded:	0	0
Related Allowance
With an allowance recorded:	0	0
Acquired Loans | Commercial and industrial: | Tax exempt
Recorded Investment
With no related allowance:	0	0
With an allowance recorded:	0	0
Unpaid Principal Balance
With no related allowance:	0	0
With an allowance recorded:	0	0
Related Allowance
With an allowance recorded:	0	0
Acquired Loans | Residential real estate:
Recorded Investment
Total	1,032	744
Unpaid Principal Balance
Total	1,314	903
Related Allowance
With an allowance recorded:	49	41
Acquired Loans | Residential real estate: | Residential mortgages
Recorded Investment
With no related allowance:	678	375
With an allowance recorded:	354	369
Unpaid Principal Balance
With no related allowance:	938	524
With an allowance recorded:	376	379
Related Allowance
With an allowance recorded:	49	41
Acquired Loans | Consumer:
Recorded Investment
Total	0	0
Unpaid Principal Balance
Total	0	0
Related Allowance
With an allowance recorded:	0	0
Acquired Loans | Consumer: | Home equity
Recorded Investment
With no related allowance:	0	0
With an allowance recorded:	0	0
Unpaid Principal Balance
With no related allowance:	0	0
With an allowance recorded:	0	0
Related Allowance
With an allowance recorded:	0	0
Acquired Loans | Consumer: | Other consumer
Recorded Investment
With no related allowance:	0	0
With an allowance recorded:	0	0
Unpaid Principal Balance
With no related allowance:	0	0
With an allowance recorded:	0	0
Related Allowance
With an allowance recorded:	$ 0	$ 0

LOANS - Average Recorded Invest

LOANS - Average Recorded Investment and Interest Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Business Activities Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	$ 10,893	$ 11,920
Interest Income Recognized	115	135
Business Activities Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	7,227	8,019
Interest Income Recognized	56	77
Business Activities Loans | Commercial real estate | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	0
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment, with related allowance	56	1
Cash basis interest income recognized, with related allowance	1	0
Business Activities Loans | Commercial real estate | Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	5,434	6,878
Cash basis interest income recognized, with no related allowance	55	77
Recorded investment, with related allowance	1,737	1,140
Cash basis interest income recognized, with related allowance	0	0
Business Activities Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	1,024	1,369
Interest Income Recognized	5	9
Business Activities Loans | Commercial and industrial | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	871	634
Cash basis interest income recognized, with no related allowance	5	9
Recorded investment, with related allowance	153	735
Cash basis interest income recognized, with related allowance	0	0
Business Activities Loans | Commercial and industrial | Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	0
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment, with related allowance	0	0
Cash basis interest income recognized, with related allowance	0	0
Business Activities Loans | Commercial and industrial | Tax exempt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	0
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment, with related allowance	0	0
Cash basis interest income recognized, with related allowance	0	0
Business Activities Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	2,629	2,519
Interest Income Recognized	54	48
Business Activities Loans | Residential real estate | Residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	2,089	1,693
Cash basis interest income recognized, with no related allowance	47	39
Recorded investment, with related allowance	540	826
Cash basis interest income recognized, with related allowance	7	9
Business Activities Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	13	13
Interest Income Recognized	0	1
Business Activities Loans | Consumer | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	0
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment, with related allowance	13	13
Cash basis interest income recognized, with related allowance	0	1
Business Activities Loans | Consumer | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	0
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment, with related allowance	0	0
Cash basis interest income recognized, with related allowance	0	0
Acquired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	1,654	1,213
Interest Income Recognized	0	5
Acquired Loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	212	112
Interest Income Recognized	0	1
Acquired Loans | Commercial real estate | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	0
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment, with related allowance	0	0
Cash basis interest income recognized, with related allowance	0	0
Acquired Loans | Commercial real estate | Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	89	112
Cash basis interest income recognized, with no related allowance	0	1
Recorded investment, with related allowance	123	0
Cash basis interest income recognized, with related allowance	0	0
Acquired Loans | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	429	441
Interest Income Recognized	0	1
Acquired Loans | Commercial and industrial | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	429	441
Cash basis interest income recognized, with no related allowance	0	1
Recorded investment, with related allowance	0	0
Cash basis interest income recognized, with related allowance	0	0
Acquired Loans | Commercial and industrial | Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	0
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment, with related allowance	0	0
Cash basis interest income recognized, with related allowance	0	0
Acquired Loans | Commercial and industrial | Tax exempt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	0
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment, with related allowance	0	0
Cash basis interest income recognized, with related allowance	0	0
Acquired Loans | Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	1,013	660
Interest Income Recognized	0	3
Acquired Loans | Residential real estate | Residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	652	442
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment, with related allowance	361	218
Cash basis interest income recognized, with related allowance	0	3
Acquired Loans | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	0	0
Interest Income Recognized	0	0
Acquired Loans | Consumer | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	0
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment, with related allowance	0	0
Cash basis interest income recognized, with related allowance	0	0
Acquired Loans | Consumer | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment, with no related allowance	0	0
Cash basis interest income recognized, with no related allowance	0	0
Recorded investment, with related allowance	0	0
Cash basis interest income recognized, with related allowance	$ 0	$ 0

LOANS - Recorded Investment and

LOANS - Recorded Investment and Number of Modifications (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)modification	Dec. 31, 2018USD ($)modification	Dec. 31, 2017USD ($)modification
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	31	41	18
Pre-Modification Outstanding Recorded Investment	$ 2,923	$ 6,081	$ 1,713
Post-Modification Outstanding Recorded Investment	2,630	4,914	1,504
Individually evaluated for impairment	$ 69	$ 354	$ 0
Commercial real estate: | Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 1
Post-Modification Outstanding Recorded Investment	0	1
Individually evaluated for impairment	$ 0	$ 1
Commercial real estate: | Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	10	9	6
Pre-Modification Outstanding Recorded Investment	$ 630	$ 1,896	$ 388
Post-Modification Outstanding Recorded Investment	529	1,564	222
Individually evaluated for impairment	$ 69	$ 153	$ 0
Commercial and industrial | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	7	7	6
Pre-Modification Outstanding Recorded Investment	$ 366	$ 556	$ 563
Post-Modification Outstanding Recorded Investment	271	486	545
Individually evaluated for impairment	$ 0	$ 55	$ 0
Commercial and industrial | Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	2	1	1
Pre-Modification Outstanding Recorded Investment	$ 500	$ 167	$ 19
Post-Modification Outstanding Recorded Investment	503	0	18
Individually evaluated for impairment	$ 0	$ 0	$ 0
Commercial and industrial | Tax exempt
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0
Pre-Modification Outstanding Recorded Investment	$ 0
Post-Modification Outstanding Recorded Investment	0
Individually evaluated for impairment	$ 0
Residential real estate | Residential mortgages
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	12	19	3
Pre-Modification Outstanding Recorded Investment	$ 1,427	$ 3,348	$ 692
Post-Modification Outstanding Recorded Investment	1,327	2,752	670
Individually evaluated for impairment	$ 0	$ 145	$ 0
Consumer | Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0	1	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 100	$ 13
Post-Modification Outstanding Recorded Investment	0	100	13
Individually evaluated for impairment	$ 0	$ 0	$ 0
Consumer | Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0	3	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 13	$ 38
Post-Modification Outstanding Recorded Investment	0	11	36
Individually evaluated for impairment	$ 0	$ 0	$ 0
Interest rate and maturity concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	2	1	6
Post-Modification Outstanding Recorded Investment	$ 73	$ 16	$ 725
Amortization and maturity concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	4	1	6
Post-Modification Outstanding Recorded Investment	$ 273	$ 286	$ 490
Amortization concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0	0	1
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 94
Amortization, interest rate and maturity concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	5	0	1
Post-Modification Outstanding Recorded Investment	$ 539	$ 0	$ 36
Amortization and interest rate concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0	0	0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Forbearance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	5	3	0
Post-Modification Outstanding Recorded Investment	$ 346	$ 271	$ 0
Forbearance and interest only payments
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	7	6	0
Post-Modification Outstanding Recorded Investment	$ 692	$ 121	$ 0
Forbearance and interest rate concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0	1	0
Post-Modification Outstanding Recorded Investment	$ 0	$ 49	$ 0
Forbearance and maturity concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	4	20	0
Post-Modification Outstanding Recorded Investment	$ 472	$ 2,030	$ 0
Maturity concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0	2	0
Post-Modification Outstanding Recorded Investment	$ 0	$ 440	$ 0
Restructure without concession
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0	5	0
Post-Modification Outstanding Recorded Investment	$ 0	$ 1,419	$ 0
Court ordered
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	0	0	0
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Modifications (in modification) | modification	4	2	4
Post-Modification Outstanding Recorded Investment	$ 235	$ 282	$ 159

LOANS - Loans to Related Partie

LOANS - Loans to Related Parties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Loans and Leases Receivable, Related Parties [Roll Forward]
Beginning balance	$ 8,395	$ 10,487
Changes in composition	(302)	0
New Loans	242	0
Less: repayments	(126)	(2,092)
Ending balance	$ 8,209	$ 8,395

LOANS - Servicing Rights Activi

LOANS - Servicing Rights Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Servicing Asset at Amortized Cost, Balance [Roll Forward]
Balance at beginning of year	$ 3,086	$ 3,232
Acquired	0	0
Additions	160	99
Amortization	(245)	(245)
Balance at end of year	$ 3,001	$ 3,086

ALLOWANCE FOR LOAN LOSSES - All

ALLOWANCE FOR LOAN LOSSES - Allowance Activity (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for loan losses
Loan relationships having aggregate balances in excess of threshold with potential credit weakness												$ 150
Activity in the allowance for loan losses
Balance at beginning of period				$ 13,866					$ 13,866
Provision/(releases) for loan losses	$ 538	$ 893	$ 562	324	$ 572	$ 643	$ 770	$ 795	2,317	$ 2,780	$ 2,788
Balance at end of period	15,353				13,866				15,353	13,866
Allowance For Loan Losses
Individually evaluated for impairment												69	$ 354	$ 0
Total	15,353			13,866	13,866				15,353	13,866		15,353	13,866
Business Activities Loans
Activity in the allowance for loan losses
Balance at beginning of period				13,581				12,153	13,581	12,153	10,419
Charged-off loans									(885)	(1,382)	(701)
Recoveries on charged-off loans									320	535	143
Provision/(releases) for loan losses									2,041	2,275	2,292
Balance at end of period	15,057				13,581				15,057	13,581	12,153
Allowance For Loan Losses
Individually evaluated for impairment												1,452	611	459
Collectively evaluated												13,605	12,970	11,694
Total	15,057			13,581	13,581			12,153	15,057	13,581	12,153	15,057	13,581	12,153
Business Activities Loans | Commercial real estate
Activity in the allowance for loan losses
Balance at beginning of period				6,811				6,037	6,811	6,037	5,145
Charged-off loans									(212)	(417)	(124)
Recoveries on charged-off loans									194	275	49
Provision/(releases) for loan losses									875	916	967
Balance at end of period	7,668				6,811				7,668	6,811	6,037
Allowance For Loan Losses
Individually evaluated for impairment												1,231	422	447
Collectively evaluated												6,437	6,389	5,590
Total	7,668			6,811	6,811			6,037	7,668	6,811	6,037	7,668	6,811	6,037
Business Activities Loans | Commercial and industrial
Activity in the allowance for loan losses
Balance at beginning of period				2,380				2,373	2,380	2,373	1,952
Charged-off loans									(336)	(111)	(189)
Recoveries on charged-off loans									65	76	11
Provision/(releases) for loan losses									1,499	42	599
Balance at end of period	3,608				2,380				3,608	2,380	2,373
Allowance For Loan Losses
Individually evaluated for impairment												164	78	3
Collectively evaluated												3,444	2,302	2,370
Total	3,608			2,380	2,380			2,373	3,608	2,380	2,373	3,608	2,380	2,373
Business Activities Loans | Residential real estate
Activity in the allowance for loan losses
Balance at beginning of period				3,982				3,357	3,982	3,357	2,721
Charged-off loans									(109)	(225)	(226)
Recoveries on charged-off loans									55	166	65
Provision/(releases) for loan losses									(526)	684	797
Balance at end of period	3,402				3,982				3,402	3,982	3,357
Allowance For Loan Losses
Individually evaluated for impairment												57	111	9
Collectively evaluated												3,345	3,871	3,348
Total	3,402			3,982	3,982			3,357	3,402	3,982	3,357	3,402	3,982	3,357
Business Activities Loans | Consumer
Activity in the allowance for loan losses
Balance at beginning of period				408				386	408	386	601
Charged-off loans									(228)	(629)	(162)
Recoveries on charged-off loans									6	18	18
Provision/(releases) for loan losses									193	633	(71)
Balance at end of period	379				408				379	408	386
Allowance For Loan Losses
Individually evaluated for impairment												0	0	0
Collectively evaluated												379	408	386
Total	379			408	408			386	379	408	386	379	408	386
Acquired Loans
Activity in the allowance for loan losses
Balance at beginning of period				285				172	285	172	0
Charged-off loans									(268)	(525)	(325)
Recoveries on charged-off loans									3	133	1
Provision/(releases) for loan losses									276	505	496
Balance at end of period	296				285				296	285	172
Allowance For Loan Losses
Individually evaluated for impairment												61	41	0
Collectively evaluated												235	244	172
Total	296			285	285			172	296	285	172	296	285	172
Acquired Loans | Commercial real estate
Activity in the allowance for loan losses
Balance at beginning of period				173				97	173	97	0
Charged-off loans									0	(136)	(151)
Recoveries on charged-off loans									0	43	1
Provision/(releases) for loan losses									(26)	169	247
Balance at end of period	147				173				147	173	97
Allowance For Loan Losses
Individually evaluated for impairment												12	0	0
Collectively evaluated												135	173	97
Total	147			173	173			97	147	173	97	147	173	97
Acquired Loans | Commercial and industrial
Activity in the allowance for loan losses
Balance at beginning of period				35				16	35	16	0
Charged-off loans									(23)	(166)	(18)
Recoveries on charged-off loans									0	7	0
Provision/(releases) for loan losses									(6)	178	34
Balance at end of period	6				35				6	35	16
Allowance For Loan Losses
Individually evaluated for impairment												0	0	0
Collectively evaluated												6	35	16
Total	6			35	35			16	6	35	16	6	35	16
Acquired Loans | Residential real estate
Activity in the allowance for loan losses
Balance at beginning of period				77				59	77	59	0
Charged-off loans									(240)	(158)	(29)
Recoveries on charged-off loans									0	0	0
Provision/(releases) for loan losses									306	176	88
Balance at end of period	143				77				143	77	59
Allowance For Loan Losses
Individually evaluated for impairment												49	41	0
Collectively evaluated												94	36	59
Total	143			77	77			59	143	77	59	143	77	59
Acquired Loans | Consumer
Activity in the allowance for loan losses
Balance at beginning of period				0				0	0	0	0
Charged-off loans									(5)	(65)	(127)
Recoveries on charged-off loans									3	83	0
Provision/(releases) for loan losses									2	(18)	127
Balance at end of period	0				0				0	0	0
Allowance For Loan Losses
Individually evaluated for impairment												0	0	0
Collectively evaluated												0	0	0
Total	$ 0			$ 0	$ 0			$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0

ALLOWANCE FOR LOAN LOSSES - Loa

ALLOWANCE FOR LOAN LOSSES - Loans by Credit Risk Rating (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Credit quality information
Total loans	$ 2,641,092	$ 2,490,227
Special mention
Credit quality information
Total loans	16,230	21,736
Substandard
Credit quality information
Total loans	39,442	15,797
Doubtful
Credit quality information
Total loans	0	0
Non Accrual
Credit quality information
Total loans	11,550	18,235
Total classified
Credit quality information
Total loans	50,992	34,032
Total Criticized
Credit quality information
Total loans	67,222	55,768
Acquired Loans
Credit quality information
Total loans	805,862	859,330
Acquired Loans | Special mention
Credit quality information
Total loans	7,705	6,399
Acquired Loans | Substandard
Credit quality information
Total loans	13,387	7,987
Acquired Loans | Doubtful
Credit quality information
Total loans	0	0
Acquired Loans | Non Accrual
Credit quality information
Total loans	3,196	4,124
Acquired Loans | Total classified
Credit quality information
Total loans	16,583	12,111
Acquired Loans | Total Criticized
Credit quality information
Total loans	24,288	18,510
Acquired Loans | Residential Real Estate And Consumer
Credit quality information
Financing receivable, net	475,918	521,157
Acquired Loans | Residential Real Estate And Consumer | Residential mortgages
Credit quality information
Financing receivable, net	411,170	474,509
Acquired Loans | Residential Real Estate And Consumer | Home equity
Credit quality information
Financing receivable, net	63,033	45,291
Acquired Loans | Residential Real Estate And Consumer | Other consumer
Credit quality information
Financing receivable, net	1,715	1,357
Acquired Loans | Commercial real estate
Credit quality information
Total loans	233,223	246,965
Acquired Loans | Commercial real estate | Pass
Credit quality information
Total loans	220,903	239,019
Acquired Loans | Commercial real estate | Special mention
Credit quality information
Total loans	2,273	1,574
Acquired Loans | Commercial real estate | Substandard
Credit quality information
Total loans	9,879	6,273
Acquired Loans | Commercial real estate | Doubtful
Credit quality information
Total loans	168	99
Acquired Loans | Commercial real estate | Construction and land development
Credit quality information
Total loans	2,903	2,890
Acquired Loans | Commercial real estate | Construction and land development | Pass
Credit quality information
Total loans	2,412	2,626
Acquired Loans | Commercial real estate | Construction and land development | Special mention
Credit quality information
Total loans	12	0
Acquired Loans | Commercial real estate | Construction and land development | Substandard
Credit quality information
Total loans	479	264
Acquired Loans | Commercial real estate | Construction and land development | Doubtful
Credit quality information
Total loans	0	0
Acquired Loans | Commercial real estate | Other commercial real estate
Credit quality information
Total loans	230,320	244,075
Acquired Loans | Commercial real estate | Other commercial real estate | Pass
Credit quality information
Total loans	218,491	236,393
Acquired Loans | Commercial real estate | Other commercial real estate | Special mention
Credit quality information
Total loans	2,261	1,574
Acquired Loans | Commercial real estate | Other commercial real estate | Substandard
Credit quality information
Total loans	9,400	6,009
Acquired Loans | Commercial real estate | Other commercial real estate | Doubtful
Credit quality information
Total loans	168	99
Acquired Loans | Commercial and industrial
Credit quality information
Total loans	96,721	91,208
Acquired Loans | Commercial and industrial | Pass
Credit quality information
Total loans	88,649	84,858
Acquired Loans | Commercial and industrial | Special mention
Credit quality information
Total loans	5,432	4,825
Acquired Loans | Commercial and industrial | Substandard
Credit quality information
Total loans	2,299	1,222
Acquired Loans | Commercial and industrial | Doubtful
Credit quality information
Total loans	341	303
Acquired Loans | Commercial and industrial | Commercial
Credit quality information
Total loans	59,072	52,470
Acquired Loans | Commercial and industrial | Commercial | Pass
Credit quality information
Total loans	51,184	46,120
Acquired Loans | Commercial and industrial | Commercial | Special mention
Credit quality information
Total loans	5,432	4,825
Acquired Loans | Commercial and industrial | Commercial | Substandard
Credit quality information
Total loans	2,115	1,222
Acquired Loans | Commercial and industrial | Commercial | Doubtful
Credit quality information
Total loans	341	303
Acquired Loans | Commercial and industrial | Agricultural
Credit quality information
Total loans	206	0
Acquired Loans | Commercial and industrial | Agricultural | Pass
Credit quality information
Total loans	58	0
Acquired Loans | Commercial and industrial | Agricultural | Special mention
Credit quality information
Total loans	0	0
Acquired Loans | Commercial and industrial | Agricultural | Substandard
Credit quality information
Total loans	148	0
Acquired Loans | Commercial and industrial | Agricultural | Doubtful
Credit quality information
Total loans	0	0
Acquired Loans | Commercial and industrial | Tax exempt
Credit quality information
Total loans	37,443	38,738
Acquired Loans | Commercial and industrial | Tax exempt | Pass
Credit quality information
Total loans	37,407	38,738
Acquired Loans | Commercial and industrial | Tax exempt | Special mention
Credit quality information
Total loans	0	0
Acquired Loans | Commercial and industrial | Tax exempt | Substandard
Credit quality information
Total loans	36	0
Acquired Loans | Commercial and industrial | Tax exempt | Doubtful
Credit quality information
Total loans	0	0
Business Activities Loans
Credit quality information
Total loans	1,835,230	1,630,897
Business Activities Loans | Special mention
Credit quality information
Total loans	8,525	15,337
Business Activities Loans | Substandard
Credit quality information
Total loans	26,055	7,810
Business Activities Loans | Doubtful
Credit quality information
Total loans	0	0
Business Activities Loans | Non Accrual
Credit quality information
Total loans	8,354	14,111
Business Activities Loans | Total classified
Credit quality information
Total loans	34,409	21,921
Business Activities Loans | Total Criticized
Credit quality information
Total loans	42,934	37,258
Business Activities Loans | Residential Real Estate And Consumer
Credit quality information
Financing receivable, net	811,222	737,501
Business Activities Loans | Residential Real Estate And Consumer | Residential mortgages
Credit quality information
Financing receivable, net	740,687	670,189
Business Activities Loans | Residential Real Estate And Consumer | Home equity
Credit quality information
Financing receivable, net	59,368	57,898
Business Activities Loans | Residential Real Estate And Consumer | Other consumer
Credit quality information
Financing receivable, net	11,167	9,414
Business Activities Loans | Commercial real estate
Credit quality information
Total loans	697,438	579,734
Business Activities Loans | Commercial real estate | Pass
Credit quality information
Total loans	677,943	556,066
Business Activities Loans | Commercial real estate | Special mention
Credit quality information
Total loans	5,483	8,392
Business Activities Loans | Commercial real estate | Substandard
Credit quality information
Total loans	12,304	13,914
Business Activities Loans | Commercial real estate | Doubtful
Credit quality information
Total loans	1,708	1,362
Business Activities Loans | Commercial real estate | Construction and land development
Credit quality information
Total loans	31,387	23,754
Business Activities Loans | Commercial real estate | Construction and land development | Pass
Credit quality information
Total loans	31,057	23,680
Business Activities Loans | Commercial real estate | Construction and land development | Special mention
Credit quality information
Total loans	0	73
Business Activities Loans | Commercial real estate | Construction and land development | Substandard
Credit quality information
Total loans	330	0
Business Activities Loans | Commercial real estate | Construction and land development | Doubtful
Credit quality information
Total loans	0	1
Business Activities Loans | Commercial real estate | Other commercial real estate
Credit quality information
Total loans	666,051	555,980
Business Activities Loans | Commercial real estate | Other commercial real estate | Pass
Credit quality information
Total loans	646,886	532,386
Business Activities Loans | Commercial real estate | Other commercial real estate | Special mention
Credit quality information
Total loans	5,483	8,319
Business Activities Loans | Commercial real estate | Other commercial real estate | Substandard
Credit quality information
Total loans	11,974	13,914
Business Activities Loans | Commercial real estate | Other commercial real estate | Doubtful
Credit quality information
Total loans	1,708	1,361
Business Activities Loans | Commercial and industrial
Credit quality information
Total loans	326,570	313,662
Business Activities Loans | Commercial and industrial | Pass
Credit quality information
Total loans	307,129	304,621
Business Activities Loans | Commercial and industrial | Special mention
Credit quality information
Total loans	3,042	6,945
Business Activities Loans | Commercial and industrial | Substandard
Credit quality information
Total loans	15,646	1,346
Business Activities Loans | Commercial and industrial | Doubtful
Credit quality information
Total loans	753	750
Business Activities Loans | Commercial and industrial | Commercial
Credit quality information
Total loans	239,692	234,757
Business Activities Loans | Commercial and industrial | Commercial | Pass
Credit quality information
Total loans	221,329	226,353
Business Activities Loans | Commercial and industrial | Commercial | Special mention
Credit quality information
Total loans	2,744	6,730
Business Activities Loans | Commercial and industrial | Commercial | Substandard
Credit quality information
Total loans	14,866	924
Business Activities Loans | Commercial and industrial | Commercial | Doubtful
Credit quality information
Total loans	753	750
Business Activities Loans | Commercial and industrial | Agricultural
Credit quality information
Total loans	20,018	22,317
Business Activities Loans | Commercial and industrial | Agricultural | Pass
Credit quality information
Total loans	18,940	21,680
Business Activities Loans | Commercial and industrial | Agricultural | Special mention
Credit quality information
Total loans	298	215
Business Activities Loans | Commercial and industrial | Agricultural | Substandard
Credit quality information
Total loans	780	422
Business Activities Loans | Commercial and industrial | Agricultural | Doubtful
Credit quality information
Total loans	0	0
Business Activities Loans | Commercial and industrial | Tax exempt
Credit quality information
Total loans	66,860	56,588
Business Activities Loans | Commercial and industrial | Tax exempt | Pass
Credit quality information
Total loans	66,860	56,588
Business Activities Loans | Commercial and industrial | Tax exempt | Special mention
Credit quality information
Total loans	0	0
Business Activities Loans | Commercial and industrial | Tax exempt | Substandard
Credit quality information
Total loans	0	0
Business Activities Loans | Commercial and industrial | Tax exempt | Doubtful
Credit quality information
Total loans	0	0
Performing Financial Instruments | Acquired Loans | Residential Real Estate And Consumer
Credit quality information
Financing receivable, net	472,022	516,943
Performing Financial Instruments | Acquired Loans | Residential Real Estate And Consumer | Residential mortgages
Credit quality information
Financing receivable, net	407,811	470,497
Performing Financial Instruments | Acquired Loans | Residential Real Estate And Consumer | Home equity
Credit quality information
Financing receivable, net	62,504	45,090
Performing Financial Instruments | Acquired Loans | Residential Real Estate And Consumer | Other consumer
Credit quality information
Financing receivable, net	1,707	1,356
Performing Financial Instruments | Business Activities Loans | Residential Real Estate And Consumer
Credit quality information
Financing receivable, net	807,224	732,952
Performing Financial Instruments | Business Activities Loans | Residential Real Estate And Consumer | Residential mortgages
Credit quality information
Financing receivable, net	737,325	665,976
Performing Financial Instruments | Business Activities Loans | Residential Real Estate And Consumer | Home equity
Credit quality information
Financing receivable, net	58,753	57,652
Performing Financial Instruments | Business Activities Loans | Residential Real Estate And Consumer | Other consumer
Credit quality information
Financing receivable, net	11,146	9,324
Nonperforming Financial Instruments | Acquired Loans | Residential Real Estate And Consumer
Credit quality information
Financing receivable, net	3,896	4,214
Nonperforming Financial Instruments | Acquired Loans | Residential Real Estate And Consumer | Residential mortgages
Credit quality information
Financing receivable, net	3,359	4,012
Nonperforming Financial Instruments | Acquired Loans | Residential Real Estate And Consumer | Home equity
Credit quality information
Financing receivable, net	529	201
Nonperforming Financial Instruments | Acquired Loans | Residential Real Estate And Consumer | Other consumer
Credit quality information
Financing receivable, net	8	1
Nonperforming Financial Instruments | Business Activities Loans | Residential Real Estate And Consumer
Credit quality information
Financing receivable, net	3,998	4,549
Nonperforming Financial Instruments | Business Activities Loans | Residential Real Estate And Consumer | Residential mortgages
Credit quality information
Financing receivable, net	3,362	4,213
Nonperforming Financial Instruments | Business Activities Loans | Residential Real Estate And Consumer | Home equity
Credit quality information
Financing receivable, net	615	246
Nonperforming Financial Instruments | Business Activities Loans | Residential Real Estate And Consumer | Other consumer
Credit quality information
Financing receivable, net	$ 21	$ 90

PREMISES AND EQUIPMENT (Details

PREMISES AND EQUIPMENT (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 70,964,000	$ 64,868,000
Accumulated depreciation	(19,759,000)	(16,064,000)
Premises and equipment, net	51,205,000	48,804,000
Depreciation expense	4,100,000	3,700,000	$ 3,500,000
Premises held for sale	1,800,000	0
Loss recognized on assets transferred	1,000,000
Cash and cash equivalents at end of year	56,910,000	98,754,000	$ 90,685,000	$ 8,439,000
Impairment charges	0
Land
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	5,028,000	4,837,000
Buildings and improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 52,363,000	50,933,000
Buildings and improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful live of premises and equipment	5 years
Buildings and improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful live of premises and equipment	39 years
Furniture and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 13,573,000	$ 9,098,000
Furniture and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful live of premises and equipment	3 years
Furniture and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful live of premises and equipment	7 years

GOODWILL AND OTHER INTANGIBLE_2

GOODWILL AND OTHER INTANGIBLES - Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Balance at beginning of year	$ 100,085	$ 100,085
Acquisition	18,564	0
Balance at end of year	$ 118,649	$ 100,085

GOODWILL AND OTHER INTANGIBLE_3

GOODWILL AND OTHER INTANGIBLES - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Goodwill, Impairment Loss	$ 0	$ 0
Amortization of intangible assets	$ 861,000	$ 828,000	$ 812,000
Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life	8 years 6 months
Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life	12 years

GOODWILL AND OTHER INTANGIBLE_4

GOODWILL AND OTHER INTANGIBLES - Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 11,548	$ 9,505
Accumulated Amortization	(2,907)	(2,046)
Net Intangible Assets	8,641	7,459
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]
2020	975
2021	932
2022	932
2023	932
2024	932
and thereafter	3,938
Core deposit intangible
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	9,483	8,586
Accumulated Amortization	(2,635)	(1,878)
Net Intangible Assets	6,848	6,708
Customer list and other intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	2,065	919
Accumulated Amortization	(272)	(168)
Net Intangible Assets	$ 1,793	$ 751

DEPOSITS - Schedule of Time Dep

DEPOSITS - Schedule of Time Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deposits [Abstract]
Time less than $100,000	$ 600,747	$ 622,478
Time $100,000 through $250,000	225,505	193,535
Time $250,000 or more	106,383	116,780
Total time deposits	$ 932,635	$ 932,793

DEPOSITS - Maturities by Year (

DEPOSITS - Maturities by Year (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deposits [Abstract]
Within 1 year	$ 555,074	$ 505,313
Over 1 year to 2 years	287,934	258,176
Over 2 years to 3 years	51,444	123,337
Over 3 years to 4 years	31,262	14,494
Over 4 years to 5 years	6,883	31,353
Over 5 years	38	120
Total time deposits	$ 932,635	$ 932,793

DEPOSITS - Narrative (Details)

DEPOSITS - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deposits [Abstract]
Brokered deposits	$ 526.9	$ 466.9
Reciprocal deposits	$ 64.1	$ 52.4

BORROWED FUNDS - Narrative (Det

BORROWED FUNDS - Narrative (Details) - USD ($)	Mar. 30, 2004	Apr. 30, 2008	Dec. 31, 2018	Dec. 31, 2019	Nov. 26, 2019	Oct. 29, 2014
Debt Instrument [Line Items]
Short-term debt			$ 647,894,000	$ 348,118,000
Amount			75,902,000	183,198,000
Financial Guarantee | NHTB Capital Trust III
Debt Instrument [Line Items]
Debentures issued by variable interest entities	$ 20,600,000
Subordinated debt
Debt Instrument [Line Items]
Principal amount of debt issued					$ 40,000,000	$ 17,000,000
Fixed interest rate					4.625%	6.75%
SOFR
Debt Instrument [Line Items]
Fixed interest rate					3.27%
LIBOR | Financial Guarantee
Debt Instrument [Line Items]
Interest rate margin	2.79%
Advances from the FHLB
Debt Instrument [Line Items]
Secured line of credit maintained				1,000,000
Current balance on line of credit			0	0
Short-term debt			611,683,000	303,286,000
Amount			32,929,000	123,278,000
Federal Reserve Bank Advances
Debt Instrument [Line Items]
Secured line of credit maintained				144,210,000
Short-term debt			0	0
Federal Reserve Bank Advances | Unsecured Debt
Debt Instrument [Line Items]
Secured line of credit maintained			50,000,000	50,000,000
Outstanding balance on unused unsecured federal funds line of credit			0	0
Federal Home Loan Bank Certificates and Obligations FHLB Callable Advances
Debt Instrument [Line Items]
Amount				0
Federal Home Loan Bank Certificates and Obligations FHLB Amortizing Advances
Debt Instrument [Line Items]
Amount			330,000	316,000
Subordinated borrowings
Debt Instrument [Line Items]
Amount			$ 37,973,000	$ 59,920,000
Maturity period (in years)		15 years
Principal amount of debt issued		$ 5,000,000			$ 700,000
Subordinated borrowings | LIBOR
Debt Instrument [Line Items]
Interest rate margin		3.45%	6.24%

BORROWED FUNDS - Summary of Bor

BORROWED FUNDS - Summary of Borrowed Funds (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Short-term borrowings
Amount	$ 348,118	$ 647,894
Weighted Average Rate	1.73%	2.39%
Long-term borrowings
Amount	$ 183,198	$ 75,902
Weighted Average Rate	2.87%	3.99%
Total borrowings	$ 531,316	$ 723,796
Weighted Average Rate	2.11%	2.56%
Advances from the FHLB
Short-term borrowings
Amount	$ 303,286	$ 611,683
Weighted Average Rate	1.83%	2.47%
Long-term borrowings
Amount	$ 123,278	$ 32,929
Weighted Average Rate	1.93%	1.86%
Other borrowings
Short-term borrowings
Amount	$ 44,832	$ 36,211
Weighted Average Rate	0.99%	1.09%
Subordinated borrowings
Long-term borrowings
Amount	$ 59,920	$ 37,973
Weighted Average Rate	5.53%	5.58%
Junior subordinated borrowings
Long-term borrowings
Amount	$ 0	$ 5,000
Weighted Average Rate	0.00%	5.96%

BORROWED FUNDS - Summary of Mat

BORROWED FUNDS - Summary of Maturities of FHLBB (Details) - Fixed rate advances $ in Thousands	Dec. 31, 2019USD ($)
Amount
2020	$ 303,286
2021	10,662
2022	104,000
2023	1,000
2024	7,300
2025 and thereafter	316
Total FHLB advances	$ 426,564
Weighted Average Rate
2020	1.83%
2021	2.21%
2022	1.97%
2023	0.00%
2024	1.16%
2025 and thereafter	4.05%
Total FHLB advances	1.85%

EMPLOYEE BENEFIT PLANS - Change

EMPLOYEE BENEFIT PLANS - Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Pension Plans
Change in projected benefit obligation:
Projected benefit obligation at beginning of year	$ 8,009	$ 9,020
Service cost	0	0
Interest cost	331	315
Actuarial loss (gain)	1,068	(771)
Benefits paid	(300)	(291)
Settlements	(182)	(264)
Projected benefit obligation at end of year	8,926	8,009
Change in fair value of plan assets:
Fair value of plan assets at beginning of year	9,990	11,026
Expected return on plan assets	1,570	(481)
Contributions by employer	0	0
Benefits paid	(300)	(291)
Settlements	(182)	(264)
Fair value of plan assets at end of year	11,078	9,990
Overfunded status	(2,152)	(1,981)
Amounts recognized in consolidated balance sheet assets (liabilities)	2,152	1,981
Non-qualified Supplemental Executive Retirement Plan
Change in projected benefit obligation:
Projected benefit obligation at beginning of year	3,033	3,451
Service cost	0	0
Interest cost	103	102
Actuarial loss (gain)	221	(142)
Benefits paid	(378)	(378)
Projected benefit obligation at end of year	2,979	3,033
Change in fair value of plan assets:
Fair value of plan assets at beginning of year	0	0
Contributions by employer	378	378
Benefits paid	(378)	(378)
Fair value of plan assets at end of year	0	0
Overfunded status	2,979	3,033
Amounts recognized in consolidated balance sheet assets (liabilities)	$ (2,979)	$ (3,033)

EMPLOYEE BENEFIT PLANS - Schedu

EMPLOYEE BENEFIT PLANS - Schedule of Net Benefit Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Total recognized in net periodic benefit (credit) cost and other comprehensive (income) loss	$ (162)	$ 24
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Interest cost	331	315
Expected return on plan assets	638	706
Settlement Charge	0	0
Net actuarial loss	145	415
Settlement charge	0	0
Net periodic pension benefit cost (credit)	(307)	(391)
Non-qualified Supplemental Executive Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Interest cost	103	102
Expected return on plan assets	0	0
Net actuarial loss	220	(142)
Amortization of unrecognized actuarial loss	(15)	(29)
Net periodic pension benefit cost (credit)	118	131
Total recognized in net periodic benefit (credit) cost and other comprehensive (income) loss	$ 205	$ (171)

EMPLOYEE BENEFIT PLANS - Sche_2

EMPLOYEE BENEFIT PLANS - Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	$ (145)	$ (415)
Settlement charge	0	0
Prior service cost (credit)	748	333
Total accumulated other comprehensive loss (pre-tax)	893	748
Non-qualified Supplemental Executive Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss (gain)	(220)	142
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Accumulated other comprehensive income at beginning of the year (pre-tax)	414	585
Actuarial loss (gain)	220	(142)
Amortization of actuarial loss	(15)	(29)
Accumulated other comprehensive income at end of year (pre-tax)	$ 619	$ 414

EMPLOYEE BENEFIT PLANS - Narrat

EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Total 401(k) expense	$ 1,100,000	$ 1,000,000	$ 970,000
Split-dollar life insurance agreement
Defined Benefit Plan Disclosure [Line Items]
Accrued liability	834,000	671,000
Salary continuation agreement expense	163,000	57,000	9,000
Net benefit			$ 57,000
Certain prior executives and senior officers | Salary continuation agreement
Defined Benefit Plan Disclosure [Line Items]
Accrued liability	8,100,000	7,300,000
Salary continuation agreement expense	779,000	752,000
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
After tax components of accumulated other comprehensive loss, not yet recognized in net periodic pension cost	684,000
Expected cash contributions	0
Expected amortization from accumulated other comprehensive loss into net periodic pension cost	0
Net benefit	$ (307,000)	(391,000)
Pension Plans | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	49.00%
Pension Plans | Fixed-income securities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	51.00%
Non-qualified Supplemental Executive Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
After tax components of accumulated other comprehensive loss, not yet recognized in net periodic pension cost	$ 474,000
Expected amortization from accumulated other comprehensive loss into net periodic pension cost	42,000
Net benefit	$ 118,000	$ 131,000

EMPLOYEE BENEFIT PLANS - Sche_3

EMPLOYEE BENEFIT PLANS - Schedule of Assumptions Used (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Pension Plans
Projected benefit obligation
Discount rate beginning of year	3.23%	4.23%
Net periodic pension cost
Discount rate	4.23%	3.56%
Long-term rate of return on plan assets	6.50%	6.50%
Non-qualified Supplemental Executive Retirement Plan
Projected benefit obligation
Discount rate beginning of year	2.65%	3.83%	3.13%

EMPLOYEE BENEFIT PLANS - Sche_4

EMPLOYEE BENEFIT PLANS - Schedule of Allocation of Plan Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 11,078	$ 9,990	$ 11,026
Pension Plans | Recurring
Defined Benefit Plan Disclosure [Line Items]
Plan assets	11,069	9,990
Pension Plans | Recurring | Large-cap
Defined Benefit Plan Disclosure [Line Items]
Plan assets	2,144	1,730
Pension Plans | Recurring | Mid-cap
Defined Benefit Plan Disclosure [Line Items]
Plan assets	590	477
Pension Plans | Recurring | Small-cap
Defined Benefit Plan Disclosure [Line Items]
Plan assets	557	469
Pension Plans | Recurring | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1,009	845
Pension Plans | Recurring | Fixed-income - core plus
Defined Benefit Plan Disclosure [Line Items]
Plan assets	4,028	3,945
Pension Plans | Recurring | Intermediate duration
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1,371	1,321
Pension Plans | Recurring | Common stock
Defined Benefit Plan Disclosure [Line Items]
Plan assets	574	506
Pension Plans | Recurring | Common/collective trusts - large-cap
Defined Benefit Plan Disclosure [Line Items]
Plan assets	566	469
Pension Plans | Recurring | Cash equivalents - money market
Defined Benefit Plan Disclosure [Line Items]
Plan assets	230	228
Pension Plans | Level 1 | Recurring
Defined Benefit Plan Disclosure [Line Items]
Plan assets	10,503	9,521
Pension Plans | Level 1 | Recurring | Large-cap
Defined Benefit Plan Disclosure [Line Items]
Plan assets	2,144	1,730
Pension Plans | Level 1 | Recurring | Mid-cap
Defined Benefit Plan Disclosure [Line Items]
Plan assets	590	477
Pension Plans | Level 1 | Recurring | Small-cap
Defined Benefit Plan Disclosure [Line Items]
Plan assets	557	469
Pension Plans | Level 1 | Recurring | International
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1,009	845
Pension Plans | Level 1 | Recurring | Fixed-income - core plus
Defined Benefit Plan Disclosure [Line Items]
Plan assets	4,028	3,945
Pension Plans | Level 1 | Recurring | Intermediate duration
Defined Benefit Plan Disclosure [Line Items]
Plan assets	1,371	1,321
Pension Plans | Level 1 | Recurring | Common stock
Defined Benefit Plan Disclosure [Line Items]
Plan assets	574	506
Pension Plans | Level 1 | Recurring | Common/collective trusts - large-cap
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Pension Plans | Level 1 | Recurring | Cash equivalents - money market
Defined Benefit Plan Disclosure [Line Items]
Plan assets	230	228
Pension Plans | Level 2 | Recurring
Defined Benefit Plan Disclosure [Line Items]
Plan assets	566	469
Pension Plans | Level 2 | Recurring | Large-cap
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Pension Plans | Level 2 | Recurring | Mid-cap
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Pension Plans | Level 2 | Recurring | Small-cap
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Pension Plans | Level 2 | Recurring | Fixed-income - core plus
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Pension Plans | Level 2 | Recurring | Intermediate duration
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Pension Plans | Level 2 | Recurring | Common stock
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Pension Plans | Level 2 | Recurring | Common/collective trusts - large-cap
Defined Benefit Plan Disclosure [Line Items]
Plan assets	566	469
Pension Plans | Level 2 | Recurring | Cash equivalents - money market
Defined Benefit Plan Disclosure [Line Items]
Plan assets	0	0
Non-qualified Supplemental Executive Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Plan assets	$ 0	$ 0	$ 0

EMPLOYEE BENEFIT PLANS - Sche_5

EMPLOYEE BENEFIT PLANS - Schedule of Expected Benefit Payments (Details) $ in Thousands	Dec. 31, 2019USD ($)
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
2020	$ 365
2021	364
2022	383
2023	379
2024	394
2025-2029	2,262
Non-qualified Supplemental Executive Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
2020	293
2021	260
2022	260
2023	260
2024	260
2025-2029	$ 2,027

INCOME TAXES - Narrative (Detai

INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Deferred tax assets, net		$ 3,865	$ 9,514
Remeasurement of net deferred tax asset resulting in additional income tax expense	$ 4,000

INCOME TAXES - Components of In

INCOME TAXES - Components of Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Federal tax expense									$ 2,639	$ 6,775	$ 8,705
State tax expense									550	1,230	1,039
Total current tax expense									3,189	8,005	9,744
Deferred tax expense									1,020	(443)	2,898
Impact of federal tax reform enactment									0	0	3,988
Income Tax Expense (Benefit)	$ 362	$ 780	$ 1,364	$ 1,703	$ 1,426	$ 2,076	$ 2,123	$ 1,937	$ 4,209	$ 7,562	$ 16,630

INCOME TAXES - Effective Income

INCOME TAXES - Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Amount
Statutory tax rate									$ 5,633	$ 8,505	$ 14,918
Increase (decrease) resulting from:
State taxes, net of federal benefit									547	908	986
Tax exempt interest									(1,375)	(1,315)	(2,074)
Federal tax credits									(282)	(125)	(130)
Officers' life insurance									(431)	(382)	(538)
Acquisition costs									0	0	89
Stock-based compensation plans									(20)	(120)	(241)
Impact of federal tax reform enactment									0	0	3,988
Other									137	91	(368)
Income Tax Expense (Benefit)	$ 362	$ 780	$ 1,364	$ 1,703	$ 1,426	$ 2,076	$ 2,123	$ 1,937	$ 4,209	$ 7,562	$ 16,630
Rate
Statutory tax rate									21.00%	21.00%	35.00%
Increase (decrease) resulting from:
State taxes, net of federal benefit									2.04%	2.24%	2.31%
Tax exempt interest									(5.13%)	(3.25%)	(4.87%)
Federal tax credits									(1.05%)	(0.31%)	(0.30%)
Officers' life insurance									(1.61%)	(0.94%)	(1.26%)
Acquisition costs									0.00%	0.00%	0.21%
Stock-based compensation plans									(0.07%)	(0.30%)	(0.57%)
Impact of federal tax reform enactment									0.00%	0.00%	9.36%
Other									0.51%	0.23%	(0.86%)
Effective tax rate									15.69%	18.67%	39.02%

INCOME TAXES - Deferred Tax Ass

INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred Tax Assets, Gross [Abstract]
Allowance for loan losses	$ 3,507	$ 3,085
Deferred compensation	3,383	3,242
Unrealized gain or loss on securities available for sale		2,641
Unrealized gain or loss on derivatives	307	685
Non-accrual interest	381	374
Acquisition fair value adjustments	2,223	3,171
Equity compensation	468	335
Contract incentives	1,167	1,658
Lease liability	2,273
Other	160	217
Total	13,869	15,408
Deferred Tax Liabilities, Gross [Abstract]
Unrealized gain or loss on securities available for sale	1,858
Depreciation	1,722	1,517
Deferred loan origination costs	862	725
Branch acquisition costs and goodwill	712	784
Core deposit intangible	1,231	1,309
Prepaid expenses	311	215
Interest rate cap premium amortization		257
Mortgage servicing rights	703	721
Prepaid pension	359	366
Right of use asset	2,253
Total	$ 10,011	$ 5,894

DERIVATIVE FINANCIAL INSTRUME_3

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Assets and Liabilitie (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Nov. 30, 2019	Mar. 31, 2019
Derivative [Line Items]
Notional Amount	$ 580,372	$ 182,239
Fair Value Asset (Liability)	(743)	811
Amount of Gain (Loss) Recognized in Other Comprehensive Income	1,768	486	$ (838)
Amount of Gain (Loss) Reclassified from Other Comprehensive Income	3,156	0
Amount of Gain (Loss) Recognized in Income	(630)	(510)
Not Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	21,748	92,239
Fair Value Asset (Liability)	59	8
Amount of Gain (Loss) Recognized in Other Comprehensive Income		0
Not Designated as Hedging Instrument | Interest rate lock commitments
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income	0	0
Not Designated as Hedging Instrument | Customer loan derivative liability
Derivative [Line Items]
Notional Amount		$ 45,641
Weighted Average Maturity		9 years 10 months 24 days
Fair Value Asset (Liability)		$ (1,353)
Not Designated as Hedging Instrument | Customer loan derivative asset
Derivative [Line Items]
Notional Amount		$ 45,641
Weighted Average Maturity		9 years 10 months 24 days
Fair Value Asset (Liability)		$ 1,353
Cash Flow Hedges | Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	100,000	90,000
Fair Value Asset (Liability)	(1,311)	803
Amount of Gain (Loss) Recognized in Other Comprehensive Income	2,291	486
Cash Flow Hedges | Designated as Hedging Instrument | Interest rate swap on deposits
Derivative [Line Items]
Notional Amount				$ 50,000	$ 50,000
Amount of Gain (Loss) Recognized in Other Comprehensive Income	2,291
Cash Flow Hedges | Designated as Hedging Instrument | Interest rate caps agreements
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income	0	486
Fair Value Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	37,190
Fair Value Asset (Liability)	593
Amount of Gain (Loss) Recognized in Other Comprehensive Income	(523)
Fair Value Hedging | Designated as Hedging Instrument | Interest rate swap on deposits
Derivative [Line Items]
Notional Amount	37,200
Fair Value Hedging | Designated as Hedging Instrument | Interest rate swap on securities
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income	(523)
Economic hedges: | Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	421,434
Fair Value Asset (Liability)	(84)
Amount of Gain (Loss) Recognized in Other Comprehensive Income	0	0
Economic hedges: | Designated as Hedging Instrument | Forward sale commitments
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Other Comprehensive Income	0	0
Economic hedges: | Designated as Hedging Instrument | Customer Loan Swaps - MNA Counterparty
Derivative [Line Items]
Notional Amount	$ 135,598
Weighted Average Maturity	7 years 6 months
Fair Value Asset (Liability)	$ (4,669)
Economic hedges: | Designated as Hedging Instrument | Customer Loan Swaps - RPA Counterparty
Derivative [Line Items]
Notional Amount	$ 69,505
Weighted Average Maturity	8 years 9 months 18 days
Fair Value Asset (Liability)	$ (3,377)
Economic hedges: | Designated as Hedging Instrument | Customer Loan Swaps - Customer
Derivative [Line Items]
Notional Amount	$ 205,103
Weighted Average Maturity	8 years 1 month 6 days
Fair Value Asset (Liability)	$ 8,046
Other liabilities | Cash Flow Hedges | Designated as Hedging Instrument | Interest rate swap on deposits
Derivative [Line Items]
Notional Amount	$ 100,000
Weighted Average Maturity	4 years 7 months 6 days
Fair Value Asset (Liability)	$ (1,311)
Other liabilities | Cash Flow Hedges | Designated as Hedging Instrument | Interest rate caps agreements
Derivative [Line Items]
Notional Amount		$ 90,000
Weighted Average Maturity		4 years 1 month 6 days
Fair Value Asset (Liability)		$ 803
Other liabilities | Fair Value Hedging | Designated as Hedging Instrument | Interest rate swap on securities
Derivative [Line Items]
Notional Amount	$ 37,190
Weighted Average Maturity	9 years 7 months 6 days
Fair Value Asset (Liability)	$ 593
Other liabilities | Economic hedges: | Designated as Hedging Instrument | Forward sale commitments
Derivative [Line Items]
Notional Amount	$ 11,228
Weighted Average Maturity	1 month 6 days
Fair Value Asset (Liability)	$ (84)
Other assets | Not Designated as Hedging Instrument | Interest rate lock commitments
Derivative [Line Items]
Notional Amount	$ 21,748	$ 957
Weighted Average Maturity	1 month 6 days	1 month 6 days
Fair Value Asset (Liability)	$ 59	$ 8
Securities Available for Sale | Fair Value Hedging | Interest rate swap on securities
Derivative [Line Items]
Carrying Amount of Hedged Assets (Liabilities)	39,026	0
Cumulative Amount of Fair Value Hedging Adjustment in Carrying Amount	523	0
Acquisition, restructuring, and other expenses | Cash Flow Hedges | Designated as Hedging Instrument
Derivative [Line Items]
Amount of Gain (Loss) Reclassified from Other Comprehensive Income		0
Acquisition, restructuring, and other expenses | Cash Flow Hedges | Designated as Hedging Instrument | Interest rate caps agreements
Derivative [Line Items]
Amount of Gain (Loss) Reclassified from Other Comprehensive Income	3,156	0
Interest expense | Cash Flow Hedges | Designated as Hedging Instrument
Derivative [Line Items]
Amount of Gain (Loss) Reclassified from Other Comprehensive Income	3,156
Interest expense | Cash Flow Hedges | Designated as Hedging Instrument | Interest rate swap on deposits
Derivative [Line Items]
Amount of Gain (Loss) Reclassified from Other Comprehensive Income	0
Interest income | Fair Value Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Amount of Gain (Loss) Reclassified from Other Comprehensive Income	0
Interest income | Fair Value Hedging | Designated as Hedging Instrument | Interest rate swap on securities
Derivative [Line Items]
Amount of Gain (Loss) Reclassified from Other Comprehensive Income	0
Other income | Not Designated as Hedging Instrument
Derivative [Line Items]
Amount of Gain (Loss) Reclassified from Other Comprehensive Income		0
Other income | Not Designated as Hedging Instrument | Interest rate lock commitments
Derivative [Line Items]
Amount of Gain (Loss) Reclassified from Other Comprehensive Income	0	0
Other income | Economic hedges: | Designated as Hedging Instrument
Derivative [Line Items]
Amount of Gain (Loss) Reclassified from Other Comprehensive Income	0	0
Other income | Economic hedges: | Designated as Hedging Instrument | Forward sale commitments
Derivative [Line Items]
Amount of Gain (Loss) Reclassified from Other Comprehensive Income	0	0
Interest expense | Cash Flow Hedges | Designated as Hedging Instrument
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	(605)	(519)
Interest expense | Cash Flow Hedges | Designated as Hedging Instrument | Interest rate swap on deposits
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	(2)
Interest expense | Cash Flow Hedges | Designated as Hedging Instrument | Interest rate caps agreements
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	(603)	(519)
Interest income | Fair Value Hedging | Designated as Hedging Instrument
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	7
Interest income | Fair Value Hedging | Designated as Hedging Instrument | Interest rate swap on securities
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	7
Other income | Not Designated as Hedging Instrument
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income		9
Other income | Not Designated as Hedging Instrument | Interest rate lock commitments
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	52	9
Other income | Economic hedges: | Designated as Hedging Instrument
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	(84)	0
Other income | Economic hedges: | Designated as Hedging Instrument | Forward sale commitments
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income	$ (84)	$ 221

DERIVATIVE FINANCIAL INSTRUME_4

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Nov. 30, 2019	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2014
Derivative [Line Items]
Acquisition, restructuring and other expenses			$ 8,317	$ 1,728	$ 3,302
Fixed rate of interest rate swap			580,372	182,239
Interest rate caps agreements
Derivative [Line Items]
Premiums paid						$ 4,600
Cap interest rate						3.00%
Effective interest rate						3.00%
Acquisition, restructuring and other expenses			3,200
Customer Loan Derivatives
Derivative [Line Items]
Cash posted with counterparty			10,700
Designated as Hedging Instrument | Cash Flow Hedges
Derivative [Line Items]
Fixed rate of interest rate swap			100,000	$ 90,000
Designated as Hedging Instrument | Cash Flow Hedges | Interest rate swap on deposits
Derivative [Line Items]
Term of interest rate swap	5 years	5 years
Fixed rate of interest rate swap	$ 50,000	$ 50,000
Notional amount of interest rate swap	1.55%	2.461%
Designated as Hedging Instrument | Fair Value Hedging
Derivative [Line Items]
Fixed rate of interest rate swap			37,190
Designated as Hedging Instrument | Fair Value Hedging | Interest rate swap on deposits
Derivative [Line Items]
Fixed rate of interest rate swap			$ 37,200
Fixed interest rate, weighted average			1.696%

DERIVATIVE FINANCIAL INSTRUME_5

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Offsetting Balance Sheet (Details) $ in Thousands	Dec. 31, 2019USD ($)
MNA counterparty
Offsetting Liabilities [Line Items]
Derivative Liabilities	$ (4,669)
Derivative Assets	4,669
Cash Collateral Pledged	10,700
Net Amount	0
RPA counterparty
Offsetting Liabilities [Line Items]
Derivative Liabilities	(3,377)
Derivative Assets	3,377
Cash Collateral Pledged	0
Net Amount	0
Total
Offsetting Liabilities [Line Items]
Derivative Liabilities	(8,046)
Derivative Assets	8,046
Cash Collateral Pledged	10,700
Net Amount	$ 0

OTHER COMMITMENTS, CONTINGENC_3

OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES - Schedule of Contractual Amounts (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Loss Contingencies [Line Items]
Contractual amounts of commitments and contingent liabilities	$ 515,919	$ 430,402
Commitments to originate new loans
Loss Contingencies [Line Items]
Contractual amounts of commitments and contingent liabilities	112,669	20,431
Unused funds on commercial and other lines of credit
Loss Contingencies [Line Items]
Contractual amounts of commitments and contingent liabilities	188,098	169,063
Unadvanced funds on home equity lines of credit
Loss Contingencies [Line Items]
Contractual amounts of commitments and contingent liabilities	114,711	106,121
Unadvanced funds on construction and real estate loans
Loss Contingencies [Line Items]
Contractual amounts of commitments and contingent liabilities	97,500	133,130
Commercial letters of credit
Loss Contingencies [Line Items]
Contractual amounts of commitments and contingent liabilities	2,941	1,171
Standby letters of credit
Loss Contingencies [Line Items]
Contractual amounts of commitments and contingent liabilities	$ 0	$ 486

SHAREHOLDERS_ EQUITY AND EARN_3

SHAREHOLDERS’ EQUITY AND EARNINGS PER COMMON SHARE - Actual and Required Capital Ratios (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Actual
Total capital to risk-weighted assets	$ 341,492	$ 331,628
Common equity tier 1 capital to risk-weighted assets	265,205	274,838
Tier 1 capital to risk-weighted assets	285,825	295,458
Tier 1 capital to average assets	$ 285,825	$ 295,458
Total capital to risk-weighted assets	13.61%	14.23%
Common equity tier 1 capital to risk-weighted assets	10.57%	11.80%
Tier 1 capital to risk-weighted assets	11.39%	12.68%
Tier 1 capital to average assets	8.13%	8.53%
Regulatory Minimum to be Well-Capitalized
Total capital to risk-weighted assets	$ 263,377	$ 230,093
Common equity tier 1 capital to risk-weighted assets	175,584	148,542
Tier 1 capital to risk-weighted assets	213,211	183,492
Tier 1 capital to average assets	$ 175,890	$ 173,102
Total capital to risk-weighted assets	10.50%	9.875%
Common equity tier 1 capital to risk-weighted assets	7.00%	6.375%
Tier 1 capital to average assets	8.50%	7.875%
Tier 1 capital to risk-weighted assets	5.00%	5.00%
Bank
Actual
Total capital to risk-weighted assets	$ 310,982	$ 321,390
Common equity tier 1 capital to risk-weighted assets	295,315	302,220
Tier 1 capital to risk-weighted assets	295,315	302,220
Tier 1 capital to average assets	$ 295,315	$ 302,220
Total capital to risk-weighted assets	12.42%	13.82%
Common equity tier 1 capital to risk-weighted assets	11.79%	12.99%
Tier 1 capital to risk-weighted assets	11.79%	12.99%
Tier 1 capital to average assets	8.39%	8.74%
Regulatory Minimum to be Well-Capitalized
Total capital to risk-weighted assets	$ 262,999	$ 229,707
Common equity tier 1 capital to risk-weighted assets	175,332	148,292
Tier 1 capital to risk-weighted assets	212,904	183,184
Tier 1 capital to average assets	$ 175,996	$ 172,990
Total capital to risk-weighted assets	10.50%	9.875%
Common equity tier 1 capital to risk-weighted assets	7.00%	6.375%
Tier 1 capital to average assets	8.50%	7.875%
Tier 1 capital to risk-weighted assets	5.00%	5.00%

SHAREHOLDERS_ EQUITY AND EARN_4

SHAREHOLDERS’ EQUITY AND EARNINGS PER COMMON SHARE - Components of AOCI (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	$ 3,911	$ (11,802)
Net unrealized gain (loss) on AFS securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive income (loss), before tax	7,342	(11,304)
Income taxes related to items of accumulated other comprehensive (income) loss	(1,793)	2,641
Net unrealized loss on derivative hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive income (loss), before tax	(718)	(2,934)
Income taxes related to items of accumulated other comprehensive (income) loss	237	685
Net unrealized loss on post-retirement plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive income (loss), before tax	(1,512)	(1,162)
Income taxes related to items of accumulated other comprehensive (income) loss	$ 355	$ 272

SHAREHOLDERS_ EQUITY AND EARN_5

SHAREHOLDERS’ EQUITY AND EARNINGS PER COMMON SHARE - Components of OCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net unrealized gain (loss) arising during the period
Net of Tax	$ 13,476	$ (6,998)	$ (229)
Less: reclassification adjustment for gains (losses) realized in net income
Net of Tax	(2,237)	(730)	(1)
Other comprehensive income (loss)
Before Tax	20,512	(8,125)	(638)
Tax Effect	(4,799)	1,857	410
Total other comprehensive income (loss)	15,713	(6,268)	(228)
Net unrealized gain (loss) on AFS securities
Net unrealized gain (loss) arising during the period
Before Tax	18,883	(9,487)	545
Tax Effect	(4,489)	2,194	(121)
Net of Tax	14,394	(7,293)	424
Less: reclassification adjustment for gains (losses) realized in net income
Before Tax	237	(924)	19
Tax Effect	(55)	216	(7)
Net of Tax	182	(708)	12
Other comprehensive income (loss)
Before Tax	18,646	(8,563)	526
Tax Effect	(4,434)	1,978	(114)
Total other comprehensive income (loss)	14,212	(6,585)	412
Net unrealized loss on derivative hedges
Net unrealized gain (loss) arising during the period
Before Tax	(940)	654	(838)
Tax Effect	289	(168)	386
Net of Tax	(651)	486	(452)
Less: reclassification adjustment for gains (losses) realized in net income
Before Tax	(3,156)	0	0
Tax Effect	737	0	0
Net of Tax	(2,419)	0	0
Other comprehensive income (loss)
Before Tax	2,216	654	(838)
Tax Effect	(448)	(168)	386
Total other comprehensive income (loss)	1,768	486	(452)
Net unrealized loss on post-retirement plans
Net unrealized gain (loss) arising during the period
Before Tax	(350)	(245)	(347)
Tax Effect	83	54	146
Net of Tax	(267)	(191)	(201)
Less: reclassification adjustment for gains (losses) realized in net income
Before Tax	0	(29)	(21)
Tax Effect	0	7	8
Net of Tax	0	(22)	(13)
Other comprehensive income (loss)
Before Tax	(350)	(216)	(326)
Tax Effect	83	47	138
Total other comprehensive income (loss)	$ (267)	$ (169)	$ (188)

SHAREHOLDERS_ EQUITY AND EARN_6

SHAREHOLDERS’ EQUITY AND EARNINGS PER COMMON SHARE - Changes in AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	$ 370,579	$ 354,641	$ 156,740
Other comprehensive gain (loss) before reclassifications	13,476	(6,998)	(229)
Less: amounts reclassified from accumulated other comprehensive income	(2,237)	(730)	(1)
Total other comprehensive income (loss)	15,713	(6,268)	(228)
Balance at end of period	396,407	370,579	354,641
Net unrealized gain (loss) on AFS securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	(8,665)	(1,713)	(2,125)
Other comprehensive gain (loss) before reclassifications	14,394	(7,293)	424
Less: amounts reclassified from accumulated other comprehensive income	182	(708)	12
Total other comprehensive income (loss)	14,212	(6,585)	412
Balance at end of period	5,547	(8,665)	(1,713)
Net loss on effective derivative hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	(2,249)	(2,250)
Other comprehensive gain (loss) before reclassifications	(651)	486
Less: amounts reclassified from accumulated other comprehensive income	(2,419)	0
Total other comprehensive income (loss)	1,768	486
Balance at end of period	(481)	(2,249)	(2,250)
Net unrealized loss on derivative hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period		(2,250)	(1,798)
Other comprehensive gain (loss) before reclassifications	(651)	486	(452)
Less: amounts reclassified from accumulated other comprehensive income	(2,419)	0	0
Total other comprehensive income (loss)	1,768	486	(452)
Balance at end of period			(2,250)
Net unrealized loss on post-retirement plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	(888)	(591)	(403)
Other comprehensive gain (loss) before reclassifications	(267)	(191)	(201)
Less: amounts reclassified from accumulated other comprehensive income	0	(22)	(13)
Total other comprehensive income (loss)	(267)	(169)	(188)
Balance at end of period	(1,155)	(888)	(591)
Accumulated other comprehensive (loss) income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	(11,802)	(4,554)	(4,326)
Total other comprehensive income (loss)	15,713	(6,268)	(228)
Balance at end of period	$ 3,911	(11,802)	$ (4,554)
Accounting Standards Update 2018-02
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Less: amounts reclassified from accumulated other comprehensive income		(980)
Accounting Standards Update 2018-02 | Net unrealized gain (loss) on AFS securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Less: amounts reclassified from accumulated other comprehensive income		(367)
Accounting Standards Update 2018-02 | Net loss on effective derivative hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Less: amounts reclassified from accumulated other comprehensive income		(485)
Accounting Standards Update 2018-02 | Net unrealized loss on post-retirement plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Less: amounts reclassified from accumulated other comprehensive income		$ (128)

SHAREHOLDERS_ EQUITY AND EARN_7

SHAREHOLDERS’ EQUITY AND EARNINGS PER COMMON SHARE - Amounts Reclassified Out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Amounts reclassified out of each component of accumulated other comprehensive income
Non-interest income	$ 7,806	$ 7,643	$ 7,453	$ 6,167	$ 7,450	$ 7,126	$ 7,121	$ 6,238	$ 29,069	$ 27,935	$ 25,982
Non-interest expense	(26,803)	(23,400)	(20,906)	(18,624)	(20,096)	(17,906)	(18,685)	(18,852)	(89,733)	(75,539)	(72,726)
Salaries and employee benefits									(45,000)	(40,964)	(39,589)
Tax expense	$ (362)	$ (780)	$ (1,364)	$ (1,703)	$ (1,426)	$ (2,076)	$ (2,123)	$ (1,937)	(4,209)	(7,562)	(16,630)
Net unrealized gain (loss) on AFS securities | Amount Reclassified from Accumulated Other Comprehensive Income (loss)
Amounts reclassified out of each component of accumulated other comprehensive income
Non-interest income									237	(924)	19
Tax expense									(55)	216	(7)
Net of tax									182	(708)	12
Net unrealized loss on effective derivative hedges | Amount Reclassified from Accumulated Other Comprehensive Income (loss)
Amounts reclassified out of each component of accumulated other comprehensive income
Non-interest expense									(3,156)	0	0
Tax expense									737	0	0
Net of tax									(2,419)	0	0
Net unrealized loss on post-retirement plans | Amount Reclassified from Accumulated Other Comprehensive Income (loss)
Amounts reclassified out of each component of accumulated other comprehensive income
Salaries and employee benefits									0	(29)	(21)
Tax expense									0	7	8
Net of tax									$ 0	$ (22)	$ (13)

SHAREHOLDERS_ EQUITY AND EARN_8

SHAREHOLDERS’ EQUITY AND EARNINGS PER COMMON SHARE - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Equity [Abstract]
Net income	$ 4,207	$ 5,015	$ 6,117	$ 7,281	$ 7,620	$ 8,970	$ 8,535	$ 7,812	$ 22,620	$ 32,937	$ 25,993
Average number of basic common shares outstanding	15,554,000	15,547,000	15,538,000	15,523,000	15,516,000	15,503,000	15,482,000	15,448,000	15,540,884	15,487,686	15,183,615
Plus: dilutive effect of stock options and awards outstanding									46,109	76,778	106,795
Average number of diluted common shares outstanding	15,602,000	15,581,000	15,586,000	15,587,000	15,574,000	15,580,000	15,571,000	15,553,000	15,586,993	15,564,464	15,290,410
Anti-dilutive options excluded from earnings calculation									0	7,991	8,659
Earnings Per Share, Basic and Diluted [Abstract]
Basic (in dollars per share)	$ 0.27	$ 0.32	$ 0.39	$ 0.47	$ 0.49	$ 0.58	$ 0.55	$ 0.51	$ 1.46	$ 2.13	$ 1.71
Diluted (in dollars per share)	$ 0.27	$ 0.32	$ 0.39	$ 0.47	$ 0.49	$ 0.58	$ 0.55	$ 0.50	$ 1.45	$ 2.12	$ 1.70

STOCK BASED COMPENSATION PLAN_2

STOCK BASED COMPENSATION PLANS - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of options exercised	$ 98	$ 760	$ 708
Unrecognized compensation cost	$ 549
Unrecognized compensation cost, expense recognition period	1 year 7 months 24 days
ISOP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance	1,012,500
Term of plan	10 years
ISOP | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
ISOP | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	7 years
2015 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance	420,000
Stock award granted to one individual, maximum	30,000
2019 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance	500,000
Term of plan	10 years
Shares available for grant under this plan	467,616
Long Term Incentive Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of plan	3 years
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 14
Unrecognized compensation cost, expense recognition period	6 months 22 days
Stock options | Weighted Average
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost, expense recognition period	6 years
Stock options and restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefit recognized from compensation expense	$ 78	81	308
Restricted stock units and performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefit recognized from compensation expense	$ 244	$ 221	423
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair market value on granted shares (usd per share)	$ 23.24	$ 26.30
Performance period required	3 years	3 years
Intrinsic value of stock units vested and exercised	$ 376	$ 337	285
Performance stock units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance	0	0
Performance stock units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for issuance	26,952	19,973
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Fair market value on granted shares (usd per share)	$ 22.45	$ 28.66
Intrinsic value of stock units vested and exercised	$ 493	$ 594	$ 272
Restricted stock units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair market value on granted shares (usd per share)	$ 22.07	$ 24.85
Restricted stock units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair market value on granted shares (usd per share)	$ 24.67	$ 30.19

STOCK BASED COMPENSATION PLAN_3

STOCK BASED COMPENSATION PLANS - Allocation of Recognized Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation expense	$ 1,352	$ 1,298	$ 1,274
Stock options and restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation expense	328	350	399
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation expense	170	237	290
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation expense	$ 854	$ 711	$ 585

STOCK BASED COMPENSATION PLAN_4

STOCK BASED COMPENSATION PLANS - Summary of Stock Options Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Number of Stock Options Outstanding
Beginning balance (in shares)	121,637	169,921
Granted (in shares)	0	0
Exercised (in shares)	(13,853)	(47,534)
Forfeited (in shares)	0	(750)
Ending balance (in shares)	107,784	121,637
Ending vested and expected to vest (in shares)	107,784	121,637
Exercisable, outstanding (in shares)	98,460	101,554
Weighted Average Exercise Price
Beginning balance (usd per share)	$ 19.96	$ 18.95
Granted (usd per share)	0	0
Exercised (usd per share)	18.44	16.32
Forfeited (usd per share)	0	22.16
Ending balance (usd per share)	20.15	19.96
Ending vested and expected to vest (usd per share)	20.15	19.96
Exercisable (usd per share)	$ 20.48	$ 20.66
Aggregate Intrinsic Value (in thousands)
Value of ending outstanding balance	$ 565	$ 313
Ending vested and expected to vest	565	313
Exercisable, aggregate intrinsic value	$ 483	$ 192

STOCK BASED COMPENSATION PLAN_5

STOCK BASED COMPENSATION PLANS - Summary of Restricted Stock Award Activity (Details) - Restricted Stock Awards	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Number of Awards Outstanding
Beginning balance (in shares) | shares	0
Awarded (in shares) | shares	12,420
Vested (in shares) | shares	(12,420)
Forfeited (in shares) | shares	0
Ending balance (in shares) | shares	0
Weighted Average Grant Date Fair Value
Beginning balance (usd per share) | $ / shares	$ 0
Granted (usd per share) | $ / shares	24.14
Vested (usd per share) | $ / shares	24.14
Forfeited (usd per share) | $ / shares	0
Ending balance (usd per share) | $ / shares	$ 0

STOCK BASED COMPENSATION PLAN_6

STOCK BASED COMPENSATION PLANS - Summary of Stock Units Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Performance stock units
Number of Units Outstanding
Beginning balance (in shares)	37,865	33,627
Awarded (in shares)	17,968.12	23,011
Forfeited (in shares)	(974)	(3,756)
Vested (in shares)	(11,801)	(15,017)
Ending balance (in shares)	43,058.12	37,865
Weighted Average Grant Date Fair Value
Beginning balance (usd per share)	$ 26.77	$ 25.21
Granted (usd per share)	23.24	26.30
Vested (usd per share)	23.92	22.25
Forfeited (usd per share)	28.78	27.94
Ending balance (usd per share)	$ 26.01	$ 26.77
Restricted Stock Units
Number of Units Outstanding
Beginning balance (in shares)	80,740	74,168
Awarded (in shares)	50,352.12	46,743
Forfeited (in shares)	(5,129)	(13,682)
Vested (in shares)	(19,411)	(26,489)
Ending balance (in shares)	106,552.12	80,740
Weighted Average Grant Date Fair Value
Beginning balance (usd per share)	$ 28.24	$ 26.60
Granted (usd per share)	22.45	28.66
Vested (usd per share)	26.11	24.36
Forfeited (usd per share)	29.28	28.28
Ending balance (usd per share)	$ 25.82	$ 28.24

FAIR VALUE MEASUREMENTS - Measu

FAIR VALUE MEASUREMENTS - Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	$ 663,230	$ 725,837
US Government-sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	321,969	404,952
US Government agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	99,661	110,512
Private label
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	19,533	20,382
Obligations of states and political subdivisions thereof
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	142,006	132,265
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	80,061	57,726
Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	663,230	725,837
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	663,230	725,837
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	6,850	2,164
Derivative liabilities	(8,186)	(1,353)
Recurring | Total Fair Value | US Government-sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	321,969	404,952
Recurring | Total Fair Value | US Government agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	99,661	110,512
Recurring | Total Fair Value | Private label
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	19,533	20,382
Recurring | Total Fair Value | Obligations of states and political subdivisions thereof
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	142,006	132,265
Recurring | Total Fair Value | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	80,061	57,726
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Derivative liabilities	0	0
Recurring | Level 1 | US Government-sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 1 | US Government agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 1 | Private label
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 1 | Obligations of states and political subdivisions thereof
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 1 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	6,791	2,156
Derivative liabilities	(8,102)	(1,353)
Recurring | Level 2 | US Government-sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	321,969	404,952
Recurring | Level 2 | US Government agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	99,661	110,512
Recurring | Level 2 | Private label
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	19,533	20,382
Recurring | Level 2 | Obligations of states and political subdivisions thereof
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	142,006	132,265
Recurring | Level 2 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	80,061	57,726
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	59	8
Derivative liabilities	(84)	0
Recurring | Level 3 | US Government-sponsored enterprises
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 3 | US Government agency
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 3 | Private label
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 3 | Obligations of states and political subdivisions thereof
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 3 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	$ 0	$ 0

FAIR VALUE MEASUREMENTS - Chang

FAIR VALUE MEASUREMENTS - Changes in Level 3 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Interest Rate Lock Commitment
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	$ 8	$ (1)
Realized gain (loss) recognized in non-interest income	51	9
Ending balance	59	8
Forward Commitments
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Beginning balance	0	(221)
Realized gain (loss) recognized in non-interest income	(84)	221
Ending balance	$ (84)	$ 0

FAIR VALUE MEASUREMENTS - Unobs

FAIR VALUE MEASUREMENTS - Unobservable Inputs Recurring (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Quantitative information about the significant unobservable inputs within Level 3
Fair Value Asset (Liability)	$ (743,000)	$ 811,000
Level 3 | Recurring
Quantitative information about the significant unobservable inputs within Level 3
Total	(25,000)
Level 3 | Recurring | Interest Rate Lock Commitment
Quantitative information about the significant unobservable inputs within Level 3
Fair Value Asset (Liability)	$ 59,000
Level 3 | Recurring | Interest Rate Lock Commitment | Pricing Model
Quantitative information about the significant unobservable inputs within Level 3
Closing Ratio	90.00%
Origination Costs, per loan	$ 1,700
Level 3 | Recurring | Forward Commitments
Quantitative information about the significant unobservable inputs within Level 3
Fair Value Asset (Liability)	$ (84,000)

FAIR VALUE MEASUREMENTS - Mea_2

FAIR VALUE MEASUREMENTS - Measured on Non-recurring Basis (Details) - Non-recurring - Level 3 - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Assets
Total	$ 17,926	$ 22,446
Total Gains (Losses)	5,422
Impaired loans
Assets
Impaired loans	9,625	15,213
Total Gains (Losses)	5,588
Capitalized servicing rights
Assets
Capitalized servicing rights	4,301	4,882
Total Gains (Losses)	0
Other real estate owned
Assets
Other real estate owned	2,236	2,351
Total Gains (Losses)	(166)
Premises held for sale
Assets
Premises held for sale	1,764	$ 0
Total Gains (Losses)	$ 0

FAIR VALUE MEASUREMENTS - Uno_2

FAIR VALUE MEASUREMENTS - Unobservable Inputs Non-recurring (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Quantitative information about the significant unobservable inputs within Level 3
Premises held for sale	$ 1,800,000	$ 0
Non-recurring | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Total	17,926,000	22,446,000
Non-recurring | Fair value of collateral - appraised value | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans	6,137,000	11,676,000
Other real estate owned	2,236,000	2,351,000
Premises held for sale	1,764,000
Non-recurring | Discounted cash flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans	3,488,000	3,537,000
Capitalized servicing rights	4,301,000	4,882,000
Non-recurring | Impaired loans | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans	9,625,000	15,213,000
Non-recurring | Impaired loans | Minimum | Fair value of collateral - appraised value | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Appraised value	$ 0	$ 0
Non-recurring | Impaired loans | Minimum | Discounted cash flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Discount rate	2.88%	2.88%
Cash flows	$ 22,000	$ 22,000
Non-recurring | Impaired loans | Maximum | Fair value of collateral - appraised value | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Appraised value	$ 6,915,000	$ 6,915,000
Non-recurring | Impaired loans | Maximum | Discounted cash flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Discount rate	9.50%	9.50%
Cash flows	$ 1,002,000	$ 1,072,000
Non-recurring | Capitalized servicing rights | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights	4,301,000	4,882,000
Non-recurring | Other real estate owned | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Other real estate owned	2,236,000	2,351,000
Non-recurring | Other real estate owned | Fair value of collateral - appraised value | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Appraised value	$ 2,695,000	2,700,000
Non-recurring | Other real estate owned | Minimum | Fair value of collateral - appraised value | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Selling Costs	10.00%
Non-recurring | Other real estate owned | Maximum | Fair value of collateral - appraised value | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Selling Costs	20.00%
Non-recurring | Premises held for sale | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Premises held for sale	$ 1,764,000	$ 0
Non-recurring | Premises held for sale | Minimum | Fair value of collateral - appraised value | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Appraised value	136,000
Non-recurring | Premises held for sale | Maximum | Fair value of collateral - appraised value | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Appraised value	$ 527,000
Measurement Input, Constant Prepayment Rate | Non-recurring | Capitalized servicing rights | Discounted cash flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Constant prepayment rate (CPR)		8.19%
Measurement Input, Discount Rate | Non-recurring | Capitalized servicing rights | Discounted cash flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Discount rate	10.07%	10.08%
Measurement Input, Discount Rate | Non-recurring | Other real estate owned | Discounted cash flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Selling Costs		12.93%
Measurement Input, Discount Rate | Non-recurring | Premises held for sale | Discounted cash flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Selling Costs	6.00%
Measurement Input, Prepayment Rate | Non-recurring | Capitalized servicing rights | Discounted cash flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Constant prepayment rate (CPR)	9.95%
Measurement Input, Loss Severity | Non-recurring | Impaired loans | Minimum | Fair value of collateral - appraised value | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Loss severity	0.00%	0.00%
Measurement Input, Loss Severity | Non-recurring | Impaired loans | Maximum | Fair value of collateral - appraised value | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Loss severity	55.00%	55.00%

FAIR VALUE MEASUREMENTS - Fair

FAIR VALUE MEASUREMENTS - Fair Values and Carrying Amounts (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financial Assets
Securities available for sale	$ 663,230	$ 725,837
Level 1
Financial Assets
Cash and cash equivalents	56,910	98,754
Securities available for sale	0	0
FHLB bank stock	0	0
Net loans	0	0
Accrued interest receivable	0	0
Cash surrender value of bank-owned life insurance policies	0	0
Derivative assets	0	0
Financial Liabilities
Non-maturity deposits	0	0
Time deposits	0	0
Other short-term borrowings	0	0
Federal Home Loan Bank advances	0	0
Derivative liabilities	0	0
Level 1 | Senior subordinated
Financial Liabilities
Subordinated borrowings	0	0
Level 1 | Junior subordinated
Financial Liabilities
Subordinated borrowings		0
Level 2
Financial Assets
Cash and cash equivalents	0	0
Securities available for sale	663,230	725,837
FHLB bank stock	20,679	35,659
Net loans	0	0
Accrued interest receivable	3,294	3,533
Cash surrender value of bank-owned life insurance policies	75,863	73,810
Derivative assets	6,791	2,156
Financial Liabilities
Non-maturity deposits	1,751,481	1,476,673
Time deposits	932,886	927,577
Other short-term borrowings	44,831	36,171
Federal Home Loan Bank advances	425,989	643,065
Derivative liabilities	(8,102)	0
Level 2 | Senior subordinated
Financial Liabilities
Subordinated borrowings	59,920	37,973
Level 2 | Junior subordinated
Financial Liabilities
Subordinated borrowings		3,923
Level 3
Financial Assets
Cash and cash equivalents	0	0
Securities available for sale	0	0
FHLB bank stock	0	0
Net loans	2,634,147	2,415,863
Accrued interest receivable	0	0
Cash surrender value of bank-owned life insurance policies	0	0
Derivative assets	59	8
Financial Liabilities
Non-maturity deposits	0	0
Time deposits	0	0
Other short-term borrowings	0	0
Federal Home Loan Bank advances	0	0
Derivative liabilities	(84)	(1,353)
Level 3 | Senior subordinated
Financial Liabilities
Subordinated borrowings	0	0
Level 3 | Junior subordinated
Financial Liabilities
Subordinated borrowings		0
Carrying Value
Financial Assets
Cash and cash equivalents	56,910	98,754
Securities available for sale	663,230	725,837
FHLB bank stock	20,679	35,659
Net loans	2,625,739	2,476,361
Accrued interest receivable	3,294	3,533
Cash surrender value of bank-owned life insurance policies	75,863	73,810
Derivative assets	6,850	2,164
Financial Liabilities
Non-maturity deposits	1,763,116	1,550,445
Time deposits	932,635	932,793
Other short-term borrowings	44,832	36,211
Federal Home Loan Bank advances	426,564	644,611
Derivative liabilities	(8,186)	(1,353)
Carrying Value | Senior subordinated
Financial Liabilities
Subordinated borrowings	59,920	37,973
Carrying Value | Junior subordinated
Financial Liabilities
Subordinated borrowings		5,000
Total Fair Value
Financial Assets
Cash and cash equivalents	56,910	98,754
Securities available for sale	663,230	725,837
FHLB bank stock	20,679	35,659
Net loans	2,634,147	2,415,863
Accrued interest receivable	3,294	3,533
Cash surrender value of bank-owned life insurance policies	75,863	73,810
Derivative assets	6,850	2,164
Financial Liabilities
Non-maturity deposits	1,751,481	1,476,673
Time deposits	932,886	927,577
Other short-term borrowings	44,831	36,171
Federal Home Loan Bank advances	425,989	643,065
Derivative liabilities	(8,186)	(1,353)
Total Fair Value | Senior subordinated
Financial Liabilities
Subordinated borrowings	$ 59,920	37,973
Total Fair Value | Junior subordinated
Financial Liabilities
Subordinated borrowings		$ 3,923

REVENUE FROM CONTRACTS WITH C_3

REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 22,190	$ 21,523
Products and services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenues	10,748	9,766
Products and services transferred over time
Disaggregation of Revenue [Line Items]
Revenues	11,442	11,757
Trust management fees
Disaggregation of Revenue [Line Items]
Revenues	11,098	11,017
Financial services fees
Disaggregation of Revenue [Line Items]
Revenues	966	968
Interchange fees
Disaggregation of Revenue [Line Items]
Revenues	4,899	4,434
Customer deposit fees
Disaggregation of Revenue [Line Items]
Revenues	4,281	3,800
Other customer service fees
Disaggregation of Revenue [Line Items]
Revenues	$ 946	$ 1,304

REVENUE FROM CONTRACTS WITH C_4

REVENUE FROM CONTRACTS WITH CUSTOMERS - Contract with customers (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Other Assets	$ 1,703	$ 2,866
Other Liabilities	$ 3,114	$ 4,923

LEASES - ROU Assets and Liabili

LEASES - ROU Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 9,623
Operating lease liabilities	$ 9,651
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets		$ 9,000
Operating lease liabilities		$ 9,000

LEASES - Additional Lease Infor

LEASES - Additional Lease Information (Details)	Dec. 31, 2019
Leases [Abstract]
Weighted-average remaining lease term	8 years 11 months 16 days
Weighted-average discount rate	3.27%

LEASES - Lease Cost (Details)

LEASES - Lease Cost (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Leases [Abstract]
Operating lease cost	$ 698
Variable lease cost	711
Total lease cost	$ 1,409

LEASES - Future Minimum Payment

LEASES - Future Minimum Payments for Leases (Details) $ in Thousands	Dec. 31, 2019USD ($)
Leases [Abstract]
December 31, 2020	$ 1,194
December 31, 2021	1,199
December 31, 2022	1,222
December 31, 2023	1,219
December 31, 2024	1,190
Thereafter	5,984
Total future minimum lease payments	12,008
Amounts representing interest	(2,357)
Operating lease liabilities	$ 9,651

CONDENSED FINANCIAL STATEMENT_3

CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY - Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash due from Bar Harbor Bank and Trust	$ 37,261	$ 35,208
Premises and equipment	51,205	48,804
Other assets	42,111	29,853
Total assets	3,669,128	3,608,487
Liabilities and Shareholders Equity
Subordinated notes	59,920	42,973
Shareholders equity	396,407	370,579	$ 354,641	$ 156,740
Total liabilities and shareholders’ equity	3,669,128	3,608,487
Parent Company
Assets
Cash due from Bar Harbor Bank and Trust	29,223	9,993
Investment in subsidiaries	427,536	398,821
Premises and equipment	687	687
Other assets	4,586	3,416
Total assets	462,032	412,917
Liabilities and Shareholders Equity
Subordinated notes	59,920	37,973
Accrued expenses	5,705	4,365
Shareholders equity	396,407	370,579
Total liabilities and shareholders’ equity	$ 462,032	$ 412,917

CONDENSED FINANCIAL STATEMENT_4

CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY - Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Interest expense	$ 10,013	$ 11,817	$ 12,289	$ 11,462	$ 10,508	$ 9,715	$ 8,726	$ 7,619	$ 45,581	$ 36,568	$ 23,914
Non-interest expense	26,803	23,400	20,906	18,624	20,096	17,906	18,685	18,852	89,733	75,539	72,726
Income before income taxes	4,569	5,795	7,481	8,984	9,046	11,046	10,658	9,749	26,829	40,499	42,623
Income tax benefit	362	780	1,364	1,703	1,426	2,076	2,123	1,937	4,209	7,562	16,630
Net income	$ 4,207	$ 5,015	$ 6,117	$ 7,281	$ 7,620	$ 8,970	$ 8,535	$ 7,812	22,620	32,937	25,993
Parent Company
Condensed Financial Statements, Captions [Line Items]
Dividends from subsidiaries									21,734	23,705	13,907
Other									337	31	25
Total revenue									22,071	23,736	13,932
Interest expense									2,188	2,121	1,857
Non-interest expense									3,208	3,147	2,979
Total expense									5,396	5,268	4,836
Income before income taxes									16,675	18,468	9,096
Income tax benefit									(1,100)	(1,136)	(1,210)
Income before equity in undistributed income of subsidiaries									17,775	19,604	10,306
Equity in undistributed income of subsidiaries									4,845	13,333	15,687
Net income									$ 22,620	$ 32,937	$ 25,993

CONDENSED FINANCIAL STATEMENT_5

CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY - Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 4,207	$ 5,015	$ 6,117	$ 7,281	$ 7,620	$ 8,970	$ 8,535	$ 7,812	$ 22,620	$ 32,937	$ 25,993
Adjustments to reconcile net income to net cash (used) provided by operating activities:
Net cash provided by operating activities									36,403	37,722	40,354
Cash flows from investing activities:
Acquisitions, net of cash paid											39,537
Net cash used in investing activities									(84,981)	(43,964)	(159,006)
Cash flows from financing activities:
Proceeds from issuance of subordinated debt									40,000	0	0
Repayments of subordinated debt									(22,000)	0	0
Net cash provided by financing activities									6,734	14,311	200,898
Net change in cash and cash equivalents									(41,844)	8,069	82,246
Cash and cash equivalents at beginning of year				98,754				90,685	98,754	90,685	8,439
Cash and cash equivalents at end of year	56,910				98,754				56,910	98,754	90,685
Parent Company
Cash flows from operating activities:
Net income									22,620	32,937	25,993
Adjustments to reconcile net income to net cash (used) provided by operating activities:
Equity in undistributed income of subsidiaries									(4,845)	(13,333)	(15,687)
Other, net									(1,040)	(1,457)	(1,364)
Net cash provided by operating activities									16,735	18,147	8,942
Cash flows from investing activities:
Acquisitions, net of cash paid									0	0	1,939
Purchase of securities									0	(7)	0
Other, net									(8,000)	0	0
Net cash used in investing activities									(8,000)	(7)	1,939
Cash flows from financing activities:
Proceeds from issuance of subordinated debt									40,000	0	0
Repayments of subordinated debt									(17,000)	0	0
Net proceeds from common stock									883	951	1,052
Net proceeds from reissuance of treasury stock									(22)	686	686
Common stock cash dividends paid									(13,366)	(12,184)	(11,505)
Other, net									0	0	(16)
Net cash provided by financing activities									10,495	(10,547)	(9,783)
Net change in cash and cash equivalents									19,230	7,593	1,098
Cash and cash equivalents at beginning of year				$ 9,993				$ 2,400	9,993	2,400	1,302
Cash and cash equivalents at end of year	$ 29,223				$ 9,993				$ 29,223	$ 9,993	$ 2,400

QUARTERLY DATA (UNAUDITED) (Det

QUARTERLY DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Interest and dividend income	$ 34,117	$ 34,262	$ 33,785	$ 33,227	$ 32,772	$ 32,184	$ 31,718	$ 30,777	$ 135,391	$ 127,451	$ 116,069
Interest expense	10,013	11,817	12,289	11,462	10,508	9,715	8,726	7,619	45,581	36,568	23,914
Net interest income	24,104	22,445	21,496	21,765	22,264	22,469	22,992	23,158	89,810	90,883	92,155
Non-interest income	7,806	7,643	7,453	6,167	7,450	7,126	7,121	6,238	29,069	27,935	25,982
Provision for loan losses	538	893	562	324	572	643	770	795	2,317	2,780	2,788
Non-interest expense	26,803	23,400	20,906	18,624	20,096	17,906	18,685	18,852	89,733	75,539	72,726
Income before income taxes	4,569	5,795	7,481	8,984	9,046	11,046	10,658	9,749	26,829	40,499	42,623
Income tax expense	362	780	1,364	1,703	1,426	2,076	2,123	1,937	4,209	7,562	16,630
Net income	$ 4,207	$ 5,015	$ 6,117	$ 7,281	$ 7,620	$ 8,970	$ 8,535	$ 7,812	$ 22,620	$ 32,937	$ 25,993
Earnings per share:
Basic (in dollars per share)	$ 0.27	$ 0.32	$ 0.39	$ 0.47	$ 0.49	$ 0.58	$ 0.55	$ 0.51	$ 1.46	$ 2.13	$ 1.71
Diluted (in dollars per share)	$ 0.27	$ 0.32	$ 0.39	$ 0.47	$ 0.49	$ 0.58	$ 0.55	$ 0.50	$ 1.45	$ 2.12	$ 1.70
Weighted average shares outstanding:
Basic (in shares)	15,554,000	15,547,000	15,538,000	15,523,000	15,516,000	15,503,000	15,482,000	15,448,000	15,540,884	15,487,686	15,183,615
Diluted (in shares)	15,602,000	15,581,000	15,586,000	15,587,000	15,574,000	15,580,000	15,571,000	15,553,000	15,586,993	15,564,464	15,290,410