First Connecticut Bancorp (FBNK) 10-Q 2 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 23, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	First Connecticut Bancorp, Inc.
Entity Central Index Key	1,511,198
Trading Symbol	fbnk
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		15,952,946
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Amendment Flag	false
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3

Consolidated Statements of Fina

Consolidated Statements of Financial Condition (Unaudited) - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Assets
Cash and due from banks		$ 35,452	$ 44,086
Interest bearing deposits with other institutions		9,023	3,637
Total cash and cash equivalents		44,475	47,723
Securities held-to-maturity, at amortized cost		56,848	33,061
Securities available-for-sale, at fair value		87,299	103,520
Loans held for sale		6,902	3,270
Loans	[1]	2,698,613	2,547,512
Allowance for loan losses		(22,202)	(21,529)
Loans, net		2,676,411	2,525,983
Premises and equipment, net		17,005	18,002
Federal Home Loan Bank of Boston stock, at cost		15,954	16,378
Accrued income receivable		8,039	7,432
Bank-owned life insurance		57,156	51,726
Deferred income taxes, net		13,965	14,795
Prepaid expenses and other assets		17,625	15,665
Total assets		3,001,679	2,837,555
Deposits
Interest-bearing		1,945,179	1,773,807
Noninterest-bearing		437,372	441,283
Total Deposits		2,382,551	2,215,090
Federal Home Loan Bank of Boston advances		271,458	287,057
Repurchase agreement borrowings		10,500	10,500
Repurchase liabilities		21,538	18,867
Accrued expenses and other liabilities		42,439	45,865
Total liabilities		2,728,486	2,577,379
Commitments and contingencies (Note 18)
Stockholders' Equity
Common stock, $0.01 par value, 30,000,000 shares authorized; 17,947,647 shares issued and 15,952,946 shares outstanding at September 30, 2017 and 17,947,647 shares issued and 15,897,698 shares outstanding at December 31, 2016		181	181
Additional paid-in-capital		185,319	184,111
Unallocated common stock held by ESOP		(9,796)	(10,567)
Treasury stock, at cost (1,994,701 shares at September 30, 2017 and 2,049,949 shares at December 31, 2016)		(29,620)	(30,400)
Retained earnings		133,337	123,541
Accumulated other comprehensive loss		(6,228)	(6,690)
Total stockholders' equity		273,193	260,176
Total liabilities and stockholders' equity		$ 3,001,679	$ 2,837,555
[1]	Loans include net deferred loan costs of $4.6 million and $3.8 million at September 30, 2017 and December 31, 2016, respectively.

Consolidated Statements of Fin3

Consolidated Statements of Financial Condition (Unaudited) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	17,947,647	17,947,647
Common stock, shares outstanding	15,952,946	15,897,698
Treasury stock, shares	1,994,701	2,049,949
Net deferred loan costs	$ 4,595	$ 3,844

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest and fees on loans
Mortgage		$ 19,165	$ 16,134	$ 54,779	$ 48,161
Other		5,535	4,983	15,691	14,555
Interest and dividends on investments
United States Government and agency obligations		602	419	1,674	1,285
Other bonds		6	13	20	40
Corporate stocks		242	210	657	681
Other interest income		54	46	111	104
Total interest income		25,604	21,805	72,932	64,826
Interest expense
Deposits		3,423	2,975	9,360	8,446
Federal Home Loan Bank of Boston advances		1,230	955	3,343	2,902
Repurchase agreement borrowings		95	98	286	289
Repurchase liabilities		8	22	22	56
Total interest expense		4,756	4,050	13,011	11,693
Net interest income		20,848	17,755	59,921	53,133
Provision for loan losses		217	698	1,252	1,716
Net interest income after provision for loan losses		20,631	17,057	58,669	51,417
Noninterest income
Fees for customer services		1,662	1,600	4,740	4,614
Net gain on loans sold		872	939	1,999	2,180
Brokerage and insurance fee income		54	58	159	166
Bank owned life insurance income		357	335	1,274	1,056
Other		355	753	2,169	1,186
Total noninterest income		3,300	3,685	10,341	9,202
Noninterest expense
Salaries and employee benefits		9,668	9,285	29,031	27,874
Occupancy expense		1,312	1,271	3,812	3,679
Furniture and equipment expense		1,054	1,020	3,023	3,099
FDIC assessment		419	392	1,257	1,179
Marketing		717	682	1,992	1,647
Other operating expenses		2,749	2,834	7,834	7,927
Total noninterest expense		15,919	15,484	46,949	45,405
Income before income taxes		8,012	5,258	22,061	15,214
Income tax expense		2,415	1,485	6,369	4,185
Net income		$ 5,597	$ 3,773	$ 15,692	$ 11,029
Net earnings per share (See Note 3):
Basic (in dollars per share)	[1]	$ 0.37	$ 0.25	$ 1.04	$ 0.74
Diluted (in dollars per share)	[1]	0.35	0.25	0.99	0.73
Dividends per share (in dollars per share)		$ 0.14	$ 0.08	$ 0.37	$ 0.22
[1]	Certain per share amounts may not appear to reconcile due to rounding.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement Of Income (Loss) and Comprehensive Income (Loss) [Abstract]
Net income	$ 5,597	$ 3,773	$ 15,692	$ 11,029
Unrealized gains on securities:
Unrealized holding gains arising during the period	51	8	229	776
Less: reclassification adjustment for gains included in net income	0	0	0	0
Net change in unrealized gains	51	8	229	776
Change related to pension and other postretirement benefit plans	162	164	487	491
Other comprehensive income, before tax	213	172	716	1,267
Income tax expense	76	61	254	449
Other comprehensive income, net of tax	137	111	462	818
Comprehensive income	$ 5,734	$ 3,884	$ 16,154	$ 11,847

Consolidated Statement of Chang

Consolidated Statement of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock	Additional Paid in Capital	Unallocated Common Shares Held by ESOP	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Loss	Total
Balance at Dec. 31, 2015	$ 181	$ 181,997	$ (11,626)	$ (30,602)	$ 112,933	$ (7,162)	$ 245,721
Balance (in shares) at Dec. 31, 2015	15,881,663
Increase (Decrease) in Stockholders' Equity [Roll Forward]
ESOP shares released and committed to be released		392	793				1,185
Cash dividend paid ($0.22 & $0.37 per common share for period September 30, 2016 and 2017, respectively)					(3,475)		(3,475)
Treasury stock acquired				(2,527)			(2,527)
Treasury stock acquired (in shares)	(156,800)
Stock options exercised		(53)		1,484			1,431
Stock options exercised (in shares)	110,131
Cancelation of shares for tax withholding		(516)					(516)
Cancelation of shares for tax withholding (in shares)	(29,246)
Tax expense from stock-based compensation		173					173
Share based compensation expense		1,776					1,776
Net income					11,029		11,029
Other comprehensive income						818	818
Balance at Sep. 30, 2016	$ 181	183,769	(10,833)	(31,645)	120,487	(6,344)	255,615
Balance (in shares) at Sep. 30, 2016	15,805,748
Balance at Dec. 31, 2016	$ 181	184,111	(10,567)	(30,400)	123,541	(6,690)	$ 260,176
Balance (in shares) at Dec. 31, 2016	15,897,698						15,897,698
Increase (Decrease) in Stockholders' Equity [Roll Forward]
ESOP shares released and committed to be released		991	771				$ 1,762
Cash dividend paid ($0.22 & $0.37 per common share for period September 30, 2016 and 2017, respectively)					(5,896)		(5,896)
Stock options exercised		(31)		700			669
Stock options exercised (in shares)	49,550
Share based compensation expense		248		80			328
Share based compensation expense (in share)	5,698
Net income					15,692		15,692
Other comprehensive income						462	462
Balance at Sep. 30, 2017	$ 181	$ 185,319	$ (9,796)	$ (29,620)	$ 133,337	$ (6,228)	$ 273,193
Balance (in shares) at Sep. 30, 2017	15,952,946						15,952,946

Consolidated Statement of Chan7

Consolidated Statement of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement Of Stockholders Equity [Abstract]
Dividends per share (in dollars per share)	$ 0.14	$ 0.08	$ 0.37	$ 0.22

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities
Net income	$ 15,692	$ 11,029
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	1,252	1,716
Reversal of off-balance sheet commitments	(120)	(415)
Depreciation and amortization	1,530	1,783
Amortization of ESOP expense	1,762	1,185
Share based compensation expense	328	1,776
Loans originated for sale	(84,527)	(127,615)
Proceeds from the sale of loans held for sale	82,367	133,970
Loss on disposal of premises and equipment		71
Loss (gain) on fair value adjustment for mortgage banking derivatives	130	(146)
Impairment losses on alternative investments	10	219
Mortgage servicing rights impairment		283
Writedowns on foreclosed real estate		21
Loss on sale of foreclosed real estate		71
Net gain on loans sold	(1,999)	(2,180)
Net (accretion) amortization of investment security discounts and premiums	(53)	(82)
Change in net deferred loan fees and costs	(751)	42
(Increase) decrease in accrued income receivable	(607)	334
Deferred income tax	576	(142)
Increase in cash surrender value of bank-owned life insurance	(999)	(974)
Increase in prepaid expenses and other assets	(2,024)	(13,668)
(Decrease) increase in accrued expenses and other liabilities	(2,895)	15,487
Net cash provided by operating activities	9,672	22,765
Cash flows from investing activities
Maturities, calls and principal payments of securities held-to-maturity	12,922	24,908
Maturities, calls and principal payments of securities available-for-sale	43,551	129,203
Purchases of securities held-to-maturity	(36,708)
Purchases of securities available-for-sale	(27,049)	(130,015)
Loan originations, net of principal repayments	(180,272)	(115,449)
Redemptions of Federal Home Loan Bank of Boston stock, net	424	6,590
Purchase of bank-owned life insurance	(5,000)
Proceeds from sale of foreclosed real estate		375
Proceeds from bank-owned life insurance	569	228
Proceeds from sales of loans	29,870
Purchases of premises and equipment	(533)	(1,672)
Net cash used in investing activities	(162,226)	(85,832)
Cash flows from financing activities
Net payments on Federal Home Loan Bank of Boston advances	(15,599)	(157,000)
Net increase in demand deposits, NOW accounts, savings accounts and money market accounts	122,487	220,136
Net increase in time deposits	44,974	36,379
Net increase (decrease) in repurchase liabilities	2,671	(733)
Stock options exercised	669	1,431
Excess tax expense from stock-based compensation		173
Cancellation of shares for tax withholding		(516)
Repurchase of common stock		(2,527)
Cash dividend paid	(5,896)	(3,475)
Net cash provided by financing activities	149,306	93,868
Net (decrease) increase in cash and cash equivalents	(3,248)	30,801
Cash and cash equivalents at beginning of period	47,723	59,139
Cash and cash equivalents at end of period	44,475	89,940
Supplemental disclosure of cash flow information
Cash paid for interest	12,975	11,683
Cash paid for income taxes	5,210	4,337
Transfer from loans to held for sale	$ 29,343
Loans transferred to other real estate owned		$ 189

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	1. Summary of Significant Accounting Policies Organization and Business First Connecticut Bancorp, Inc. is a Maryland-chartered bank holding company that wholly owns its only subsidiary, Farmington Bank (collectively with its subsidiary, the “Company”). Farmington Bank's main office is located in Farmington, Connecticut. Farmington Bank is a full-service, community bank with 24 branch locations throughout central Connecticut and western Massachusetts, offering commercial and residential lending as well as wealth management services. Farmington Bank's primary source of income is interest accrued on loans to customers, which include small and middle market businesses and individuals residing primarily in Connecticut and western Massachusetts. However, the Bank will selectively lend to borrowers in other northeastern states. Wholly-owned subsidiaries of Farmington Bank are Farmington Savings Loan Servicing, Inc., a passive investment company that was established to service and hold loans collateralized by real property; Village Investments, Inc.; the Village Corp., Limited, and Village Square Holdings, Inc.; 28 Main Street Corp., is a subsidiary that was formed to hold residential other real estate owned and Village Management Corp., is a subsidiary that was formed to hold commercial other real estate owned, are presently inactive. On June 21, 2013, the Company received regulatory approval to repurchase up to 1,676,452 shares, or 10% of its current outstanding common stock. Repurchased shares are held as treasury stock and are available for general corporate purposes. The Company has 600,945 shares remaining available to be repurchased at September 30, 2017. Basis of Financial Statement Presentation The consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission. The Company has condensed or omitted certain information and footnote disclosures normally included in the consolidated financial statements in accordance with accounting principles generally accepted in the United States of America pursuant to such rules and regulations. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair statement have been included. All significant intercompany transactions and balances have been eliminated in consolidation. These consolidated financial statements should be read in conjunction with the audited consolidated financial statements as of and for the year ended December 31, 2016 included in the Company’s 10-K filed on March 13, 2017. The results of operations for the interim periods are not necessarily indicative of the results for the full year. In preparing the consolidated financial statements, management is required to make extensive use of estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the statement of condition and revenues and expenses for the interim period. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, investment security other-than-temporary impairment judgments and investment security valuation. Investment Securities Marketable equity and debt securities are classified as either trading, available-for-sale, or held-to-maturity (applies only to debt securities). Management determines the appropriate classifications of securities at the time of purchase. At September 30, 2017 and December 31, 2016, the Company had no debt or equity securities classified as trading. Held-to-maturity securities are debt securities for which the Company has the ability and intent to hold until maturity. All other securities not included in held-to-maturity are classified as available-for-sale. Held-to-maturity securities are recorded at amortized cost, adjusted for the amortization or accretion of premiums or discounts. Premiums and discounts on debt securities are amortized or accreted into interest income over the term of the securities using the level yield method. Available-for-sale securities are recorded at fair value. Unrealized gains and losses, net of the related tax effect, on available-for-sale securities are excluded from earnings and are reported in accumulated other comprehensive income, a separate component of equity, until realized. Further information relating to the fair value of securities can be found within Note 4 of the Notes to Consolidated Financial Statements. In accordance with Financial Accounting Standards Board Accounting Standards Codification ("FASB ASC") 320- “Debt and Equity Securities”, a decline in market value of a debt security below amortized cost that is deemed other-than-temporary is charged to earnings for the credit related other-than-temporary impairment ("OTTI"), resulting in the establishment of a new cost basis for the security, while the non-credit related OTTI is recognized in other comprehensive income if there is no intent or requirement to sell the security. The securities portfolio is reviewed on a quarterly basis for the presence of other-than-temporary impairment. If an equity security is deemed other-than-temporarily impaired, the full impairment is considered to be credit-related and a charge to earnings would be recorded. Gains and losses on sales of securities are recognized at the time of sale on a specific identification basis. Loans Held for Sale Loans originated and intended for sale in the secondary market are carried at the lower of amortized cost or fair value, as determined by aggregate outstanding commitments from investors or current investor yield requirements. Net unrealized losses, if any, are recognized through a valuation allowance by charges to other noninterest income in the accompanying Consolidated Statements of Income. Gains or losses on sales of mortgage loans are recognized based on the difference between the selling price and the carrying value of the related mortgage loans sold on the trade date to net gain on loans sold in the accompanying Consolidated Statements of Income. Loans The Company’s loan portfolio segments include residential real estate, commercial real estate, construction, commercial, home equity lines of credit and other. Construction includes classes for commercial and residential construction. Loans that management has the intent and ability to hold for the foreseeable future or until maturity or pay-off generally are reported at their outstanding unpaid principal balances adjusted for charge-offs, the allowance for loan losses, and any deferred fees or costs on originated loans. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the related loan yield using the interest method. When loans are prepaid, sold or participated out, the unamortized portion is recognized as income or expense at that time. Interest on loans is accrued and recognized in interest income based on contractual rates applied to principal amounts outstanding. Accrual of interest is discontinued, and previously accrued income is reversed, when loan payments are more than 90 days past due or when, in the judgment of management, collectability of the loan or loan interest becomes uncertain. Loans may be returned to accrual status when all principal and interest amounts contractually due (including arrearages) are reasonably assured of repayment within a reasonable period and there is a sustained period of repayment performance (generally a minimum of six months) by the borrower, in accordance with contractual terms involving payment of cash or cash equivalents. The interest on these loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual status. If a residential real estate, commercial real estate, construction, commercial, home equity line of credit and other loan is on non-accrual status cash payments are applied towards the reduction of principal. If loans are considered impaired but accruing, cash payments are applied first to interest income and then as a reduction of principal as specified in the contractual agreement, unless the collection of the remaining principal amount due is considered doubtful. The policy for determining past due or delinquency status for all loan portfolio segments is based on the number of days past due or the contractual terms of the loan. A loan is considered delinquent when the customer does not make their payments due according to their contractual terms. Generally, a loan can be demanded at any time if the loan is delinquent or if the borrower fails to meet any other agreed upon terms and conditions. On a quarterly basis, our loan policy requires that we evaluate for impairment all commercial loans classified as non-accrual, loans secured by real property in foreclosure or are otherwise likely to be impaired, non-accruing residential and home equity loan segments greater than $100,000 and all troubled debt restructurings. Nonperforming loans consist of non-accruing loans, non-accruing loans identified as trouble debt restructurings and loans past due more than 90 days and still accruing interest. Allowance for Loan Losses The allowance for loan losses is maintained at a level believed adequate by management to absorb potential losses inherent in the loan portfolio as of the statement of condition date. The allowance for loan losses consists of a formula allowance following FASB ASC 450 – “Contingencies” and FASB ASC 310 – “Receivables”. The allowance for loan losses is established as losses are estimated to have occurred through a provision for loan losses charged to earnings. Loan losses are charged against the allowance when management believes the uncollectibility of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses is evaluated on a quarterly basis by management. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available. The allowance consists of general, allocated and unallocated components, as further described below. All reserves are available to cover any losses regardless of how they are allocated. General component: The general component of the allowance for loan losses is based on historical loss experience adjusted for qualitative factors stratified by the following loan segments: residential real estate, commercial real estate, construction, commercial, home equity line of credit and other. Construction loans include classes for commercial investment real estate construction, commercial owner occupied construction, residential development, residential subdivision construction and residential owner occupied construction loans. Management uses a rolling average of historical losses based on a time frame appropriate to capture relevant loss data for each loan segment. This historical loss factor is adjusted for the following qualitative factors: levels/trends in delinquencies and nonaccrual loans; trends in volume and terms of loans; effects of changes in risk selection and underwriting standards and other changes in lending policies, procedures and practices; experience/ability/depth of lending management and staff; and national and local economic trends and conditions. There were no material changes in the Company’s policies or methodology pertaining to the general component of the allowance for loan losses during the nine months ended September 30, 2017. The qualitative factors are determined based on the various risk characteristics of each loan segment. Risk characteristics relevant to each portfolio segment are as follows: Residential real estate – Residential real estate loans are generally originated in amounts up to 95.0% of the lesser of the appraised value or purchase price of the property, with private mortgage insurance required on loans with a loan-to-value ratio in excess of 80.0%. The Company does not grant subprime loans. All loans in this segment are collateralized by owner-occupied residential real estate and repayment is dependent on the credit quality of the individual borrower. All residential mortgage loans are underwritten pursuant to secondary market underwriting guidelines which include minimum FICO standards. The overall health of the economy, including unemployment rates and housing prices, will have an effect on the credit quality in this segment. Commercial real estate – Loans in this segment are primarily originated to finance income-producing properties throughout the northeastern states. The underlying cash flows generated by the properties may be adversely impacted by a downturn in the economy as evidenced by increased vacancy rates, which in turn, may have an effect on the credit quality in this segment. Management generally obtains rent rolls and other financial information, as appropriate on an annual basis and continually monitors the cash flows of these loans. Construction loans – Loans in this segment include commercial construction loans, real estate subdivision development loans to developers, licensed contractors and builders for the construction and development of commercial real estate projects and residential properties. Construction lending contains a unique risk characteristic as loans are originated under market and economic conditions that may change between the time of origination and the completion and subsequent purchaser financing of the property. In addition, construction subdivision loans and commercial and residential construction loans to contractors and developers entail additional risks as compared to single-family residential mortgage lending to owner-occupants. These loans typically involve large loan balances concentrated in single borrowers or groups of related borrowers. Real estate subdivision development loans to developers, licensed contractors and builders are generally speculative real estate development loans for which payment is derived from sale of the property. Credit risk may be affected by cost overruns, time to sell at an adequate price, and market conditions. Construction financing is generally considered to involve a higher degree of credit risk than longer-term financing on improved, owner-occupied real estate. Residential construction credit quality may be impacted by the overall health of the economy, including unemployment rates and housing prices. Commercial – Loans in this segment are made to businesses and are generally secured by assets of the business. Repayment is expected from the cash flows of the business. A weakened economy, and resultant decreased consumer spending, will have an effect on the credit quality in this segment. Home equity line of credit – Loans in this segment include home equity loans and lines of credit underwritten with a loan-to-value ratio generally limited to no more than 80%, including any first mortgage. Our home equity lines of credit have a 9 year 10 month draw period followed by a 20 year amortization period and adjustable rates of interest which are indexed to the prime rate. The overall health of the economy, including unemployment rates and housing prices, may have an effect on the credit quality in this segment. Other – Includes installment, collateral, demand, revolving credit and resort loans to customers with acceptable credit ratings residing primarily in our market area. Installment and collateral consumer loans generally consist of loans on new and used automobiles, loans collateralized by deposit accounts, and unsecured personal loans. The overall health of the economy, including unemployment rates and housing prices, may have an effect on the credit quality in this segment. The resort portfolio consists of a direct receivable loan outside the Northeast which is amortizing to its contractual obligations. The Bank has exited the resort financing market with a residual portfolio remaining. Allocated component: The allocated component relates to loans that are classified as impaired. Impairment is measured on a loan by loan basis for commercial real estate, construction and commercial loans by the present value of expected cash flows discounted at the effective interest rate; the fair value of the collateral, if applicable; or the observable market price for the loan. An allowance is established when the discounted cash flows (or collateral value) of the impaired loan is lower than the carrying value of that loan. The Company does not separately identify individual consumer and residential real estate loans for impairment disclosures, unless such loans are subject to a troubled debt restructuring agreement or they are nonaccrual loans with outstanding balances greater than $100,000. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan-by-loan basis for commercial and construction loans by the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s obtainable market price or the fair value of the collateral if the loan is collateral dependent. Management updates the analysis quarterly. The assumptions used in appraisals are reviewed for appropriateness. Updated appraisals or valuations are obtained as needed or adjusted to reflect the estimated decline in the fair value based upon current market conditions for comparable properties. The Company periodically may agree to modify the contractual terms of loans. When a loan is modified and a concession is made to a borrower experiencing financial difficulty, the modification is considered a troubled debt restructuring ("TDR"). All TDRs are classified as impaired. Unallocated component: An unallocated component is maintained, when needed, to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating allocated and general reserves in the portfolio. The Company’s Loan Policy allows management to utilize a high and low range of 0.0% to 5.0% of our total allowance for loan losses when establishing an unallocated allowance, when considered necessary. The unallocated allowance is used to provide for an unidentified loss that may exist in emerging problem loans that cannot be fully quantified or may be affected by conditions not fully understood as of the balance sheet date. There was no unallocated allowance at September 30, 2017 and December 31, 2016. Troubled Debt Restructuring A loan is considered a troubled debt restructuring (“TDR”) when the Company, for economic or legal reasons related to the borrower’s financial difficulties, grants a concession to the borrower in modifying or renewing the loan the Company would not otherwise consider. In connection with troubled debt restructurings, terms may be modified to fit the ability of the borrower to repay in line with their current financial status, which may include a reduction in the interest rate to market rate or below, a change in the term or movement of past due amounts to the back-end of the loan or refinancing. A loan is placed on non-accrual status upon being restructured, even if it was not previously, unless the modified loan was current for the six months prior to its modification and we believe the loan is fully collectable in accordance with its new terms. The Company’s policy to restore a restructured loan to performing status is dependent on the receipt of regular payments, generally for a period of six months and one calendar year-end. All troubled debt restructurings are classified as impaired loans and are reviewed for impairment by management on a quarterly basis per Company policy. Foreclosed Real Estate Real estate acquired through foreclosure comprises properties acquired in partial or total satisfaction of problem loans. The properties are acquired through foreclosure proceedings or acceptance of a deed in lieu of foreclosure. At the time these properties are foreclosed, the properties are initially recorded at the fair value at the date of foreclosure less estimated selling costs. Losses arising at the time of acquisition of such properties are charged against the allowance for loan losses. Subsequent loss provisions are charged to the foreclosed real estate valuation allowance and expenses incurred to maintain the properties are charged to noninterest expense. Properties are evaluated regularly to ensure the recorded amounts are supported by current fair values, and a charge to operations is recorded as necessary to reduce the carrying amount to fair value less estimated costs to dispose. Revenue and expense from the operation of other real estate owned and the provision to establish and adjust valuation allowances are included in noninterest expenses. Costs relating to the development and improvement of the property are capitalized, subject to the limit of fair value of the collateral. In the Consolidated Statements of Financial Condition, total prepaid expenses and other assets include foreclosed real estate of $-0- as of September 30, 2017 and December 31, 2016, with no specific valuation allowance. The recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process according to local requirements of the applicable jurisdiction totaled $4.1 million at September 30, 2017. Pension and Other Postretirement Benefit Plans The Company’s non-contributory defined-benefit pension plan and certain defined benefit postretirement plans were frozen as of February 28, 2013 and no additional benefits will accrue. The Company has a non-contributory defined benefit pension plan that provides benefits for substantially all employees hired before January 1, 2007 who meet certain requirements as to age and length of service. The benefits are based on years of service and average compensation, as defined in the Plan Document. The Company’s funding practice is to meet the minimum funding standards established by the Employee Retirement Income Security Act of 1974. In addition to providing pension benefits, we provide certain health care and life insurance benefits for retired employees. Participants or eligible employees hired before January 1, 1993 become eligible for the benefits if they retire after reaching age 62 with fifteen or more years of service. A fixed percent of annual costs are paid depending on length of service at retirement. The Company accrues for the estimated costs of these other post-retirement benefits through charges to expense during the years that employees render service. The Company makes contributions to cover the current benefits paid under this plan. The Company believes the policy for determining pension and other post-retirement benefit expenses is critical because judgments are required with respect to the appropriate discount rate, rate of return on assets and other items. The Company reviews and updates the assumptions annually. If the Company’s estimate of pension and post-retirement expense is too low it may experience higher expenses in the future, reducing its net income. If the Company’s estimate is too high, it may experience lower expenses in the future, increasing its net income. Income Taxes Deferred income taxes are provided for differences arising in the timing of income and expenses for financial reporting and for income tax purposes. Deferred income taxes and tax benefits 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 basis. 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 Company provides a deferred tax asset valuation allowance for the estimated future tax effects attributable to temporary differences and carryforwards when realization is determined not to be more likely than not. FASB ASC 740-10 prescribes a recognition threshold that a tax position is required to meet before being recognized in the financial statements and provides guidance on derecognition, measurement, classification, interest and penalties, accounting in interim periods, disclosure and transition issues. Pursuant to FASB ASC 740-10, the Company examines its financial statements, its income tax provision and its federal and state income tax returns and analyzes its tax positions, including permanent and temporary differences, as well as the major components of income and expense to determine whether a tax benefit is more likely than not to be sustained upon examination by tax authorities. The Company recognizes interest and penalties arising from income tax settlements as part of its provision for income taxes. Reclassifications Amounts in prior period consolidated financial statements are reclassified whenever necessary to conform to the current year presentation. Recent Accounting Pronouncements In August 2015, the FASB issued Accounting Standards Update “ASU” No. 2015-14 "Revenue from Contracts with Customers (Topic 606)." In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), with an original effective date for annual reporting periods beginning after December 15, 2016. The core principle of the guidance is that an entity should recognize revenue to depict 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 those goods and services. ASU 2015-14 deferred the effective date of ASU 2014-09 to annual periods and interim periods within those annual periods beginning after December 15, 2017. The amendments can be applied retrospectively to each prior reporting period or retrospectively with the cumulative effect of initially applying this Update recognized at the date of initial application. Since the guidance does not apply to revenue associated with financial instruments, including loans and securities that are accounted for under other GAAP, the Company does not expect the new guidance to have a material impact on revenue most closely associated with financial instruments, including interest income and expense. The Company's fees for customer services, brokerage and insurance fee income items are within the scope of the ASU 2014-09. The timing of the Company's revenue recognition regarding these items is not expected to materially change. However, we do expect that the standard will result in new disclosure requirements, which are currently being evaluated. The Company plans to adopt ASU No. 2014-09 on January 1, 2018 utilizing the modified retrospective approach with a cumulative effect adjustment to opening retained earnings, if such adjustment is deemed to be material. In January 2016, the FASB issued ASU 2016-01, "Financial Instruments—Overall (Topic 825-10): "Recognition and Measurement of Financial Assets and Financial Liabilities." ASU 2016-01 amends the guidance on the classification and measurement of financial instruments. Some of the amendments in ASU 2016-01 include the following: 1) requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income; 2) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment; 3) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; and 4) requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value; among others. For public business entities, the amendments of ASU 2016-01 are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company is assessing the impact of ASU 2016-01 on its accounting and disclosures. In February 2016, the FASB issued ASU No. 2016-02 "Leases (Topic 842)." ASU 2016-02 supersedes Topic 840, Leases. This ASU is to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. Some of the provisions in ASU 2016-02 include the following: 1) requires lessees to recognize a right-of-use asset and a lease liability for virtually all of their leases (other than leases that meet the definition of a short-term lease), 2) requires lessor accounting to be updated to align with certain changes to the lessee model and the new revenue recognition standard, 3) an arrangement contains an embedded lease if property, plant, or equipment is explicitly or implicitly identified and its use is controlled by the customer, 4) in certain circumstances, the lessee is required to remeasure the lease payments, and 5) requires extensive quantitative and qualitative disclosures, including significant judgments made by management, will be required to provide greater insight into the extent of revenue and expense recognized and expected to be recognized from existing contracts. For public business entities, ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company is assessing the impact of ASU 2016-02 on its accounting and disclosures. In March 2016, the FASB issued ASU No. 2016-07 "Investments – Equity Method and Joint Ventures (Topic 323) Simplifying the Transition to the Equity Method of Accounting." This ASU eliminates the requirement that when an investment qualifies for use of the equity method as a result of an increase in the level of ownership interest or degree of influence, an investor must adjust the investment, results of operations, and retained earnings retroactively on a step-by step basis as if the equity method had been in effect during all previous periods that the investment had been held. The amendments require that the equity method investor add the cost of acquiring the additional interest in the investee to the current basis of the investor’s previously held interest and adopt the equity method of accounting as of the date the investment becomes qualified for equity method accounting. Therefore, upon qualifying for the equity method of accounting, no retroactive adjustment of the investment is required. For public business entities, ASU 2016-07 is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. The amendments should be applied prospectively upon their effective date to increases in the level of ownership interest or degree of influence that result in the adoption of the equity method. Earlier application is permitted. The Company adopted ASU 2016-09 and it had no impact on its accounting and disclosures. In June 2016, the FASB issued ASU No. 2016-13 "Financial Instruments - Credit Losses (Topic 326)" requires an entity to utilize a new impairment model known as the current expected credit loss ("CECL") model to estimate its lifetime "exp

Restrictions on Cash and Due fr

Restrictions on Cash and Due from Banks	9 Months Ended
	Sep. 30, 2017
Restrictions On Cash and Due From Banks [Abstract]
Restrictions on Cash and Due from Banks	2. Restrictions on Cash and Due from Banks The Company is required to maintain a percentage of transaction account balances on deposit in non-interest-earning reserves with the Federal Reserve Bank, offset by the Company’s average vault cash. The Company also is required to maintain cash balances to collateralize the Company’s position with certain third parties. The Company had cash and liquid assets of approximately $12.9 million and $9.5 million to meet these requirements at September 30, 2017 and December 31, 2016, respectively.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Share	3. Earnings Per Share The following table sets forth the calculation of basic and diluted earnings per share: Three Months Ended September 30, Nine Months Ended September 30, (Dollars in thousands, except per share data): 2017 2016 2017 2016 Net income $ 5,597 $ 3,773 $ 15,692 $ 11,029 Less: Dividends to participating shares (4 ) - (10 ) (18 ) Income allocated to participating shares (6 ) (15 ) (15 ) (58 ) Net income allocated to common stockholders $ 5,587 $ 3,758 $ 15,667 $ 10,953 Weighted-average shares issued 17,975,443 17,968,628 17,970,204 17,974,118 Less: Average unallocated ESOP shares (802,697 ) (897,948 ) (826,300 ) (921,630 ) Average treasury stock (2,001,571 ) (2,156,167 ) (2,014,869 ) (2,167,900 ) Average unvested restricted stock (27,796 ) (90,599 ) (22,557 ) (114,306 ) Weighted-average basic shares outstanding 15,143,379 14,823,914 15,106,478 14,770,282 Plus: Average dilutive shares 677,280 368,092 661,699 322,827 Weighted-average diluted shares outstanding 15,820,659 15,192,006 15,768,177 15,093,109 Net earnings per share (1) Basic $ 0.37 $ 0.25 $ 1.04 $ 0.74 Diluted $ 0.35 $ 0.25 $ 0.99 $ 0.73 (1) Certain per share amounts may not appear to reconcile due to rounding. For the three months ended September 30, 2017 and 2016, respectively, 4,003 and 44,000 options were anti-dilutive and therefore excluded from the earnings per share calculation.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Investment Securities	4. Investment Securities Investment securities are summarized as follows: September 30, 2017 Recognized in OCI Not Recognized in OCI Gross Gross Gross Gross Amortized Unrealized Unrealized Carrying Unrealized Unrealized Fair (Dollars in thousands) Cost Gains Losses Value Gains Losses Value Available-for-sale Debt securities: U.S. Treasury obligations $ 22,843 $ 168 $ - $ 23,011 $ - $ - $ 23,011 U.S. Government agency obligations 54,000 30 (197 ) 53,833 - - 53,833 Government sponsored residential mortgage-backed securities 2,869 140 - 3,009 - - 3,009 Corporate debt securities 500 2 - 502 - - 502 Preferred equity securities 2,000 - (150 ) 1,850 - - 1,850 Marketable equity securities 108 80 - 188 - - 188 Mutual funds 5,155 - (249 ) 4,906 - - 4,906 Total securities available-for-sale $ 87,475 $ 420 $ (596 ) $ 87,299 $ - $ - $ 87,299 Held-to-maturity U.S. Treasury obligations $ 4,990 $ - $ - $ 4,990 $ 58 $ - $ 5,048 U.S. Government agency obligations 31,000 - - 31,000 - (154 ) 30,846 Government sponsored residential mortgage-backed securities 20,858 - - 20,858 203 - 21,061 Total securities held-to-maturity $ 56,848 $ - $ - $ 56,848 $ 261 $ (154 ) $ 56,955 December 31, 2016 Recognized in OCI Not Recognized in OCI Gross Gross Gross Gross Amortized Unrealized Unrealized Carrying Unrealized Unrealized Fair (Dollars in thousands) Cost Gains Losses Value Gains Losses Value Available-for-sale Debt securities: U.S. Treasury obligations $ 19,826 $ 142 $ - $ 19,968 $ - $ - $ 19,968 U.S. Government agency obligations 73,996 67 (352 ) 73,711 - - 73,711 Government sponsored residential mortgage-backed securities 3,424 145 - 3,569 - - 3,569 Corporate debt securities 500 15 - 515 - - 515 Preferred equity securities 2,000 - (254 ) 1,746 - - 1,746 Marketable equity securities 108 75 (1 ) 182 - - 182 Mutual funds 4,071 - (242 ) 3,829 - - 3,829 Total securities available-for-sale $ 103,925 $ 444 $ (849 ) $ 103,520 $ - $ - $ 103,520 Held-to-maturity U.S. Government agency obligations $ 16,000 $ - $ - $ 16,000 $ - $ (83 ) $ 15,917 Government sponsored residential mortgage-backed securities 17,061 - - 17,061 63 - 17,124 Total securities held-to-maturity $ 33,061 $ - $ - $ 33,061 $ 63 $ (83 ) $ 33,041 The following tables summarize gross unrealized losses and fair value, aggregated by investment category and length of time the investments have been in a continuous unrealized loss position at September 30, 2017 and December 31, 2016: September 30, 2017 Less than 12 Months 12 Months or More Total Gross Gross Gross Number of Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Securities Value Loss Value Loss Value Loss Available-for-sale: U.S. Government agency obligations 7 $ 15,926 $ (74 ) $ 30,877 $ (123 ) $ 46,803 $ (197 ) Preferred equity securities 1 - - 1,850 (150 ) 1,850 (150 ) Mutual funds 1 - - 4,905 (249 ) 4,905 (249 ) 9 $ 15,926 $ (74 ) $ 37,632 $ (522 ) $ 53,558 $ (596 ) Held-to-maturity U.S. Government agency obligations 5 $ 30,846 $ (154 ) $ - $ - $ 30,846 $ (154 ) Total investment securities in an unrealized loss position 14 $ 46,772 $ (228 ) $ 37,632 $ (522 ) $ 84,404 $ (750 ) December 31, 2016 Less than 12 Months 12 Months or More Total Gross Gross Gross Number of Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Securities Value Loss Value Loss Value Loss Available-for-sale: U.S. Government agency obligations 10 $ 66,644 $ (352 ) $ - $ - $ 66,644 $ (352 ) Preferred equity securities 1 - - 1,746 (254 ) 1,746 (254 ) Marketable equity securities 1 - - 6 (1 ) 6 (1 ) Mutual funds 1 - - 3,830 (242 ) 3,830 (242 ) 13 $ 66,644 $ (352 ) $ 5,582 $ (497 ) $ 72,226 $ (849 ) Held-to-maturity U.S. Government agency obligations 2 $ 11,917 $ (83 ) $ - $ - $ 11,917 $ (83 ) Total investment securities in an unrealized loss position 15 $ 78,561 $ (435 ) $ 5,582 $ (497 ) $ 84,143 $ (932 ) Management believes that no individual unrealized loss as of September 30, 2017 represents an other-than-temporary impairment (“OTTI”), based on its detailed review of the securities portfolio. The Company has no intent to sell nor is it more likely than not that the Company will be required to sell any of the securities in a loss position during the period of time necessary to recover the unrealized losses, which may be until maturity. The following summarizes the conclusions from our OTTI evaluation for those security types that incurred significant gross unrealized losses greater than twelve months as of September 30, 2017: Preferred equity securities - The unrealized loss on preferred equity securities in a loss position for 12 months or more relates to one preferred equity security. This investment is in a global financial institution. When estimating the recovery period for securities in an unrealized loss position, management utilizes analyst forecasts, earnings assumptions and other company-specific financial performance metrics. In addition, this assessment incorporates general market data, industry and sector cycles and related trends to determine a reasonable recovery period. Management evaluated the near-term prospects of the issuer in relation to the severity and duration of the impairment. Management concluded that the preferred equity security is not other-than-temporarily impaired at September 30, 2017. Mutual funds - The unrealized loss on mutual funds in a loss position for 12 months or more relates to one mutual fund. The fund invests primarily in high quality debt securities and other debt instruments supporting the affordable housing industry in areas of the United States designated by fund shareholders. When estimating the recovery period for securities in an unrealized loss position, management utilizes analyst forecasts, earnings assumptions and other fund-specific financial performance metrics. In addition, this assessment incorporates general market data, industry and sector cycles and related trends to determine a reasonable recovery period. Management evaluated the near-term prospects of the fund in relation to the severity and duration of the impairment. Management concluded that the mutual fund is not other-than-temporarily impaired at September 30, 2017. The Company recorded no other-than-temporary impairment charges to the investment securities portfolios for the nine months ended September 30, 2017 and 2016. There were no gross realized gains on sales of securities available-for-sale for the nine months ended September 30, 2017 and 2016. As of September 30, 2017 and December 31, 2016, U.S. Treasury, U.S. Government agency obligations and Government sponsored residential mortgage-backed securities with a fair value of $115.8 million and $102.4 million, respectively, were pledged as collateral for loan derivatives, public funds, repurchase liabilities and repurchase agreement borrowings. The amortized cost and estimated fair value of debt securities at September 30, 2017 and December 31, 2016 by contractual maturity are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or repay obligations with or without call or repayment penalties: September 30, 2017 Available-for-Sale Held-to-Maturity Estimated Estimated Amortized Fair Amortized Fair (Dollars in thousands) Cost Value Cost Value Due in one year or less $ 39,496 $ 39,443 $ - $ - Due after one year through five years 37,847 37,903 30,990 30,919 Due after five years through ten years - - 5,000 4,975 Due after ten years - - - - Government sponsored residential mortgage-backed securities 2,869 3,009 20,858 21,061 $ 80,212 $ 80,355 $ 56,848 $ 56,955 December 31, 2016 Available-for-Sale Held-to-Maturity Estimated Estimated Amortized Fair Amortized Fair (Dollars in thousands) Cost Value Cost Value Due in one year or less $ 33,475 $ 33,490 $ - $ - Due after one year through five years 60,847 60,704 16,000 15,917 Due after five years through ten years - - - - Due after ten years - - - - Government sponsored residential mortgage-backed securities 3,424 3,569 17,061 17,124 $ 97,746 $ 97,763 $ 33,061 $ 33,041 Federal Home Loan Bank of Boston (“FHLBB”) Stock The Company, as a member of the FHLBB, owned $16.0 million and $16.4 million of FHLBB capital stock at September 30, 2017 and December 31, 2016, respectively, which is equal to its FHLBB capital stock requirement. The Company evaluated its FHLBB capital stock for potential other-than-temporary impairment at September 30, 2017. Capital adequacy, credit ratings, the value of the stock, overall financial condition of the FHLB system and FHLBB as well as current economic factors were analyzed in the impairment analysis. The Company concluded that its position in FHLBB capital stock is not other-than-temporarily impaired at September 30, 2017. Alternative Investments Alternative investments, which totaled $2.1 million and $2.2 million at September 30, 2017 and December 31, 2016, respectively, are included in other assets in the accompanying Consolidated Statements of Financial Condition. The Company’s alternative investments include investments in certain non-public funds, which include limited partnerships, an equity fund and membership stocks. These investments are held at cost and were evaluated for potential other-than-temporary impairment at September 30, 2017. The Company recognized a $10,000 and $219,000 other-than-temporary impairment charge on its limited partnerships for the nine months ended September 30, 2017 and 2016, respectively, included in other noninterest income in the accompanying Consolidated Statements of Income. The Company recognized profit distributions in its limited partnerships of $240,000 and $179,000 for the nine months ended September 30, 2017 and 2016, respectively. See a further discussion of fair value in Note 15 - Fair Value Measurements. The Company has $1.6 million in unfunded commitments remaining for its alternative investments as of September 30, 2017.

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Loans and Allowance for Loan Losses	5. Loans and Allowance for Loan Losses Loans consisted of the following: September 30, December 31, (Dollars in thousands) 2017 2016 Real estate: Residential $ 969,679 $ 907,946 Commercial 1,028,930 979,370 Construction 86,713 49,679 Commercial 436,172 430,539 Home equity line of credit 166,791 170,786 Other 5,733 5,348 Total loans 2,694,018 2,543,668 Net deferred loan costs 4,595 3,844 Loans 2,698,613 2,547,512 Allowance for loan losses (22,202 ) (21,529 ) Loans, net $ 2,676,411 $ 2,525,983 Changes in the allowance for loan losses by segments are as follows: For the Three Months Ended September 30, 2017 (Dollars in thousands) Balance at Charge-offs Recoveries Provision for Balance at Real estate: Residential $ 4,254 $ (46 ) $ 14 $ (202 ) $ 4,020 Commercial 11,633 - - 79 11,712 Construction 651 - - 109 760 Commercial 4,077 (24 ) 45 175 4,273 Home equity line of credit 1,379 - - 13 1,392 Other 43 (48 ) 7 43 45 $ 22,037 $ (118 ) $ 66 $ 217 $ 22,202 For the Three Months Ended September 30, 2016 (Dollars in thousands) Balance at Charge-offs Recoveries Provision for Balance at Real estate Residential $ 3,744 $ (57 ) $ - $ 157 $ 3,844 Commercial 10,489 - - 151 10,640 Construction 327 - - 102 429 Commercial 4,630 (28 ) - 177 4,779 Home equity line of credit 1,491 (13 ) - 55 1,533 Other 39 (64 ) 7 56 38 $ 20,720 $ (162 ) $ 7 $ 698 $ 21,263 For the Nine Months Ended September 30, 2017 (Dollars in thousands) Balance at Charge-offs Recoveries Provision for Balance at Real estate: Residential $ 4,134 $ (79 ) $ 15 $ (50 ) $ 4,020 Commercial 11,131 (111 ) 2 690 11,712 Construction 425 - - 335 760 Commercial 4,400 (346 ) 45 174 4,273 Home equity line of credit 1,398 - - (6 ) 1,392 Other 41 (128 ) 23 109 45 $ 21,529 $ (664 ) $ 85 $ 1,252 $ 22,202 For the Nine Months Ended September 30, 2016 (Dollars in thousands) Balance at Charge-offs Recoveries Provision for Balance at Real estate: Residential $ 4,084 $ (81 ) $ 1 $ (160 ) $ 3,844 Commercial 10,255 - - 385 10,640 Construction 231 - - 198 429 Commercial 4,119 (370 ) 10 1,020 4,779 Home equity line of credit 1,470 (13 ) - 76 1,533 Other 39 (222 ) 24 197 38 $ 20,198 $ (686 ) $ 35 $ 1,716 $ 21,263 The following table lists the allocation of the allowance by impairment methodology and by loan segment at September 30, 2017 and December 31, 2016: September 30, 2017 December 31, 2016 (Dollars in thousands) Total Reserve Total Reserve Loans individually evaluated for impairment: Real estate: Residential $ 12,715 $ 122 $ 12,778 $ 145 Commercial 8,587 - 12,363 14 Construction 4,532 - 4,532 - Commercial 1,569 59 2,029 112 Home equity line of credit 1,983 - 1,864 - Other 538 6 707 7 29,924 187 34,273 278 Loans collectively evaluated for impairment: Real estate: Residential $ 962,805 $ 3,898 $ 900,352 $ 3,989 Commercial 1,019,141 11,712 965,718 11,117 Construction 82,181 760 45,147 425 Commercial 434,559 4,214 428,466 4,288 Home equity line of credit 164,808 1,392 168,922 1,398 Other 5,195 39 4,634 34 2,668,689 22,015 2,513,239 21,251 Total $ 2,698,613 $ 22,202 $ 2,547,512 $ 21,529 Nonperforming assets consist of non-accruing loans including non-accruing loans identified as troubled debt restructurings, loans past due more than 90 days and still accruing interest and other real estate owned. The following table lists nonperforming assets at: September 30, December 31, (Dollars in thousands) 2017 2016 Nonaccrual loans: Real estate: Residential $ 9,022 $ 9,846 Commercial 73 976 Construction 4,532 4,532 Commercial 868 1,301 Home equity line of credit 754 862 Other 56 44 Total nonaccruing loans 15,305 17,561 Loans 90 days past due and still accruing - - Other real estate owned - - Total nonperforming assets $ 15,305 $ 17,561 The following is a summary of loan delinquencies at recorded investment values at September 30, 2017 and December 31, 2016: September 30, 2017 30-59 Days 60-89 Days > 90 Days Past Due 90 Past Due Past Due Past Due Total and Still (Dollars in thousands) Number Amount Number Amount Number Amount Number Amount Accruing Real estate: Residential 15 $ 2,948 13 $ 2,091 19 $ 7,254 47 $ 12,293 $ - Commercial - - - - - - - - - Construction - - - - 1 4,532 1 4,532 - Commercial - - - - 1 25 1 25 - Home equity line of credit 2 372 - - 3 362 5 734 - Other 9 192 2 15 2 17 13 224 - Total 26 $ 3,512 15 $ 2,106 26 $ 12,190 67 $ 17,808 $ - December 31, 2016 30-59 Days 60-89 Days > 90 Days Past Due 90 Past Due Past Due Past Due Total and Still (Dollars in thousands) Number Amount Number Amount Number Amount Number Amount Accruing Real estate: Residential 10 $ 1,226 6 $ 1,529 23 $ 7,979 39 $ 10,734 $ - Commercial 1 193 - - 1 888 2 1,081 - Construction - - - - 1 4,532 1 4,532 - Commercial 1 54 - - 3 319 4 373 - Home equity line of credit - - 2 85 3 377 5 462 - Other 7 66 1 23 - - 8 89 - Total 19 $ 1,539 9 $ 1,637 31 $ 14,095 59 $ 17,271 $ - The following is a summary of information pertaining to impaired loans at September 30, 2017 and December 31, 2016: September 30, 2017 December 31, 2016 Unpaid Unpaid Recorded Principal Related Recorded Principal Related (Dollars in thousands) Investment Balance Allowance Investment Balance Allowance Impaired loans without a valuation allowance: Real estate: Residential $ 11,748 $ 13,645 $ - $ 11,046 $ 12,833 $ - Commercial 8,587 8,621 - 9,496 9,636 - Construction 4,532 4,532 - 4,532 4,532 - Commercial 1,501 1,791 - 1,784 2,027 - Home equity line of credit 1,983 2,037 - 1,864 1,909 - Other 514 533 - 682 700 - Total 28,865 31,159 - 29,404 31,637 - Impaired loans with a valuation allowance: Real estate: Residential 967 985 122 1,732 1,796 145 Commercial - - - 2,867 2,867 14 Construction - - - - - - Commercial 68 859 59 245 894 112 Home equity line of credit - - - - - - Other 24 24 6 25 25 7 Total 1,059 1,868 187 4,869 5,582 278 Total impaired loans $ 29,924 $ 33,027 $ 187 $ 34,273 $ 37,219 $ 278 The following table summarizes average recorded investment and interest income recognized on impaired loans: Three Months Nine Months Three Months Nine Months Ended Ended Ended Ended September 30, September 30, September 30, September 30, September 30, September 30, 2017 2017 2017 2016 2016 2016 Average Interest Interest Average Interest Interest Recorded Income Income Recorded Income Income (Dollars in thousands) Investment Recognized Recognized Investment Recognized Recognized Impaired loans without a valuation allowance: Real estate: Residential $ 11,599 $ 33 $ 91 $ 11,394 $ 22 $ 71 Commercial 8,772 101 293 12,850 125 396 Construction 4,532 - - 4,719 - 69 Commercial 1,458 7 16 2,552 8 27 Home equity line of credit 1,956 13 32 1,417 9 18 Other 597 6 21 859 8 26 Total 28,914 160 453 33,791 172 607 Impaired loans with a valuation allowance: Real estate: Residential 1,182 13 27 876 8 33 Commercial 1,430 - 51 2,900 35 105 Construction - - - - - - Commercial 102 - - 1,256 1 3 Home equity line of credit - - - - - - Other 25 - - 33 - 1 Total 2,739 13 78 5,065 44 142 Total impaired loans $ 31,653 $ 173 $ 531 $ 38,856 $ 216 $ 749 There was no interest income recognized on a cash basis method of accounting for the three and nine months ended September 30, 2017 and 2016. The following tables present information on loans whose terms had been modified in a troubled debt restructuring at September 30, 2017 and December 31, 2016: September 30, 2017 TDRs on Accrual Status TDRs on Nonaccrual Status Total TDRs (Dollars in thousands) Number of Recorded Number of Recorded Number of Recorded Real estate: Residential 19 $ 3,207 11 $ 4,212 30 $ 7,419 Commercial 2 626 - - 2 626 Construction - - 1 4,532 1 4,532 Commercial 2 305 4 791 6 1,096 Home equity line of credit 14 1,345 1 314 15 1,659 Other 5 523 1 15 6 538 Total 42 $ 6,006 18 $ 9,864 60 $ 15,870 December 31, 2016 TDRs on Accrual Status TDRs on Nonaccrual Status Total TDRs (Dollars in thousands) Number of Recorded Number of Recorded Number of Recorded Real estate: Residential 15 $ 2,581 9 $ 4,433 24 $ 7,014 Commercial 2 3,333 - - 2 3,333 Construction - - 1 4,532 1 4,532 Commercial 3 485 6 1,047 9 1,532 Home equity line of credit 8 1,075 1 58 9 1,133 Other 5 686 1 20 6 706 Total 33 $ 8,160 18 $ 10,090 51 $ 18,250 The recorded investment balances of TDRs were $15.9 million and $18.3 million at September 30, 2017 and December 31, 2016, respectively. TDRs on accrual status were $6.0 million and $8.2 million while TDRs on nonaccrual status were $9.9 million and $10.1 million at September 30, 2017 and December 31, 2016, respectively. At September 30, 2017, 100% of the accruing TDRs have been performing in accordance with the restructured terms. At September 30, 2017 and December 31, 2016, the allowance for loan losses included specific reserves of $128,000 and $160,000 related to TDRs, respectively. For the nine months ended September 30, 2017 and 2016, the Bank had charge-offs totaling $81,000 and $28,000, respectively, related to portions of TDRs deemed to be uncollectible. The Bank may provide additional funds to borrowers in TDR status. The amount of additional funds available to borrowers in TDR status was $18,000 and $369,000 at September 30, 2017 and December 31, 2016, respectively. The following tables include the recorded investment and number of modifications for modified loans. The Company reports the recorded investment in the loans prior to a modification and also the recorded investment in the loans after the loans were restructured for the three and nine months ended September 30, 2017 and 2016: For the Three Months Ended September 30, 2017 For the Nine Months Ended September 30, 2017 (Dollars in thousands) Number of Recorded Recorded Investment After Modification (1) Number of Recorded Recorded Investment After Modification (1) Troubled Debt Restructurings: Real estate: Residential 1 $ 140 $ 140 7 $ 1,093 $ 1,089 Commercial 1 171 171 1 171 171 Home equity line of credit 3 349 349 6 533 532 Total 5 $ 660 $ 660 $ 14 $ 1,797 $ 1,792 For the Three Months Ended September 30, 2016 For the Nine Months Ended September 30, 2016 (Dollars in thousands) Number of Recorded Recorded Investment After Modification (1) Number of Recorded Recorded Investment After Modification (1) Troubled Debt Restructurings: Real estate Residential 1 $ 231 $ 231 1 $ 231 $ 231 Commercial 1 117 117 1 117 117 Home equity line of credit - - - 6 985 982 Total 2 $ 348 $ 348 $ 8 $ 1,333 $ 1,330 (1) The period end balances are inclusive of all partial paydowns and charge-offs since the modification date. TDRs fully paid off, charged-off or foreclosed upon by period end are not included. The following tables provide TDR loans that were modified by means of extended maturity, below market adjusted interest rates, a combination of rate and maturity, or by other means including covenant modifications, forbearance and/or the concessions and borrowers discharged in bankruptcy for the three and nine months ended September 30, 2017 and 2016: For the Three Months Ended September 30, 2017 (Dollars in thousands) Number of Extended Maturity (1) Adjusted Interest Rates (1) Combination of Rate and Maturity (1) Other (1) Total Real estate: Residential 1 $ - $ - $ - $ 140 $ 140 Commercial 1 - - - 171 171 Home equity line of credit 3 - - - 349 349 Total 5 $ - $ - $ - $ 660 $ 660 For the Nine Months Ended September 30, 2017 (Dollars in thousands) Number of Extended Maturity (1) Adjusted Interest Rates (1) Combination of Rate and Maturity (1) Other (1) Total Real estate: Residential 7 $ 90 $ - $ 336 $ 663 $ 1,089 Commercial 1 - - - 171 171 Home equity line of credit 6 88 - - 444 532 Total 14 $ 178 $ - $ 336 $ 1,278 $ 1,792 For the Three Months Ended September 30, 2016 (Dollars in thousands) Number of Extended Maturity (1) Adjusted Interest Rates (1) Combination of Rate and Maturity (1) Other (1) Total Real estate Residential 1 $ - $ - $ - $ 231 $ 231 Commercial 1 117 - - - 117 Total 2 $ 117 $ - $ - $ 231 $ 348 For the Nine Months Ended September 30, 2016 (Dollars in thousands) Number of Extended Maturity (1) Adjusted Interest Rates (1) Combination of Rate and Maturity (1) Other (1) Total Real estate Residential 1 $ - $ - $ - $ 231 $ 231 Commercial 1 117 - - - 117 Home equity line of credit 6 - - - 982 982 Total 8 $ 117 $ - $ - $ 1,213 $ 1,330 (1) The period end balances are inclusive of all partial paydowns and charge-offs since the modification date. TDRs fully paid off, charged-off or foreclosed upon by period end are not included. A TDR is considered to be in re-default once it is more than 30 days past due following a modification. There was one construction loan totaling $4.5 million that defaulted and had been modified as a TDR during the twelve month period preceding the default date during the nine months ended September 30, 2017. There were no loans that defaulted and had been modified as a TDR during the twelve month period preceding the default date for the three months ended September 30, 2017 and 2016 and for the nine months ended September 30, 2016. Credit Quality Information At the time of loan origination, a risk rating based on a nine point grading system is assigned to each commercial-related loan based on the loan officer’s and management’s assessment of the risk associated with each particular loan. This risk assessment is based on an in depth analysis of a variety of factors. More complex loans and larger commitments require the Company’s internal credit risk management department further evaluate the risk rating of the individual loan or relationship, with credit risk management having final determination of the appropriate risk rating. These more complex loans and relationships receive ongoing periodic review to assess the appropriate risk rating on a post-closing basis with changes made to the risk rating as the borrower’s and economic conditions warrant. The Company’s risk rating system is designed to be a dynamic system and we grade loans on a “real time” basis. The Company places considerable emphasis on risk rating accuracy, risk rating justification, and risk rating triggers. The Company’s risk rating process has been enhanced with its implementation of industry-based risk rating “cards.” The cards are used by the loan officers and promote risk rating accuracy and consistency on an institution-wide basis. Most loans are reviewed annually as part of a comprehensive portfolio review conducted by management and/or by an independent loan review firm. More frequent reviews of loans rated low pass, special mention, substandard and doubtful are conducted by the credit risk management department. The Company utilizes an independent loan review consulting firm to review its rating accuracy and the overall credit quality of its loan portfolio. The review is designed to provide an evaluation of the portfolio with respect to risk rating profile as well as with regard to the soundness of individual loan files. The individual loan reviews include an analysis of the creditworthiness of obligors, via appropriate key ratios and cash flow analysis and an assessment of collateral protection. The consulting firm conducts two loan reviews per year aiming at a 65.0% or higher commercial and industrial loans and commercial real estate portfolio penetration. Summary findings of all loan reviews performed by the outside consulting firm are reported to the board of directors and senior management of the Company upon completion. The Company utilizes a point risk rating scale as follows: Risk Rating Definitions Residential and consumer loans are not rated unless they are 45 days or more delinquent, in which case, depending on past-due days, they will be rated 6, 7 or 8. Loans rated 1 – 5, 55 Commercial loans in these categories are considered “pass” rated loans with low to average risk. Loans rated 6 Residential, Consumer and Commercial loans in this category are considered “special mention.” These loans are starting to show signs of potential weakness and are being closely monitored by management. Loans rated 7: Loans in this category are considered “substandard.” Generally, a loan is considered substandard if it is inadequately protected by the current net worth and paying capacity of the obligors and/or the collateral pledged. There is a distinct possibility that the Company will sustain some loss if the weakness is not corrected. Loans rated 8: Loans in this category are considered “doubtful.” Loans classified as doubtful have all the weaknesses inherent in those classified substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, highly questionable and improbable. Loans rated 9: Loans in this category are considered uncollectible (“loss”) and of such little value that their continuance as loans is not warranted. The following table presents the Company’s loans by risk rating at September 30, 2017 and December 31, 2016: September 30, 2017 (Dollars in thousands) Pass Special Mention Substandard Doubtful Total Real estate: Residential $ 958,934 $ 1,049 $ 9,696 $ - $ 969,679 Commercial 1,015,826 5,009 8,095 - 1,028,930 Construction 82,181 - 4,532 - 86,713 Commercial 398,228 24,805 13,139 - 436,172 Home equity line of credit 165,963 74 754 - 166,791 Other 5,657 21 55 - 5,733 Total Loans $ 2,626,789 $ 30,958 $ 36,271 $ - $ 2,694,018 December 31, 2016 (Dollars in thousands) Pass Special Mention Substandard Doubtful Total Real estate: Residential $ 896,861 $ 852 $ 10,233 $ - $ 907,946 Commercial 968,109 1,991 9,270 - 979,370 Construction 45,147 - 4,532 - 49,679 Commercial 413,900 3,914 12,725 - 430,539 Home equity line of credit 169,834 83 869 - 170,786 Other 5,257 24 67 - 5,348 Total Loans $ 2,499,108 $ 6,864 $ 37,696 $ - $ 2,543,668 The Company places considerable emphasis on the early identification of problem assets, problem-resolution and minimizing loss exposure. Delinquency notices are mailed monthly to all delinquent borrowers, advising them of the amount of their delinquency. Residential and consumer lending borrowers are typically given 30 days to pay the delinquent payments or to contact us to make arrangements to bring the loan current over a longer period of time. Generally, if a residential or consumer lending borrower fails to bring the loan current within 90 days from the original due date or to make arrangements to cure the delinquency over a longer period of time, the matter is referred to legal counsel and foreclosure or other collection proceedings are initiated. The Company may consider forbearance or a loan restructuring in certain circumstances where a temporary loss of income is the primary cause of the delinquency, and if a reasonable plan is presented by the borrower to cure the delinquency in a reasonable period of time after his or her income resumes. Problem or delinquent borrowers in our commercial real estate and commercial business portfolios are handled on a case-by-case basis, typically by our Special Assets Department. Appropriate problem-resolution and workout strategies are formulated based on the specific facts and circumstances.

Mortgage Servicing Rights

Mortgage Servicing Rights	9 Months Ended
	Sep. 30, 2017
Mortgage Servicing Rights [Abstract]
Mortgage Servicing Rights	6. Mortgage Servicing Rights The Company services residential real estate mortgage loans that it has sold without recourse to third parties. The carrying value of mortgage servicing rights was $5.3 million and $4.8 million at September 30, 2017 and December 31, 2016, respectively, and the balance is included in prepaid expenses and other assets in the accompanying Consolidated Statements of Financial Condition. The fair value of mortgage servicing rights approximated $6.9 million and $6.2 million at September 30, 2017 and December 31, 2016, respectively. Mortgage servicing rights impairment totaling $-0- and $283,000 for the nine months ended September 30, 2017 and 2016, respectively, is included as a component of other noninterest income in the accompanying Consolidated Statements of Income. Total loans sold with servicing rights retained were $86.9 million and $106.9 million for the nine months ended September 30, 2017 and 2016, respectively. The net gain on loans sold totaled $2.0 million and $2.2 million for the nine months ended September 30, 2017 and 2016, respectively, and is included in the accompanying Consolidated Statements of Income. The principal balance of loans serviced for others, which are not included in the accompanying Consolidated Statements of Financial Condition, totaled $585.1 million and $540.4 million at September 30, 2017 and December 31, 2016, respectively. Loan servicing fees for others totaling $1.0 million and $897,000 for the nine months ended September 30, 2017 and 2016, respectively, are included as a component of other noninterest income in the accompanying Consolidated Statements of Income.

Credit Arrangements

Credit Arrangements	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Credit Arrangements	7. Credit Arrangements The Company has access to a pre-approved line of credit with the Federal Home Loan Bank of Boston (“FHLBB”) for $8.8 million, which was undrawn at September 30, 2017 and December 31, 2016. The Company has access to pre-approved unsecured lines of credit with financial institutions totaling $58.5 million which were undrawn at September 30, 2017 and December 31, 2016. The Company maintains a cash balance of $512,500 with certain financial institutions to avoid fees associated with the lines. In accordance with an agreement with the FHLBB, the Company is required to maintain qualified collateral, as defined in the FHLBB Statement of Credit Policy, free and clear of liens, pledges and encumbrances, as collateral for the advances, if any, and the preapproved line of credit. The Company is in compliance with these collateral requirements. FHLBB advances totaled $271.5 million and $287.1 million at September 30, 2017 and December 31, 2016, respectively. Advances from the FHLBB are collateralized by first residential and commercial mortgages and home equity lines of credit with an estimated eligible collateral value of $1.4 billion at September 30, 2017 and December 31, 2016. The Company had available borrowings of $591.3 million and $544.7 million at September 30, 2017 and December 31, 2016, respectively, subject to collateral requirements of the FHLBB. The Company also had letters of credit of $79.5 million and $83.5 million at September 30, 2017 and December 31, 2016, respectively, subject to collateral requirements of the FHLBB. The Company is required to acquire and hold shares of capital stock in the FHLBB in an amount at least equal to the sum of 0.35% of the aggregate principal amount of its unpaid residential mortgage loans and similar obligations at the beginning of each year, or up to 4.5% of its advances (borrowings) from the FHLBB. The carrying value of FHLBB stock approximates fair value based on the redemption provisions of the stock. The Company participates in the Federal Reserve Bank’s discount window loan collateral program that enables the Company to borrow up to $66.7 million and $64.2 million on an overnight basis at September 30, 2017 and December 31, 2016, respectively, and was undrawn as of September 30, 2017 and December 31, 2016. The funding arrangement was collateralized by $129.4 million and $128.7 million in pledged commercial real estate loans as of September 30, 2017 and December 31, 2016, respectively. The Bank has a Master Repurchase Agreement borrowing facility with a broker. Borrowings under the Master Repurchase Agreement are secured by the Company’s investments in certain securities and cash with a fair value of $11.2 million and $11.3 million at September 30, 2017 and December 31, 2016, respectively. Outstanding borrowings totaled $10.5 million at September 30, 2017 and December 31, 2016. The Bank offers overnight repurchase liability agreements to commercial or municipal customers whose excess deposit account balances are swept daily into collateralized repurchase liability accounts. The overnight repurchase liability agreements do not contain master netting arrangements. The Bank had repurchase liabilities outstanding of $21.5 million and $18.9 million at September 30, 2017 and December 31, 2016, respectively. They are secured by the Company’s investment in specific issues of U.S. Treasury obligations, Government sponsored residential mortgage-backed securities and U.S. Government agency obligations with a market value of $23.9 million and $30.2 million as of September 30, 2017 and December 31, 2016, respectively.

Deposits

Deposits	9 Months Ended
	Sep. 30, 2017
Banking and Thrift [Abstract]
Deposits	8. Deposits Deposit balances are as follows: September 30, December 31, (Dollars in thousands) 2017 2016 Noninterest-bearing demand deposits $ 437,372 $ 441,283 Interest-bearing NOW accounts 652,631 542,764 Money market 549,674 532,681 Savings accounts 233,330 233,792 Time deposits 509,544 464,570 Total interest-bearing deposits 1,945,179 1,773,807 Total deposits $ 2,382,551 $ 2,215,090 The Company has established a relationship to participate in a reciprocal deposit program with other financial institutions as a service to our customers. This program provides enhanced FDIC insurance to participating customers. Currently, this program is not being utilized. The Company also has established a relationship for brokered deposits. There were brokered deposits totaling $38.9 million and $43.2 million at September 30, 2017 and December 31, 2016, respectively. Time certificates of deposit in denominations of $250,000 or more approximated $120.1 million and $99.8 million at September 30, 2017 and December 31, 2016, respectively.

Pension and Other Postretiremen

Pension and Other Postretirement Benefit Plans	9 Months Ended
	Sep. 30, 2017
Compensation and Retirement Disclosure [Abstract]
Pension and Other Postretirement Benefit Plans	9. Pension and Other Postretirement Benefit Plans The following tables set forth the components of net periodic pension and benefit costs. Pension Benefits Other Postretirement Benefits Three Months Ended September 30, Three Months Ended September 30, (Dollars in thousands) 2017 2016 2017 2016 Service cost $ - $ - $ 14 $ 14 Interest cost 251 264 25 30 Expected return on plan assets (295 ) (279 ) - - Amortization: Loss 176 176 - - Prior service cost - - (13 ) (13 ) Recognized net gain - - (2 ) - Net periodic benefit cost $ 132 $ 161 $ 24 $ 31 Pension Benefits Other Postretirement Benefits Nine Months Ended September 30, Nine Months Ended September 30, (Dollars in thousands) 2017 2016 2017 2016 Service cost $ - $ - $ 43 $ 42 Interest cost 751 789 76 90 Expected return on plan assets (886 ) (835 ) - - Amortization: - Loss 530 528 - - Prior service cost - - (38 ) (38 ) Recognized net gain - - (6 ) - Net periodic benefit cost $ 395 $ 482 $ 75 $ 94 The Company’s non-contributory defined-benefit pension plan and certain defined benefit postretirement plans were frozen as of February 28, 2013 and no additional benefits will accrue. The Company’s funding practice is to meet the minimum funding standards established by the Employee Retirement Income Security Act of 1974. Since the supplemental plan and the postretirement benefit plans are unfunded, the Company accrues for the estimated costs of these plans through charges to expense during the year that employees render service. The Company makes contributions to cover the current benefits paid under these plans. Employee Stock Ownership Plan The Company established the ESOP to provide eligible employees the opportunity to own Company stock. The Company provided a loan to the Farmington Bank Employee Stock Ownership Plan Trust in the amount needed to purchase up to 1,430,416 shares of the Company’s common stock. The loan bears an interest rate equal to the Wall Street Journal Prime Rate plus one percentage point, adjusted annually, and provides for annual payments of interest and principal over the 15 year term of the loan. At September 30, 2017, the loan had an outstanding balance of $11.1 million and an interest rate of 4.75%. The Bank has committed to make contributions to the ESOP sufficient to support the debt service of the loan. The loan is secured by the unallocated shares purchased. The ESOP compensation expense was $1.8 million and $1.2 million for the nine months ended September 30, 2017 and 2016, respectively. Shares held by the ESOP include the following as of September 30, 2017: Allocated 572,166 Committed to be released 71,325 Unallocated 786,925 1,430,416 The fair value of unallocated ESOP shares was $21.1 million at September 30, 2017.

Stock Incentive Plans

Stock Incentive Plans	9 Months Ended
	Sep. 30, 2017
Disclosure Of Compensation Related Costs, Share-Based Payments [Abstract]
Stock Incentive Plans	10. Stock Incentive Plans In August 2012, the Company implemented the First Connecticut Bancorp, Inc. 2012 Stock Incentive Plan (the “2012 Plan”). The 2012 Plan provides for a total of 2,503,228 shares of common stock for issuance upon the grant or exercise of awards. The Plan allows for the granting of 1,788,020 non-qualified stock options and 715,208 shares of restricted stock. In May 2016, the Company’s shareholders approved the First Connecticut Bancorp, Inc. 2016 Stock Incentive Plan (the “2016 Plan”) replacing the 2012 Plan. The 2016 Plan provides for a total of 300,000 shares of common stock for issuance upon the grant or exercise of awards. Under the 2012 Plan, stock options granted vested 20% immediately and will vest 20% at each annual anniversary of the grant date and expire ten years after grant date. Under the 2016 Plan, stock options granted vest at each annual anniversary of the grant date over a 3 year period and expire ten years after grant date. The Company recognizes compensation expense for the fair values of these awards, which vest on a straight-line basis over the requisite service period of the awards. The Company classifies share-based compensation for employees within “Salaries and employee benefits” and share-based payments for outside directors within “Other operating expenses” in the Consolidated Statements of Income. For the three months ended September 30, 2017 and 2016, the Company recorded $144,000 and $481,000 of share-based compensation expense, respectively, comprised of $21,000 and $199,000 of stock option expense, respectively and $124,000 and $282,000 of restricted stock expense, respectively. For the nine months ended September 30, 2017 and 2016, the Company recorded $328,000 and $1.8 million of share-based compensation expense, respectively, comprised of $61,000 and $726,000 of stock option expense, respectively and $267,000 and $1.1 million of restricted stock expense, respectively. Expected future compensation expense relating to the 53,800 non-vested options outstanding at September 30, 2017 is $206,000 over the remaining weighted-average period of 2.40 years. Expected future compensation expense relating to the 28,698 non-vested restricted stock outstanding at September 30, 2017 is $533,000 over the remaining weighted-average period of 2.43 years. The fair value of the options awarded is estimated on the date of grant using the Black-Scholes option pricing model that uses the assumptions noted in the following table. Expected volatility is based on the Company’s historical volatility. Prior to July 1, 2017, expected volatility was based on the Company’s historical volatility and the historical volatility of a peer group as the Company did not have reliably determined stock price for the period needed that was at least equal to its expected term and the Company’s historical volatility may not have reflected future expectations. The peer group consisted of financial institutions located in New England and the Mid-Atlantic regions of the United States based on whose common stock is traded on a national securities exchange, asset size, tangible capital ratio and earnings factors. The expected term of options granted is derived from using the simplified method due to the Company not having sufficient historical share option experience upon which to estimate an expected term. The risk-free rate is based on the grant date for a traded zero-coupon U.S. Treasury bond with a term equal to the option’s expected term. Weighted-average assumptions for the nine months ended September 30, 2017 and 2016: 2017 2016 Weighted per share average fair value of options granted $ 5.07 $ 3.00 Weighted-average assumptions: Risk-free interest rate 1.99 % 1.53 % Expected volatility 22.26 % 22.88 % Expected dividend yield 2.16 % 2.13 % Weighted-average dividend yield 2.07% - 2.39 % 1.91 - 2.25 % Expected life of options granted 6.0 years 6.0 years The following is a summary of the Company’s stock option activity and related information for its option grants for the nine months ended September 30, 2017. Number of Weighted-Average Weighted-Average Aggregate Outstanding at December 31, 2016 1,460,376 $ 13.14 Granted 26,900 26.08 Exercised (49,550 ) 13.52 Forfeited (300 ) 16.39 Expired - - Outstanding at September 30, 2017 1,437,426 $ 13.36 5.16 $ 19,235 Exercisable at September 30, 2017 1,383,626 $ 13.06 5.02 $ 18,937 The total intrinsic value of options exercised during the nine months ended September 30, 2017 was $565,000. The following is a summary of the status of the Company’s restricted stock for the nine months ended September 30, 2017. Restricted Stock Awards Time-Based Restricted Stock Units Performance-Based Restricted Stock Units Number of Weighted-Average Number of Weighted-Average Number of Weighted-Average Unvested at December 31, 2016 - $ - - $ - - $ - Granted 5,698 24.61 14,012 24.48 14,686 21.60 Vested (5,698 ) 24.61 - - - - Forfeited - - - - - - Unvested at September 30, 2017 $ - $ - $ 14,012 $ 24.27 $ 14,686 $ 21.60 Restricted stock awards: On a semi-annual basis, stock awards are granted to the Bank’s directors as share-based compensation and vest upon grant date. The Company recognizes compensation expense for the fair value of these awards using the Company's common stock closing price at the date of grant. Time-based restricted stock units: Time-based restricted stock units vest over a service period of three years. The Company recognizes compensation expense for the fair value of these units using the Company's common stock closing price at the date of grant, which vest on a straight-line basis over the requisite service period of the units. Performance-based restricted stock units: Performance-based restricted stock units vests after a three year performance period with a two year holding period. The units vest with a share quantity in a range from zero to 150% dependent on the Company’s average return on average assets and earnings per share, each weighted 50%. The Company recognizes compensation expense over the vesting period, based on a fair value calculated using the Chaffe model. In this model, the discount is estimated as the value of an at-the money put option with a life equal to the restriction period, divided by the price of a fully liquid share of stock. Compensation expense is subject to adjustment based on management's assessment of the Company's performance relative to the target number of shares performance criteria.

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	11. Derivative Financial Instruments Non-Hedge Accounting Derivatives/Non-designated Hedges: The Company does not use derivatives for trading or speculative purposes. Interest rate swap derivatives not designated as hedges are offered to certain qualifying commercial customers and to manage the Company’s exposure to interest rate movements but do not meet the strict hedge accounting definition under FASB ASC 815, “Derivatives and Hedging”. The interest rate swap agreements enable these customers to synthetically fix the interest rate on variable interest rate loans. The customers pay a variable rate and enter into a fixed rate swap agreement with the Company. The credit risk associated with the interest rate swap derivatives executed with these customers is essentially the same as that involved in extending loans and is subject to the Company’s normal credit policies. The Company obtains collateral, if needed, based upon its assessment of the customers’ credit quality. Generally, interest rate swap agreements are offered to “pass” rated customers requesting long-term commercial loans or commercial mortgages in amounts generally of at least $1.0 million. The interest rate swap agreement with our customers is cross-collateralized by the loan collateral. The interest rate swap agreements do not have any embedded interest rate caps or floors. For every variable interest rate swap agreement entered into with a commercial customer, the Company simultaneously enters into a fixed rate interest rate swap agreement with a correspondent bank, agreeing to pay a fixed income stream and receive a variable interest rate swap. The Company is party to master netting agreements with its correspondent banks; however, the Company does not offset assets and liabilities for financial statement presentation purposes. The master netting agreements provide for a single net settlement of all swap agreements, as well as collateral, in the event of default on, or termination of, any one contract. Collateral generally in the form of cash is received or posted by the counterparty with the net liability position, in accordance with contract thresholds. As of September 30, 2017, the Company maintained a cash balance of $7.3 million with a correspondent bank to collateralize its position. The Company has an agreement with a correspondent bank to secure any outstanding receivable in excess of $10.0 million. Credit-risk-related Contingent Features The Company’s agreements with its derivative counterparties contain the following provisions: · if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default on its derivative obligations; · if the Company fails to maintain its status as a well/adequately capitalized institution, then the counterparty could terminate the derivative positions, and the Company would be required to settle its obligations under the agreements; · if the Company fails to maintain a specified minimum leverage ratio, then the Company could be declared in default on its derivative obligations; and · if a specified event or condition occurs that materially changes the Company’s creditworthiness in an adverse manner, it may be required to fully collateralize its obligations under the derivative instrument. The Company is in compliance with the above provisions as of September 30, 2017. The Company has established a derivatives policy which sets forth the parameters for such transactions (including underwriting guidelines, rate setting process, maximum maturity, approval and documentation requirements), as well as identifies internal controls for the management of risks related to these hedging activities (such as approval of counterparties, limits on counterparty credit risk, maximum loan amounts, and limits to single dealer counterparties). The interest rate swap derivatives executed with our customers and our counterparties, are marked to market and are included with prepaid expenses and other assets and accrued expenses and other liabilities on the Consolidated Statements of Financial Condition at fair value. The Company had the following outstanding interest rate swaps that were not designated for hedge accounting: September 30, 2017 December 31, 2016 (Dollars in thousands) Consolidated # of Notional Estimated # of Notional Estimated Commercial loan customer interest rate swap position Other Assets 61 $ 310,307 $ 7,709 51 $ 242,351 $ 7,095 Commercial loan customer interest rate swap position Other Liabilities 28 (127,605 ) (3,774 ) 33 148,097 (4,502 ) Counterparty interest rate swap position Other Liabilities 89 (437,912 ) (4,031 ) 84 390,448 (2,687 ) The Company recorded the changes in the fair value of non-hedge accounting derivatives as a component of other noninterest income except for interest received and paid which is reported in interest income in the accompanying Consolidated Statements of Income as follows: For The Three Months Ended September 30, 2017 2016 (Dollars in thousands) Interest Income MTM Gain Net Impact Interest Income MTM Gain Net Impact Commercial loan customer interest rate swap position $ (972 ) $ (154 ) $ (1,126 ) $ (1,468 ) $ (1,594 ) $ (3,062 ) Counterparty interest rate swap position 972 154 1,126 1,468 1,594 3,062 Total $ - $ - $ - $ - $ - $ - For The Nine Months Ended September 30, 2017 2016 (Dollars in thousands) Interest Income MTM Gain Net Impact Interest Income MTM Gain Net Impact Commercial loan customer interest rate swap position $ (3,342 ) $ 614 $ (2,728 ) $ (4,281 ) $ 13,388 $ 9,107 Counterparty interest rate swap position 3,342 (614 ) 2,728 4,281 (13,388 ) (9,107 ) Total $ - $ - $ - $ - $ - $ - Mortgage Banking Derivatives Certain derivative instruments, primarily forward sales of mortgage loans and mortgage-backed securities (“MBS”) are utilized by the Company in its efforts to manage risk of loss associated with its mortgage loan commitments and mortgage loans held for sale. Prior to closing and funding certain single-family residential mortgage loans, an interest-rate lock commitment is generally extended to the borrower. During the period from commitment date to closing date, the Company is subject to the risk that market rates of interest may change. If market rates rise, investors generally will pay less to purchase such loans resulting in a reduction in the gain on sale of the loans or, possibly, a loss. In an effort to mitigate such risk, forward delivery sales commitments, under which the Company agrees to deliver whole mortgage loans to various investors or issue MBS, are established. At September 30, 2017, the notional amount of outstanding rate locks totaled approximately $20.7 million. The notional amount of outstanding commitments to sell residential mortgage loans totaled approximately $19.6 million, which included mandatory forward commitments totaling approximately $12.5 million at September 30, 2017. The forward commitments establish the price to be received upon the sale of the related mortgage loan, thereby mitigating certain interest rate risk. There is, however, still certain execution risk specifically related to the Company’s ability to close and deliver to its investors the mortgage loans it has committed to sell.

Offsetting of Financial Assets

Offsetting of Financial Assets and Liabilities	9 Months Ended
	Sep. 30, 2017
Offsetting Of Financial Assets And Liabilities [Abstract]
Offsetting of Financial Assets and Liabilities	12. Offsetting of Financial Assets and Liabilities The following tables present the remaining contractual maturities of the Company’s repurchase agreement borrowings and repurchase liabilities as of September 30, 2017 and December 31, 2016, disaggregated by the class of collateral pledged. September 30, 2017 December 31, 2016 Remaining Contractual Maturity of the Agreements Remaining Contractual Maturity of the Agreements (Dollars in thousands) Overnight Up to One One Year to Total Overnight Up to One One Year to Total Repurchase agreement borrowings U.S. Government agency obligations $ - $ 6,000 $ - $ 6,000 $ - $ - $ 6,000 $ 6,000 Government sponsored residential mortgage-backed securities - 4,500 - 4,500 - - 4,500 4,500 Total repurchase agreement borrowings - 10,500 - 10,500 - - 10,500 10,500 Repurchase liabilities U.S. Government agency obligations 21,538 - - 21,538 18,867 - - 18,867 Total repurchase liabilities 21,538 - - 21,538 18,867 - - 18,867 Total $ 21,538 $ 10,500 $ - $ 32,038 $ 18,867 $ - $ 10,500 $ 29,367 The right of setoff for a repurchase agreement resembles a secured borrowing, whereby the collateral pledged by the Company would be used to settle the fair value of the repurchase agreements should the Company be in default (e.g., fail to make an interest payment to the counterparty). The collateral is held by a third party financial institution in the Company's trustee account. The counterparty has the right to sell or repledge the investment securities if the Company defaults. The Company is required by the counterparty to maintain adequate collateral levels. In the event the collateral fair value falls below stipulated levels, the Company will pledge additional securities. The Company closely monitors collateral levels to ensure adequate levels are maintained, while mitigating the potential risk of over-collateralization in the event of counterparty default. The following tables present the potential effect of rights of setoff associated with the Company’s recognized financial assets and liabilities at September 30, 2017 and December 31, 2016: September 30, 2017 Gross Amounts Not Offset in the Statement of (Dollars in thousands) Gross Amount Gross Amounts Net Amounts of Financial Securities Cash Net Interest rate swap derivatives $ 7,709 $ - $ 7,709 $ - $ - $ 7,250 $ 459 Total $ 7,709 $ - $ 7,709 $ - $ - $ 7,250 $ 459 September 30, 2017 Gross Amounts Not Offset in the Statement of (Dollars in thousands) Gross Amount Gross Amounts Net Amounts of Financial Securities Cash Net Interest rate swap derivatives $ 7,805 $ - $ 7,805 $ - $ - $ 7,250 $ 555 Repurchase agreement borrowings 10,500 - 10,500 - 10,245 255 - Total $ 18,305 $ - $ 18,305 $ - $ 10,245 $ 7,505 $ 555 December 31, 2016 Gross Amounts Not Offset in the Statement of (Dollars in thousands) Gross Amount Gross Amounts Net Amounts of Financial Securities Cash Net Interest rate swap derivatives $ 7,095 $ - $ 7,095 $ - $ - $ 2,000 $ 5,095 Total $ 7,095 $ - $ 7,095 $ - $ - $ 2,000 $ 5,095 December 31, 2016 Gross Amounts Not Offset in the Statement of (Dollars in thousands) Gross Amount Gross Amounts Net Amounts of Financial Securities Cash Net Interest rate swap derivatives $ 7,189 $ - $ 7,189 $ - $ - $ 2,000 $ 5,189 Repurchase agreement borrowings 10,500 - 10,500 - 10,500 - - Total $ 17,689 $ - $ 17,689 $ - $ 10,500 $ 2,000 $ 5,189

Financial Instruments with Off-

Financial Instruments with Off-Balance Sheet Risk	9 Months Ended
	Sep. 30, 2017
Financial Instruments With Off Balance Sheet Risk Disclosure [Abstract]
Financial Instruments with Off-Balance Sheet Risk	13. Financial Instruments with Off-Balance Sheet Risk The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and unused lines of credit. Those instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated Statements of Financial Condition. The contract amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. Financial instruments whose contract amounts represent credit risk are as follows: September 30, December 31, (Dollars in thousands) 2017 2016 Approved loan commitments $ 71,127 $ 102,436 Unadvanced portion of construction loans 42,687 57,124 Unused lines for home equity loans 208,005 199,191 Unused revolving lines of credit 332 355 Unused commercial letters of credit 4,621 3,820 Unused commercial lines of credit 236,999 246,622 $ 563,771 $ 609,548 Financial instruments with off-balance sheet risk had a valuation allowance of $33,000 and $153,000 as of September 30, 2017 and December 31, 2016, respectively. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained if deemed necessary by the Company upon extension of credit is based on management’s credit evaluation of the counterparty. Collateral held is primarily residential property and commercial assets. At September 30, 2017 and December 31, 2016, the Company had no off-balance sheet special purpose entities and participated in no securitizations of assets.

Significant Group Concentration

Significant Group Concentrations of Credit Risk	9 Months Ended
	Sep. 30, 2017
Risks and Uncertainties [Abstract]
Significant Group Concentrations of Credit Risk	14. Significant Group Concentrations of Credit Risk The Company primarily grants commercial, residential and consumer loans to customers located within its primary market area in the state of Connecticut and western Massachusetts. The majority of the Company’s loan portfolio is comprised of commercial and residential mortgages. The Company has no negative amortization or option adjustable rate mortgage loans.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	15. Fair Value Measurements Fair value estimates are made as of a specific point in time based on the characteristics of the financial instruments and relevant market information. In accordance with FASB ASC 820-10, the fair value estimates are measured within the fair value hierarchy. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy under FASB ASC 820-10 are described as follows: · Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; · Level 2 - Quoted prices in markets that are not active, or inputs that are observable either directly or indirectly, for substantially the full term of the asset or liability; · Level 3 - Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no market activity). Categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. When available, quoted market prices are used. In other cases, fair values are based on estimates using present value or other valuation techniques. These techniques involve uncertainties and are significantly affected by the assumptions used and judgments made regarding risk characteristics of various financial instruments, discount rates, and estimates of future cash flows, future expected loss experience and other factors. Changes in assumptions could significantly affect these estimates. Derived fair value estimates cannot be substantiated by comparison to independent markets and, in certain cases, could not be realized in an immediate sale of the instrument. Fair value estimates are based on existing financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not financial instruments. Accordingly, the aggregate fair value amounts presented do not purport to represent the underlying market value of the Company. There were no transfers between levels during the nine months ended September 30, 2017 and 2016. Assets and Liabilities Measured at Fair Value on a Recurring Basis The following is a description of the valuation methodologies used for instruments measured at fair value: Securities Available-for-Sale: The Company utilizes a third party, nationally-recognized pricing service (“pricing service”); subject to review by management, to estimate fair value measurements for the majority of its investment securities portfolio. The pricing service evaluates each asset class based on relevant market information considering observable data that may include dealer quotes, reported trades, market spreads, cash flows, the U.S. Treasury yield curve, the LIBOR swap yield curve, trade execution data, market prepayment speeds, credit information and the bond’s terms and conditions, among other things. The fair value prices on all investment securities are reviewed for reasonableness by management. Also, management assessed the valuation techniques used by the pricing service based on a review of their pricing methodology to ensure proper pricing and hierarchy classifications. Management employs procedures to monitor the pricing service’s assumptions and establishes processes to challenge the pricing service’s valuations that appear unusual or unexpected. Interest Rate Swap Derivatives: Forward loan sale commitments and derivative loan commitments: The following tables detail the financial instruments carried at fair value on a recurring basis as of September 30, 2017 and December 31, 2016 and indicate the fair value hierarchy of the valuation techniques utilized by the Company to determine the fair value: September 30, 2017 Quoted Prices in Significant Significant (Dollars in thousands) Total (Level 1) (Level 2) (Level 3) Assets U.S. Treasury obligations $ 23,011 $ 10,997 $ 12,014 $ - U.S. Government agency obligations 53,833 - 53,833 - Government sponsored residential mortgage-backed securities 3,009 - 3,009 - Corporate debt securities 502 - 502 - Preferred equity securities 1,850 1,850 - - Marketable equity securities 188 188 - - Mutual funds 4,906 - 4,906 - Securities available-for-sale 87,299 13,035 74,264 - Interest rate swap derivative 7,709 - 7,709 - Derivative loan commitments 129 - - 129 Total $ 95,137 $ 13,035 $ 81,973 $ 129 Liabilities Interest rate swap derivative $ 7,805 $ - $ 7,805 $ - Forward loan sales commitments 76 - - 76 Total $ 7,881 $ - $ 7,805 $ 76 December 31, 2016 Quoted Prices in Significant Significant (Dollars in thousands) Total (Level 1) (Level 2) (Level 3) Assets U.S. Treasury obligations $ 19,968 $ - $ 19,968 $ - U.S. Government agency obligations 73,711 - 73,711 - Government sponsored residential mortgage-backed securities 3,569 - 3,569 - Corporate debt securities 515 - 515 - Preferred equity securities 1,746 1,746 - - Marketable equity securities 182 182 - - Mutual funds 3,829 - 3,829 - Securities available-for-sale 103,520 1,928 101,592 - Interest rate swap derivative 7,095 - 7,095 - Derivative loan commitments 95 - - 95 Forward loan sales commitments 88 - - 88 Total $ 110,798 $ 1,928 $ 108,687 $ 183 Liabilities Interest rate swap derivative $ 7,189 $ - $ 7,189 $ - Total $ 7,189 $ - $ 7,189 $ - The following table presents additional information about assets measured at fair value for which the Company has utilized Level 3 inputs. Derivative and Forward Loan Sales Commitments, Net For the Three Months Ended September 30, For the Nine Months Ended September 30, (Dollars in thousands) 2017 2016 2017 2016 Balance, at beginning of period $ 131 $ 177 $ 183 $ 137 Total realized (loss) gain: Included in earnings (78 ) 106 (130 ) 146 Balance, at the end of period $ 53 $ 283 $ 53 $ 283 The following tables present the valuation methodology and unobservable inputs for Level 3 assets measured at fair value on a recurring basis at September 30, 2017 and December 31, 2016: September 30, 2017 Significant (Dollars in thousands) Fair Value Valuation Methodology Unobservable Inputs Input Derivative and forward loan sales commitments, net $ 53 Adjusted quoted prices in active markets Embedded servicing value 1.26 % December 31, 2016 Significant (Dollars in thousands) Fair Value Valuation Methodology Unobservable Inputs Input Derivative and forward loan sales commitments, net $ 183 Adjusted quoted prices in active markets Embedded servicing value 1.33 % The embedded servicing value represents the value assigned for mortgage servicing rights and based on management’s judgment. When the embedded servicing value increases or decreases there is a direct correlation with fair value. Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis Certain assets and liabilities are measured at fair value on a non-recurring basis in accordance with generally accepted accounting principles. These include assets that are measured at the lower of cost or market that were recognized at fair value below cost at the end of the period as well as assets that are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances, such as when there is evidence of impairment. The following table details the financial instruments carried at fair value on a nonrecurring basis at September 30, 2017 and December 31, 2016 and indicates the fair value hierarchy of the valuation techniques utilized by the Company to determine the fair value: September 30, 2017 December 31, 2016 Quoted Prices in Significant Significant Quoted Prices in Significant Significant Active Markets for Observable Unobservable Active Markets for Observable Unobservable Identical Assets Inputs Inputs Identical Assets Inputs Inputs (Dollars in thousands) (Level 1) (Level 2) (Level 3) (Level 1) (Level 2) (Level 3) Impaired loans $ - $ - $ 2,074 $ - $ - $ 3,727 The following is a description of the valuation methodologies used for instruments measured on a non-recurring basis: Mortgage Servicing Rights Loans Held for Sale: Impaired Loans: Other Real Estate Owned: The following tables present the valuation methodology and unobservable inputs for Level 3 assets measured at fair value on a non-recurring basis at September 30, 2017 and December 31, 2016: September 30, 2017 (Dollars in thousands) Fair Value Valuation Methodology Significant Range of Inputs Weighted Impaired loans $ 2,074 Appraisals Discount for dated appraisal 5% - 20% 12.50 % Discount for costs to sell 8% - 15% 11.50 % December 31, 2016 (Dollars in thousands) Fair Value Valuation Methodology Significant Range of Inputs Weighted Impaired loans $ 3,727 Appraisals Discount for dated appraisal 5% - 20% 12.50 % Discount for costs to sell 8% - 15% 11.50 % Disclosures about Fair Value of Financial Instruments The following methods and assumptions were used by the Company in estimating its fair value disclosure for financial instruments: Cash and cash equivalents: Investment in Federal Home Loan Bank of Boston (“FHLBB”) stock: Alternative Investments: Loans: Deposits: Borrowed funds: Repurchase liabilities: The following presents the carrying amount, fair value, and placement in the fair value hierarchy of the Company’s financial instruments as of September 30, 2017 and December 31, 2016. For short-term financial assets such as cash and cash equivalents, the carrying amount is a reasonable estimate of fair value due to the relatively short time between the origination of the instrument and its expected realization. September 30, 2017 December 31, 2016 Estimated Estimated Fair Value Carrying Fair Carrying Fair (Dollars in thousands) Hierarchy Level Amount Value Amount Value Financial assets Securities held-to-maturity Level 2 $ 56,848 $ 56,955 $ 33,061 $ 33,041 Securities available-for-sale See previous table 87,299 87,299 103,520 103,520 Loans Level 3 2,698,613 2,660,753 2,547,512 2,515,906 Loans held-for-sale Level 2 6,902 7,000 3,270 3,289 Mortgage servicing rights Level 3 5,269 6,886 4,817 6,166 Federal Home Loan Bank of Boston stock Level 2 15,954 15,954 16,378 16,378 Alternative investments Level 3 2,112 2,302 2,228 2,045 Interest rate swap derivatives Level 2 7,709 7,709 7,095 7,095 Derivative loan commitments Level 3 129 129 95 95 Forward loan sales commitments Level 3 - - 88 88 Financial liabilities Deposits other than time deposits Level 1 1,873,007 1,873,007 1,773,807 1,773,807 Time deposits Level 2 509,544 513,662 464,570 468,472 Federal Home Loan Bank of Boston advances Level 2 271,458 270,414 287,057 286,629 Repurchase agreement borrowings Level 2 10,500 10,438 10,500 10,428 Repurchase liabilities Level 2 21,538 21,528 18,867 18,862 Interest rate swap derivatives Level 2 7,805 7,805 7,189 7,189 Forward loan sales commitments Level 3 76 76 - -

Regulatory Matters

Regulatory Matters	9 Months Ended
	Sep. 30, 2017
Regulatory Matters Disclosure [Abstract]
Regulatory Matters	16. Regulatory Matters The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on their financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of their assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. The Company’s and the Bank’s capital amounts and classifications are also subject to quantitative judgments by the regulators about components, risk weightings and other factors. In July 2013, the Federal Reserve published final rules for the adoption of the Basel III regulatory capital framework (the "Basel III Capital Rules"). The Basel III Capital Rules, among other things, (i) introduced a new capital measure called "Common Equity Tier 1", (ii) specify that Tier 1 capital consists of Common Equity Tier 1 and "Additional Tier 1 Capital" instruments meeting specified requirements, (iii) define Common Equity Tier 1 narrowly by requiring that most deductions/adjustments to regulatory capital measures be made to Common Equity Tier 1 and not to the other components of capital and (iv) expand the scope of the deductions/adjustments as compared to existing regulations and a higher minimum Tier I capital requirement. Additionally, institutions must maintain a capital conservation buffer of common equity Tier 1 capital in an amount greater than 2.5% of total risk-weighted assets to avoid being subject to limitations on capital distributions and discretionary bonus payments to executive officers. The Basel III Capital Rules became effective for the Company beginning on January 1, 2015 with certain transition provisions fully phased in through January 1, 2019. Quantitative measures established by regulation to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios (set forth in the table below) of total capital, Tier I capital and common equity Tier I capital (as defined in the regulations) to risk-weighted assets (as defined in the regulations) and of Tier I capital (as defined in the regulations) to average assets (as defined in the regulations). Management believes, as of September 30, 2017 and December 31, 2016 that the Company and the Bank meet all capital adequacy requirements to which they are subject. The Federal Deposit Insurance Corporation categorizes the Company and the Bank as well capitalized under the regulatory framework for prompt corrective action as of September 30, 2017. To be categorized as well capitalized, the Company and the Bank must maintain minimum total risk-based, Tier I risk-based, common equity Tier I capital and Tier I leverage ratios as set forth in the table. There are no conditions or events since that notification that management believes have changed the institution’s category. The following table provides information on the capital amounts and ratios for the Company and the Bank: Minimum Required To Be Well Actual Purposes Action (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Farmington Bank: At September 30, 2017 Total Capital (to Risk Weighted Assets) $ 271,162 11.24 % $ 192,976 8.00 % $ 241,219 10.00 % Tier I Capital (to Risk Weighted Assets) 248,927 10.32 144,731 6.00 192,974 8.00 Common Equity Tier I Capital (to Risk Weighted Assets) 248,927 10.32 108,548 4.50 156,791 6.50 Tier I Leverage Capital (to Average Assets) 248,927 8.25 120,717 4.00 150,896 5.00 At December 31, 2016 Total Capital (to Risk Weighted Assets) $ 253,921 11.28 % $ 180,043 8.00 % $ 225,053 10.00 % Tier I Capital (to Risk Weighted Assets) 232,239 10.32 135,033 6.00 180,044 8.00 Common Equity Tier I Capital (to Risk Weighted Assets) 232,239 10.32 101,275 4.50 146,286 6.50 Tier I Leverage Capital (to Average Assets) 232,239 8.18 113,598 4.00 141,997 5.00 First Connecticut Bancorp, Inc.: At September 30, 2017 Total Capital (to Risk Weighted Assets) $ 301,448 12.50 % $ 192,995 8.00 % $ 241,243 10.00 % Tier I Capital (to Risk Weighted Assets) 279,213 11.57 144,745 6.00 192,993 8.00 Common Equity Tier I Capital (to Risk Weighted Assets) 279,213 11.57 108,559 4.50 156,807 6.50 Tier I Leverage Capital (to Average Assets) 279,213 9.23 120,980 4.00 151,225 5.00 At December 31, 2016 Total Capital (to Risk Weighted Assets) $ 288,273 12.80 % $ 180,113 8.00 % $ 225,141 10.00 % Tier I Capital (to Risk Weighted Assets) 266,591 11.84 135,084 6.00 180,112 8.00 Common Equity Tier I Capital (to Risk Weighted Assets) 266,591 11.84 101,313 4.50 146,341 6.50 Tier I Leverage Capital (to Average Assets) 266,591 9.39 113,624 4.00 142,030 5.00

Other Comprehensive Income

Other Comprehensive Income	9 Months Ended
	Sep. 30, 2017
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Other Comprehensive Income	17. Other Comprehensive Income The following table presents the changes in accumulated other comprehensive loss, net of tax by component: For the Three Months Ended September 30, 2017 (Dollars in thousands) Investment Employee Benefit Accumulated Balance at June 30, 2017 $ (148 ) $ (6,217 ) $ (6,365 ) Other comprehensive income during the period 32 - 32 Amount reclassified from accumulated other comprehensive income, net of tax - 105 105 Net change 32 105 137 Balance at September 30, 2017 $ (116 ) $ (6,112 ) $ (6,228 ) For the Three Months Ended September 30, 2016 (Dollars in thousands) Investment Employee Benefit Accumulated Balance at June 30, 2016 $ 247 $ (6,702 ) $ (6,455 ) Other comprehensive income during the period 5 - 5 Amount reclassified from accumulated other comprehensive income, net of tax - 106 106 Net change 5 106 111 Balance at September 30, 2016 $ 252 $ (6,596 ) $ (6,344 ) For the Nine Months Ended September 30, 2017 (Dollars in thousands) Investment Employee Benefit Accumulated Balance at December 31, 2016 $ (263 ) $ (6,427 ) $ (6,690 ) Other comprehensive income during the period 147 - 147 Amount reclassified from accumulated other comprehensive income, net of tax - 315 315 Net change 147 315 462 Balance at September 30, 2017 $ (116 ) $ (6,112 ) $ (6,228 ) For the Nine Months Ended September 30, 2016 (Dollars in thousands) Investment Employee Benefit Accumulated Balance at December 31, 2015 $ (249 ) $ (6,913 ) $ (7,162 ) Other comprehensive loss during the period 501 - 501 Amount reclassified from accumulated other comprehensive income, net of tax - 317 317 Net change 501 317 818 Balance at September 30, 2016 $ 252 $ (6,596 ) $ (6,344 ) The following tables present a reconciliation of the changes in components of other comprehensive income (loss) for the three and nine months ended September 30, 2017 and 2016, including the amount of income tax expense allocated to each component of other comprehensive income (loss): For the Three Months Ended September 30, 2017 (Dollars in thousands) Pre Tax Tax Benefit After Tax Unrealized gains on available-for-sale securities $ 51 $ (19 ) $ 32 Less: net security gains reclassified into other noninterest income - - - Net change in fair value of securities available-for-sale 51 (19 ) 32 Reclassification adjustment for prior service costs and net gain included in net periodic pension costs (1) 162 (57 ) 105 Total other comprehensive income $ 213 $ (76 ) $ 137 For the Three Months Ended September 30, 2016 (Dollars in thousands) Pre Tax Tax Benefit After Tax Unrealized gains on available-for-sale securities $ 8 $ (3 ) $ 5 Less: net security gains reclassified into other noninterest income - - - Net change in fair value of securities available-for-sale 8 (3 ) 5 Reclassification adjustment for prior service costs and net gain included in net periodic pension costs (1) 164 (58 ) 106 Total other comprehensive income $ 172 $ (61 ) $ 111 For the Nine Months Ended September 30, 2017 (Dollars in thousands) Pre Tax Tax Benefit After Tax Unrealized gains on available-for-sale securities $ 229 $ (82 ) $ 147 Less: net security gains reclassified into other noninterest income - - - Net change in fair value of securities available-for-sale 229 (82 ) 147 Reclassification adjustment for prior service costs and net gain included in net periodic pension costs (1) 487 (172 ) 315 Total other comprehensive income $ 716 $ (254 ) $ 462 For the Nine Months Ended September 30, 2016 (Dollars in thousands) Pre Tax Tax Benefit After Tax Unrealized gains on available-for-sale securities $ 776 $ (275 ) $ 501 Less: net security gains reclassified into other noninterest income - - - Net change in fair value of securities available-for-sale 776 (275 ) 501 Reclassification adjustment for prior service costs and net gain included in net periodic pension costs (1) 491 (174 ) 317 Total other comprehensive income $ 1,267 $ (449 ) $ 818 (1) Amounts are included in salaries and employee benefits in the unaudited Consolidated Statements of Income.

Legal Actions

Legal Actions	9 Months Ended
	Sep. 30, 2017
Loss Contingency [Abstract]
Legal Actions	18. Legal Actions The Company and its subsidiary are involved in various legal proceedings which have arisen in the normal course of business. The Company believes the resolution of these legal actions is not expected to have a material adverse effect on the Company’s consolidated financial statements.

Summary of Significant Accoun27

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2017
Accounting Policies [Abstract]
Basis of Financial Statement Presentation	Basis of Financial Statement Presentation The consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission. The Company has condensed or omitted certain information and footnote disclosures normally included in the consolidated financial statements in accordance with accounting principles generally accepted in the United States of America pursuant to such rules and regulations. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair statement have been included. All significant intercompany transactions and balances have been eliminated in consolidation. These consolidated financial statements should be read in conjunction with the audited consolidated financial statements as of and for the year ended December 31, 2016 included in the Company’s 10-K filed on March 13, 2017. The results of operations for the interim periods are not necessarily indicative of the results for the full year. In preparing the consolidated financial statements, management is required to make extensive use of estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the statement of condition and revenues and expenses for the interim period. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, investment security other-than-temporary impairment judgments and investment security valuation.
Investment Securities	Investment Securities Marketable equity and debt securities are classified as either trading, available-for-sale, or held-to-maturity (applies only to debt securities). Management determines the appropriate classifications of securities at the time of purchase. At September 30, 2017 and December 31, 2016, the Company had no debt or equity securities classified as trading. Held-to-maturity securities are debt securities for which the Company has the ability and intent to hold until maturity. All other securities not included in held-to-maturity are classified as available-for-sale. Held-to-maturity securities are recorded at amortized cost, adjusted for the amortization or accretion of premiums or discounts. Premiums and discounts on debt securities are amortized or accreted into interest income over the term of the securities using the level yield method. Available-for-sale securities are recorded at fair value. Unrealized gains and losses, net of the related tax effect, on available-for-sale securities are excluded from earnings and are reported in accumulated other comprehensive income, a separate component of equity, until realized. Further information relating to the fair value of securities can be found within Note 4 of the Notes to Consolidated Financial Statements. In accordance with Financial Accounting Standards Board Accounting Standards Codification ("FASB ASC") 320- “Debt and Equity Securities”, a decline in market value of a debt security below amortized cost that is deemed other-than-temporary is charged to earnings for the credit related other-than-temporary impairment ("OTTI"), resulting in the establishment of a new cost basis for the security, while the non-credit related OTTI is recognized in other comprehensive income if there is no intent or requirement to sell the security. The securities portfolio is reviewed on a quarterly basis for the presence of other-than-temporary impairment. If an equity security is deemed other-than-temporarily impaired, the full impairment is considered to be credit-related and a charge to earnings would be recorded. Gains and losses on sales of securities are recognized at the time of sale on a specific identification basis.
Loans Held for Sale	Loans Held for Sale Loans originated and intended for sale in the secondary market are carried at the lower of amortized cost or fair value, as determined by aggregate outstanding commitments from investors or current investor yield requirements. Net unrealized losses, if any, are recognized through a valuation allowance by charges to other noninterest income in the accompanying Consolidated Statements of Income. Gains or losses on sales of mortgage loans are recognized based on the difference between the selling price and the carrying value of the related mortgage loans sold on the trade date to net gain on loans sold in the accompanying Consolidated Statements of Income.
Loans	Loans The Company’s loan portfolio segments include residential real estate, commercial real estate, construction, commercial, home equity lines of credit and other. Construction includes classes for commercial and residential construction. Loans that management has the intent and ability to hold for the foreseeable future or until maturity or pay-off generally are reported at their outstanding unpaid principal balances adjusted for charge-offs, the allowance for loan losses, and any deferred fees or costs on originated loans. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the related loan yield using the interest method. When loans are prepaid, sold or participated out, the unamortized portion is recognized as income or expense at that time. Interest on loans is accrued and recognized in interest income based on contractual rates applied to principal amounts outstanding. Accrual of interest is discontinued, and previously accrued income is reversed, when loan payments are more than 90 days past due or when, in the judgment of management, collectability of the loan or loan interest becomes uncertain. Loans may be returned to accrual status when all principal and interest amounts contractually due (including arrearages) are reasonably assured of repayment within a reasonable period and there is a sustained period of repayment performance (generally a minimum of six months) by the borrower, in accordance with contractual terms involving payment of cash or cash equivalents. The interest on these loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual status. If a residential real estate, commercial real estate, construction, commercial, home equity line of credit and other loan is on non-accrual status cash payments are applied towards the reduction of principal. If loans are considered impaired but accruing, cash payments are applied first to interest income and then as a reduction of principal as specified in the contractual agreement, unless the collection of the remaining principal amount due is considered doubtful. The policy for determining past due or delinquency status for all loan portfolio segments is based on the number of days past due or the contractual terms of the loan. A loan is considered delinquent when the customer does not make their payments due according to their contractual terms. Generally, a loan can be demanded at any time if the loan is delinquent or if the borrower fails to meet any other agreed upon terms and conditions. On a quarterly basis, our loan policy requires that we evaluate for impairment all commercial loans classified as non-accrual, loans secured by real property in foreclosure or are otherwise likely to be impaired, non-accruing residential and home equity loan segments greater than $100,000 and all troubled debt restructurings. Nonperforming loans consist of non-accruing loans, non-accruing loans identified as trouble debt restructurings and loans past due more than 90 days and still accruing interest.
Allowance for Loan Losses	Allowance for Loan Losses The allowance for loan losses is maintained at a level believed adequate by management to absorb potential losses inherent in the loan portfolio as of the statement of condition date. The allowance for loan losses consists of a formula allowance following FASB ASC 450 – “Contingencies” and FASB ASC 310 – “Receivables”. The allowance for loan losses is established as losses are estimated to have occurred through a provision for loan losses charged to earnings. Loan losses are charged against the allowance when management believes the uncollectibility of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses is evaluated on a quarterly basis by management. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available. The allowance consists of general, allocated and unallocated components, as further described below. All reserves are available to cover any losses regardless of how they are allocated. General component: The general component of the allowance for loan losses is based on historical loss experience adjusted for qualitative factors stratified by the following loan segments: residential real estate, commercial real estate, construction, commercial, home equity line of credit and other. Construction loans include classes for commercial investment real estate construction, commercial owner occupied construction, residential development, residential subdivision construction and residential owner occupied construction loans. Management uses a rolling average of historical losses based on a time frame appropriate to capture relevant loss data for each loan segment. This historical loss factor is adjusted for the following qualitative factors: levels/trends in delinquencies and nonaccrual loans; trends in volume and terms of loans; effects of changes in risk selection and underwriting standards and other changes in lending policies, procedures and practices; experience/ability/depth of lending management and staff; and national and local economic trends and conditions. There were no material changes in the Company’s policies or methodology pertaining to the general component of the allowance for loan losses during the nine months ended September 30, 2017. The qualitative factors are determined based on the various risk characteristics of each loan segment. Risk characteristics relevant to each portfolio segment are as follows: Residential real estate – Residential real estate loans are generally originated in amounts up to 95.0% of the lesser of the appraised value or purchase price of the property, with private mortgage insurance required on loans with a loan-to-value ratio in excess of 80.0%. The Company does not grant subprime loans. All loans in this segment are collateralized by owner-occupied residential real estate and repayment is dependent on the credit quality of the individual borrower. All residential mortgage loans are underwritten pursuant to secondary market underwriting guidelines which include minimum FICO standards. The overall health of the economy, including unemployment rates and housing prices, will have an effect on the credit quality in this segment. Commercial real estate – Loans in this segment are primarily originated to finance income-producing properties throughout the northeastern states. The underlying cash flows generated by the properties may be adversely impacted by a downturn in the economy as evidenced by increased vacancy rates, which in turn, may have an effect on the credit quality in this segment. Management generally obtains rent rolls and other financial information, as appropriate on an annual basis and continually monitors the cash flows of these loans. Construction loans – Loans in this segment include commercial construction loans, real estate subdivision development loans to developers, licensed contractors and builders for the construction and development of commercial real estate projects and residential properties. Construction lending contains a unique risk characteristic as loans are originated under market and economic conditions that may change between the time of origination and the completion and subsequent purchaser financing of the property. In addition, construction subdivision loans and commercial and residential construction loans to contractors and developers entail additional risks as compared to single-family residential mortgage lending to owner-occupants. These loans typically involve large loan balances concentrated in single borrowers or groups of related borrowers. Real estate subdivision development loans to developers, licensed contractors and builders are generally speculative real estate development loans for which payment is derived from sale of the property. Credit risk may be affected by cost overruns, time to sell at an adequate price, and market conditions. Construction financing is generally considered to involve a higher degree of credit risk than longer-term financing on improved, owner-occupied real estate. Residential construction credit quality may be impacted by the overall health of the economy, including unemployment rates and housing prices. Commercial – Loans in this segment are made to businesses and are generally secured by assets of the business. Repayment is expected from the cash flows of the business. A weakened economy, and resultant decreased consumer spending, will have an effect on the credit quality in this segment. Home equity line of credit – Loans in this segment include home equity loans and lines of credit underwritten with a loan-to-value ratio generally limited to no more than 80%, including any first mortgage. Our home equity lines of credit have a 9 year 10 month draw period followed by a 20 year amortization period and adjustable rates of interest which are indexed to the prime rate. The overall health of the economy, including unemployment rates and housing prices, may have an effect on the credit quality in this segment. Other – Includes installment, collateral, demand, revolving credit and resort loans to customers with acceptable credit ratings residing primarily in our market area. Installment and collateral consumer loans generally consist of loans on new and used automobiles, loans collateralized by deposit accounts, and unsecured personal loans. The overall health of the economy, including unemployment rates and housing prices, may have an effect on the credit quality in this segment. The resort portfolio consists of a direct receivable loan outside the Northeast which is amortizing to its contractual obligations. The Bank has exited the resort financing market with a residual portfolio remaining. Allocated component: The allocated component relates to loans that are classified as impaired. Impairment is measured on a loan by loan basis for commercial real estate, construction and commercial loans by the present value of expected cash flows discounted at the effective interest rate; the fair value of the collateral, if applicable; or the observable market price for the loan. An allowance is established when the discounted cash flows (or collateral value) of the impaired loan is lower than the carrying value of that loan. The Company does not separately identify individual consumer and residential real estate loans for impairment disclosures, unless such loans are subject to a troubled debt restructuring agreement or they are nonaccrual loans with outstanding balances greater than $100,000. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan-by-loan basis for commercial and construction loans by the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s obtainable market price or the fair value of the collateral if the loan is collateral dependent. Management updates the analysis quarterly. The assumptions used in appraisals are reviewed for appropriateness. Updated appraisals or valuations are obtained as needed or adjusted to reflect the estimated decline in the fair value based upon current market conditions for comparable properties. The Company periodically may agree to modify the contractual terms of loans. When a loan is modified and a concession is made to a borrower experiencing financial difficulty, the modification is considered a troubled debt restructuring ("TDR"). All TDRs are classified as impaired. Unallocated component: An unallocated component is maintained, when needed, to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating allocated and general reserves in the portfolio. The Company’s Loan Policy allows management to utilize a high and low range of 0.0% to 5.0% of our total allowance for loan losses when establishing an unallocated allowance, when considered necessary. The unallocated allowance is used to provide for an unidentified loss that may exist in emerging problem loans that cannot be fully quantified or may be affected by conditions not fully understood as of the balance sheet date. There was no unallocated allowance at September 30, 2017 and December 31, 2016.
Troubled Debt Restructuring	Troubled Debt Restructuring A loan is considered a troubled debt restructuring (“TDR”) when the Company, for economic or legal reasons related to the borrower’s financial difficulties, grants a concession to the borrower in modifying or renewing the loan the Company would not otherwise consider. In connection with troubled debt restructurings, terms may be modified to fit the ability of the borrower to repay in line with their current financial status, which may include a reduction in the interest rate to market rate or below, a change in the term or movement of past due amounts to the back-end of the loan or refinancing. A loan is placed on non-accrual status upon being restructured, even if it was not previously, unless the modified loan was current for the six months prior to its modification and we believe the loan is fully collectable in accordance with its new terms. The Company’s policy to restore a restructured loan to performing status is dependent on the receipt of regular payments, generally for a period of six months and one calendar year-end. All troubled debt restructurings are classified as impaired loans and are reviewed for impairment by management on a quarterly basis per Company policy.
Foreclosed Real Estate	Foreclosed Real Estate Real estate acquired through foreclosure comprises properties acquired in partial or total satisfaction of problem loans. The properties are acquired through foreclosure proceedings or acceptance of a deed in lieu of foreclosure. At the time these properties are foreclosed, the properties are initially recorded at the fair value at the date of foreclosure less estimated selling costs. Losses arising at the time of acquisition of such properties are charged against the allowance for loan losses. Subsequent loss provisions are charged to the foreclosed real estate valuation allowance and expenses incurred to maintain the properties are charged to noninterest expense. Properties are evaluated regularly to ensure the recorded amounts are supported by current fair values, and a charge to operations is recorded as necessary to reduce the carrying amount to fair value less estimated costs to dispose. Revenue and expense from the operation of other real estate owned and the provision to establish and adjust valuation allowances are included in noninterest expenses. Costs relating to the development and improvement of the property are capitalized, subject to the limit of fair value of the collateral. In the Consolidated Statements of Financial Condition, total prepaid expenses and other assets include foreclosed real estate of $-0- as of September 30, 2017 and December 31, 2016, with no specific valuation allowance. The recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process according to local requirements of the applicable jurisdiction totaled $4.1 million at September 30, 2017.
Pension and Other Postretirement Benefit Plans	Pension and Other Postretirement Benefit Plans The Company’s non-contributory defined-benefit pension plan and certain defined benefit postretirement plans were frozen as of February 28, 2013 and no additional benefits will accrue. The Company has a non-contributory defined benefit pension plan that provides benefits for substantially all employees hired before January 1, 2007 who meet certain requirements as to age and length of service. The benefits are based on years of service and average compensation, as defined in the Plan Document. The Company’s funding practice is to meet the minimum funding standards established by the Employee Retirement Income Security Act of 1974. In addition to providing pension benefits, we provide certain health care and life insurance benefits for retired employees. Participants or eligible employees hired before January 1, 1993 become eligible for the benefits if they retire after reaching age 62 with fifteen or more years of service. A fixed percent of annual costs are paid depending on length of service at retirement. The Company accrues for the estimated costs of these other post-retirement benefits through charges to expense during the years that employees render service. The Company makes contributions to cover the current benefits paid under this plan. The Company believes the policy for determining pension and other post-retirement benefit expenses is critical because judgments are required with respect to the appropriate discount rate, rate of return on assets and other items. The Company reviews and updates the assumptions annually. If the Company’s estimate of pension and post-retirement expense is too low it may experience higher expenses in the future, reducing its net income. If the Company’s estimate is too high, it may experience lower expenses in the future, increasing its net income.
Income Taxes	Income Taxes Deferred income taxes are provided for differences arising in the timing of income and expenses for financial reporting and for income tax purposes. Deferred income taxes and tax benefits 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 basis. 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 Company provides a deferred tax asset valuation allowance for the estimated future tax effects attributable to temporary differences and carryforwards when realization is determined not to be more likely than not. FASB ASC 740-10 prescribes a recognition threshold that a tax position is required to meet before being recognized in the financial statements and provides guidance on derecognition, measurement, classification, interest and penalties, accounting in interim periods, disclosure and transition issues. Pursuant to FASB ASC 740-10, the Company examines its financial statements, its income tax provision and its federal and state income tax returns and analyzes its tax positions, including permanent and temporary differences, as well as the major components of income and expense to determine whether a tax benefit is more likely than not to be sustained upon examination by tax authorities. The Company recognizes interest and penalties arising from income tax settlements as part of its provision for income taxes.
Reclassifications	Reclassifications Amounts in prior period consolidated financial statements are reclassified whenever necessary to conform to the current year presentation.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In August 2015, the FASB issued Accounting Standards Update “ASU” No. 2015-14 "Revenue from Contracts with Customers (Topic 606)." In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), with an original effective date for annual reporting periods beginning after December 15, 2016. The core principle of the guidance is that an entity should recognize revenue to depict 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 those goods and services. ASU 2015-14 deferred the effective date of ASU 2014-09 to annual periods and interim periods within those annual periods beginning after December 15, 2017. The amendments can be applied retrospectively to each prior reporting period or retrospectively with the cumulative effect of initially applying this Update recognized at the date of initial application. Since the guidance does not apply to revenue associated with financial instruments, including loans and securities that are accounted for under other GAAP, the Company does not expect the new guidance to have a material impact on revenue most closely associated with financial instruments, including interest income and expense. The Company's fees for customer services, brokerage and insurance fee income items are within the scope of the ASU 2014-09. The timing of the Company's revenue recognition regarding these items is not expected to materially change. However, we do expect that the standard will result in new disclosure requirements, which are currently being evaluated. The Company plans to adopt ASU No. 2014-09 on January 1, 2018 utilizing the modified retrospective approach with a cumulative effect adjustment to opening retained earnings, if such adjustment is deemed to be material. In January 2016, the FASB issued ASU 2016-01, "Financial Instruments—Overall (Topic 825-10): "Recognition and Measurement of Financial Assets and Financial Liabilities." ASU 2016-01 amends the guidance on the classification and measurement of financial instruments. Some of the amendments in ASU 2016-01 include the following: 1) requires equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income; 2) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment; 3) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; and 4) requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value; among others. For public business entities, the amendments of ASU 2016-01 are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company is assessing the impact of ASU 2016-01 on its accounting and disclosures. In February 2016, the FASB issued ASU No. 2016-02 "Leases (Topic 842)." ASU 2016-02 supersedes Topic 840, Leases. This ASU is to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. Some of the provisions in ASU 2016-02 include the following: 1) requires lessees to recognize a right-of-use asset and a lease liability for virtually all of their leases (other than leases that meet the definition of a short-term lease), 2) requires lessor accounting to be updated to align with certain changes to the lessee model and the new revenue recognition standard, 3) an arrangement contains an embedded lease if property, plant, or equipment is explicitly or implicitly identified and its use is controlled by the customer, 4) in certain circumstances, the lessee is required to remeasure the lease payments, and 5) requires extensive quantitative and qualitative disclosures, including significant judgments made by management, will be required to provide greater insight into the extent of revenue and expense recognized and expected to be recognized from existing contracts. For public business entities, ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company is assessing the impact of ASU 2016-02 on its accounting and disclosures. In March 2016, the FASB issued ASU No. 2016-07 "Investments – Equity Method and Joint Ventures (Topic 323) Simplifying the Transition to the Equity Method of Accounting." This ASU eliminates the requirement that when an investment qualifies for use of the equity method as a result of an increase in the level of ownership interest or degree of influence, an investor must adjust the investment, results of operations, and retained earnings retroactively on a step-by step basis as if the equity method had been in effect during all previous periods that the investment had been held. The amendments require that the equity method investor add the cost of acquiring the additional interest in the investee to the current basis of the investor’s previously held interest and adopt the equity method of accounting as of the date the investment becomes qualified for equity method accounting. Therefore, upon qualifying for the equity method of accounting, no retroactive adjustment of the investment is required. For public business entities, ASU 2016-07 is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. The amendments should be applied prospectively upon their effective date to increases in the level of ownership interest or degree of influence that result in the adoption of the equity method. Earlier application is permitted. The Company adopted ASU 2016-09 and it had no impact on its accounting and disclosures. In June 2016, the FASB issued ASU No. 2016-13 "Financial Instruments - Credit Losses (Topic 326)" requires an entity to utilize a new impairment model known as the current expected credit loss ("CECL") model to estimate its lifetime "expected credit loss" and record an allowance that, when deducted from the amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The CECL model is expected to result in more timely recognition of credit losses. This ASU also requires new disclosures for financial assets measured at amortized cost, loans and available-for-sale debt securities. ASU 2016-13 is effective for public business entities for annual periods beginning after December 13, 2019, including interim periods within those fiscal years. 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 adopted. Management has established an internal committee to manage the implementation of ASU 2016-13. The committee is led by the Company’s Chief Financial Officer and Chief Risk Officer and includes representatives of the Bank’s loan operations, credit administration, accounting and technology departments. The committee has reviewed, evaluated and selected a third-party software solution and is currently in the process of identifying and gathering the necessary historical data. The committee is currently analyzing the provisions of the ASU and published regulatory guidance. In August 2016, the FASB issued ASU No. 2016-15 “Statement of Cash Flows (Topic 230) - Classification of Certain Cash Receipts and Cash Payments.” ASU 2016-15 provides cash flow statement classification guidance for certain transactions including how the predominance principle should be applied when cash receipts and cash payments have aspects of more than one class of cash flows. The guidance is effective for public business entities for annual years beginning after December 15, 2017, and interim periods within those fiscal years and should be applied retrospectively. Early adoption is permitted, including adoption in an interim period. The Company is assessing the impact of ASU 2016-15 on its accounting and disclosures. In November 2016, the FASB issued ASU No. 2016-18, “Statement of Cash Flows (Topic 230) - Restricted Cash” (“ASU 2016-18”). ASU 2016-18 requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents and amounts generally described as restricted cash. Restricted cash should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The adoption of ASU 2016-18 requires a retrospective transition method applied to each period presented. This ASU is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted. The adoption of ASU 2016-18 is not expected to have a material impact on the Company’s accounting and disclosures. In March 2017, the FASB issued ASU No. 2017-07, “Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost.” ASU 2017-07 requires an employer to report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations, if one is presented. If a separate line item or items are used to present the other components of net benefit cost, that line item or items must be appropriately described. If a separate line item or items are not used, the line item or items used in the income statement to present the other components of net benefit cost must be disclosed. The amendments also allow only the service cost component to be eligible for capitalization when applicable. The guidance is effective for public business entities for annual years beginning after December 15, 2017, including interim periods within those fiscal years. The Company is assessing the impact of ASU 2017-07 on its accounting and disclosures. In May 2017, the FASB issued ASU No. 2017-09 “Compensation - Stock Compensation (Topic 718), Scope of Modification Accounting.” ASU 2017-09 provides guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting under Topic 718. The guidance is effective for public business entities for annual years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption is permitted, including adoption in an interim period. The amendments should be applied on a prospective basis to an award modified on or after the adoption date. The Company is assessing the impact of ASU 2017-09 on its accounting and disclosures.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Schedule of calculation of basic and diluted earnings per common share	Three Months Ended September 30, Nine Months Ended September 30, (Dollars in thousands, except per share data): 2017 2016 2017 2016 Net income $ 5,597 $ 3,773 $ 15,692 $ 11,029 Less: Dividends to participating shares (4 ) - (10 ) (18 ) Income allocated to participating shares (6 ) (15 ) (15 ) (58 ) Net income allocated to common stockholders $ 5,587 $ 3,758 $ 15,667 $ 10,953 Weighted-average shares issued 17,975,443 17,968,628 17,970,204 17,974,118 Less: Average unallocated ESOP shares (802,697 ) (897,948 ) (826,300 ) (921,630 ) Average treasury stock (2,001,571 ) (2,156,167 ) (2,014,869 ) (2,167,900 ) Average unvested restricted stock (27,796 ) (90,599 ) (22,557 ) (114,306 ) Weighted-average basic shares outstanding 15,143,379 14,823,914 15,106,478 14,770,282 Plus: Average dilutive shares 677,280 368,092 661,699 322,827 Weighted-average diluted shares outstanding 15,820,659 15,192,006 15,768,177 15,093,109 Net earnings per share (1) Basic $ 0.37 $ 0.25 $ 1.04 $ 0.74 Diluted $ 0.35 $ 0.25 $ 0.99 $ 0.73 (1) Certain per share amounts may not appear to reconcile due to rounding.

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Schedule of investment securities	September 30, 2017 Recognized in OCI Not Recognized in OCI Gross Gross Gross Gross Amortized Unrealized Unrealized Carrying Unrealized Unrealized Fair (Dollars in thousands) Cost Gains Losses Value Gains Losses Value Available-for-sale Debt securities: U.S. Treasury obligations $ 22,843 $ 168 $ - $ 23,011 $ - $ - $ 23,011 U.S. Government agency obligations 54,000 30 (197 ) 53,833 - - 53,833 Government sponsored residential mortgage-backed securities 2,869 140 - 3,009 - - 3,009 Corporate debt securities 500 2 - 502 - - 502 Preferred equity securities 2,000 - (150 ) 1,850 - - 1,850 Marketable equity securities 108 80 - 188 - - 188 Mutual funds 5,155 - (249 ) 4,906 - - 4,906 Total securities available-for-sale $ 87,475 $ 420 $ (596 ) $ 87,299 $ - $ - $ 87,299 Held-to-maturity U.S. Treasury obligations $ 4,990 $ - $ - $ 4,990 $ 58 $ - $ 5,048 U.S. Government agency obligations 31,000 - - 31,000 - (154 ) 30,846 Government sponsored residential mortgage-backed securities 20,858 - - 20,858 203 - 21,061 Total securities held-to-maturity $ 56,848 $ - $ - $ 56,848 $ 261 $ (154 ) $ 56,955 December 31, 2016 Recognized in OCI Not Recognized in OCI Gross Gross Gross Gross Amortized Unrealized Unrealized Carrying Unrealized Unrealized Fair (Dollars in thousands) Cost Gains Losses Value Gains Losses Value Available-for-sale Debt securities: U.S. Treasury obligations $ 19,826 $ 142 $ - $ 19,968 $ - $ - $ 19,968 U.S. Government agency obligations 73,996 67 (352 ) 73,711 - - 73,711 Government sponsored residential mortgage-backed securities 3,424 145 - 3,569 - - 3,569 Corporate debt securities 500 15 - 515 - - 515 Preferred equity securities 2,000 - (254 ) 1,746 - - 1,746 Marketable equity securities 108 75 (1 ) 182 - - 182 Mutual funds 4,071 - (242 ) 3,829 - - 3,829 Total securities available-for-sale $ 103,925 $ 444 $ (849 ) $ 103,520 $ - $ - $ 103,520 Held-to-maturity U.S. Government agency obligations $ 16,000 $ - $ - $ 16,000 $ - $ (83 ) $ 15,917 Government sponsored residential mortgage-backed securities 17,061 - - 17,061 63 - 17,124 Total securities held-to-maturity $ 33,061 $ - $ - $ 33,061 $ 63 $ (83 ) $ 33,041
Schedule of gross unrealized losses and fair value aggregated by investment category	September 30, 2017 Less than 12 Months 12 Months or More Total Gross Gross Gross Number of Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Securities Value Loss Value Loss Value Loss Available-for-sale: U.S. Government agency obligations 7 $ 15,926 $ (74 ) $ 30,877 $ (123 ) $ 46,803 $ (197 ) Preferred equity securities 1 - - 1,850 (150 ) 1,850 (150 ) Mutual funds 1 - - 4,905 (249 ) 4,905 (249 ) 9 $ 15,926 $ (74 ) $ 37,632 $ (522 ) $ 53,558 $ (596 ) Held-to-maturity U.S. Government agency obligations 5 $ 30,846 $ (154 ) $ - $ - $ 30,846 $ (154 ) Total investment securities in an unrealized loss position 14 $ 46,772 $ (228 ) $ 37,632 $ (522 ) $ 84,404 $ (750 ) December 31, 2016 Less than 12 Months 12 Months or More Total Gross Gross Gross Number of Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Securities Value Loss Value Loss Value Loss Available-for-sale: U.S. Government agency obligations 10 $ 66,644 $ (352 ) $ - $ - $ 66,644 $ (352 ) Preferred equity securities 1 - - 1,746 (254 ) 1,746 (254 ) Marketable equity securities 1 - - 6 (1 ) 6 (1 ) Mutual funds 1 - - 3,830 (242 ) 3,830 (242 ) 13 $ 66,644 $ (352 ) $ 5,582 $ (497 ) $ 72,226 $ (849 ) Held-to-maturity U.S. Government agency obligations 2 $ 11,917 $ (83 ) $ - $ - $ 11,917 $ (83 ) Total investment securities in an unrealized loss position 15 $ 78,561 $ (435 ) $ 5,582 $ (497 ) $ 84,143 $ (932 )
Schedule of amortized cost and estimated market value of debt securities by contractual maturity	September 30, 2017 Available-for-Sale Held-to-Maturity Estimated Estimated Amortized Fair Amortized Fair (Dollars in thousands) Cost Value Cost Value Due in one year or less $ 39,496 $ 39,443 $ - $ - Due after one year through five years 37,847 37,903 30,990 30,919 Due after five years through ten years - - 5,000 4,975 Due after ten years - - - - Government sponsored residential mortgage-backed securities 2,869 3,009 20,858 21,061 $ 80,212 $ 80,355 $ 56,848 $ 56,955 December 31, 2016 Available-for-Sale Held-to-Maturity Estimated Estimated Amortized Fair Amortized Fair (Dollars in thousands) Cost Value Cost Value Due in one year or less $ 33,475 $ 33,490 $ - $ - Due after one year through five years 60,847 60,704 16,000 15,917 Due after five years through ten years - - - - Due after ten years - - - - Government sponsored residential mortgage-backed securities 3,424 3,569 17,061 17,124 $ 97,746 $ 97,763 $ 33,061 $ 33,041

Loans and Allowance for Loan 30

Loans and Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Schedule of loans	September 30, December 31, (Dollars in thousands) 2017 2016 Real estate: Residential $ 969,679 $ 907,946 Commercial 1,028,930 979,370 Construction 86,713 49,679 Commercial 436,172 430,539 Home equity line of credit 166,791 170,786 Other 5,733 5,348 Total loans 2,694,018 2,543,668 Net deferred loan costs 4,595 3,844 Loans 2,698,613 2,547,512 Allowance for loan losses (22,202 ) (21,529 ) Loans, net $ 2,676,411 $ 2,525,983
Schedule of changes in the allowance for loan losses by segments	For the Three Months Ended September 30, 2017 (Dollars in thousands) Balance at Charge-offs Recoveries Provision for Balance at Real estate: Residential $ 4,254 $ (46 ) $ 14 $ (202 ) $ 4,020 Commercial 11,633 - - 79 11,712 Construction 651 - - 109 760 Commercial 4,077 (24 ) 45 175 4,273 Home equity line of credit 1,379 - - 13 1,392 Other 43 (48 ) 7 43 45 $ 22,037 $ (118 ) $ 66 $ 217 $ 22,202 For the Three Months Ended September 30, 2016 (Dollars in thousands) Balance at Charge-offs Recoveries Provision for Balance at Real estate Residential $ 3,744 $ (57 ) $ - $ 157 $ 3,844 Commercial 10,489 - - 151 10,640 Construction 327 - - 102 429 Commercial 4,630 (28 ) - 177 4,779 Home equity line of credit 1,491 (13 ) - 55 1,533 Other 39 (64 ) 7 56 38 $ 20,720 $ (162 ) $ 7 $ 698 $ 21,263 For the Nine Months Ended September 30, 2017 (Dollars in thousands) Balance at Charge-offs Recoveries Provision for Balance at Real estate: Residential $ 4,134 $ (79 ) $ 15 $ (50 ) $ 4,020 Commercial 11,131 (111 ) 2 690 11,712 Construction 425 - - 335 760 Commercial 4,400 (346 ) 45 174 4,273 Home equity line of credit 1,398 - - (6 ) 1,392 Other 41 (128 ) 23 109 45 $ 21,529 $ (664 ) $ 85 $ 1,252 $ 22,202 For the Nine Months Ended September 30, 2016 (Dollars in thousands) Balance at Charge-offs Recoveries Provision for Balance at Real estate: Residential $ 4,084 $ (81 ) $ 1 $ (160 ) $ 3,844 Commercial 10,255 - - 385 10,640 Construction 231 - - 198 429 Commercial 4,119 (370 ) 10 1,020 4,779 Home equity line of credit 1,470 (13 ) - 76 1,533 Other 39 (222 ) 24 197 38 $ 20,198 $ (686 ) $ 35 $ 1,716 $ 21,263
Schedule of the allowance by impairment methodology and by loan segment	September 30, 2017 December 31, 2016 (Dollars in thousands) Total Reserve Total Reserve Loans individually evaluated for impairment: Real estate: Residential $ 12,715 $ 122 $ 12,778 $ 145 Commercial 8,587 - 12,363 14 Construction 4,532 - 4,532 - Commercial 1,569 59 2,029 112 Home equity line of credit 1,983 - 1,864 - Other 538 6 707 7 29,924 187 34,273 278 Loans collectively evaluated for impairment: Real estate: Residential $ 962,805 $ 3,898 $ 900,352 $ 3,989 Commercial 1,019,141 11,712 965,718 11,117 Construction 82,181 760 45,147 425 Commercial 434,559 4,214 428,466 4,288 Home equity line of credit 164,808 1,392 168,922 1,398 Other 5,195 39 4,634 34 2,668,689 22,015 2,513,239 21,251 Total $ 2,698,613 $ 22,202 $ 2,547,512 $ 21,529
Schedule of nonperforming assets	September 30, December 31, (Dollars in thousands) 2017 2016 Nonaccrual loans: Real estate: Residential $ 9,022 $ 9,846 Commercial 73 976 Construction 4,532 4,532 Commercial 868 1,301 Home equity line of credit 754 862 Other 56 44 Total nonaccruing loans 15,305 17,561 Loans 90 days past due and still accruing - - Other real estate owned - - Total nonperforming assets $ 15,305 $ 17,561
Schedule of loan delinquencies at recorded investment values	September 30, 2017 30-59 Days 60-89 Days > 90 Days Past Due 90 Past Due Past Due Past Due Total and Still (Dollars in thousands) Number Amount Number Amount Number Amount Number Amount Accruing Real estate: Residential 15 $ 2,948 13 $ 2,091 19 $ 7,254 47 $ 12,293 $ - Commercial - - - - - - - - - Construction - - - - 1 4,532 1 4,532 - Commercial - - - - 1 25 1 25 - Home equity line of credit 2 372 - - 3 362 5 734 - Other 9 192 2 15 2 17 13 224 - Total 26 $ 3,512 15 $ 2,106 26 $ 12,190 67 $ 17,808 $ - December 31, 2016 30-59 Days 60-89 Days > 90 Days Past Due 90 Past Due Past Due Past Due Total and Still (Dollars in thousands) Number Amount Number Amount Number Amount Number Amount Accruing Real estate: Residential 10 $ 1,226 6 $ 1,529 23 $ 7,979 39 $ 10,734 $ - Commercial 1 193 - - 1 888 2 1,081 - Construction - - - - 1 4,532 1 4,532 - Commercial 1 54 - - 3 319 4 373 - Home equity line of credit - - 2 85 3 377 5 462 - Other 7 66 1 23 - - 8 89 - Total 19 $ 1,539 9 $ 1,637 31 $ 14,095 59 $ 17,271 $ -
Schedule of summary of information pertaining to impaired loans	September 30, 2017 December 31, 2016 Unpaid Unpaid Recorded Principal Related Recorded Principal Related (Dollars in thousands) Investment Balance Allowance Investment Balance Allowance Impaired loans without a valuation allowance: Real estate: Residential $ 11,748 $ 13,645 $ - $ 11,046 $ 12,833 $ - Commercial 8,587 8,621 - 9,496 9,636 - Construction 4,532 4,532 - 4,532 4,532 - Commercial 1,501 1,791 - 1,784 2,027 - Home equity line of credit 1,983 2,037 - 1,864 1,909 - Other 514 533 - 682 700 - Total 28,865 31,159 - 29,404 31,637 - Impaired loans with a valuation allowance: Real estate: Residential 967 985 122 1,732 1,796 145 Commercial - - - 2,867 2,867 14 Construction - - - - - - Commercial 68 859 59 245 894 112 Home equity line of credit - - - - - - Other 24 24 6 25 25 7 Total 1,059 1,868 187 4,869 5,582 278 Total impaired loans $ 29,924 $ 33,027 $ 187 $ 34,273 $ 37,219 $ 278
Schedule of average recorded investment and interest income recognized on impaired loans	Three Months Nine Months Three Months Nine Months Ended Ended Ended Ended September 30, September 30, September 30, September 30, September 30, September 30, 2017 2017 2017 2016 2016 2016 Average Interest Interest Average Interest Interest Recorded Income Income Recorded Income Income (Dollars in thousands) Investment Recognized Recognized Investment Recognized Recognized Impaired loans without a valuation allowance: Real estate: Residential $ 11,599 $ 33 $ 91 $ 11,394 $ 22 $ 71 Commercial 8,772 101 293 12,850 125 396 Construction 4,532 - - 4,719 - 69 Commercial 1,458 7 16 2,552 8 27 Home equity line of credit 1,956 13 32 1,417 9 18 Other 597 6 21 859 8 26 Total 28,914 160 453 33,791 172 607 Impaired loans with a valuation allowance: Real estate: Residential 1,182 13 27 876 8 33 Commercial 1,430 - 51 2,900 35 105 Construction - - - - - - Commercial 102 - - 1,256 1 3 Home equity line of credit - - - - - - Other 25 - - 33 - 1 Total 2,739 13 78 5,065 44 142 Total impaired loans $ 31,653 $ 173 $ 531 $ 38,856 $ 216 $ 749
Schedule of loans terms modified in a troubled debt restructuring	September 30, 2017 TDRs on Accrual Status TDRs on Nonaccrual Status Total TDRs (Dollars in thousands) Number of Recorded Number of Recorded Number of Recorded Real estate: Residential 19 $ 3,207 11 $ 4,212 30 $ 7,419 Commercial 2 626 - - 2 626 Construction - - 1 4,532 1 4,532 Commercial 2 305 4 791 6 1,096 Home equity line of credit 14 1,345 1 314 15 1,659 Other 5 523 1 15 6 538 Total 42 $ 6,006 18 $ 9,864 60 $ 15,870 December 31, 2016 TDRs on Accrual Status TDRs on Nonaccrual Status Total TDRs (Dollars in thousands) Number of Recorded Number of Recorded Number of Recorded Real estate: Residential 15 $ 2,581 9 $ 4,433 24 $ 7,014 Commercial 2 3,333 - - 2 3,333 Construction - - 1 4,532 1 4,532 Commercial 3 485 6 1,047 9 1,532 Home equity line of credit 8 1,075 1 58 9 1,133 Other 5 686 1 20 6 706 Total 33 $ 8,160 18 $ 10,090 51 $ 18,250
Schedule of recorded investment in the loans prior to a modification and also the recorded investment in the loans after the loans were restructured	For the Three Months Ended September 30, 2017 For the Nine Months Ended September 30, 2017 (Dollars in thousands) Number of Recorded Recorded Investment After Modification (1) Number of Recorded Recorded Investment After Modification (1) Troubled Debt Restructurings: Real estate: Residential 1 $ 140 $ 140 7 $ 1,093 $ 1,089 Commercial 1 171 171 1 171 171 Home equity line of credit 3 349 349 6 533 532 Total 5 $ 660 $ 660 $ 14 $ 1,797 $ 1,792 For the Three Months Ended September 30, 2016 For the Nine Months Ended September 30, 2016 (Dollars in thousands) Number of Recorded Recorded Investment After Modification (1) Number of Recorded Recorded Investment After Modification (1) Troubled Debt Restructurings: Real estate Residential 1 $ 231 $ 231 1 $ 231 $ 231 Commercial 1 117 117 1 117 117 Home equity line of credit - - - 6 985 982 Total 2 $ 348 $ 348 $ 8 $ 1,333 $ 1,330 (1) The period end balances are inclusive of all partial paydowns and charge-offs since the modification date. TDRs fully paid off, charged-off or foreclosed upon by period end are not included.
Schedule of TDR loans modified by means of extended maturity, below market adjusted interest rates, a combination of rate and maturity, or by other means including covenant modifications, forbearance concessions	For the Three Months Ended September 30, 2017 (Dollars in thousands) Number of Extended Maturity (1) Adjusted Interest Rates (1) Combination of Rate and Maturity (1) Other (1) Total Real estate: Residential 1 $ - $ - $ - $ 140 $ 140 Commercial 1 - - - 171 171 Home equity line of credit 3 - - - 349 349 Total 5 $ - $ - $ - $ 660 $ 660 For the Nine Months Ended September 30, 2017 (Dollars in thousands) Number of Extended Maturity (1) Adjusted Interest Rates (1) Combination of Rate and Maturity (1) Other (1) Total Real estate: Residential 7 $ 90 $ - $ 336 $ 663 $ 1,089 Commercial 1 - - - 171 171 Home equity line of credit 6 88 - - 444 532 Total 14 $ 178 $ - $ 336 $ 1,278 $ 1,792 For the Three Months Ended September 30, 2016 (Dollars in thousands) Number of Extended Maturity (1) Adjusted Interest Rates (1) Combination of Rate and Maturity (1) Other (1) Total Real estate Residential 1 $ - $ - $ - $ 231 $ 231 Commercial 1 117 - - - 117 Total 2 $ 117 $ - $ - $ 231 $ 348 For the Nine Months Ended September 30, 2016 (Dollars in thousands) Number of Extended Maturity (1) Adjusted Interest Rates (1) Combination of Rate and Maturity (1) Other (1) Total Real estate Residential 1 $ - $ - $ - $ 231 $ 231 Commercial 1 117 - - - 117 Home equity line of credit 6 - - - 982 982 Total 8 $ 117 $ - $ - $ 1,213 $ 1,330 (1) The period end balances are inclusive of all partial paydowns and charge-offs since the modification date. TDRs fully paid off, charged-off or foreclosed upon by period end are not included.
Schedule of loans by risk rating	September 30, 2017 (Dollars in thousands) Pass Special Mention Substandard Doubtful Total Real estate: Residential $ 958,934 $ 1,049 $ 9,696 $ - $ 969,679 Commercial 1,015,826 5,009 8,095 - 1,028,930 Construction 82,181 - 4,532 - 86,713 Commercial 398,228 24,805 13,139 - 436,172 Home equity line of credit 165,963 74 754 - 166,791 Other 5,657 21 55 - 5,733 Total Loans $ 2,626,789 $ 30,958 $ 36,271 $ - $ 2,694,018 December 31, 2016 (Dollars in thousands) Pass Special Mention Substandard Doubtful Total Real estate: Residential $ 896,861 $ 852 $ 10,233 $ - $ 907,946 Commercial 968,109 1,991 9,270 - 979,370 Construction 45,147 - 4,532 - 49,679 Commercial 413,900 3,914 12,725 - 430,539 Home equity line of credit 169,834 83 869 - 170,786 Other 5,257 24 67 - 5,348 Total Loans $ 2,499,108 $ 6,864 $ 37,696 $ - $ 2,543,668

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Sep. 30, 2017
Banking and Thrift [Abstract]
Schedule of deposit	September 30, December 31, (Dollars in thousands) 2017 2016 Noninterest-bearing demand deposits $ 437,372 $ 441,283 Interest-bearing NOW accounts 652,631 542,764 Money market 549,674 532,681 Savings accounts 233,330 233,792 Time deposits 509,544 464,570 Total interest-bearing deposits 1,945,179 1,773,807 Total deposits $ 2,382,551 $ 2,215,090

Pension and Other Postretirem32

Pension and Other Postretirement Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2017
Compensation and Retirement Disclosure [Abstract]
Schedule of components of net periodic pension and benefit costs	Pension Benefits Other Postretirement Benefits Three Months Ended September 30, Three Months Ended September 30, (Dollars in thousands) 2017 2016 2017 2016 Service cost $ - $ - $ 14 $ 14 Interest cost 251 264 25 30 Expected return on plan assets (295 ) (279 ) - - Amortization: Loss 176 176 - - Prior service cost - - (13 ) (13 ) Recognized net gain - - (2 ) - Net periodic benefit cost $ 132 $ 161 $ 24 $ 31 Pension Benefits Other Postretirement Benefits Nine Months Ended September 30, Nine Months Ended September 30, (Dollars in thousands) 2017 2016 2017 2016 Service cost $ - $ - $ 43 $ 42 Interest cost 751 789 76 90 Expected return on plan assets (886 ) (835 ) - - Amortization: - Loss 530 528 - - Prior service cost - - (38 ) (38 ) Recognized net gain - - (6 ) - Net periodic benefit cost $ 395 $ 482 $ 75 $ 94
Schedule of shares held by the ESOP	Allocated 572,166 Committed to be released 71,325 Unallocated 786,925 1,430,416

Stock Incentive Plans (Tables)

Stock Incentive Plans (Tables)	9 Months Ended
	Sep. 30, 2017
Compensation and Retirement Disclosure [Abstract]
Schedule of weighted-average assumptions	2017 2016 Weighted per share average fair value of options granted $ 5.07 $ 3.00 Weighted-average assumptions: Risk-free interest rate 1.99 % 1.53 % Expected volatility 22.26 % 22.88 % Expected dividend yield 2.16 % 2.13 % Weighted-average dividend yield 2.07% - 2.39 % 1.91 - 2.25 % Expected life of options granted 6.0 years 6.0 years
Schedule of company's stock option activity and related information for its option grants	Number of Weighted-Average Weighted-Average Aggregate Outstanding at December 31, 2016 1,460,376 $ 13.14 Granted 26,900 26.08 Exercised (49,550 ) 13.52 Forfeited (300 ) 16.39 Expired - - Outstanding at September 30, 2017 1,437,426 $ 13.36 5.16 $ 19,235 Exercisable at September 30, 2017 1,383,626 $ 13.06 5.02 $ 18,937
Schedule of company's restricted stock	Restricted Stock Awards Time-Based Restricted Stock Units Performance-Based Restricted Stock Units Number of Weighted-Average Number of Weighted-Average Number of Weighted-Average Unvested at December 31, 2016 - $ - - $ - - $ - Granted 5,698 24.61 14,012 24.48 14,686 21.60 Vested (5,698 ) 24.61 - - - - Forfeited - - - - - - Unvested at September 30, 2017 $ - $ - $ 14,012 $ 24.27 $ 14,686 $ 21.60

Derivative Financial Instrume34

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of interest rate swaps that were not designated for hedge accounting	September 30, 2017 December 31, 2016 (Dollars in thousands) Consolidated # of Notional Estimated # of Notional Estimated Commercial loan customer interest rate swap position Other Assets 61 $ 310,307 $ 7,709 51 $ 242,351 $ 7,095 Commercial loan customer interest rate swap position Other Liabilities 28 (127,605 ) (3,774 ) 33 148,097 (4,502 ) Counterparty interest rate swap position Other Liabilities 89 (437,912 ) (4,031 ) 84 390,448 (2,687 )
Schedule of changes in the fair value of non-hedge accounting derivatives	For The Three Months Ended September 30, 2017 2016 (Dollars in thousands) Interest Income MTM Gain Net Impact Interest Income MTM Gain Net Impact Commercial loan customer interest rate swap position $ (972 ) $ (154 ) $ (1,126 ) $ (1,468 ) $ (1,594 ) $ (3,062 ) Counterparty interest rate swap position 972 154 1,126 1,468 1,594 3,062 Total $ - $ - $ - $ - $ - $ - For The Nine Months Ended September 30, 2017 2016 (Dollars in thousands) Interest Income MTM Gain Net Impact Interest Income MTM Gain Net Impact Commercial loan customer interest rate swap position $ (3,342 ) $ 614 $ (2,728 ) $ (4,281 ) $ 13,388 $ 9,107 Counterparty interest rate swap position 3,342 (614 ) 2,728 4,281 (13,388 ) (9,107 ) Total $ - $ - $ - $ - $ - $ -

Offsetting of Financial Asset35

Offsetting of Financial Assets and Liabilities (Tables)	9 Months Ended
	Sep. 30, 2017
Offsetting Of Financial Assets And Liabilities [Abstract]
Schedule of remaining contractual maturities of repurchase agreement borrowings and repurchase liabilities	September 30, 2017 December 31, 2016 Remaining Contractual Maturity of the Agreements Remaining Contractual Maturity of the Agreements (Dollars in thousands) Overnight Up to One One Year to Total Overnight Up to One One Year to Total Repurchase agreement borrowings U.S. Government agency obligations $ - $ 6,000 $ - $ 6,000 $ - $ - $ 6,000 $ 6,000 Government sponsored residential mortgage-backed securities - 4,500 - 4,500 - - 4,500 4,500 Total repurchase agreement borrowings - 10,500 - 10,500 - - 10,500 10,500 Repurchase liabilities U.S. Government agency obligations 21,538 - - 21,538 18,867 - - 18,867 Total repurchase liabilities 21,538 - - 21,538 18,867 - - 18,867 Total $ 21,538 $ 10,500 $ - $ 32,038 $ 18,867 $ - $ 10,500 $ 29,367
Schedule of potential effect of rights of setoff associated with recognized financial assets and liabilities	September 30, 2017 Gross Amounts Not Offset in the Statement of (Dollars in thousands) Gross Amount Gross Amounts Net Amounts of Financial Securities Cash Net Interest rate swap derivatives $ 7,709 $ - $ 7,709 $ - $ - $ 7,250 $ 459 Total $ 7,709 $ - $ 7,709 $ - $ - $ 7,250 $ 459 September 30, 2017 Gross Amounts Not Offset in the Statement of (Dollars in thousands) Gross Amount Gross Amounts Net Amounts of Financial Securities Cash Net Interest rate swap derivatives $ 7,805 $ - $ 7,805 $ - $ - $ 7,250 $ 555 Repurchase agreement borrowings 10,500 - 10,500 - 10,245 255 - Total $ 18,305 $ - $ 18,305 $ - $ 10,245 $ 7,505 $ 555 December 31, 2016 Gross Amounts Not Offset in the Statement of (Dollars in thousands) Gross Amount Gross Amounts Net Amounts of Financial Securities Cash Net Interest rate swap derivatives $ 7,095 $ - $ 7,095 $ - $ - $ 2,000 $ 5,095 Total $ 7,095 $ - $ 7,095 $ - $ - $ 2,000 $ 5,095 December 31, 2016 Gross Amounts Not Offset in the Statement of (Dollars in thousands) Gross Amount Gross Amounts Net Amounts of Financial Securities Cash Net Interest rate swap derivatives $ 7,189 $ - $ 7,189 $ - $ - $ 2,000 $ 5,189 Repurchase agreement borrowings 10,500 - 10,500 - 10,500 - - Total $ 17,689 $ - $ 17,689 $ - $ 10,500 $ 2,000 $ 5,189

Financial Instruments with Of36

Financial Instruments with Off-Balance Sheet Risk (Tables)	9 Months Ended
	Sep. 30, 2017
Financial Instruments With Off Balance Sheet Risk Disclosure [Abstract]
Schedule of financial instruments whose contract amounts represent credit risk	September 30, December 31, (Dollars in thousands) 2017 2016 Approved loan commitments $ 71,127 $ 102,436 Unadvanced portion of construction loans 42,687 57,124 Unused lines for home equity loans 208,005 199,191 Unused revolving lines of credit 332 355 Unused commercial letters of credit 4,621 3,820 Unused commercial lines of credit 236,999 246,622 $ 563,771 $ 609,548

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of financial instruments carried at fair value on a recurring basis	September 30, 2017 Quoted Prices in Significant Significant (Dollars in thousands) Total (Level 1) (Level 2) (Level 3) Assets U.S. Treasury obligations $ 23,011 $ 10,997 $ 12,014 $ - U.S. Government agency obligations 53,833 - 53,833 - Government sponsored residential mortgage-backed securities 3,009 - 3,009 - Corporate debt securities 502 - 502 - Preferred equity securities 1,850 1,850 - - Marketable equity securities 188 188 - - Mutual funds 4,906 - 4,906 - Securities available-for-sale 87,299 13,035 74,264 - Interest rate swap derivative 7,709 - 7,709 - Derivative loan commitments 129 - - 129 Total $ 95,137 $ 13,035 $ 81,973 $ 129 Liabilities Interest rate swap derivative $ 7,805 $ - $ 7,805 $ - Forward loan sales commitments 76 - - 76 Total $ 7,881 $ - $ 7,805 $ 76 December 31, 2016 Quoted Prices in Significant Significant (Dollars in thousands) Total (Level 1) (Level 2) (Level 3) Assets U.S. Treasury obligations $ 19,968 $ - $ 19,968 $ - U.S. Government agency obligations 73,711 - 73,711 - Government sponsored residential mortgage-backed securities 3,569 - 3,569 - Corporate debt securities 515 - 515 - Preferred equity securities 1,746 1,746 - - Marketable equity securities 182 182 - - Mutual funds 3,829 - 3,829 - Securities available-for-sale 103,520 1,928 101,592 - Interest rate swap derivative 7,095 - 7,095 - Derivative loan commitments 95 - - 95 Forward loan sales commitments 88 - - 88 Total $ 110,798 $ 1,928 $ 108,687 $ 183 Liabilities Interest rate swap derivative $ 7,189 $ - $ 7,189 $ - Total $ 7,189 $ - $ 7,189 $ -
Schedule of assets measured at fair value according to Level 3 inputs	Derivative and Forward Loan Sales Commitments, Net For the Three Months Ended September 30, For the Nine Months Ended September 30, (Dollars in thousands) 2017 2016 2017 2016 Balance, at beginning of period $ 131 $ 177 $ 183 $ 137 Total realized (loss) gain: Included in earnings (78 ) 106 (130 ) 146 Balance, at the end of period $ 53 $ 283 $ 53 $ 283
Schedule of valuation methodology and unobservable inputs for Level 3 assets measured at fair value on a recurring basis	September 30, 2017 Significant (Dollars in thousands) Fair Value Valuation Methodology Unobservable Inputs Input Derivative and forward loan sales commitments, net $ 53 Adjusted quoted prices in active markets Embedded servicing value 1.26 % December 31, 2016 Significant (Dollars in thousands) Fair Value Valuation Methodology Unobservable Inputs Input Derivative and forward loan sales commitments, net $ 183 Adjusted quoted prices in active markets Embedded servicing value 1.33 %
Schedule of financial instruments carried at fair value on a nonrecurring basis	September 30, 2017 December 31, 2016 Quoted Prices in Significant Significant Quoted Prices in Significant Significant Active Markets for Observable Unobservable Active Markets for Observable Unobservable Identical Assets Inputs Inputs Identical Assets Inputs Inputs (Dollars in thousands) (Level 1) (Level 2) (Level 3) (Level 1) (Level 2) (Level 3) Impaired loans $ - $ - $ 2,074 $ - $ - $ 3,727
Schedule of valuation methodology and unobservable inputs for Level 3 assets measured at fair value on a non-recurring basis	September 30, 2017 (Dollars in thousands) Fair Value Valuation Methodology Significant Range of Inputs Weighted Impaired loans $ 2,074 Appraisals Discount for dated appraisal 5% - 20% 12.50 % Discount for costs to sell 8% - 15% 11.50 % December 31, 2016 (Dollars in thousands) Fair Value Valuation Methodology Significant Range of Inputs Weighted Impaired loans $ 3,727 Appraisals Discount for dated appraisal 5% - 20% 12.50 % Discount for costs to sell 8% - 15% 11.50 %
Schedule of carrying amount, fair value, and placement in the fair value hierarchy of the Company's financial instruments	September 30, 2017 December 31, 2016 Estimated Estimated Fair Value Carrying Fair Carrying Fair (Dollars in thousands) Hierarchy Level Amount Value Amount Value Financial assets Securities held-to-maturity Level 2 $ 56,848 $ 56,955 $ 33,061 $ 33,041 Securities available-for-sale See previous table 87,299 87,299 103,520 103,520 Loans Level 3 2,698,613 2,660,753 2,547,512 2,515,906 Loans held-for-sale Level 2 6,902 7,000 3,270 3,289 Mortgage servicing rights Level 3 5,269 6,886 4,817 6,166 Federal Home Loan Bank of Boston stock Level 2 15,954 15,954 16,378 16,378 Alternative investments Level 3 2,112 2,302 2,228 2,045 Interest rate swap derivatives Level 2 7,709 7,709 7,095 7,095 Derivative loan commitments Level 3 129 129 95 95 Forward loan sales commitments Level 3 - - 88 88 Financial liabilities Deposits other than time deposits Level 1 1,873,007 1,873,007 1,773,807 1,773,807 Time deposits Level 2 509,544 513,662 464,570 468,472 Federal Home Loan Bank of Boston advances Level 2 271,458 270,414 287,057 286,629 Repurchase agreement borrowings Level 2 10,500 10,438 10,500 10,428 Repurchase liabilities Level 2 21,538 21,528 18,867 18,862 Interest rate swap derivatives Level 2 7,805 7,805 7,189 7,189 Forward loan sales commitments Level 3 76 76 - -

Regulatory Matters (Tables)

Regulatory Matters (Tables)	9 Months Ended
	Sep. 30, 2017
Regulatory Matters Disclosure [Abstract]
Schedule of actual capital amounts and ratios for the Company and the Bank	Minimum Required To Be Well Actual Purposes Action (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Farmington Bank: At September 30, 2017 Total Capital (to Risk Weighted Assets) $ 271,162 11.24 % $ 192,976 8.00 % $ 241,219 10.00 % Tier I Capital (to Risk Weighted Assets) 248,927 10.32 144,731 6.00 192,974 8.00 Common Equity Tier I Capital (to Risk Weighted Assets) 248,927 10.32 108,548 4.50 156,791 6.50 Tier I Leverage Capital (to Average Assets) 248,927 8.25 120,717 4.00 150,896 5.00 At December 31, 2016 Total Capital (to Risk Weighted Assets) $ 253,921 11.28 % $ 180,043 8.00 % $ 225,053 10.00 % Tier I Capital (to Risk Weighted Assets) 232,239 10.32 135,033 6.00 180,044 8.00 Common Equity Tier I Capital (to Risk Weighted Assets) 232,239 10.32 101,275 4.50 146,286 6.50 Tier I Leverage Capital (to Average Assets) 232,239 8.18 113,598 4.00 141,997 5.00 First Connecticut Bancorp, Inc.: At September 30, 2017 Total Capital (to Risk Weighted Assets) $ 301,448 12.50 % $ 192,995 8.00 % $ 241,243 10.00 % Tier I Capital (to Risk Weighted Assets) 279,213 11.57 144,745 6.00 192,993 8.00 Common Equity Tier I Capital (to Risk Weighted Assets) 279,213 11.57 108,559 4.50 156,807 6.50 Tier I Leverage Capital (to Average Assets) 279,213 9.23 120,980 4.00 151,225 5.00 At December 31, 2016 Total Capital (to Risk Weighted Assets) $ 288,273 12.80 % $ 180,113 8.00 % $ 225,141 10.00 % Tier I Capital (to Risk Weighted Assets) 266,591 11.84 135,084 6.00 180,112 8.00 Common Equity Tier I Capital (to Risk Weighted Assets) 266,591 11.84 101,313 4.50 146,341 6.50 Tier I Leverage Capital (to Average Assets) 266,591 9.39 113,624 4.00 142,030 5.00

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2017
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Schedule of changes in accumulated other comprehensive loss by component	For the Three Months Ended September 30, 2017 (Dollars in thousands) Investment Employee Benefit Accumulated Balance at June 30, 2017 $ (148 ) $ (6,217 ) $ (6,365 ) Other comprehensive income during the period 32 - 32 Amount reclassified from accumulated other comprehensive income, net of tax - 105 105 Net change 32 105 137 Balance at September 30, 2017 $ (116 ) $ (6,112 ) $ (6,228 ) For the Three Months Ended September 30, 2016 (Dollars in thousands) Investment Employee Benefit Accumulated Balance at June 30, 2016 $ 247 $ (6,702 ) $ (6,455 ) Other comprehensive income during the period 5 - 5 Amount reclassified from accumulated other comprehensive income, net of tax - 106 106 Net change 5 106 111 Balance at September 30, 2016 $ 252 $ (6,596 ) $ (6,344 ) For the Nine Months Ended September 30, 2017 (Dollars in thousands) Investment Employee Benefit Accumulated Balance at December 31, 2016 $ (263 ) $ (6,427 ) $ (6,690 ) Other comprehensive income during the period 147 - 147 Amount reclassified from accumulated other comprehensive income, net of tax - 315 315 Net change 147 315 462 Balance at September 30, 2017 $ (116 ) $ (6,112 ) $ (6,228 ) For the Nine Months Ended September 30, 2016 (Dollars in thousands) Investment Employee Benefit Accumulated Balance at December 31, 2015 $ (249 ) $ (6,913 ) $ (7,162 ) Other comprehensive loss during the period 501 - 501 Amount reclassified from accumulated other comprehensive income, net of tax - 317 317 Net change 501 317 818 Balance at September 30, 2016 $ 252 $ (6,596 ) $ (6,344 )
Schedule of reconciliation of the changes in components of other comprehensive income	For the Three Months Ended September 30, 2017 (Dollars in thousands) Pre Tax Tax Benefit After Tax Unrealized gains on available-for-sale securities $ 51 $ (19 ) $ 32 Less: net security gains reclassified into other noninterest income - - - Net change in fair value of securities available-for-sale 51 (19 ) 32 Reclassification adjustment for prior service costs and net gain included in net periodic pension costs (1) 162 (57 ) 105 Total other comprehensive income $ 213 $ (76 ) $ 137 For the Three Months Ended September 30, 2016 (Dollars in thousands) Pre Tax Tax Benefit After Tax Unrealized gains on available-for-sale securities $ 8 $ (3 ) $ 5 Less: net security gains reclassified into other noninterest income - - - Net change in fair value of securities available-for-sale 8 (3 ) 5 Reclassification adjustment for prior service costs and net gain included in net periodic pension costs (1) 164 (58 ) 106 Total other comprehensive income $ 172 $ (61 ) $ 111 For the Nine Months Ended September 30, 2017 (Dollars in thousands) Pre Tax Tax Benefit After Tax Unrealized gains on available-for-sale securities $ 229 $ (82 ) $ 147 Less: net security gains reclassified into other noninterest income - - - Net change in fair value of securities available-for-sale 229 (82 ) 147 Reclassification adjustment for prior service costs and net gain included in net periodic pension costs (1) 487 (172 ) 315 Total other comprehensive income $ 716 $ (254 ) $ 462 For the Nine Months Ended September 30, 2016 (Dollars in thousands) Pre Tax Tax Benefit After Tax Unrealized gains on available-for-sale securities $ 776 $ (275 ) $ 501 Less: net security gains reclassified into other noninterest income - - - Net change in fair value of securities available-for-sale 776 (275 ) 501 Reclassification adjustment for prior service costs and net gain included in net periodic pension costs (1) 491 (174 ) 317 Total other comprehensive income $ 1,267 $ (449 ) $ 818 (1) Amounts are included in salaries and employee benefits in the unaudited Consolidated Statements of Income.

Summary of Significant Accoun40

Summary of Significant Accounting Policies (Detail Textuals)	Sep. 30, 2017Branchshares	Jul. 21, 2013shares
Accounting Policies [Abstract]
Number of branch offices | Branch	24
Maximum number of shares authorized to repurchase		1,676,452
Percentage of current outstanding common stock as shares to be repurchased		10.00%
Number of shares remaining to repurchase	600,945

Summary of Significant Accoun41

Summary of Significant Accounting Policies (Detail Textuals 1) - USD ($)	9 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum limit of nonaccrual loans outstanding	$ 100,000
Foreclosed real estate included in prepaid expenses and other assets	0	$ 0
Recorded investment of consumer mortgage loans	$ 4,100,000
Defined benefit plans, general information	In addition to providing pension benefits, we provide certain health care and life insurance benefits for retired employees. Participants or eligible employees hired before January 1, 1993 become eligible for the benefits if they retire after reaching age 62 with fifteen or more years of service.
Real estate | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Threshold percentage limit of purchase price of the property	95.00%
Maximum limit loan-to-value ratio in percentage	80.00%
Home equity line of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum limit loan-to-value ratio in percentage	80.00%
Term of line of credit	9 years 10 months
Amortization period	20 years
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of unallocated allowances	0.00%
Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of unallocated allowances	5.00%

Restrictions on Cash and Due 42

Restrictions on Cash and Due from Banks (Detail Textuals) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Restrictions On Cash and Due From Banks [Abstract]
Cash and liquid assets required	$ 12.9	$ 9.5

Earnings Per Share - Calculatio

Earnings Per Share - Calculation of basic and diluted earnings per common share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings Per Share [Abstract]
Net income		$ 5,597	$ 3,773	$ 15,692	$ 11,029
Less: Dividends to participating shares		(4)	0	(10)	(18)
Income allocated to participating shares		(6)	(15)	(15)	(58)
Net income allocated to common stockholders		$ 5,587	$ 3,758	$ 15,667	$ 10,953
Weighted-average shares issued		17,975,443	17,968,628	17,970,204	17,974,118
Less: Average unallocated ESOP shares		(802,697)	(897,948)	(826,300)	(921,630)
Average treasury stock		(2,001,571)	(2,156,167)	(2,014,869)	(2,167,900)
Average unvested restricted stock		(27,796)	(90,599)	(22,557)	(114,306)
Weighted-average basic shares outstanding		15,143,379	14,823,914	15,106,478	14,770,282
Plus: Average dilutive shares		677,280	368,092	661,699	322,827
Weighted-average diluted shares outstanding		15,820,659	15,192,006	15,768,177	15,093,109
Net earnings per share:
Basic (in dollars per share)	[1]	$ 0.37	$ 0.25	$ 1.04	$ 0.74
Diluted (in dollars per share)	[1]	$ 0.35	$ 0.25	$ 0.99	$ 0.73
[1]	Certain per share amounts may not appear to reconcile due to rounding.

Earnings Per Share (Detail Text

Earnings Per Share (Detail Textuals) - shares	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of antidilutive securities excluded from earnings per share calculation	4,003	44,000

Investment Securities - Summary

Investment Securities - Summary (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Available-for-sale
Amortized Cost	$ 87,475	$ 103,925
Gross Unrealized Gains - Recognized in OCI	420	444
Gross Unrealized Losses - Recognized in OCI	(596)	(849)
Carrying Value	87,299	103,520
Gross Unrealized Gains - Not Recognized in OCI	0	0
Gross Unrealized Losses - Not Recognized in OCI	0	0
Fair Value	87,299	103,520
Held-to-maturity
Amortized Cost	56,848	33,061
Gross Unrealized Gains - Recognized in OCI	0	0
Gross unrealized losses - Recognized in OCI	0	0
Carrying Value	56,848	33,061
Gross Unrealized Gains - Not Recognized in OCI	261	63
Gross Unrealized Losses - Not Recognized in OCI	(154)	(83)
Fair Value	56,955	33,041
U.S. Treasury obligations
Available-for-sale
Amortized Cost	22,843	19,826
Gross Unrealized Gains - Recognized in OCI	168	142
Gross Unrealized Losses - Recognized in OCI	0	0
Carrying Value	23,011	19,968
Gross Unrealized Gains - Not Recognized in OCI	0	0
Gross Unrealized Losses - Not Recognized in OCI	0	0
Fair Value	23,011	19,968
Held-to-maturity
Amortized Cost	4,990
Gross Unrealized Gains - Recognized in OCI	0
Gross unrealized losses - Recognized in OCI	0
Carrying Value	4,990
Gross Unrealized Gains - Not Recognized in OCI	58
Gross Unrealized Losses - Not Recognized in OCI	0
Fair Value	5,048
U.S. Government agency obligations
Available-for-sale
Amortized Cost	54,000	73,996
Gross Unrealized Gains - Recognized in OCI	30	67
Gross Unrealized Losses - Recognized in OCI	(197)	(352)
Carrying Value	53,833	73,711
Gross Unrealized Gains - Not Recognized in OCI	0	0
Gross Unrealized Losses - Not Recognized in OCI	0	0
Fair Value	53,833	73,711
Held-to-maturity
Amortized Cost	31,000	16,000
Gross Unrealized Gains - Recognized in OCI	0	0
Gross unrealized losses - Recognized in OCI	0	0
Carrying Value	31,000	16,000
Gross Unrealized Gains - Not Recognized in OCI	0	0
Gross Unrealized Losses - Not Recognized in OCI	(154)	(83)
Fair Value	30,846	15,917
Government sponsored residential mortgage-backed securities
Available-for-sale
Amortized Cost	2,869	3,424
Gross Unrealized Gains - Recognized in OCI	140	145
Gross Unrealized Losses - Recognized in OCI	0	0
Carrying Value	3,009	3,569
Gross Unrealized Gains - Not Recognized in OCI	0	0
Gross Unrealized Losses - Not Recognized in OCI	0	0
Fair Value	3,009	3,569
Held-to-maturity
Amortized Cost	20,858	17,061
Gross Unrealized Gains - Recognized in OCI	0	0
Gross unrealized losses - Recognized in OCI	0	0
Carrying Value	20,858	17,061
Gross Unrealized Gains - Not Recognized in OCI	203	63
Gross Unrealized Losses - Not Recognized in OCI	0	0
Fair Value	21,061	17,124
Corporate debt securities
Available-for-sale
Amortized Cost	500	500
Gross Unrealized Gains - Recognized in OCI	2	15
Gross Unrealized Losses - Recognized in OCI	0	0
Carrying Value	502	515
Gross Unrealized Gains - Not Recognized in OCI	0	0
Gross Unrealized Losses - Not Recognized in OCI	0	0
Fair Value	502	515
Preferred equity securities
Available-for-sale
Amortized Cost	2,000	2,000
Gross Unrealized Gains - Recognized in OCI	0	0
Gross Unrealized Losses - Recognized in OCI	(150)	(254)
Carrying Value	1,850	1,746
Gross Unrealized Gains - Not Recognized in OCI	0	0
Gross Unrealized Losses - Not Recognized in OCI	0	0
Fair Value	1,850	1,746
Marketable equity securities
Available-for-sale
Amortized Cost	108	108
Gross Unrealized Gains - Recognized in OCI	80	75
Gross Unrealized Losses - Recognized in OCI	0	(1)
Carrying Value	188	182
Gross Unrealized Gains - Not Recognized in OCI	0	0
Gross Unrealized Losses - Not Recognized in OCI	0	0
Fair Value	188	182
Mutual funds
Available-for-sale
Amortized Cost	5,155	4,071
Gross Unrealized Gains - Recognized in OCI	0	0
Gross Unrealized Losses - Recognized in OCI	(249)	(242)
Carrying Value	4,906	3,829
Gross Unrealized Gains - Not Recognized in OCI	0	0
Gross Unrealized Losses - Not Recognized in OCI	0	0
Fair Value	$ 4,906	$ 3,829

Investment Securities - Gross u

Investment Securities - Gross unrealized losses and fair value (Details 1) $ in Thousands	Sep. 30, 2017USD ($)SecuritiesSecurity	Dec. 31, 2016USD ($)SecuritiesSecurity
Available-for-sale:
Number of Securities | Security	9	13
Less than 12 Months, Fair Value	$ 15,926	$ 66,644
Less than 12 months, Gross Unrealized Loss	(74)	(352)
12 months or more, Fair Value	37,632	5,582
12 months or more, Gross Unrealized Loss	(522)	(497)
Total, Fair Value	53,558	72,226
Total, Gross Unrealized Loss	$ (596)	$ (849)
Investment securities
Total investment securities in an unrealized loss position, Number of securities | Security	14	15
Total investment securities in an unrealized loss position, Less than 12 months, Fair value	$ 46,772	$ 78,561
Total investment securities in an unrealized loss position, Less than 12 months, Gross unrealized loss	(228)	(435)
Total investment securities in an unrealized loss position, 12 months or more, Fair value	37,632	5,582
Total investment securities in an unrealized loss position, 12 months or more, Gross unrealized loss	(522)	(497)
Total investment securities in an unrealized loss position, Fair value	84,404	84,143
Total investment securities in an unrealized loss position, Gross unrealized loss	$ (750)	$ (932)
U.S. Government agency obligations
Available-for-sale:
Number of Securities | Security	7	10
Less than 12 Months, Fair Value	$ 15,926	$ 66,644
Less than 12 months, Gross Unrealized Loss	(74)	(352)
12 months or more, Fair Value	30,877	0
12 months or more, Gross Unrealized Loss	(123)	0
Total, Fair Value	46,803	66,644
Total, Gross Unrealized Loss	$ (197)	$ (352)
Held-to-maturity
Number of Securities | Securities	5	2
Less than 12 months, Fair Value	$ 30,846	$ 11,917
Less than 12 months, Gross Unrealized Loss	(154)	(83)
12 months or more, Fair Value	0	0
12 months or more, Gross Unrealized Loss	0	0
Total, Fair Value	30,846	11,917
Total, Gross Unrealized Loss	$ (154)	$ (83)
Preferred equity securities
Available-for-sale:
Number of Securities | Security	1	1
Less than 12 Months, Fair Value	$ 0	$ 0
Less than 12 months, Gross Unrealized Loss	0	0
12 months or more, Fair Value	1,850	1,746
12 months or more, Gross Unrealized Loss	(150)	(254)
Total, Fair Value	1,850	1,746
Total, Gross Unrealized Loss	$ (150)	$ (254)
Marketable equity securities
Available-for-sale:
Number of Securities | Security		1
Less than 12 Months, Fair Value		$ 0
Less than 12 months, Gross Unrealized Loss		0
12 months or more, Fair Value		6
12 months or more, Gross Unrealized Loss		(1)
Total, Fair Value		6
Total, Gross Unrealized Loss		$ (1)
Mutual funds
Available-for-sale:
Number of Securities | Security	1	1
Less than 12 Months, Fair Value	$ 0	$ 0
Less than 12 months, Gross Unrealized Loss	0	0
12 months or more, Fair Value	4,905	3,830
12 months or more, Gross Unrealized Loss	(249)	(242)
Total, Fair Value	4,905	3,830
Total, Gross Unrealized Loss	$ (249)	$ (242)

Investment Securities - Amortiz

Investment Securities - Amortized cost and estimated market value of debt securities (Details 2) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Available-for-Sale - Amortized Cost
Due in one year or less	$ 39,496	$ 33,475
Due after one year through five years	37,847	60,847
Due after five years through ten years	0	0
Due after ten years	0	0
Government sponsored residential mortgage-backed securities	2,869	3,424
Available-for-sale, Amortized Cost	80,212	97,746
Available-for-Sale - Estimated Fair Value
Due in one year or less	39,443	33,490
Due after one year through five years	37,903	60,704
Due after five years through ten years	0	0
Due after ten years	0	0
Government sponsored residential mortgage-backed securities	3,009	3,569
Available-for-Sale, Estimated Fair Value	80,355	97,763
Held-to-Maturity - Amortized Cost
Due in one year or less	0	0
Due after one year through five years	30,990	16,000
Due after five years through ten years	5,000	0
Due after ten years	0	0
Government sponsored residential mortgage-backed securities	20,858	17,061
Held-to-Maturity, Amortized Cost	56,848	33,061
Held-to-Maturity - Estimated Fair Value
Due in one year or less	0	0
Due after one year through five years	30,919	15,917
Due after five years through ten years	4,975	0
Due after ten years	0	0
Government sponsored residential mortgage-backed securities	21,061	17,124
Held-to-Maturity, Estimated Fair Value	$ 56,955	$ 33,041

Investment Securities (Detail T

Investment Securities (Detail Textuals) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
U.S. Treasury, U.S. Government agency obligations and Government sponsored residential mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Fair value of securities	$ 115.8	$ 102.4

Investment Securities (Detail49

Investment Securities (Detail Textuals 1) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
FHLB Stock	$ 15,954	$ 16,378
Federal Home Loan Bank of Boston ("FHLBB") Stock
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
FHLB Stock	$ 16,000	$ 16,400

Investment Securities (Detail50

Investment Securities (Detail Textuals 2) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Schedule Of Available For Sale Securities and Held To Maturity [Line Items]
Amount of profit distributed in limited partnerships	$ 240,000	$ 179,000
Unfunded commitments for alternative investments	1,600,000
Other noninterest income
Schedule Of Available For Sale Securities and Held To Maturity [Line Items]
Other-than-temporary impairment charge on limited partnership	10,000	$ 219,000
Other assets
Schedule Of Available For Sale Securities and Held To Maturity [Line Items]
Alternative investments	$ 2,100,000		$ 2,200,000

Loans and Allowance for Loan 51

Loans and Allowance for Loan Losses - Summary (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 2,694,018		$ 2,543,668
Net deferred loan costs	4,595		3,844
Loans	2,698,613		2,547,512
Allowance for loan losses	(22,202)	$ (22,037)	(21,529)	$ (21,263)	$ (20,720)	$ (20,198)
Loans, net	2,676,411		2,525,983
Real estate | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	969,679		907,946
Allowance for loan losses	(4,020)	(4,254)	(4,134)	(3,844)	(3,744)	(4,084)
Real estate | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,028,930		979,370
Allowance for loan losses	(11,712)	(11,633)	(11,131)	(10,640)	(10,489)	(10,255)
Real estate | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	86,713		49,679
Allowance for loan losses	(760)	(651)	(425)	(429)	(327)	(231)
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	436,172		430,539
Allowance for loan losses	(4,273)	(4,077)	(4,400)	(4,779)	(4,630)	(4,119)
Home equity line of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	166,791		170,786
Allowance for loan losses	(1,392)	(1,379)	(1,398)	(1,533)	(1,491)	(1,470)
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	5,733		5,348
Allowance for loan losses	$ (45)	$ (43)	$ (41)	$ (38)	$ (39)	$ (39)

Loans and Allowance for Loan 52

Loans and Allowance for Loan Losses - Changes in allowance for loan losses by segments (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ 22,037	$ 20,720	$ 21,529	$ 20,198
Charge-offs	(118)	(162)	(664)	(686)
Recoveries	66	7	85	35
Provision for (Reduction of) loan losses	217	698	1,252	1,716
Balance at end of period	22,202	21,263	22,202	21,263
Real estate | Residential
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	4,254	3,744	4,134	4,084
Charge-offs	(46)	(57)	(79)	(81)
Recoveries	14	0	15	1
Provision for (Reduction of) loan losses	(202)	157	(50)	(160)
Balance at end of period	4,020	3,844	4,020	3,844
Real estate | Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	11,633	10,489	11,131	10,255
Charge-offs	0	0	(111)	0
Recoveries	0	0	2	0
Provision for (Reduction of) loan losses	79	151	690	385
Balance at end of period	11,712	10,640	11,712	10,640
Real estate | Construction
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	651	327	425	231
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for (Reduction of) loan losses	109	102	335	198
Balance at end of period	760	429	760	429
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	4,077	4,630	4,400	4,119
Charge-offs	(24)	(28)	(346)	(370)
Recoveries	45	0	45	10
Provision for (Reduction of) loan losses	175	177	174	1,020
Balance at end of period	4,273	4,779	4,273	4,779
Home equity line of credit
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	1,379	1,491	1,398	1,470
Charge-offs	0	(13)	0	(13)
Recoveries	0	0	0	0
Provision for (Reduction of) loan losses	13	55	(6)	76
Balance at end of period	1,392	1,533	1,392	1,533
Other
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	43	39	41	39
Charge-offs	(48)	(64)	(128)	(222)
Recoveries	7	7	23	24
Provision for (Reduction of) loan losses	43	56	109	197
Balance at end of period	$ 45	$ 38	$ 45	$ 38

Loans and Allowance for Loan 53

Loans and Allowance for Loan Losses - Allocation of the allowance by impairment methodology and by loan segment (Details 2) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Total - Loans individually evaluated for impairment	$ 29,924		$ 34,273
Reserve Allocation - Loans individually evaluated for impairment	187		278
Total - Loans collectively evaluated for impairment	2,668,689		2,513,239
Reserve Allocation - Loans collectively evaluated for impairment	22,015		21,251
Total loans	2,698,613		2,547,512
Total Reserve Allocation	22,202	$ 22,037	21,529	$ 21,263	$ 20,720	$ 20,198
Real estate | Residential
Financing Receivable, Allowance for Credit Losses [Line Items]
Total - Loans individually evaluated for impairment	12,715		12,778
Reserve Allocation - Loans individually evaluated for impairment	122		145
Total - Loans collectively evaluated for impairment	962,805		900,352
Reserve Allocation - Loans collectively evaluated for impairment	3,898		3,989
Total Reserve Allocation	4,020	4,254	4,134	3,844	3,744	4,084
Real estate | Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total - Loans individually evaluated for impairment	8,587		12,363
Reserve Allocation - Loans individually evaluated for impairment	0		14
Total - Loans collectively evaluated for impairment	1,019,141		965,718
Reserve Allocation - Loans collectively evaluated for impairment	11,712		11,117
Total Reserve Allocation	11,712	11,633	11,131	10,640	10,489	10,255
Real estate | Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
Total - Loans individually evaluated for impairment	4,532		4,532
Reserve Allocation - Loans individually evaluated for impairment	0		0
Total - Loans collectively evaluated for impairment	82,181		45,147
Reserve Allocation - Loans collectively evaluated for impairment	760		425
Total Reserve Allocation	760	651	425	429	327	231
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total - Loans individually evaluated for impairment	1,569		2,029
Reserve Allocation - Loans individually evaluated for impairment	59		112
Total - Loans collectively evaluated for impairment	434,559		428,466
Reserve Allocation - Loans collectively evaluated for impairment	4,214		4,288
Total Reserve Allocation	4,273	4,077	4,400	4,779	4,630	4,119
Home equity line of credit
Financing Receivable, Allowance for Credit Losses [Line Items]
Total - Loans individually evaluated for impairment	1,983		1,864
Reserve Allocation - Loans individually evaluated for impairment	0		0
Total - Loans collectively evaluated for impairment	164,808		168,922
Reserve Allocation - Loans collectively evaluated for impairment	1,392		1,398
Total Reserve Allocation	1,392	1,379	1,398	1,533	1,491	1,470
Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Total - Loans individually evaluated for impairment	538		707
Reserve Allocation - Loans individually evaluated for impairment	6		7
Total - Loans collectively evaluated for impairment	5,195		4,634
Reserve Allocation - Loans collectively evaluated for impairment	39		34
Total Reserve Allocation	$ 45	$ 43	$ 41	$ 38	$ 39	$ 39

Loans and Allowance for Loan 54

Loans and Allowance for Loan Losses - Nonperforming assets (Details 3) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccruing loans	$ 15,305	$ 17,561
Loans 90 days past due and still accruing	0	0
Other real estate owned	0	0
Total nonperforming assets	15,305	17,561
Real estate | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccruing loans	9,022	9,846
Loans 90 days past due and still accruing	0	0
Real estate | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccruing loans	73	976
Loans 90 days past due and still accruing	0	0
Real estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccruing loans	4,532	4,532
Loans 90 days past due and still accruing	0	0
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccruing loans	868	1,301
Loans 90 days past due and still accruing	0	0
Home equity line of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccruing loans	754	862
Loans 90 days past due and still accruing	0	0
Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total nonaccruing loans	56	44
Loans 90 days past due and still accruing	$ 0	$ 0

Loans and Allowance for Loan 55

Loans and Allowance for Loan Losses - Summary of loan delinquencies at recorded investment (Details 4) $ in Thousands	Sep. 30, 2017USD ($)Loan	Dec. 31, 2016USD ($)Loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	67	59
Loan receivable, recorded investment, past due	$ 17,808	$ 17,271
Loan receivable, recorded investment, past due 90 days or more and still accruing	$ 0	$ 0
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	26	19
Loan receivable, recorded investment, past due	$ 3,512	$ 1,539
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	15	9
Loan receivable, recorded investment, past due	$ 2,106	$ 1,637
> 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	26	31
Loan receivable, recorded investment, past due	$ 12,190	$ 14,095
Real estate | Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	47	39
Loan receivable, recorded investment, past due	$ 12,293	$ 10,734
Loan receivable, recorded investment, past due 90 days or more and still accruing	$ 0	$ 0
Real estate | Residential | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	15	10
Loan receivable, recorded investment, past due	$ 2,948	$ 1,226
Real estate | Residential | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	13	6
Loan receivable, recorded investment, past due	$ 2,091	$ 1,529
Real estate | Residential | > 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	19	23
Loan receivable, recorded investment, past due	$ 7,254	$ 7,979
Real estate | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	0	2
Loan receivable, recorded investment, past due	$ 0	$ 1,081
Loan receivable, recorded investment, past due 90 days or more and still accruing	$ 0	$ 0
Real estate | Commercial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	0	1
Loan receivable, recorded investment, past due	$ 0	$ 193
Real estate | Commercial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	0	0
Loan receivable, recorded investment, past due	$ 0	$ 0
Real estate | Commercial | > 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	0	1
Loan receivable, recorded investment, past due	$ 0	$ 888
Real estate | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	1	1
Loan receivable, recorded investment, past due	$ 4,532	$ 4,532
Loan receivable, recorded investment, past due 90 days or more and still accruing	$ 0	$ 0
Real estate | Construction | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	0	0
Loan receivable, recorded investment, past due	$ 0	$ 0
Real estate | Construction | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	0	0
Loan receivable, recorded investment, past due	$ 0	$ 0
Real estate | Construction | > 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	1	1
Loan receivable, recorded investment, past due	$ 4,532	$ 4,532
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	1	4
Loan receivable, recorded investment, past due	$ 25	$ 373
Loan receivable, recorded investment, past due 90 days or more and still accruing	$ 0	$ 0
Commercial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	0	1
Loan receivable, recorded investment, past due	$ 0	$ 54
Commercial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	0	0
Loan receivable, recorded investment, past due	$ 0	$ 0
Commercial | > 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	1	3
Loan receivable, recorded investment, past due	$ 25	$ 319
Home equity line of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	5	5
Loan receivable, recorded investment, past due	$ 734	$ 462
Loan receivable, recorded investment, past due 90 days or more and still accruing	$ 0	$ 0
Home equity line of credit | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	2	0
Loan receivable, recorded investment, past due	$ 372	$ 0
Home equity line of credit | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	0	2
Loan receivable, recorded investment, past due	$ 0	$ 85
Home equity line of credit | > 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	3	3
Loan receivable, recorded investment, past due	$ 362	$ 377
Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	13	8
Loan receivable, recorded investment, past due	$ 224	$ 89
Loan receivable, recorded investment, past due 90 days or more and still accruing	$ 0	$ 0
Other | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	9	7
Loan receivable, recorded investment, past due	$ 192	$ 66
Other | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	2	1
Loan receivable, recorded investment, past due	$ 15	$ 23
Other | > 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of loan receivable, recorded investment, past due | Loan	2	0
Loan receivable, recorded investment, past due	$ 17	$ 0

Loans and Allowance for Loan 56

Loans and Allowance for Loan Losses - Summary of information pertaining to impaired loans (Details 5) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Impaired loans without a valuation allowance
Recorded Investment	$ 28,865	$ 29,404
Unpaid Principal Balance	31,159	31,637
Impaired loans with a valuation allowance
Recorded Investment	1,059	4,869
Unpaid Principal Balance	1,868	5,582
Related Allowance	187	278
Total Recorded Investment	29,924	34,273
Total Unpaid Principal Balance	33,027	37,219
Total Related Allowance	187	278
Real estate | Residential
Impaired loans without a valuation allowance
Recorded Investment	11,748	11,046
Unpaid Principal Balance	13,645	12,833
Impaired loans with a valuation allowance
Recorded Investment	967	1,732
Unpaid Principal Balance	985	1,796
Related Allowance	122	145
Real estate | Commercial
Impaired loans without a valuation allowance
Recorded Investment	8,587	9,496
Unpaid Principal Balance	8,621	9,636
Impaired loans with a valuation allowance
Recorded Investment	0	2,867
Unpaid Principal Balance	0	2,867
Related Allowance	0	14
Real estate | Construction
Impaired loans without a valuation allowance
Recorded Investment	4,532	4,532
Unpaid Principal Balance	4,532	4,532
Impaired loans with a valuation allowance
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Commercial
Impaired loans without a valuation allowance
Recorded Investment	1,501	1,784
Unpaid Principal Balance	1,791	2,027
Impaired loans with a valuation allowance
Recorded Investment	68	245
Unpaid Principal Balance	859	894
Related Allowance	59	112
Home equity line of credit
Impaired loans without a valuation allowance
Recorded Investment	1,983	1,864
Unpaid Principal Balance	2,037	1,909
Impaired loans with a valuation allowance
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Other
Impaired loans without a valuation allowance
Recorded Investment	514	682
Unpaid Principal Balance	533	700
Impaired loans with a valuation allowance
Recorded Investment	24	25
Unpaid Principal Balance	24	25
Related Allowance	$ 6	$ 7

Loans and Allowance for Loan 57

Loans and Allowance for Loan Losses - Summary of average recorded investment and interest income recognized (Details 6) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Impaired loans without a valuation allowance
Average Recorded Investment			$ 28,914	$ 33,791
Interest Income Recognized	$ 160	$ 172	453	607
Impaired loans with a valuation allowance
Average Recorded Investment			2,739	5,065
Interest Income Recognized	13	44	78	142
Total Average Recorded Investment			31,653	38,856
Total Interest Income Recognized	173	216	531	749
Real estate | Residential
Impaired loans without a valuation allowance
Average Recorded Investment			11,599	11,394
Interest Income Recognized	33	22	91	71
Impaired loans with a valuation allowance
Average Recorded Investment			1,182	876
Interest Income Recognized	13	8	27	33
Real estate | Commercial
Impaired loans without a valuation allowance
Average Recorded Investment			8,772	12,850
Interest Income Recognized	101	125	293	396
Impaired loans with a valuation allowance
Average Recorded Investment			1,430	2,900
Interest Income Recognized	0	35	51	105
Real estate | Construction
Impaired loans without a valuation allowance
Average Recorded Investment			4,532	4,719
Interest Income Recognized	0	0	0	69
Impaired loans with a valuation allowance
Average Recorded Investment			0	0
Interest Income Recognized	0	0	0	0
Commercial
Impaired loans without a valuation allowance
Average Recorded Investment			1,458	2,552
Interest Income Recognized	7	8	16	27
Impaired loans with a valuation allowance
Average Recorded Investment			102	1,256
Interest Income Recognized	0	1	0	3
Home equity line of credit
Impaired loans without a valuation allowance
Average Recorded Investment			1,956	1,417
Interest Income Recognized	13	9	32	18
Impaired loans with a valuation allowance
Average Recorded Investment			0	0
Interest Income Recognized	0	0	0	0
Other
Impaired loans without a valuation allowance
Average Recorded Investment			597	859
Interest Income Recognized	6	8	21	26
Impaired loans with a valuation allowance
Average Recorded Investment			25	33
Interest Income Recognized	$ 0	$ 0	$ 0	$ 1

Loans and Allowance for Loan 58

Loans and Allowance for Loan Losses - Information modified in a troubled debt restructuring (Details 7) $ in Thousands	Sep. 30, 2017USD ($)Loan	Dec. 31, 2016USD ($)Loan
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status, Number of Loans | Loan	42	33
TDRs on Accrual Status, Recorded Investment | $	$ 6,006	$ 8,160
TDRs on Nonaccrual Status, Number of Loans | Loan	18	18
TDRs on Nonaccrual Status, Recorded Investment | $	$ 9,864	$ 10,090
Total TDRs, Number of Loans | Loan	60	51
Total TDRs, Recorded Investment | $	$ 15,870	$ 18,250
Real estate | Residential
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status, Number of Loans | Loan	19	15
TDRs on Accrual Status, Recorded Investment | $	$ 3,207	$ 2,581
TDRs on Nonaccrual Status, Number of Loans | Loan	11	9
TDRs on Nonaccrual Status, Recorded Investment | $	$ 4,212	$ 4,433
Total TDRs, Number of Loans | Loan	30	24
Total TDRs, Recorded Investment | $	$ 7,419	$ 7,014
Real estate | Commercial
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status, Number of Loans | Loan	2	2
TDRs on Accrual Status, Recorded Investment | $	$ 626	$ 3,333
TDRs on Nonaccrual Status, Number of Loans | Loan	0	0
TDRs on Nonaccrual Status, Recorded Investment | $	$ 0	$ 0
Total TDRs, Number of Loans | Loan	2	2
Total TDRs, Recorded Investment | $	$ 626	$ 3,333
Real estate | Construction
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status, Number of Loans | Loan	0	0
TDRs on Accrual Status, Recorded Investment | $	$ 0	$ 0
TDRs on Nonaccrual Status, Number of Loans | Loan	1	1
TDRs on Nonaccrual Status, Recorded Investment | $	$ 4,532	$ 4,532
Total TDRs, Number of Loans | Loan	1	1
Total TDRs, Recorded Investment | $	$ 4,532	$ 4,532
Commercial
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status, Number of Loans | Loan	2	3
TDRs on Accrual Status, Recorded Investment | $	$ 305	$ 485
TDRs on Nonaccrual Status, Number of Loans | Loan	4	6
TDRs on Nonaccrual Status, Recorded Investment | $	$ 791	$ 1,047
Total TDRs, Number of Loans | Loan	6	9
Total TDRs, Recorded Investment | $	$ 1,096	$ 1,532
Home equity line of credit
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status, Number of Loans | Loan	14	8
TDRs on Accrual Status, Recorded Investment | $	$ 1,345	$ 1,075
TDRs on Nonaccrual Status, Number of Loans | Loan	1	1
TDRs on Nonaccrual Status, Recorded Investment | $	$ 314	$ 58
Total TDRs, Number of Loans | Loan	15	9
Total TDRs, Recorded Investment | $	$ 1,659	$ 1,133
Other
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status, Number of Loans | Loan	5	5
TDRs on Accrual Status, Recorded Investment | $	$ 523	$ 686
TDRs on Nonaccrual Status, Number of Loans | Loan	1	1
TDRs on Nonaccrual Status, Recorded Investment | $	$ 15	$ 20
Total TDRs, Number of Loans | Loan	6	6
Total TDRs, Recorded Investment | $	$ 538	$ 706

Loans and Allowance for Loan 59

Loans and Allowance for Loan Losses - Recorded investment and number of modifications for modified loans (Details 8) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017USD ($)Loan	Sep. 30, 2016USD ($)Loan	Sep. 30, 2017USD ($)Loan	Sep. 30, 2016USD ($)Loan
Financing Receivable, Modifications [Line Items]
Number of Modifications | Loan		5	2	14	8
Recorded Investment Prior to Modification		$ 660	$ 348	$ 1,797	$ 1,333
Recorded Investment After Modification	[1]	$ 660	$ 348	$ 1,792	$ 1,330
Real estate | Residential
Financing Receivable, Modifications [Line Items]
Number of Modifications | Loan		1	1	7	1
Recorded Investment Prior to Modification		$ 140	$ 231	$ 1,093	$ 231
Recorded Investment After Modification	[1]	$ 140	$ 231	$ 1,089	$ 231
Real estate | Commercial
Financing Receivable, Modifications [Line Items]
Number of Modifications | Loan		1		1
Recorded Investment Prior to Modification		$ 171		$ 171
Recorded Investment After Modification	[1]	$ 171		$ 171
Commercial
Financing Receivable, Modifications [Line Items]
Number of Modifications | Loan			1		1
Recorded Investment Prior to Modification			$ 117		$ 117
Recorded Investment After Modification	[1]		$ 117		$ 117
Home equity line of credit
Financing Receivable, Modifications [Line Items]
Number of Modifications | Loan		3	0	6	6
Recorded Investment Prior to Modification		$ 349	$ 0	$ 533	$ 985
Recorded Investment After Modification	[1]	$ 349	$ 0	$ 532	$ 982
[1]	The period end balances are inclusive of all partial paydowns and charge-offs since the modification date. TDRs fully paid off, charged-off or foreclosed upon by period end are not included.

Loans and Allowance for Loan 60

Loans and Allowance for Loan Losses - TDR loans (Details 9) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017USD ($)Loan	Sep. 30, 2016USD ($)Loan	Sep. 30, 2017USD ($)Loan	Sep. 30, 2016USD ($)Loan
Financing Receivable, Modifications [Line Items]
Number of Modifications | Loan		5	2	14	8
Extended Maturity	[1]	$ 0	$ 117	$ 178	$ 117
Adjusted Interest Rates	[1]	0	0	0	0
Combination of Rate and Maturity	[1]	0	0	336	0
Other	[1]	660	231	1,278	1,213
Total		$ 660	$ 348	$ 1,792	$ 1,330
Real estate | Residential
Financing Receivable, Modifications [Line Items]
Number of Modifications | Loan		1	1	7	1
Extended Maturity	[1]	$ 0	$ 0	$ 90	$ 0
Adjusted Interest Rates	[1]	0	0	0	0
Combination of Rate and Maturity	[1]	0	0	336	0
Other	[1]	140	231	663	231
Total		$ 140	$ 231	$ 1,089	$ 231
Real estate | Commercial
Financing Receivable, Modifications [Line Items]
Number of Modifications | Loan		1		1
Extended Maturity	[1]	$ 0		$ 0
Adjusted Interest Rates	[1]	0		0
Combination of Rate and Maturity	[1]	0		0
Other	[1]	171		171
Total		$ 171		$ 171
Commercial
Financing Receivable, Modifications [Line Items]
Number of Modifications | Loan			1		1
Extended Maturity	[1]		$ 117		$ 117
Adjusted Interest Rates	[1]		0		0
Combination of Rate and Maturity	[1]		0		0
Other	[1]		0		0
Total			$ 117		$ 117
Home equity line of credit
Financing Receivable, Modifications [Line Items]
Number of Modifications | Loan		3		6	6
Extended Maturity	[1]	$ 0		$ 88	$ 0
Adjusted Interest Rates	[1]	0		0	0
Combination of Rate and Maturity	[1]	0		0	0
Other	[1]	349		444	982
Total		$ 349		$ 532	$ 982
[1]	The period end balances are inclusive of all partial paydowns and charge-offs since the modification date. TDRs fully paid off, charged-off or foreclosed upon by period end are not included.

Loans and Allowance for Loan 61

Loans and Allowance for Loan Losses - Risk rating (Details 10) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 2,694,018	$ 2,543,668
Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,626,789	2,499,108
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	30,958	6,864
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	36,271	37,696
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Real estate | Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	969,679	907,946
Real estate | Residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	958,934	896,861
Real estate | Residential | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,049	852
Real estate | Residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	9,696	10,233
Real estate | Residential | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Real estate | Commercial
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,028,930	979,370
Real estate | Commercial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,015,826	968,109
Real estate | Commercial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,009	1,991
Real estate | Commercial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	8,095	9,270
Real estate | Commercial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Real estate | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	86,713	49,679
Real estate | Construction | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	82,181	45,147
Real estate | Construction | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Real estate | Construction | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,532	4,532
Real estate | Construction | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial
Financing Receivable, Recorded Investment [Line Items]
Total loans	436,172	430,539
Commercial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	398,228	413,900
Commercial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	24,805	3,914
Commercial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	13,139	12,725
Commercial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Home equity line of credit
Financing Receivable, Recorded Investment [Line Items]
Total loans	166,791	170,786
Home equity line of credit | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	165,963	169,834
Home equity line of credit | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	74	83
Home equity line of credit | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	754	869
Home equity line of credit | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Other
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,733	5,348
Other | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,657	5,257
Other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	21	24
Other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	55	67
Other | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 0	$ 0

Loans and Allowance for Loan 62

Loans and Allowance for Loan Losses (Detail Textuals)	9 Months Ended
	Sep. 30, 2017USD ($)Loan	Sep. 30, 2016USD ($)	Dec. 31, 2016USD ($)
Receivables [Abstract]
Recorded investment balance of TDRs approximated	$ 15,870,000		$ 18,250,000
TDRs on accrual status	6,006,000		8,160,000
TDRs on nonaccrual status	$ 9,864,000		10,090,000
Percentage of accruing TDRs	100.00%
Allowance for loan losses included specific reserves	$ 128,000		160,000
Bank charge-offs	81,000	$ 28,000
Additional funds available to borrowers in TDR status	$ 18,000		$ 369,000
Number of construction loans that defaulted and had been modified as a TDR | Loan	1
Value of construction loans that defaulted and had been modified as a TDR	$ 4,500,000
Number of loan reviews undertaken by consulting firms | Loan	2
Threshold for percentage of market penetration for specified segment in loans of total lending	65.00%

Mortgage Servicing Rights (Deta

Mortgage Servicing Rights (Detail Textuals) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Servicing Assets At Amortized Value [Line Items]
Net gain on loans sold	$ 872,000	$ 939,000	$ 1,999,000	$ 2,180,000
Mortgage servicing rights impairment				283,000
Mortgage servicing rights
Servicing Assets At Amortized Value [Line Items]
Fair value of mortgage servicing rights	6,900,000		6,900,000		$ 6,200,000
Loans sold with servicing rights retained			86,900,000	106,900,000
Principal balance of loans serviced for others	585,100,000		585,100,000		540,400,000
Mortgage servicing rights | Other noninterest income
Servicing Assets At Amortized Value [Line Items]
Loan servicing fees			1,000,000	$ 897,000
Mortgage servicing rights | Prepaid expenses and other assets
Servicing Assets At Amortized Value [Line Items]
Carrying value of mortgage servicing rights	$ 5,300,000		$ 5,300,000		$ 4,800,000

Credit Arrangements (Detail Tex

Credit Arrangements (Detail Textuals) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Line of Credit Facility [Line Items]
Balance with the bank	$ 12,900,000	$ 9,500,000
Federal Home Loan Bank of Boston ("FHLBB") Stock | Line of credit
Line of Credit Facility [Line Items]
Pre-approved line of credit	8,800,000	8,800,000
Federal Home Loan Bank of Boston ("FHLBB") Stock | Unsecured line of credit with bank
Line of Credit Facility [Line Items]
Pre-approved line of credit	58,500,000	$ 58,500,000
Balance with the bank	$ 512,500

Credit Arrangements (Detail T65

Credit Arrangements (Detail Textuals 1) - Federal Home Loan Bank of Boston ("FHLBB") Stock - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank of Boston advances	$ 271.5	$ 287.1
Collateral value first mortgage loans	1,400	1,400
Line of credit facility, available borrowing capacity	591.3	544.7
Letter of credit	$ 79.5	$ 83.5
Minimum percent of aggregate principal amount of unpaid residential mortgage loans for acquiring shares in FHLBB	0.35%
Maximum percent of advances (borrowings) from the FHLBB to acquire shares in FHLBB	4.50%

Credit Arrangements (Detail T66

Credit Arrangements (Detail Textuals 2) - Discount Window Loan Collateral Program - Federal Reserve Bank Advances - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Short-term Debt [Line Items]
Amount borrowed under discount window loan collateral program	$ 66.7	$ 64.2
Collateralized amount of funding arrangement in pledged commercial real estate loans	$ 129.4	$ 128.7

Credit Arrangements (Detail T67

Credit Arrangements (Detail Textuals 3) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Line of Credit Facility [Line Items]
Securities with fair value	$ 23,900	$ 30,200
Repurchase liabilities	21,538	18,867
Master Repurchase Agreement Borrowing Facility | Broker
Line of Credit Facility [Line Items]
Securities with fair value	11,200	11,300
Outstanding borrowings	10,500	10,500
Repurchase liabilities	$ 21,500	$ 18,900

Deposits - Deposit balances and

Deposits - Deposit balances and weighted average interest rates (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
Noninterest-bearing demand deposits	$ 437,372	$ 441,283
Interest-bearing
NOW accounts	652,631	542,764
Money market	549,674	532,681
Savings accounts	233,330	233,792
Time deposits	509,544	464,570
Total interest-bearing deposits	1,945,179	1,773,807
Total deposits	$ 2,382,551	$ 2,215,090

Deposits (Detail Textuals)

Deposits (Detail Textuals) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
Brokered deposits	$ 38.9	$ 43.2
Time certificates of deposit in denominations of $250,000 or more	$ 120.1	$ 99.8

Pension and Other Postretirem70

Pension and Other Postretirement Benefit Plans - Components of net periodic pension and benefit costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Pension Benefits
Components of net periodic pension cost
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	251	264	751	789
Expected return on plan assets	(295)	(279)	(886)	(835)
Amortization:
Loss	176	176	530	528
Prior service cost	0	0	0	0
Recognized net gain	0	0	0	0
Net periodic benefit cost	132	161	395	482
Other Postretirement Benefits
Components of net periodic pension cost
Service cost	14	14	43	42
Interest cost	25	30	76	90
Expected return on plan assets	0	0	0	0
Amortization:
Loss	0	0	0	0
Prior service cost	(13)	(13)	(38)	(38)
Recognized net gain	(2)	0	(6)	0
Net periodic benefit cost	$ 24	$ 31	$ 75	$ 94

Pension and Other Postretirem71

Pension and Other Postretirement Benefit Plans - Shares held by ESOP (Details 1) - Farmington Bank Employee Stock Ownership Plan (ESOP)	Sep. 30, 2017shares
Employee Stock Ownership Plan (Esop) Disclosures [Line Items]
Allocated	572,166
Committed to be released	71,325
Unallocated	786,925
Total shares held by the ESOP	1,430,416

Pension and Other Postretirem72

Pension and Other Postretirement Benefit Plans (Detail Textuals) - Farmington Bank Employee Stock Ownership Plan (ESOP) - Farmington Bank - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Loan provided by the company to purchase common stock (in shares)	1,430,416
Debt structure direct loan description of variable rate basis	Wall Street Journal Prime Rate
Debt structure direct loan basis spread on variable rate	1.00%
Term of loan for annual payments of interest and principal	15 years
Outstanding balance of loan provided by the company to purchase common stock	$ 11.1
Interest rate of outstanding balance of Loan provided by the company to purchase common stock	4.75%
ESOP compensation expense	$ 1.8	$ 1.2
Fair value of unallocated ESOP shares	$ 21.1

Stock Incentive Plans - Weighte

Stock Incentive Plans - Weighted-average estimated fair values of stock option grants (Details) - Stock options - $ / shares	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted per share average fair value of options granted	$ 5.07	$ 3
Weighted-average assumptions:
Risk-free interest rate	1.99%	1.53%
Expected volatility	22.26%	22.88%
Expected dividend yield	2.16%	2.13%
Expected life of options granted	6 years	6 years
Minimum
Weighted-average assumptions:
Weighted-average dividend yield	2.07%	1.91%
Maximum
Weighted-average assumptions:
Weighted-average dividend yield	2.39%	2.25%

Stock Incentive Plans - Summary

Stock Incentive Plans - Summary of Company's stock option activity (Details 1) - Stock options $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)$ / sharesshares
Number of Stock Options
Outstanding at December 31, 2016 | shares	1,460,376
Granted | shares	26,900
Exercised | shares	(49,550)
Forfeited | shares	(300)
Expired | shares	0
Outstanding at September 30, 2017 | shares	1,437,426
Exercisable at September 30, 2017 | shares	1,383,626
Weighted-Average Exercise Price
Outstanding at December 31, 2016 | $ / shares	$ 13.14
Granted | $ / shares	26.08
Exercised | $ / shares	13.52
Forfeited | $ / shares	16.39
Expired | $ / shares	0
Outstanding at September 30, 2017 | $ / shares	13.36
Exercisable at September 30, 2017 | $ / shares	$ 13.06
Weighted-average remaining contractual term outstanding at September 30, 2017 (in years)	5 years 1 month 28 days
Weighted-average remaining contractual term Exercisable at September 30, 2017 (in years)	5 years 7 days
Aggregate intrinsic value of options outstanding at September 30, 2017 | $	$ 19,235
Aggregate intrinsic value of options exercisable at September 30, 2017 | $	$ 18,937

Stock Incentive Plans - Summa75

Stock Incentive Plans - Summary of status of Company's restricted stock (Details 2)	9 Months Ended
	Sep. 30, 2017$ / sharesshares
Restricted Stock Awards
Number of Restricted Stock
Unvested at December 31, 2016 | shares	0
Granted | shares	5,698
Vested | shares	(5,698)
Forfeited | shares	0
Unvested at September 30, 2017 | shares	0
Weighted-Average Grant Date Fair Value
Unvested at December 31, 2016 | $ / shares	$ 0
Granted | $ / shares	24.61
Vested | $ / shares	24.61
Forfeited | $ / shares	0
Unvested at September 30, 2017 | $ / shares	$ 0
Time-Based Restricted Stock Units
Number of Restricted Stock
Unvested at December 31, 2016 | shares	0
Granted | shares	14,012
Vested | shares	0
Forfeited | shares	0
Unvested at September 30, 2017 | shares	14,012
Weighted-Average Grant Date Fair Value
Unvested at December 31, 2016 | $ / shares	$ 0
Granted | $ / shares	24.48
Vested | $ / shares	0
Forfeited | $ / shares	0
Unvested at September 30, 2017 | $ / shares	$ 24.27
Performance-Based Restricted Stock Units
Number of Restricted Stock
Unvested at December 31, 2016 | shares	0
Granted | shares	14,686
Vested | shares	0
Forfeited | shares	0
Unvested at September 30, 2017 | shares	14,686
Weighted-Average Grant Date Fair Value
Unvested at December 31, 2016 | $ / shares	$ 0
Granted | $ / shares	21.60
Vested | $ / shares	0
Forfeited | $ / shares	0
Unvested at September 30, 2017 | $ / shares	$ 21.60

Stock Incentive Plans (Detail T

Stock Incentive Plans (Detail Textuals) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	May 31, 2016	Aug. 31, 2012
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of non-vested restricted shares	0		0		0
Time-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of stock awards			3 years
Number of non-vested restricted shares	14,012		14,012		0
Performance-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Description of vesting period and rights for stock awards			Performance-based restricted stock units vests after a three year performance period with a two year holding period. The units vest with a share quantity in a range from zero to 150% dependent on the Company's average return on average assets and earnings per share, each weighted 50%.
Number of non-vested restricted shares	14,686		14,686		0
2012 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for grants							2,503,228
2012 Stock Incentive Plan | Stock options | Vested Immediately
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage of stock awards			20.00%
2012 Stock Incentive Plan | Stock options | Vest each annual anniversary of the grant date and expire ten years after grant date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage of stock awards			20.00%
Expiry term of stock options			10 years
2012 Stock Incentive Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for grants							715,208
2012 Stock Incentive Plan | Non Qualified Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for grants							1,788,020
2016 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for grants						300,000
Share-based compensation expense	$ 144,000	$ 481,000	$ 328,000	$ 1,800,000
Method used			Black-Scholes option pricing model
2016 Stock Incentive Plan | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of stock awards			3 years
Expiry term of stock options			10 years
Share-based compensation expense	$ 21,000	199,000	$ 61,000	726,000
Number of non-vested options outstanding	53,800		53,800
Expected future compensation expense	$ 206,000		$ 206,000
Expected unrecognized compensation expense, weighted average period			2 years 4 months 24 days
Total intrinsic value of options exercised			$ 565,000
2016 Stock Incentive Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 124,000	$ 282,000	$ 267,000	$ 1,100,000
Number of non-vested restricted shares	28,698		28,698
Expected future compensation expense	$ 533,000		$ 533,000
Expected unrecognized compensation expense, weighted average period			2 years 5 months 5 days

Derivative Financial Instrume77

Derivative Financial Instruments - Not designated outstanding interest rate swaps (Details) - Not Designated as Hedging Instrument $ in Thousands	Sep. 30, 2017USD ($)Security	Dec. 31, 2016USD ($)Security
Other Assets | Commercial loan customer interest rate swap position
Derivatives, Fair Value [Line Items]
Number of Instruments | Security	61	51
Notional Amount	$ 310,307	$ 242,351
Estimated Fair Values	$ 7,709	$ 7,095
Other Liabilities | Commercial loan customer interest rate swap position
Derivatives, Fair Value [Line Items]
Number of Instruments | Security	28	33
Notional Amount	$ (127,605)	$ 148,097
Estimated Fair Values	$ (3,774)	$ (4,502)
Other Liabilities | Counterparty interest rate swap position
Derivatives, Fair Value [Line Items]
Number of Instruments | Security	89	84
Notional Amount	$ (437,912)	$ 390,448
Estimated Fair Values	$ (4,031)	$ (2,687)

Derivative Financial Instrume78

Derivative Financial Instruments - Changes in the fair value of non-hedge accounting derivatives (Details 1) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Derivative [Line Items]
Changes in fair value of non-hedge accounting derivatives	$ 0	$ 0	$ 0	$ 0
Interest Income Recorded in Interest Income
Derivative [Line Items]
Changes in fair value of non-hedge accounting derivatives	0	0	0	0
MTM Gain (Loss) Recorded in Noninterest Income
Derivative [Line Items]
Changes in fair value of non-hedge accounting derivatives	0	0	0	0
Commercial loan customer interest rate swap position
Derivative [Line Items]
Changes in fair value of non-hedge accounting derivatives	(1,126)	(3,062)	(2,728)	9,107
Commercial loan customer interest rate swap position | Interest Income Recorded in Interest Income
Derivative [Line Items]
Changes in fair value of non-hedge accounting derivatives	(972)	(1,468)	(3,342)	(4,281)
Commercial loan customer interest rate swap position | MTM Gain (Loss) Recorded in Noninterest Income
Derivative [Line Items]
Changes in fair value of non-hedge accounting derivatives	(154)	(1,594)	614	13,388
Counterparty interest rate swap position
Derivative [Line Items]
Changes in fair value of non-hedge accounting derivatives	1,126	3,062	2,728	(9,107)
Counterparty interest rate swap position | Interest Income Recorded in Interest Income
Derivative [Line Items]
Changes in fair value of non-hedge accounting derivatives	972	1,468	3,342	4,281
Counterparty interest rate swap position | MTM Gain (Loss) Recorded in Noninterest Income
Derivative [Line Items]
Changes in fair value of non-hedge accounting derivatives	$ 154	$ 1,594	$ (614)	$ (13,388)

Derivative Financial Instrume79

Derivative Financial Instruments (Detail Textuals) $ in Millions	Sep. 30, 2017USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Minimum threshold amount of long-term commercial loans or commercial mortgages to offer interest rate swap agreements	$ 1
Cash balance maintained with a correspondent bank to collateralize company's position	7.3
Outstanding receivables secured in excess of by a correspondent bank	10
Forward Contracts | Outstanding rate locks
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Mortgage banking derivatives, notional amount	20.7
Forward Contracts | Outstanding commitments to sell residential mortgage loans
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Mortgage banking derivatives, notional amount	19.6
Forward Contracts | Mandatory forward commitments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Mortgage banking derivatives, notional amount	$ 12.5

Offsetting of Financial Asset80

Offsetting of Financial Assets and Liabilities - Summary of repurchase agreement borrowings and repurchase liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreement borrowings	$ 10,500	$ 10,500
Total repurchase liabilities	21,538	18,867
Total	32,038	29,367
U.S. Government agency obligations
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreement borrowings	6,000	6,000
Total repurchase liabilities	21,538	18,867
Government sponsored residential mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreement borrowings	4,500	4,500
Overnight and Continuous
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreement borrowings	0	0
Total repurchase liabilities	21,538	18,867
Total	21,538	18,867
Overnight and Continuous | U.S. Government agency obligations
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreement borrowings	0	0
Total repurchase liabilities	21,538	18,867
Overnight and Continuous | Government sponsored residential mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreement borrowings	0	0
Up to One Year
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreement borrowings	10,500	0
Total repurchase liabilities	0	0
Total	10,500	0
Up to One Year | U.S. Government agency obligations
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreement borrowings	6,000	0
Total repurchase liabilities	0	0
Up to One Year | Government sponsored residential mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreement borrowings	4,500	0
One Year to Three Years
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreement borrowings	0	10,500
Total repurchase liabilities	0	0
Total	0	10,500
One Year to Three Years | U.S. Government agency obligations
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreement borrowings	0	6,000
Total repurchase liabilities	0	0
One Year to Three Years | Government sponsored residential mortgage-backed securities
Assets Sold under Agreements to Repurchase [Line Items]
Total repurchase agreement borrowings	$ 0	$ 4,500

Offsetting of Financial Asset81

Offsetting of Financial Assets and Liabilities - Potential effect of rights of setoff associated with recognized financial assets and liabilities (Details 1) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Interest rate swap derivatives, gross amount of recognized assets	$ 7,709	$ 7,095
Interest rate swap derivatives, gross amounts offset in statement of financial condition	0	0
Interest rate swap derivatives, Net amounts of assets presented in statement of financial condition	7,709	7,095
Interest rate swap derivatives, Gross amounts not offset in statement of financial condition, Financial instruments	0	0
Interest rate swap derivatives, Gross amounts not offset in statement of financial condition, securities collateral received	0	0
Interest rate swap derivatives, Gross amounts not offset in statement of financial condition, cash collateral received	7,250	2,000
Interest rate swap derivatives, Gross amounts not offset in statement of financial condition, Net amount	459	5,095
Gross amount of recognized assets	7,709	7,095
Gross amounts offset in statement of financial condition	0	0
Net amounts of assets presented in statement of financial condition	7,709	7,095
Gross amounts not offset in statement of financial condition, financial instruments	0	0
Gross amounts not offset in statement of financial condition, securities collateral received	0	0
Gross amounts not offset in statement of financial condition, cash collateral received	7,250	2,000
Gross amounts not offset in statement of financial condition, Net amount	459	5,095
Interest rate swap derivatives, Gross amount of recognized liabilities	7,805	7,189
Interest rate swap derivatives, Gross amounts offset in statement of financial condition	0	0
Interest rate swap derivatives, Net amounts of liabilities presented in statement of financial condition	7,805	7,189
Interest rate swap derivatives, Gross amounts not offset in statement of financial condition liabilities, Financial instruments	0	0
Interest rate swap derivatives, Gross amounts not offset in statement of financial condition, securities collateral pledged	0	0
Interest rate swap derivatives, Gross amounts not offset in statement of financial condition, cash collateral pledged	7,250	2,000
Interest rate swap derivatives, Gross amounts not offset in statement of financial condition liabilities, Net amount	555	5,189
Repurchase agreement borrowings, Gross amount of recognized liabilities	10,500	10,500
Repurchase agreement borrowings, Gross amounts offset in statement of financial condition	0	0
Repurchase agreement borrowings, Net amounts of liabilities presented in statement of financial condition	10,500	10,500
Repurchase agreement borrowings, Gross amounts not offset in statement of financial condition liabilities, financial instruments	0	0
Repurchase agreement borrowings, Gross amounts not offset in statement of financial condition, securities collateral pledged	10,245	10,500
Repurchase agreement borrowings, Gross amounts not offset in statement of financial condition, cash collateral pledged	255	0
Repurchase agreement borrowings, Net amount	0	0
Gross amount of recognized liabilities	18,305	17,689
Gross amounts offset in statement of financial condition	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Condition	18,305	17,689
Gross amounts not offset in statement of financial condition liabilities, Financial instruments	0	0
Gross amounts not offset in statement of financial condition, securities collateral pledged	10,245	10,500
Gross amounts not offset in statement of financial condition, cash collateral pledged	7,505	2,000
Gross amounts not offset in statement of financial condition liabilities, Net amount	$ 555	$ 5,189

Financial Instruments with Of82

Financial Instruments with Off-Balance Sheet Risk - Financial instruments whose contract amounts represent credit risk (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair value, off-balance sheet risks, amount, liability	$ 563,771	$ 609,548
Approved loan commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair value, off-balance sheet risks, amount, liability	71,127	102,436
Unadvanced portion of construction loans
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair value, off-balance sheet risks, amount, liability	42,687	57,124
Unused lines for home equity loans
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair value, off-balance sheet risks, amount, liability	208,005	199,191
Unused revolving lines of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair value, off-balance sheet risks, amount, liability	332	355
Unused commercial letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair value, off-balance sheet risks, amount, liability	4,621	3,820
Unused commercial lines of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair value, off-balance sheet risks, amount, liability	$ 236,999	$ 246,622

Financial Instruments with Of83

Financial Instruments with Off-Balance Sheet Risk (Detail Textuals) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Financial Instruments With Off Balance Sheet Risk Disclosure [Abstract]
Financial instruments with off-balance sheet risk, valuation allowance	$ 33,000	$ 153,000

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Assets
Securities available-for-sale		$ 87,299	$ 103,520
Total
Assets
Securities available-for-sale	[1]	87,299	103,520
Fair Value Measurements Recurring | Total
Assets
Securities available-for-sale		87,299	103,520
Total Assets		95,137	110,798
Liabilities
Total Liabilities		7,881	7,189
Fair Value Measurements Recurring | Total | U.S. Treasury obligations
Assets
Securities available-for-sale		23,011	19,968
Fair Value Measurements Recurring | Total | U.S. Government agency obligations
Assets
Securities available-for-sale		53,833	73,711
Fair Value Measurements Recurring | Total | Government sponsored residential mortgage-backed securities
Assets
Securities available-for-sale		3,009	3,569
Fair Value Measurements Recurring | Total | Corporate debt securities
Assets
Securities available-for-sale		502	515
Fair Value Measurements Recurring | Total | Preferred equity securities
Assets
Securities available-for-sale		1,850	1,746
Fair Value Measurements Recurring | Total | Marketable equity securities
Assets
Securities available-for-sale		188	182
Fair Value Measurements Recurring | Total | Mutual funds
Assets
Securities available-for-sale		4,906	3,829
Fair Value Measurements Recurring | Total | Interest rate swap derivative
Assets
Derivative Assets		7,709	7,095
Liabilities
Derivative Liabilities		7,805	7,189
Fair Value Measurements Recurring | Total | Derivative loan commitments
Assets
Derivative Assets		129	95
Fair Value Measurements Recurring | Total | Forward loan sales commitments
Assets
Derivative Assets			88
Liabilities
Derivative Liabilities		76
Fair Value Measurements Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Securities available-for-sale		13,035	1,928
Total Assets		13,035	1,928
Liabilities
Total Liabilities		0	0
Fair Value Measurements Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury obligations
Assets
Securities available-for-sale		10,997	0
Fair Value Measurements Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Government agency obligations
Assets
Securities available-for-sale		0	0
Fair Value Measurements Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Government sponsored residential mortgage-backed securities
Assets
Securities available-for-sale		0	0
Fair Value Measurements Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities
Assets
Securities available-for-sale		0	0
Fair Value Measurements Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Preferred equity securities
Assets
Securities available-for-sale		1,850	1,746
Fair Value Measurements Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Marketable equity securities
Assets
Securities available-for-sale		188	182
Fair Value Measurements Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mutual funds
Assets
Securities available-for-sale		0	0
Fair Value Measurements Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate swap derivative
Assets
Derivative Assets		0	0
Liabilities
Derivative Liabilities		0	0
Fair Value Measurements Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Derivative loan commitments
Assets
Derivative Assets		0	0
Fair Value Measurements Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Forward loan sales commitments
Assets
Derivative Assets			0
Liabilities
Derivative Liabilities		0
Fair Value Measurements Recurring | Significant Observable Inputs (Level 2)
Assets
Securities available-for-sale		74,264	101,592
Total Assets		81,973	108,687
Liabilities
Total Liabilities		7,805	7,189
Fair Value Measurements Recurring | Significant Observable Inputs (Level 2) | U.S. Treasury obligations
Assets
Securities available-for-sale		12,014	19,968
Fair Value Measurements Recurring | Significant Observable Inputs (Level 2) | U.S. Government agency obligations
Assets
Securities available-for-sale		53,833	73,711
Fair Value Measurements Recurring | Significant Observable Inputs (Level 2) | Government sponsored residential mortgage-backed securities
Assets
Securities available-for-sale		3,009	3,569
Fair Value Measurements Recurring | Significant Observable Inputs (Level 2) | Corporate debt securities
Assets
Securities available-for-sale		502	515
Fair Value Measurements Recurring | Significant Observable Inputs (Level 2) | Preferred equity securities
Assets
Securities available-for-sale		0	0
Fair Value Measurements Recurring | Significant Observable Inputs (Level 2) | Marketable equity securities
Assets
Securities available-for-sale		0	0
Fair Value Measurements Recurring | Significant Observable Inputs (Level 2) | Mutual funds
Assets
Securities available-for-sale		4,906	3,829
Fair Value Measurements Recurring | Significant Observable Inputs (Level 2) | Interest rate swap derivative
Assets
Derivative Assets		7,709	7,095
Liabilities
Derivative Liabilities		7,805	7,189
Fair Value Measurements Recurring | Significant Observable Inputs (Level 2) | Derivative loan commitments
Assets
Derivative Assets		0	0
Fair Value Measurements Recurring | Significant Observable Inputs (Level 2) | Forward loan sales commitments
Assets
Derivative Assets			0
Liabilities
Derivative Liabilities		0
Fair Value Measurements Recurring | Significant Unobservable Inputs (Level 3)
Assets
Securities available-for-sale		0	0
Total Assets		129	183
Liabilities
Total Liabilities		76	0
Fair Value Measurements Recurring | Significant Unobservable Inputs (Level 3) | U.S. Treasury obligations
Assets
Securities available-for-sale		0	0
Fair Value Measurements Recurring | Significant Unobservable Inputs (Level 3) | U.S. Government agency obligations
Assets
Securities available-for-sale		0	0
Fair Value Measurements Recurring | Significant Unobservable Inputs (Level 3) | Government sponsored residential mortgage-backed securities
Assets
Securities available-for-sale		0	0
Fair Value Measurements Recurring | Significant Unobservable Inputs (Level 3) | Corporate debt securities
Assets
Securities available-for-sale		0	0
Fair Value Measurements Recurring | Significant Unobservable Inputs (Level 3) | Preferred equity securities
Assets
Securities available-for-sale		0	0
Fair Value Measurements Recurring | Significant Unobservable Inputs (Level 3) | Marketable equity securities
Assets
Securities available-for-sale		0	0
Fair Value Measurements Recurring | Significant Unobservable Inputs (Level 3) | Mutual funds
Assets
Securities available-for-sale		0	0
Fair Value Measurements Recurring | Significant Unobservable Inputs (Level 3) | Interest rate swap derivative
Assets
Derivative Assets		0	0
Liabilities
Derivative Liabilities		0	0
Fair Value Measurements Recurring | Significant Unobservable Inputs (Level 3) | Derivative loan commitments
Assets
Derivative Assets		129	95
Fair Value Measurements Recurring | Significant Unobservable Inputs (Level 3) | Forward loan sales commitments
Assets
Derivative Assets			$ 88
Liabilities
Derivative Liabilities		$ 76
[1]	See previous table

Fair Value Measurements - Addit

Fair Value Measurements - Additional information about assets measured at fair value (Details 1) - Fair Value Measurements Recurring - Derivative and Forward Loan Sales Commitments, Net - Significant Unobservable Inputs (Level 3) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, at beginning of period	$ 131	$ 177	$ 183	$ 137
Total realized (loss) gain: Included in earnings	(78)	106	(130)	146
Balance, at the end of period	$ 53	$ 283	$ 53	$ 283

Fair Value Measurements - Valua

Fair Value Measurements - Valuation methodology and unobservable inputs for Level 3 assets (Details 2) - Fair Value Measurements Recurring - Level 3 - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value	$ 129	$ 183
Derivative and forward loan sales commitments, net
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value	$ 53	$ 183
Valuation Methodology	Adjusted quoted prices in active markets	Adjusted quoted prices in active markets
Significant Unobservable Inputs	Embedded servicing value	Embedded servicing value
Mortgage serving rights of input embedded servicing value percent	1.26%	1.33%

Fair Value Measurements - Ass87

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details 3) - Fair value, measurements, nonrecurring - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired loans	$ 0	$ 0
Significant Observable Inputs (Level 2)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired loans	0	0
Significant Unobservable Inputs (Level 3)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Impaired loans	$ 2,074	$ 3,727

Fair Value Measurements - Val88

Fair Value Measurements - Valuation methodology and unobservable inputs for Level 3 assets (Details 4) - Fair value, measurements, nonrecurring - Significant Unobservable Inputs (Level 3) - Impaired loans - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value	$ 2,074	$ 3,727
Valuation Methodology	Appraisals	Appraisals
Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount for dated appraisal	5.00%	5.00%
Discount for costs to sell	8.00%	8.00%
Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount for dated appraisal	20.00%	20.00%
Discount for costs to sell	15.00%	15.00%
Weighted Average
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount for dated appraisal	12.50%	12.50%
Discount for costs to sell	11.50%	11.50%

Fair Value Measurements - Carry

Fair Value Measurements - Carrying amount, fair value of financial instruments (Details 5) - USD ($) $ in Thousands		Sep. 30, 2017	Dec. 31, 2016
Financial assets
Securities held-to-maturity		$ 56,848	$ 33,061
Securities available-for-sale		87,299	103,520
Loans	[1]	2,698,613	2,547,512
Financial liabilities
Time deposits		509,544	464,570
Federal Home Loan Bank of Boston advances		271,458	287,057
Repurchase agreement borrowings		10,500	10,500
Repurchase liabilities		21,538	18,867
Carrying Amount
Financial assets
Securities held-to-maturity	[2]	56,848	33,061
Securities available-for-sale	[3]	87,299	103,520
Loans	[4]	2,698,613	2,547,512
Loans held-for-sale	[2]	6,902	3,270
Mortgage servicing rights	[4]	5,269	4,817
Federal Home Loan Bank of Boston stock	[2]	15,954	16,378
Alternative investments	[4]	2,112	2,228
Interest rate swap derivatives	[2]	7,709	7,095
Derivative loan commitments	[4]	129	95
Forward loan sales commitments	[4]	0	88
Financial liabilities
Deposits other than time deposits	[5]	1,873,007	1,773,807
Time deposits	[2]	509,544	464,570
Federal Home Loan Bank of Boston advances	[2]	271,458	287,057
Repurchase agreement borrowings	[2]	10,500	10,500
Repurchase liabilities	[2]	21,538	18,867
Interest rate swap derivatives	[2]	7,805	7,189
Forward loan sales commitments	[4]	76	0
Estimated Fair Value
Financial assets
Securities held-to-maturity	[2]	56,955	33,041
Securities available-for-sale	[3]	87,299	103,520
Loans	[4]	2,660,753	2,515,906
Loans held-for-sale	[2]	7,000	3,289
Mortgage servicing rights	[4]	6,886	6,166
Federal Home Loan Bank of Boston stock	[2]	15,954	16,378
Alternative investments	[4]	2,302	2,045
Interest rate swap derivatives	[2]	7,709	7,095
Derivative loan commitments	[4]	129	95
Forward loan sales commitments	[4]	0	88
Financial liabilities
Deposits other than time deposits	[5]	1,873,007	1,773,807
Time deposits	[2]	513,662	468,472
Federal Home Loan Bank of Boston advances	[2]	270,414	286,629
Repurchase agreement borrowings	[2]	10,438	10,428
Repurchase liabilities	[2]	21,528	18,862
Interest rate swap derivatives	[2]	7,805	7,189
Forward loan sales commitments	[4]	$ 76	$ 0
[1]	Loans include net deferred loan costs of $4.6 million and $3.8 million at September 30, 2017 and December 31, 2016, respectively.
[2]	Level 2
[3]	See previous table
[4]	Level 3
[5]	Level 1

Fair Value Measurements (Detail

Fair Value Measurements (Detail Textuals) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured On Recurring and Nonrecurring Basis [Line Items]
Profit distributions in limited partnerships for alternative investments	$ 240,000	$ 179,000
Unfunded commitments for alternative investments	1,600,000
Other noninterest income
Fair Value, Assets and Liabilities Measured On Recurring and Nonrecurring Basis [Line Items]
Recognized (loss) gain on forward loan sale commitments	(130,000)	146,000
Other-than-temporary impairment charge on limited partnership	10,000	$ 219,000
Other assets
Fair Value, Assets and Liabilities Measured On Recurring and Nonrecurring Basis [Line Items]
Total alternative investments	$ 2,100,000		$ 2,200,000

Regulatory Matters - Actual cap

Regulatory Matters - Actual capital amounts and ratios (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets) Actual Amount	$ 301,448	$ 288,273
Total Capital (to Risk Weighted Assets) Actual Ratio	12.50%	12.80%
Total Capital (to Risk Weighted Assets) Minimum Required for Capital Adequacy Purposes Amount	$ 192,995	$ 180,113
Total Capital (to Risk Weighted Assets) Minimum Required for Capital Adequacy Purposes Ratio	8.00%	8.00%
Total Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Amount	$ 241,243	$ 225,141
Total Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Ratio	10.00%	10.00%
Tier I Capital (to Risk Weighted Assets) Actual Amount	$ 279,213	$ 266,591
Tier I Capital (to Risk Weighted Assets) Actual Ratio	11.57%	11.84%
Tier I Capital (to Risk Weighted Assets) Minimum Required for Capital Adequacy Purposes Amount	$ 144,745	$ 135,084
Tier I Capital (to Risk Weighted Assets) Minimum Required for Capital Adequacy Purposes Ratio	6.00%	6.00%
Tier I Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Amount	$ 192,993	$ 180,112
Tier I Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Ratio	8.00%	8.00%
Common Equity Tier I Capital (to Risk Weighted Assets) Actual Amount	$ 279,213	$ 266,591
Common Equity Tier I Capital (to Risk Weighted Assets) Actual Ratio	11.57%	11.84%
Common Equity Tier I Capital (to Risk Weighted Assets) Minimum Required for Capital Adequacy Purposes Amount	$ 108,559	$ 101,313
Common Equity Tier I Capital (to Risk Weighted Assets) Minimum Required for Capital Adequacy Purposes Ratio	4.50%	4.50%
Common Equity Tier I Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Amount	$ 156,807	$ 146,341
Common Equity Tier I Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Ratio	6.50%	6.50%
Tier I Leverage Capital (to Average Assets) Actual Amount	$ 279,213	$ 266,591
Tier I Leverage Capital (to Average Assets) Actual Ratio	9.23%	9.39%
Tier I Leverage Capital (to Average Assets) Minimum Required for Capital Adequacy Purposes Amount	$ 120,980	$ 113,624
Tier I Leverage Capital (to Average Assets) Minimum Required for Capital Adequacy Purposes Ratio	4.00%	4.00%
Tier I Leverage Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Amount	$ 151,225	$ 142,030
Tier I Leverage Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Ratio	5.00%	5.00%
Farmington Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total Capital (to Risk Weighted Assets) Actual Amount	$ 271,162	$ 253,921
Total Capital (to Risk Weighted Assets) Actual Ratio	11.24%	11.28%
Total Capital (to Risk Weighted Assets) Minimum Required for Capital Adequacy Purposes Amount	$ 192,976	$ 180,043
Total Capital (to Risk Weighted Assets) Minimum Required for Capital Adequacy Purposes Ratio	8.00%	8.00%
Total Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Amount	$ 241,219	$ 225,053
Total Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Ratio	10.00%	10.00%
Tier I Capital (to Risk Weighted Assets) Actual Amount	$ 248,927	$ 232,239
Tier I Capital (to Risk Weighted Assets) Actual Ratio	10.32%	10.32%
Tier I Capital (to Risk Weighted Assets) Minimum Required for Capital Adequacy Purposes Amount	$ 144,731	$ 135,033
Tier I Capital (to Risk Weighted Assets) Minimum Required for Capital Adequacy Purposes Ratio	6.00%	6.00%
Tier I Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Amount	$ 192,974	$ 180,044
Tier I Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Ratio	8.00%	8.00%
Common Equity Tier I Capital (to Risk Weighted Assets) Actual Amount	$ 248,927	$ 232,239
Common Equity Tier I Capital (to Risk Weighted Assets) Actual Ratio	10.32%	10.32%
Common Equity Tier I Capital (to Risk Weighted Assets) Minimum Required for Capital Adequacy Purposes Amount	$ 108,548	$ 101,275
Common Equity Tier I Capital (to Risk Weighted Assets) Minimum Required for Capital Adequacy Purposes Ratio	4.50%	4.50%
Common Equity Tier I Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Amount	$ 156,791	$ 146,286
Common Equity Tier I Capital (to Risk Weighted Assets) To Be Well Capitalized Under Prompt Corrective Action Ratio	6.50%	6.50%
Tier I Leverage Capital (to Average Assets) Actual Amount	$ 248,927	$ 232,239
Tier I Leverage Capital (to Average Assets) Actual Ratio	8.25%	8.18%
Tier I Leverage Capital (to Average Assets) Minimum Required for Capital Adequacy Purposes Amount	$ 120,717	$ 113,598
Tier I Leverage Capital (to Average Assets) Minimum Required for Capital Adequacy Purposes Ratio	4.00%	4.00%
Tier I Leverage Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Amount	$ 150,896	$ 141,997
Tier I Leverage Capital (to Average Assets) To Be Well Capitalized Under Prompt Corrective Action Ratio	5.00%	5.00%

Regulatory Matters (Detail Text

Regulatory Matters (Detail Textuals)	Sep. 30, 2017
Regulatory Matters Disclosure [Abstract]
Percentage of Tier 1 capital greater than risk weighted assets	2.50%

Other Comprehensive Income - Ch

Other Comprehensive Income - Changes in accumulated other comprehensive loss, net of tax (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning			$ (6,690)
Balance at ending	$ (6,228)		(6,228)
Investment Securities Available-for-Sale
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning	(148)	$ 247	(263)	$ (249)
Other comprehensive income during the period	32	5	147	501
Amount reclassified from accumulated other comprehensive income, net of tax	0	0	0	0
Net change	32	5	147	501
Balance at ending	(116)	252	(116)	252
Employee Benefit Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning	(6,217)	(6,702)	(6,427)	(6,913)
Other comprehensive income during the period	0	0	0	0
Amount reclassified from accumulated other comprehensive income, net of tax	105	106	315	317
Net change	105	106	315	317
Balance at ending	(6,112)	(6,596)	(6,112)	(6,596)
Accumulated Other Comprehensive (Loss) Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning	(6,365)	(6,455)	(6,690)	(7,162)
Other comprehensive income during the period	32	5	147	501
Amount reclassified from accumulated other comprehensive income, net of tax	105	106	315	317
Net change	137	111	462	818
Balance at ending	$ (6,228)	$ (6,344)	$ (6,228)	$ (6,344)

Other Comprehensive Income - Re

Other Comprehensive Income - Reconciliation of changes in components of other comprehensive income including amount of income tax expense allocated to each component of other comprehensive income (Details 1) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Unrealized gains (losses) on available-for-sale securities, Pre Tax Amount		$ 51	$ 8	$ 229	$ 776
Unrealized gains (losses) on available-for-sale securities, Tax Benefit (Expense)		(19)	(3)	(82)	(275)
Unrealized gains (losses) on available-for-sale securities, After Tax Amount		32	5	147	501
Less: net security gains reclassified into other noninterest income, Pre Tax Amount		0	0	0	0
Less: net security gains reclassified into other noninterest income, Tax Benefit (Expense)		0	0	0	0
Less: net security gains reclassified into other noninterest income, After Tax Amount		0	0	0	0
Net change in fair value of securities available-for-sale, Pre Tax Amount		51	8	229	776
Net change in fair value of securities available-for-sale, Tax Benefit (Expense)		(19)	(3)	(82)	(275)
Net change in fair value of securities available-for-sale, After Tax Amount		32	5	147	501
Reclassification adjustment for prior service costs and net gain included in net periodic pension costs, Pre Tax Amount	[1]	162	164	487	491
Reclassification adjustment for prior service costs and net gain included in net periodic pension costs, Tax Benefit (Expense)	[1]	(57)	(58)	(172)	(174)
Reclassification adjustment for prior service costs and net gain included in net periodic pension costs, After Tax Amount	[1]	105	106	315	317
Total other comprehensive income (loss), Pre Tax Amount		213	172	716	1,267
Total other comprehensive income (loss), Tax Benefit (Expense)		(76)	(61)	(254)	(449)
Other comprehensive income, net of tax		$ 137	$ 111	$ 462	$ 818
[1]	Amounts are included in salaries and employee benefits in the unaudited Consolidated Statements of Income.