Blue Hills Bancorp (BHBK) 10-Q 3 Nov 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2017	Oct. 31, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	Blue Hills Bancorp, Inc.
Entity Central Index Key	1,601,545
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		26,826,830

Consolidated Balance Sheets (un

Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 16,171	$ 14,752
Short-term investments	22,192	15,744
Total cash and cash equivalents	38,363	30,496
Securities available for sale, at fair value	9,943	204,836
Securities held to maturity, at amortized cost	302,833	201,027
Federal Home Loan Bank stock, at cost	9,410	13,352
Loans held for sale	12,268	2,761
Loans, net of allowance for loan losses of $20,248 at September 30, 2017 and $18,750 at December 31, 2016	2,067,287	1,912,871
Premises and equipment, net	21,850	22,034
Accrued interest receivable	5,802	6,057
Goodwill	9,160	9,160
Core deposit intangible	732	1,400
Net deferred tax asset	9,295	10,146
Bank-owned life insurance	32,800	32,015
Other assets	25,673	23,537
Total assets	2,545,416	2,469,692
Deposits:
Non-interest bearing	212,316	184,982
Interest bearing	1,773,237	1,623,705
Total deposits	1,985,553	1,808,687
Short-term borrowings	20,000	146,000
Long-term debt	110,000	105,000
Accrued expenses and other liabilities	30,829	23,098
Total liabilities	2,146,382	2,082,785
Stockholders' Equity:
Preferred stock, zero par value, (50,000,000 shares authorized; none issued and outstanding)	0	0
Common stock, $0.01 par value, (100,000,000 shares authorized; 26,869,088 and 26,759,953 issued and outstanding at September 30, 2017 and December 31, 2016, respectively)	259	259
Additional paid-in capital	254,034	249,317
Unearned compensation-ESOP	(19,927)	(20,496)
Retained earnings	166,282	161,896
Accumulated other comprehensive loss	(1,614)	(4,069)
Total stockholders' equity	399,034	386,907
Total liabilities and stockholders' equity	$ 2,545,416	$ 2,469,692

Consolidated Balance Sheets (u3

Consolidated Balance Sheets (unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Loans, net of allowance for loan losses of $20,248 at September 30, 2017 and $18,750 at December 31, 2016	$ 20,248	$ 18,750
Preferred stock, par value (dollars per share)	$ 0	$ 0
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	26,869,088	26,759,953
Common stock, shares outstanding	26,869,088	26,759,953

Consolidated Statements of Net

Consolidated Statements of Net 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 dividend income:
Interest and fees on loans	$ 19,721	$ 15,113	$ 55,818	$ 42,854
Interest on securities	1,565	2,238	5,347	6,570
Dividends	194	312	544	606
Other	65	22	191	74
Total interest and dividend income	21,545	17,685	61,900	50,104
Interest expense:
Interest on deposits	4,089	2,732	10,866	7,508
Interest on borrowings	502	458	1,791	1,584
Total interest expense	4,591	3,190	12,657	9,092
Net interest and dividend income	16,954	14,495	49,243	41,012
Provision for loan losses	242	2,872	1,417	3,958
Net interest and dividend income, after provision for loan losses	16,712	11,623	47,826	37,054
Non-interest income:
Deposit account fees	385	347	1,046	971
Interchange and ATM fees	455	418	1,191	1,158
Mortgage banking	1,146	1,262	3,105	2,037
Loss on sale of purchased home equity portfolio	(118)	0	(118)	0
Loan level derivative income	156	770	1,687	1,731
Gain (loss) on sales and calls of available for sale securities, net	0	562	(94)	982
Gain on exchange of investment in Northeast Retirement Services	0	0	5,947	0
Bank-owned life insurance income	268	262	786	776
Bank-owned life insurance death benefit gains	0	297	0	506
Miscellaneous	534	214	602	159
Total non-interest income	2,826	4,132	14,152	8,320
Non-interest expense:
Salaries and employee benefits	7,979	7,596	23,206	21,619
Occupancy and equipment	2,024	1,807	6,169	5,079
Data processing	1,016	908	3,082	2,472
Professional fees	340	743	1,735	1,902
Advertising	563	495	1,419	1,746
FDIC deposit insurance	226	270	661	968
Directors’ fees	382	344	1,184	1,081
Amortization of core deposit intangible	199	294	668	954
Other general and administrative	626	777	1,997	2,416
Total non-interest expense	13,355	13,234	40,121	38,237
Income before income taxes	6,183	2,521	21,857	7,137
Provision for income taxes	2,342	891	6,661	2,482
Net income	$ 3,841	$ 1,630	$ 15,196	$ 4,655
Earnings per common share:
Basic (dollars per share)	$ 0.16	$ 0.07	$ 0.63	$ 0.19
Diluted (dollars per share)	$ 0.16	$ 0.07	$ 0.62	$ 0.19
Weighted average shares outstanding:
Basic (shares)	23,973,116	24,129,512	23,945,885	24,585,570
Diluted (shares)	24,510,092	24,307,540	24,377,662	24,708,559

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 Comprehensive Income [Abstract]
Net income		$ 3,841	$ 1,630	$ 15,196	$ 4,655
Securities available for sale:
Change in unrealized holding gains (losses)		(494)	2,198	3,499	9,125
Reclassification adjustment for net losses realized in net income	[1]	0	(562)	94	(937)
Net change in unrealized gains (losses)		(494)	1,636	3,593	8,188
Tax effect		197	(570)	(1,230)	(2,858)
Net-of-tax amount		(297)	1,066	2,363	5,330
Securities held to maturity:
Reclassification adjustment for amortization of amounts previously recorded upon transfer from available-for-sale	[2]	(22)	(39)	(67)	(188)
Tax effect		8	14	13	67
Net-of-tax amount		(14)	(25)	(54)	(121)
Defined benefit pension plan:
Reclassification adjustment for net actuarial loss recognized in net periodic benefit cost	[3]	89	68	267	204
Tax effect		(31)	(24)	(121)	(72)
Net-of-tax amount		58	44	146	132
Other comprehensive income (loss)		(253)	1,085	2,455	5,341
Comprehensive income		$ 3,588	$ 2,715	$ 17,651	$ 9,996
[1]	Amounts are included in gain (loss) on sales and calls of available for sale securities, net, in the consolidated statements of net income. Income tax expense associated with the reclassification adjustment for the three months ended September 30, 2016 was $196,000. Income tax (benefit) expense associated with the reclassification adjustments for the nine months ended September 30, 2017 and 2016 was $(32,000) and $327,000, respectively.
[2]	Amounts are included in interest income on securities in the consolidated statements of net income.
[3]	Amounts are included in salaries and benefits expense in the consolidated statements of net income.

Consolidated Statements of Com6

Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Reclassification adjustment for net losses realized in net income, tax	$ 196	$ (32)	$ 327

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity (unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional paid-in capital	Unearned compensation- ESOP	Retained earnings	Accumulated other comprehensive (loss) income
Beginning balance at Dec. 31, 2015	$ 398,829	$ 276	$ 269,078	$ (21,255)	$ 155,918	$ (5,188)
Beginning balance (shares) at Dec. 31, 2015		28,492,732
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	9,996				4,655	5,341
ESOP shares committed to be released	818		249	569
Common stock dividends declared ($0.08 and $0.45 per common share for the nine months ended September 30, 2016 and 2017, respectively)	(1,953)				(1,953)
Repurchase of common stock (shares)		(1,517,840)
Repurchase of common stock	(21,607)	$ (15)	(21,592)
Restricted stock awards granted (shares)		31,450
Restricted stock awards forfeited (shares)		(9,400)
Share-based compensation expense	3,606		3,606
Ending balance at Sep. 30, 2016	389,689	$ 261	251,341	(20,686)	158,620	153
Ending balance (shares) at Sep. 30, 2016		26,996,942
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of change in accounting principle (Note 1)			27		(27)
Beginning balance at Dec. 31, 2016	386,907	$ 259	249,317	(20,496)	161,896	(4,069)
Beginning balance (shares) at Dec. 31, 2016		26,759,953
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	17,651				15,196	2,455
ESOP shares committed to be released	1,041		472	569
Common stock dividends declared ($0.08 and $0.45 per common share for the nine months ended September 30, 2016 and 2017, respectively)	(10,783)				(10,783)
Restricted stock awards granted (shares)		184,695
Restricted stock awards forfeited (shares)		(85,317)
Restricted stock awards forfeited	0		0
Share-based compensation expense	4,108		4,108
Share redemption for tax withholdings for restricted stock vesting (shares)		(5,903)
Share redemption for tax withholdings for restricted stock vesting	$ (107)		(107)
Proceeds from exercise of options (shares)	15,660	15,660
Proceeds from exercise of options	$ 217		217
Ending balance at Sep. 30, 2017	$ 399,034	$ 259	$ 254,034	$ (19,927)	$ 166,282	$ (1,614)
Ending balance (shares) at Sep. 30, 2017		26,869,088

Consolidated Statements of Cha8

Consolidated Statements of Changes in Stockholders' Equity (unaudited) (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Statement of Stockholders' Equity [Abstract]
Common stock paid (dollars per share)	$ 0.45	$ 0.08

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	$ 15,196	$ 4,655
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	1,417	3,958
Net amortization of securities	1,363	2,427
Loss (gain) on sales and calls of available for sale securities, net	94	(982)
Net change in loans held for sale	(9,507)	(479)
Losses (gains) on sales of residential portfolio loans, net	(58)	(319)
Loss on sale of purchased home equity portfolio	118	0
Net amortization of net deferred loan origination costs and discounts	105	414
Depreciation and amortization of premises and equipment	1,596	1,448
Amortization of core deposit intangible	668	954
Bank-owned life insurance income, including death benefit gains	(786)	(1,282)
ESOP expense	1,041	818
Deferred income tax benefit	(487)	(978)
Share-based compensation expense	4,108	3,606
Gain on exchange of investment in Northeast Retirement Services	(5,947)	0
Net change in:
Accrued interest receivable	255	(44)
Other assets	(3,350)	(13,235)
Accrued expenses and other liabilities	3,753	12,359
Net cash provided by operating activities	9,579	13,320
Activity in securities available for sale:
Purchases	(13,951)	(54,835)
Sales	213,084	78,990
Maturities/calls	0	2,820
Principal paydowns	5,049	2,129
Activity in securities held to maturity:
Purchases	(151,363)	(46,396)
Maturities/calls	25,000	22,235
Principal paydowns	23,557	25,307
Loan originations and purchases, net of paydowns	(219,759)	(232,209)
Net purchases of premises and equipment	(1,412)	(2,795)
Purchase of FHLBB stock	(4,309)	(4,044)
Redemption of FHLBB stock	8,251	4,106
Proceeds from exchange of investment in Northeast Retirement Services	1,595	0
Proceeds from bank-owned life insurance death benefit	0	1,165
Net cash used in investing activities	(50,497)	(182,364)
Cash flows from financing activities:
Net change in deposits, excluding brokered deposits	200,869	209,201
Net change in brokered deposits	(24,003)	38,407
Net change in short-term borrowings	(126,000)	(101,300)
Proceeds from long-term debt	5,000	50,000
Repurchase of common stock	0	(21,607)
Share redemption for tax withholdings for restricted stock vesting	(107)	0
Proceeds from exercise of stock options	217	0
Common stock dividends paid	(7,191)	(1,953)
Net cash provided by financing activities	48,785	172,748
Net change in cash and cash equivalents	7,867	3,704
Cash and cash equivalents at beginning of period	30,496	33,298
Cash and cash equivalents at end of period	38,363	37,002
Supplementary information:
Interest paid	12,354	8,976
Income taxes paid, net of refunds	5,962	3,438
Other real estate owned acquired in settlement of loans	202	0
Common stock dividends declared	10,783	1,953
Residential Portfolio
Activity in securities held to maturity:
Proceeds from sales of portfolios	51,661	21,163
Home Equity Portfolio
Activity in securities held to maturity:
Proceeds from sales of portfolios	$ 12,100	$ 0

Basis of Presentation and Conso

Basis of Presentation and Consolidation	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Consolidation	BASIS OF PRESENTATION AND CONSOLIDATION Basis of Presentation The accompanying unaudited interim consolidated financial statements include the accounts of Blue Hills Bancorp, Inc. (the "Company"), its wholly-owned subsidiaries, Blue Hills Funding Corporation and Blue Hills Bank (the "Bank"), the principal operating entity, and the Bank's wholly-owned subsidiaries, B.H. Security Corporation, HP Security Corporation and 1196 Corporation, which are Massachusetts security corporations. All significant intercompany balances and transactions have been eliminated in consolidation. The unaudited consolidated financial statements of the Company presented herein have been prepared in accordance with U.S. Generally Accepted Accounting Principles (“GAAP”) for interim financial information and pursuant to the rules of the Securities and Exchange Commission ("SEC") for quarterly reports on Form 10-Q and Article 10 of Regulation S-X and do not include all of the information and note disclosures required by GAAP for a complete set of financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) and disclosures necessary for the fair presentation of the accompanying consolidated financial statements have been included. Interim results are not necessarily reflective of the results of the year. The accompanying unaudited financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto for the year ended December 31, 2016, included in the Company's annual report on Form 10-K. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet and reported amounts of revenues and expenses during the reporting period. Actual results could differ 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 and the valuation of deferred tax assets. Loan policies The Company has historically granted mortgage and consumer loans to its customers and a substantial portion of the loan portfolio consists of mortgage loans in communities including and near the locations of its banking offices. The ability of the Company’s debtors to honor their contracts is dependent upon the real estate and general economic conditions in these areas. The Company’s loan portfolio includes 1-4 family residential real estate, home equity, commercial real estate, construction, commercial business, and consumer segments. 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 the allowance for loan losses, charge-offs, deferred origination fees and costs, and discounts on purchased loans. Interest income is accrued on the unpaid principal balance. Deferred loan origination fees/costs and discounts on purchased loans are recognized as an adjustment of the related loan yield using the interest method. It is the policy of the Company to discontinue the accrual of interest on loans past due in excess of 90 days, unless the loan is well-secured and in the process of collection. Accrual may be discontinued sooner when in the judgment of management, the ultimate collectability of the principal or interest becomes doubtful. Upon discontinuance of accrual, all interest previously accrued is reversed against interest income. Past due status is based on contractual terms of the loan. The interest on non-accrual loans is accounted for on the cash-basis until qualifying for return to accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due have been current for six consecutive months and future payments are reasonably assured. Allowance for loan losses The allowance for loan losses is based on the size and the composition of the loan portfolio, delinquency levels, loss experience, economic conditions and other factors related to the collectability of the loan portfolio. Prior to the second quarter of 2016, for portfolios for which the Company had insufficient loss experience, losses from a national peer group of depository institutions with assets between one and five billion dollars for relevant portfolios dating back to 2009 were used. Commencing in the second quarter of 2016, the Company began to phase in its own loss history by loan type based upon the age and loss experience of the loan portfolio. While this change impacted the loss factors used for the majority of loan portfolios, there was no material impact to the amount of the allowance for loan losses. Loss experience is updated at least quarterly with consideration given to unique circumstances in the portfolio. Loan losses are charged against the allowance when management believes the uncollectability of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses is evaluated regularly by management and reflects consideration of all significant factors that affect the collectability of the loan portfolio. The evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available. It is the intention of management to maintain an allowance that is prudently commensurate with the growth in the loan portfolio. The allowance consists of general, allocated and unallocated components, as further described below. General component The general component of the allowance for loan losses is based on a combination of the Company's own history and an extrapolated historical loss experience based on FDIC data for depository institutions with assets of one billion to five billion dollars dating back to 2009, adjusted for qualitative and environmental factors including changes to lending policies and procedures, economic and business conditions, portfolio characteristics, staff experience, problem loan trends, collateral values, concentrations and the competitive, legal and regulatory environment. 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 - The Company does not generally originate loans with a loan-to-value ratio greater than 80 percent and does not generally grant loans that would be classified as subprime upon origination. When the Company does extend credit either on a first- or second-lien basis at a loan-to-value ratio greater than 80 percent , such loans are supported by either mortgage insurance or state guarantee programs. All loans in this segment are collateralized by owner-occupied, 1-4 family residential real estate and repayment is dependent on the credit quality of the individual borrower. The health of the national and state economy, including unemployment rates and housing prices, will have an effect on the credit quality of loans in this segment. Home equity - Loans in this segment are generally secured by first or second liens on residential real estate. Repayment is dependent on the credit quality of the individual borrower. The Company evaluates each loan application based on factors including the borrower’s credit score, income, length of employment, and other factors to establish the creditworthiness of the borrower. Commercial real estate - Loans in this segment include investment real estate and are generally secured by assignments of leases, real estate collateral and owner-occupied properties. In cases where there is a concentration of exposure to a single large tenant, underwriting standards include analysis of the tenant’s ability to support lease payments over the duration of the loan. The underlying cash flows generated by the properties may be adversely impacted by a downturn in the economy due to increased vacancy rates, which in turn, can have an effect on the credit quality in this segment. Payments on loans secured by income-producing properties often depend on the successful operation and management of the properties. Management continually monitors the cash flows of these loans. Construction - Loans in this segment primarily include real estate development loans for which payment is derived from permanent financing or sale of the property. Credit risk is affected by cost overruns, time to sell at an adequate price, and market conditions. Commercial business - Loans in this segment are generally secured by business assets, including accounts receivable, inventory, real estate and intangible assets. Strict underwriting standards include considerations of the borrower’s ability to support the debt service requirements from the underlying historical and projected cash flows of the business, collateral values, the borrower’s credit history and the ultimate collectability of the de bt. Economic conditions, real estate values, commodity prices, unemployment trends and other factors will affect the credit quality of loans in these segments. Consumer - Loans in this segment primarily include used classic and collector automobile loans. A significant portion of the used automobile loan portfolio is comprised of geographically diverse loans originated by and purchased from a third party, who also provides collection services and shares equally in any losses incurred. Allocated component The allocated component relates to loans that are considered impaired. Impairment is measured by either the present value of expected future cash flows discounted at the loan’s effective interest rate or the fair value of the collateral if the loan is collateral dependent. 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. 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. Management reviews all loan types for individual impairment. 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. 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 initially classified as impaired and generally remain impaired for the remaining life of the loan. The impaired classification may be removed if the borrower demonstrates compliance with the modified terms and the restructuring agreement specifies an interest rate equal to that which would be provided to a borrower with similar credit at the time of restructuring. Unallocated component The Company previously maintained an unallocated component to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflected the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating allocated and general reserves in the portfolio. As a large portion of the Company's loan portfolio is now seasoned, the unallocated component of the allowance for loan losses was eliminated during the fourth quarter of 2016. Change in accounting principle - Share-based compensation In March 2016, the Financial Accounting Standards Board ("FASB") issued an Accounting Standards Update ("ASU") 2016-09, Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. This Update amends its guidance on certain aspects of accounting for share-based payments to employees. The provisions of this Update became effective on January 1, 2017. The various changes applicable to adopting this Update include the following: Accounting for income taxes The Update states that entities will no longer record the excess tax benefits or deficiencies related to share-based compensation in additional paid in capital. Instead, they will record excess tax benefits or deficiencies in income tax expense or benefit in the income statement as part of the provision for income taxes on a prospective basis. For interim reporting purposes the excess tax benefits or deficiencies will be recorded as discrete items in the period in which they occur. The presentation of the excess tax benefits will be presented as an operating activity in the statement of cash flows. In addition, under the new guidance, when calculating incremental shares for earnings per share, entities exclude from assumed proceeds excess tax benefits that previously would have been recorded in additional paid in capital. The total income tax benefit recorded in the provision for income taxes relating to excess tax benefits on share-based compensation for the three and nine months ended September 30, 2017 was $0 and $41,000 , respectively. One of the previous requirements for an award to qualify for equity classification was that an entity could not partially settle the award for cash in excess of the employer’s minimum statutory withholding requirements. The determination of an employee's minimum statutory withholding amount has been difficult for some entities. Under this Update, the threshold to qualify for equity classification would permit withholding up to the maximum individual statutory tax rate in the applicable jurisdictions. Also, the Update provides that cash paid by an employer when directly withholding shares for tax-withholding purposes would be classified as a financing activity in the statement of cash flows. Accounting for forfeitures Under this Update, the Company has elected to account for forfeitures of share-based payments by recognizing forfeitures of awards as they occur (e.g., when an award does not vest because the employee leaves the Company or does not meet specific performance measures). The transition to this methodology is applied on a modified retrospective basis, whereby the compensation cost will be calculated as if the entity did not historically record a forfeiture estimate for outstanding awards and instead accounted for forfeitures of outstanding awards as the forfeitures occurred, with a cumulative-effect adjustment to retained earnings. The cumulative effect of changing to this methodology resulted in a $27,000 adjustment to beginning retained earnings in the consolidated statement of changes in stockholders' equity for the nine months ended September 30, 2017 .

Accounting Standards Updates

Accounting Standards Updates	9 Months Ended
	Sep. 30, 2017
Accounting Changes and Error Corrections [Abstract]
Accounting Standards Updates	ACCOUNTING STANDARDS UPDATES Recently Issued In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging:Targeted Improvements to Accounting for Hedging Activities . The purpose of this Update is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. This Update is effective for public business entities for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. The Company plans to adopt this Update on January 1, 2019. The Update requires a modified retrospective transition method in which the Company will recognize the cumulative effect of the change on the opening balance of each affected component of equity in the statement of financial position as of the date of adoption. While the Company continues to assess all potential impacts of the standard, we currently expect the adoption to have an immaterial impact on our consolidated financial statements. Future Application of Accounting Pronouncements Previously Issued In May 2017, the FASB issued ASU 2017-09, Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting which amends the scope of modification accounting for share-based payment arrangements. The Update provides guidance on the types of changes to the terms or conditions of share-based payment awards to which an entity would be required to apply modification accounting. Specifically, an entity would not apply modification accounting if the fair value, vesting conditions, and classification of the awards are the same immediately before and after the modification. The Update is effective for public business entities for annual periods being after December 15, 2017, including interim periods within those annual periods. Early adoption is permitted including adopting in any interim period. The Update should be applied prospectively to awards modified on or after the effective date. The impact to the consolidated financial statements upon adopting this Update is not expected to be material. In April 2017, the FASB issued ASU 2017-08 Receivables – Non-refundable Fees and Other Costs (Subtopic 310-20) , which shortens the period of amortization of the premium on certain callable debt securities to the earliest call date. Currently, generally accepted accounting principles (“GAAP”) excludes certain callable debt securities from consideration of early repayment of principal even if the holder is certain that the call will be exercised. The adoption this Update is not anticipated to impact the consolidated financial statements; as of September 30, 2017 , the Company has no callable debt securities. In January 2016, the FASB issued ASU 2016-01, Financial Instruments – Overall, (Subtopic 825-10) . The amendments in this Update address certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. Targeted improvements to generally accepted accounting principles include the requirement for 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 and the elimination of the requirement for public business entities to disclose the methods and significant assumptions used to estimate the fair value for financial instruments measured at amortized cost. For public business entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. While the Company has performed a preliminary evaluation of the provisions of the Update, the effect of the adoption will depend on the Company’s portfolio at the time of transition. The Company does not anticipate that adoption of the Update will materially impact the Company's financial position. The Update also requires Companies to utilize an "exit price" fair value methodology when measuring the fair value of financial instruments. The impact of the change, if applied, to the Company's equity investments for the nine months ended September 30, 2017 would have resulted in a gain of $1,896,000 (pre-tax) being recognized in net income, after reclassification for the realized loss on mutual funds, versus other comprehensive income. See the Consolidated Statements of Comprehensive Income. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . This Update is intended to improve financial reporting about leasing transactions and the key provision impacting the Company is the requirement for a lessee to record a right-to-use asset and a liability representing the obligation to make lease payments for long-term operating leases. Additionally, the Update includes additional quantitative and qualitative disclosures required by lessees and lessors to help users better understand the amount, timing, and uncertainty of cash flows arising from leases. This Update is effective for fiscal years beginning after December 31, 2018, and interim periods within those fiscal years. Lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients that entities may elect to apply as well as transition guidance specific to nonstandard leasing transactions. The Company is currently evaluating the provisions of the Update to determine the potential impact the new standard will have on the Company's consolidated financial statements. The Company's assets and liabilities will increase based on the present value of remaining lease payments for leases in place at the adoption date; however, this is not expected to be material to the Company's results of operations or financial position. Future lease commitments as of September 30, 2017 were $22.9 million . On June 16, 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which removes the thresholds that companies apply to measure credit losses on financial instruments measured at amortized cost, such as loans, receivables, and held-to-maturity debt securities. Under current U.S. GAAP, companies generally recognize credit losses when it is probable that the loss has been incurred. The revised guidance will remove previously established recognition thresholds based on probability, and will require companies to recognize an allowance for credit losses for the difference between the amortized cost basis of a financial instrument and the net amount that the company expects to collect over the instrument’s contractual life. ASU 2016-13 also amends the credit loss measurement guidance for available-for-sale debt securities and will require that credit losses be recorded through an allowance for credit losses. Additionally, this Update may reduce the carrying value of the Company's held-to-maturity investment securities as it will require an allowance on the expected losses over the life of these securities to be recorded upon adoption. The ASU is effective for public business entities fiscal years beginning after December 15, 2019 and for interim periods within those fiscal years. The Company is evaluating the provisions of the Update, and will closely monitor developments and additional guidance to determine the potential impact on the Company's consolidated financial statements. Management has established a steering committee which is in the process of identifying the methodologies and the additional data requirements necessary to implement the Update and has engaged a third-party software service provider to assist in the Company's implementation. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers . This Update provides a revenue recognition framework for any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of non-financial assets unless those contracts are within the scope of other accounting standards. This Update is effective for annual periods beginning after December 15, 2017, including interim periods within that reporting period with early adoption permitted. The timing of the Company’s revenue recognition is not expected to materially change. The Company's revenue relates principally to financial instruments, which are explicitly excluded from the scope of the new guidance. The Company will continue to evaluate any impact as additional guidance is issued and as our internal assessment progresses.

Securities

Securities	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Securities	SECURITIES The amortized cost and estimated fair value of securities available-for-sale and held-to-maturity, with gross unrealized gains and losses, follows: September 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Securities Available for Sale: Marketable equity securities $ 9,437 $ 855 $ (349 ) $ 9,943 Securities Held to Maturity: Debt securities: Government-sponsored enterprises $ 32,676 $ — $ (666 ) $ 32,010 Government-sponsored mortgage-backed and collateralized mortgage obligations 245,120 95 (1,592 ) 243,623 SBA asset-backed securities 25,037 — (221 ) 24,816 Total securities held to maturity $ 302,833 $ 95 $ (2,479 ) $ 300,449 December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Securities Available for Sale: Debt securities: Mortgage- and other asset-backed securities: Privately issued commercial mortgage-backed securities $ 10,530 $ — $ (41 ) $ 10,489 Other asset-backed securities 9,174 6 (195 ) 8,985 Total mortgage- and other asset-backed securities 19,704 6 (236 ) 19,474 Municipal bonds 12,730 120 (157 ) 12,693 Financial services: Banks 20,263 57 (298 ) 20,022 Diversified financials 17,198 190 (198 ) 17,190 Insurance and REITs 18,304 150 (216 ) 18,238 Total financial services 55,765 397 (712 ) 55,450 Other corporate: Industrials 49,217 508 (761 ) 48,964 Utilities 24,895 292 (100 ) 25,087 Total other corporate 74,112 800 (861 ) 74,051 Total debt securities 162,311 1,323 (1,966 ) 161,668 Marketable equity securities: Mutual funds: Domestic community 3,216 25 (19 ) 3,222 Global asset allocation 42,396 48 (2,498 ) 39,946 Total marketable equity securities 45,612 73 (2,517 ) 43,168 Total securities available for sale $ 207,923 $ 1,396 $ (4,483 ) $ 204,836 Securities Held to Maturity: Debt securities: Government-sponsored enterprises $ 32,667 $ 4 $ (934 ) $ 31,737 Government-sponsored mortgage-backed and collateralized mortgage obligations 153,938 14 (1,806 ) 152,146 SBA asset-backed securities 14,422 — (212 ) 14,210 Total securities held to maturity $ 201,027 $ 18 $ (2,952 ) $ 198,093 The amortized cost and estimated fair value of debt securities by contractual maturity at September 30, 2017 are included in the following table. Expected maturities will differ from contractual maturities because the issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Based on expected maturities, the mortgage and asset-backed securities and collateralized mortgage obligations, included below, have a 3.9 year weighted average duration. Held to Maturity Amortized Cost Fair Value (In thousands) Within 1 year $ 5,002 $ 5,001 After 1 year through 5 years 12,626 12,479 After 5 years through 10 years 15,048 14,530 32,676 32,010 Mortgage and asset-backed securities and collateralized mortgage obligations 270,157 268,439 $ 302,833 $ 300,449 For the three months ended September 30, 2017 , there were no proceeds from the sales of securities available for sale. For the three months ended September 30, 2016 , proceeds from sales of securities available for sale amounted to $18.8 million , gross realized gains amounted to $569,000 , and gross realized losses amounted to $7,000 . For the nine months ended September 30, 2017 and 2016 , proceeds from sales of securities available for sale amounted to $213.1 million and $79.0 million , respectively. Gross realized gains, for the same periods, amounted to $2.2 million and $1.9 million , respectively, and gross realized losses amounted to $2.3 million and $1.0 million , respectively. Information pertaining to securities with gross unrealized losses aggregated by investment category and length of time that individual securities have been in a continuous loss position, follows: September 30, 2017 Less Than Twelve Months More Than Twelve Months Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (In thousands) Securities Available for Sale: Temporarily impaired marketable equity securities $ (329 ) $ 4,431 $ (20 ) $ 446 Securities Held to Maturity: Debt securities: Government-sponsored enterprises $ (356 ) $ 19,226 $ (310 ) $ 12,684 Government-sponsored mortgage-backed and collateralized mortgage obligations (1,447 ) 212,536 (145 ) 9,724 SBA asset-backed securities (38 ) 15,115 (183 ) 9,701 Total temporarily impaired held-to-maturity securities $ (1,841 ) $ 246,877 $ (638 ) $ 32,109 The Company continually reviews securities for the existence of other-than-temporary impairment ("OTTI"), taking into consideration current market conditions, the extent and nature of changes in fair value, issuer rating changes and trends, the credit worthiness of the obligor of the security, volatility of earnings, current analysts’ evaluations, the Company’s intent to sell the security, or whether it is more likely than not that the Company will be required to sell the security before its anticipated recovery, as well as other qualitative factors. The term “other-than-temporary” is not intended to indicate that the decline is permanent, but indicates that the prospects for a near-term recovery of value is not necessarily favorable, or that there is a lack of evidence to support a realizable value equal to or greater than the carrying value of the investment. At September 30, 2017 , multiple debt securities have unrealized losses with aggregate depreciation of approximately 1.0% from the Company’s amortized cost basis. The unrealized losses were primarily caused by interest rate fluctuations. It is expected that none of these securities would be settled at a price less than the par value of the investment. Because the decline in fair value is attributable to changes in interest rates and not to credit quality and it is more likely than not that the Company will recover their amortized cost bases by maturity, the Company does not consider these securities to be other-than-temporarily impaired at September 30, 2017 . Management has the ability and intent to hold the securities until maturity. At September 30, 2017 , the Company had two marketable equity securities with unrealized losses of $349,000 , or 6.7% depreciation from the Company’s cost basis. No issues have been identified that cause management to believe the declines in fair value are other than temporary and the Company has the ability and intent to hold these investments until a recovery of fair value. December 31, 2016 Less Than Twelve Months More Than Twelve Months Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (In thousands) Securities Available for Sale: Debt securities: Mortgage- and other asset-backed securities: Privately issued commercial mortgage-backed securities $ (11 ) $ 3,163 $ (30 ) $ 7,326 Other asset-backed securities (43 ) 3,924 (152 ) 3,732 Total mortgage- and other asset-backed securities (54 ) 7,087 (182 ) 11,058 Municipal bonds (157 ) 5,301 — — Financial services: Banks (298 ) 14,553 — — Diversified financials (198 ) 9,369 — — Insurance and REITs (216 ) 6,900 — — Total financial services (712 ) 30,822 — — Other corporate: Industrials (655 ) 24,630 (106 ) 2,284 Utilities (99 ) 11,200 (1 ) 794 Total other corporate (754 ) 35,830 (107 ) 3,078 Total debt securities (1,677 ) 79,040 (289 ) 14,136 Marketable equity securities: Mutual funds: Domestic community — — (19 ) 448 Global asset allocation (424 ) 15,153 (2,074 ) 22,442 Total marketable equity securities (424 ) 15,153 (2,093 ) 22,890 Total temporarily impaired available for sale securities $ (2,101 ) $ 94,193 $ (2,382 ) $ 37,026 December 31, 2016 Less Than Twelve Months More Than Twelve Months Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (In thousands) Securities Held to Maturity: Debt securities: Government-sponsored enterprises $ (934 ) $ 28,533 $ — $ — Government-sponsored mortgage-backed and collateralized mortgage obligations (1,763 ) 146,098 (43 ) 3,827 SBA asset-backed securities (104 ) 9,157 (108 ) 5,053 Total temporarily impaired held-to-maturity securities $ (2,801 ) $ 183,788 $ (151 ) $ 8,880

Loans and The Allowance for Loa

Loans and The Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Loans and The Allowance for Loan Losses	LOANS AND THE ALLOWANCE FOR LOAN LOSSES A summary of the balances of loans follows: September 30, December 31, 2017 2016 (In thousands) Real estate: 1-4 family residential $ 902,151 $ 851,154 Home equity 77,149 78,719 Commercial real estate 751,524 687,289 Construction 89,214 76,351 1,820,038 1,693,513 Commercial business 241,301 206,234 Consumer 22,942 29,281 Total loans 2,084,281 1,929,028 Allowance for loan losses (20,248 ) (18,750 ) Discount and fair value adjustments on purchased loans (1,535 ) (1,846 ) Deferred loan costs and fees, net 4,789 4,439 Loans, net $ 2,067,287 $ 1,912,871 Activity in the allowance for loan losses for the three and nine months ended September 30, 2017 and 2016 , by loan segment, follows: 1-4 Family Home Commercial Construction Commercial Consumer Unallocated Total (In thousands) Three Months Ended September 30, 2017 Allowance at June 30, 2017 $ 4,973 $ 609 $ 8,987 $ 1,610 $ 3,352 $ 386 $ — $ 19,917 Provision (credit) for loan losses (3 ) 61 (153 ) 169 159 9 — 242 Loans charged-off — — — — — (36 ) — (36 ) Recoveries 125 — — — — — — 125 Allowance at September 30, 2017 $ 5,095 $ 670 $ 8,834 $ 1,779 $ 3,511 $ 359 $ — $ 20,248 Three Months Ended September 30, 2016 Allowance at June 30, 2016 $ 3,940 $ 539 $ 7,622 $ 1,747 $ 3,282 $ 496 $ 453 $ 18,079 Provision (credit) for loan losses 272 5 834 (568 ) 2,351 (13 ) (9 ) 2,872 Loans charged-off — — (321 ) — (2,985 ) (17 ) — (3,323 ) Recoveries 100 — — — 2 — — 102 Allowance at September 30, 2016 $ 4,312 $ 544 $ 8,135 $ 1,179 $ 2,650 $ 466 $ 444 $ 17,730 1-4 Family Residential Home Equity Commercial Real Estate Construction Commercial Business Consumer Unallocated Total (In thousands) Nine Months Ended September 30, 2017 Allowance at December 31, 2016 $ 4,846 $ 537 $ 8,374 $ 1,353 $ 3,206 $ 434 $ — $ 18,750 Provision for loan losses 102 133 460 426 296 — — 1,417 Loans charged-off (52 ) — — — — (75 ) — (127 ) Recoveries 199 — — — 9 — — 208 Allowance at September 30, 2017 $ 5,095 $ 670 $ 8,834 $ 1,779 $ 3,511 $ 359 $ — $ 20,248 Nine Months Ended September 30, 2016 Allowance at December 31, 2015 $ 3,916 $ 636 $ 7,147 $ 1,364 $ 2,839 $ 772 $ 428 $ 17,102 Provision (credit) for loan losses 296 (92 ) 1,309 (185 ) 2,874 (260 ) 16 3,958 Loans charged-off — — (321 ) — (3,098 ) (46 ) — (3,465 ) Recoveries 100 — — — 35 — — 135 Allowance at September 30, 2016 $ 4,312 $ 544 $ 8,135 $ 1,179 $ 2,650 $ 466 $ 444 $ 17,730 Additional information pertaining to the allowance for loan losses at September 30, 2017 and December 31, 2016 is as follows: 1-4 Family Home Commercial Construction Commercial Consumer Unallocated Total (In thousands) September 30, 2017 Allowance related to impaired loans $ 115 $ — $ — $ — $ — $ 1 $ — $ 116 Allowance related to non-impaired loans 4,980 670 8,834 1,779 3,511 358 — 20,132 Total allowance for loan losses $ 5,095 $ 670 $ 8,834 $ 1,779 $ 3,511 $ 359 $ — $ 20,248 Impaired loans $ 5,805 $ 1,195 $ 4,842 $ — $ — $ 262 $ — $ 12,104 Non-impaired loans 896,346 75,954 746,682 89,214 241,301 22,680 — 2,072,177 Total loans $ 902,151 $ 77,149 $ 751,524 $ 89,214 $ 241,301 $ 22,942 $ — $ 2,084,281 December 31, 2016 Allowance related to impaired loans $ 17 $ — $ — $ — $ — $ — $ — $ 17 Allowance related to non-impaired loans 4,829 537 8,374 1,353 3,206 434 — 18,733 Total allowance for loan losses $ 4,846 $ 537 $ 8,374 $ 1,353 $ 3,206 $ 434 $ — $ 18,750 Impaired loans $ 6,726 $ 1,153 $ 941 $ — $ 241 $ 170 $ — $ 9,231 Non-impaired loans 844,428 77,566 686,348 76,351 205,993 29,111 — 1,919,797 Total loans $ 851,154 $ 78,719 $ 687,289 $ 76,351 $ 206,234 $ 29,281 $ — $ 1,929,028 The following is a summary of past due and non-accrual loans, by loan class, at September 30, 2017 and December 31, 2016 : 30-59 Days Past Due 60-89 Days Past Due Past Due 90 Days or More Total Past Due Loans on Non-accrual (In thousands) September 30, 2017 Real estate: 1-4 family residential $ 1,134 $ 1,005 $ 2,224 $ 4,363 $ 5,039 Home equity 847 438 788 2,073 1,195 Commercial real estate — — 3,966 3,966 4,842 Consumer 111 12 133 256 262 Total $ 2,092 $ 1,455 $ 7,111 $ 10,658 $ 11,338 December 31, 2016 Real estate: 1-4 family residential $ 584 $ 373 $ 2,322 $ 3,279 $ 6,478 Home equity 452 496 775 1,723 1,153 Commercial real estate 1,393 — — 1,393 941 Commercial business 4,996 13 — 5,009 241 Consumer 175 5 7 187 170 Total $ 7,600 $ 887 $ 3,104 $ 11,591 $ 8,983 There were no loans past due 90 days or more and still accruing interest at September 30, 2017 and December 31, 2016 . The following is a summary of information pertaining to impaired loans by loan class at the dates indicated: Recorded Investment Unpaid Principal Balance Related Allowance September 30, 2017 (In thousands) Impaired loans without a valuation allowance: Real estate: 1-4 family residential $ 4,608 $ 5,004 $ — Home equity 1,195 1,305 — Commercial real estate 4,842 5,217 — Commercial business — 114 — Consumer 248 256 — Total 10,893 11,896 — Impaired loans with a valuation allowance: 1-4 family residential 1,197 1,197 115 Consumer 14 14 1 Total 1,211 1,211 116 Total impaired loans $ 12,104 $ 13,107 $ 116 December 31, 2016 Impaired loans without a valuation allowance: Real estate: 1-4 family residential $ 6,605 $ 7,023 $ — Home equity 1,153 1,225 — Commercial real estate 941 1,207 — Commercial business 241 3,279 — Consumer 170 183 — Total 9,110 12,917 — Impaired loans with a valuation allowance: 1-4 family residential 121 313 17 Total impaired loans $ 9,231 $ 13,230 $ 17 The following tables set forth information regarding average balances and interest income recognized (the majority of which is on a cash basis) on impaired loans by class, for the periods indicated: Average Recorded Investment Interest Income Recognized Three Months Ended September 30, 2017 (In thousands) Real estate: 1-4 family residential $ 6,041 $ 60 Home equity 1,198 6 Commercial real estate 4,933 172 Commercial 89 — Consumer 340 2 Total $ 12,601 $ 240 Three Months Ended September 30, 2016 Real estate: 1-4 family residential $ 6,445 $ 186 Home equity 520 5 Commercial real estate 3,037 41 Commercial 1,538 6 Consumer 136 2 Total $ 11,676 $ 240 Nine Months Ended September 30, 2017 Real estate: 1-4 family residential $ 6,330 $ 220 Home equity 1,234 35 Commercial real estate 3,970 207 Consumer 161 5 Commercial 251 7 Total $ 11,946 $ 474 Nine Months Ended September 30, 2016 Real estate: 1-4 family residential $ 6,383 $ 331 Home equity 405 13 Commercial real estate 3,755 135 Commercial 771 36 Consumer 156 6 Total $ 11,470 $ 521 No additional funds are committed to be advanced in connection with impaired loans. There were no material troubled debt restructurings recorded during the three and nine months ended September 30, 2017 or 2016 . Credit Quality Information The Company utilizes a ten-grade internal loan rating system for all loans as follows: Loans rated 1 – 6 are considered “acceptable” rated loans that are performing as agreed, and generally require only routine supervision. Loans rated 7 are considered “special mention.” These loans are starting to show signs of potential weakness and are being closely monitored by management. Loans rated 8 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. Generally, all loans 90 days delinquent are rated 8. Loans rated 9 are considered “doubtful.” Serious problems exist to the point where a partial loss of principal is likely. Weakness is so pronounced that on the basis of current information, conditions and values, collection in full is highly improbable. Loans rated 10 are considered "loss" and the credit extended to the customer is considered uncollectible or of such little value that it does not warrant consideration as an active asset. The Company assigns a 6 risk-rating to otherwise performing, satisfactorily collateralized Consumer and Residential loans where the Bank becomes aware of deterioration in a FICO score or other indication of potential inability to service the debt. The Company assigns risk ratings of 7-10 to residential or consumer loans that have a well-defined weakness that may jeopardize the collection of the contractual principal and interest, are contractually past due 90 days or more or legal action has commenced against the borrower. All other residential mortgage and consumer loans have no risk rating. On an annual basis, or more often if needed, the Company formally reviews the ratings on all commercial and commercial construction loans. At least annually, the Company engages an independent third party to review a significant portion of loans within these segments. Management uses the results of these reviews as part of its annual review process. In addition, management utilizes delinquency reports, the watch list and other loan reports to monitor credit quality of other loan segments. The following tables present the Company’s loans by risk rating at September 30, 2017 and December 31, 2016 : 1-4 Family Residential Home Equity Commercial Real Estate Construction Commercial Business Consumer Total Loans (In thousands) September 30, 2017 Loans rated 1 - 6 $ 1,029 $ 276 $ 742,805 $ 89,214 $ 239,870 $ 4 $ 1,073,198 Loans rated 7 3,041 1,305 3,502 — 1,423 270 9,541 Loans rated 8 2,383 — 5,217 — 8 — 7,608 Loans rated 9 252 — — — — — 252 Loans rated 10 — — — — — — — Loans not rated 895,446 75,568 — — — 22,668 993,682 $ 902,151 $ 77,149 $ 751,524 $ 89,214 $ 241,301 $ 22,942 $ 2,084,281 December 31, 2016 Loans rated 1 - 6 $ 1,054 $ 293 $ 671,872 $ 76,351 $ 188,706 $ 4 $ 938,280 Loans rated 7 3,514 967 9,720 — 17,510 146 31,857 Loans rated 8 2,442 258 5,697 — 18 37 8,452 Loans rated 9 645 — — — — — 645 Loans rated 10 — — — — — — — Loans not rated 843,499 77,201 — — — 29,094 949,794 $ 851,154 $ 78,719 $ 687,289 $ 76,351 $ 206,234 $ 29,281 $ 1,929,028

Derivatives

Derivatives	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	DERIVATIVES Interest Rate Swap Agreements The Company is party to derivative financial instruments in the normal course of business to manage exposure to fluctuations in interest rates and to meet the needs of commercial customers. These financial instruments have been generally limited to loan level interest rate swap agreements, which are entered into with counterparties that meet established credit standards. These transactions involve both credit and market risk. The notional amounts are amounts on which calculations, payments, and the value of the derivatives are based. Notional amounts do not represent direct credit exposures. The fair value of the derivative instruments is reflected on the Company’s consolidated balance sheet as other assets or accrued expenses and other liabilities as appropriate. Changes in the fair value of these agreements are recorded in miscellaneous income in the consolidated statements of net income. The table below presents information about derivative financial instruments not designated as hedging instruments at September 30, 2017 and December 31, 2016 . Derivative Gains Derivative Losses Notional Amount Fair Value Notional Amount Fair Value (In thousands) September 30, 2017 Economic hedges: Commercial loan level interest rate swap agreements $ 503,723 $ 9,259 $ 503,723 $ 9,259 Other contracts 27,858 33 42,522 39 Total derivatives $ 531,581 $ 9,292 $ 546,245 $ 9,298 December 31, 2016 Economic hedges: Commercial loan level interest rate swap agreements $ 419,488 $ 9,016 $ 419,488 $ 8,932 Other contracts 15,685 8 33,045 56 Total derivatives $ 435,173 $ 9,024 $ 452,533 $ 8,988 The Company is exposed to credit-related losses in the event of nonperformance by the counterparties to these agreements. The Company controls the credit risk of its financial contracts through credit approvals, limits and monitoring procedures, and does not expect any counterparties to fail their obligations. The Company has minimum collateral posting thresholds with certain of its interest rate swap derivative counterparties. Other contracts represent risk participation agreements on commercial loan level interest rate swap agreements. The Company has entered into risk participation agreements with the correspondent institutions to share in any interest rate swap gains or losses incurred as a result of the commercial loan customers’ termination of a loan level interest rate swap agreement prior to maturity. The Company records these risk participation agreements at fair value. Mortgage Banking Derivatives The Company enters into commitments to fund residential mortgage loans at specified rates and times in the future, with the intention that loans will subsequently be sold in the secondary market. Mortgage loan commitments are referred to as derivative loan commitments if the loan that will result from exercise of the commitment will be held for sale upon funding. These commitments are recognized at fair value on the consolidated balance sheet in other assets and other liabilities with changes in their fair values recorded in non-interest income. Outstanding loan commitments expose the Company to the risk that the price of the loans arising from exercise of the loan commitment might change from inception of the rate lock to funding of the loan due to changes in mortgage interest rates. If interest rates increase, the value of these loan commitments decreases. Conversely, if interest rates decrease, the value of these loan commitments increases. To protect against the price risk inherent in derivative loan commitments, the Company utilizes “best efforts” forward loan sale commitments to mitigate the risk of potential decreases in the values of loans that would result from the exercise of the derivative loan commitments. With a “best efforts” contract, the Company commits to deliver an individual mortgage loan of a specified principal amount and quality to an investor if the loan to the underlying borrower closes. Generally, the price the investor will pay the seller for an individual loan is specified prior to the loan being funded (e.g., on the same day the lender commits to lend funds to a potential borrower). The Company expects that these forward sale commitments will experience changes in fair value opposite to the change in fair value of derivative loan commitments. The notional amount of forward loan sale commitments was $43.2 million at September 30, 2017 and $9.5 million at December 31, 2016 , respectively. At September 30, 2017 and December 31, 2016 , the Company had outstanding rate-lock agreements for loans to be originated for sale amounting to $31.0 million and $6.8 million , respectively. The gain or loss on any derivative instrument not designated as a hedge (such as these mortgage banking activities) is recognized in earnings. The fair value of such commitments as of September 30, 2017 and December 31, 2016 are outlined below: Assets Liabilities Balance Sheet Location Fair Value Balance Sheet Location Fair Value (In thousands) September 30, 2017 Mortgage loan commitments Other Assets $ 334 Other Liabilities $ 10 Forward loan sale commitments Other Assets 20 Other Liabilities 77 Total $ 354 $ 87 December 31, 2016 Mortgage loan commitments Other Assets $ 111 Other Liabilities $ 3 Forward loan sale commitments Other Assets 15 Other Liabilities 74 Total $ 126 $ 77

Deposits

Deposits	9 Months Ended
	Sep. 30, 2017
Banking and Thrift [Abstract]
Deposits	DEPOSITS A summary of deposit balances, by type, is as follows: September 30, December 31, 2017 2016 (In thousands) NOW and demand $ 376,864 $ 331,508 Regular savings 244,662 262,984 Money market 666,388 573,204 Brokered money market 41,768 53,357 Total non-certificate accounts 1,329,682 1,221,053 Term certificates of $250,000 or more 119,573 77,550 Term certificates less than $250,000 301,192 262,564 Brokered term certificates 235,106 247,520 Total term certificate accounts 655,871 587,634 Total deposits $ 1,985,553 $ 1,808,687 At September 30, 2017 , the scheduled maturities of term certificate accounts, including brokered deposits, are as follows: Amount Weighted Average Rate (Dollars in thousands) Within 1 year $ 379,841 1.09 % 1-2 years 141,883 1.60 2-3 years 84,081 1.83 3-4 years 21,821 1.86 4 years and beyond 28,245 2.04 $ 655,871 1.36 %

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS Determination of fair value The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value is best determined based upon quoted market prices. However, in many instances, there are no quoted market prices for the Company’s various assets and liabilities. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. Accordingly, the fair value estimates may not be realized in an immediate settlement of the asset or liability. The following methods and assumptions were used by the Company in estimating fair value disclosures for financial instruments: Cash and cash equivalents : The carrying amounts of cash and due from banks and short-term investments approximate fair value. Securities : All fair value measurements are obtained from a third-party pricing service and are not adjusted by management. The securities measured at fair value in Level 1 are based on quoted market prices in an active exchange market. These securities include U.S. Treasury securities and marketable equity securities. All other securities are measured at fair value in Level 2 based on pricing models that consider standard input factors such as observable market data, benchmark yields, interest rate volatilities, broker/dealer quotes, credit spreads and new issue data. Federal Home Loan Bank stock : The carrying value of Federal Home Loan Bank stock approximates fair value based on the redemption provisions of the Federal Home Loan Bank. Loans : Fair values are estimated using discounted cash flow analyses, using market interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. Fair values for non-performing loans are estimated using discounted cash flow analyses or underlying collateral values, where applicable. Loans held for sale : Fair values are based on commitments in effect from investors or prevailing market prices. Accrued interest receivable : The carrying amount of accrued interest receivable approximates fair value. Deposits : The fair values for non-certificate accounts are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts). Fair values for certificate accounts are estimated using a discounted cash flow calculation that applies market interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits. Borrowings : The fair value of borrowings are estimated using discounted cash flow analyses based on the current incremental borrowing rates in the market for similar types of borrowing arrangements. Interest rate swap agreements : The fair values of interest rate swap agreements are based on a valuation model that uses primarily observable inputs, such as benchmark yield curves and interest rates and also include the value associated with counterparty credit risk. Credit risk adjustments consider factors such as the likelihood of default by the Company and its counterparties, its net exposures and remaining contractual life. To date, the Company has not realized any losses due to a counterparty's inability to pay any net uncollateralized position. Forward loan sale commitments and derivative loan commitments : Fair values of forward loan sale commitments and derivative loan commitments are based on changes in the fair values of the underlying mortgage loans from inception and, for derivative loan commitments, fair values also include the value of servicing, deferred origination fees/costs and the probability of such commitments being exercised. Significant management judgment and estimation is required in determining these fair value measurements. Off-balance sheet instruments : Fair values for off-balance sheet lending commitments are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing. The estimated fair value of off-balance sheet financial instruments at September 30, 2017 and December 31, 2016 , was immaterial since fees charged are not material. Assets and liabilities measured at fair value on a recurring basis Assets and liabilities measured at fair value on a recurring basis are summarized below: Level 1 Level 2 Level 3 Total Fair Value (In thousands) September 30, 2017 Assets Available-for-sale marketable equity securities $ 9,943 $ — $ — $ 9,943 Derivative assets: Interest rate swap agreements — 9,292 — 9,292 Forward loan sale commitments — — 20 20 Mortgage loan commitments — — 334 334 Total assets $ 9,943 $ 9,292 $ 354 $ 19,589 Liabilities Derivative liabilities: Interest rate swap agreements $ — $ 9,298 $ — $ 9,298 Forward loan sale commitments — — 77 77 Mortgage loan commitments — — 10 10 Total liabilities $ — $ 9,298 $ 87 $ 9,385 December 31, 2016 Assets Securities available for sale: Debt securities $ — $ 161,668 $ — $ 161,668 Marketable equity securities 43,168 — — 43,168 Derivative assets: Interest rate swap agreements — 9,024 — 9,024 Forward loan sale commitments — — 15 15 Mortgage loan commitments — — 111 111 Total assets $ 43,168 $ 170,692 $ 126 $ 213,986 Liabilities Derivative liabilities: Interest rate swap agreements $ — $ 8,988 $ — $ 8,988 Forward loan sale commitments — — 74 74 Mortgage loan commitments — — 3 3 Total liabilities $ — $ 8,988 $ 77 $ 9,065 Assets measured at fair value on a non-recurring basis The Company may also be required, from time to time, to measure certain assets at fair value on a non-recurring basis in accordance with generally accepted accounting principles. These adjustments to fair value usually result from application of lower-of-cost-or-market accounting or write-downs of individual assets. There are no liabilities measured at fair value on a non-recurring basis. The following table summarizes the fair value hierarchy applicable to assets measured at fair value on a non-recurring basis: September 30, 2017 December 31, 2016 Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 (In thousands) Impaired loans $ — $ — $ 1,365 $ — $ — $ 136 The following table summarizes the total gains (losses) on assets measured at fair value on a non-recurring basis for the three and nine months ended September 30, 2017 and 2016 . Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (In thousands) Impaired loans $ 11 $ (2,690 ) $ 2 $ (2,997 ) Gains and losses applicable to impaired loans are based on the appraised value of the underlying collateral, discounted as necessary due to management’s estimates of changes in market conditions. The gains and losses applicable to impaired loans are not recorded as a direct adjustment to current earnings or comprehensive income, but rather as a component in determining the overall adequacy of the allowance for loan losses. Adjustments to the estimated fair value of impaired loans may result in increases or decreases to the provision for loan losses. Summary of fair values of financial instruments The estimated fair values, and related carrying amounts, of the Company’s financial instruments are as follows. Certain financial instruments and all nonfinancial instruments are exempt from disclosure requirements. Accordingly, the aggregate fair value amounts presented herein do not represent the underlying fair value of the Company. Carrying Amount Fair Value Level 1 Level 2 Level 3 Total (In thousands) September 30, 2017 Financial assets: Cash and cash equivalents $ 38,363 $ 38,363 $ — $ — $ 38,363 Securities available for sale 9,943 9,943 — — 9,943 Securities held to maturity 302,833 — 300,449 — 300,449 Federal Home Loan Bank stock 9,410 — — 9,410 9,410 Loans and loans held for sale 2,079,555 — — 2,064,348 2,064,348 Accrued interest receivable 5,802 — — 5,802 5,802 Financial liabilities: Deposits 1,985,553 — — 1,985,561 1,985,561 Borrowings 130,000 — 128,837 — 128,837 On-balance sheet derivative financial instruments: Derivative assets: Interest rate swap agreements 9,292 — 9,292 — 9,292 Forward loan sale commitments 20 — — 20 20 Mortgage loan commitments 334 — — 334 334 Derivative liabilities: Interest rate swap agreements 9,298 — 9,298 — 9,298 Forward loan sale commitments 77 — — 77 77 Mortgage loan commitments 10 — — 10 10 Carrying Amount Fair Value Level 1 Level 2 Level 3 Total (In thousands) December 31, 2016 Financial assets: Cash and cash equivalents $ 30,496 $ 30,496 $ — $ — $ 30,496 Securities available for sale 204,836 43,168 161,668 — 204,836 Securities held to maturity 201,027 — 198,093 — 198,093 Federal Home Loan Bank stock 13,352 — — 13,352 13,352 Loans and loans held for sale 1,915,632 — — 1,903,978 1,903,978 Accrued interest receivable 6,057 — — 6,057 6,057 Financial liabilities: Deposits 1,808,687 — — 1,808,629 1,808,629 Borrowings 251,000 — 250,648 — 250,648 On-balance sheet derivative financial instruments: Derivative assets: Interest rate swap agreements 9,024 — 9,024 — 9,024 Forward loan sale commitments 15 — — 15 15 Mortgage loan commitments 111 — — 111 111 Derivative liabilities: Interest rate swap agreements 8,988 — 8,988 — 8,988 Forward loan sale commitments 74 — — 74 74 Mortgage loan commitments 3 — — 3 3

Comprehensive Income

Comprehensive Income	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Comprehensive Income	COMPREHENSIVE INCOME Accounting principles generally require that recognized revenues, expenses, gains and losses be included in net income. Although certain changes in assets and liabilities are reported as a separate component of stockholders' equity on the consolidated balance sheets, such items, along with net income, are components of comprehensive income. The components of accumulated other comprehensive loss, included in stockholders' equity, are as follows: September 30, December 31, 2017 2016 (In thousands) Securities available for sale: Net unrealized gain (loss) $ 506 $ (3,087 ) Tax effect (223 ) 1,007 Net-of-tax amount 283 (2,080 ) Securities held to maturity: Net unrealized gain on transferred securities 270 337 Tax effect (101 ) (114 ) Net-of-tax amount 169 223 Defined benefit pension plan: Unrecognized net actuarial loss (3,215 ) (3,482 ) Tax effect 1,149 1,270 Net-of-tax amount (2,066 ) (2,212 ) $ (1,614 ) $ (4,069 )

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Stockholders' Equity	STOCKHOLDERS' EQUITY Minimum regulatory capital requirements The Company (on a consolidated basis) 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 the Company’s and the Bank’s consolidated 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 capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Prompt corrective action provisions are not applicable to bank holding companies. Federal banking regulations include minimum capital ratios as displayed in the following table. Additionally, community banking 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 bonuses. The capital conservation buffer is being phased in over multiple years, with an initial phase-in of 0.625% . Beginning on January 1, 2017, the capital conservation buffer is 1.250% . Also, certain deductions from and adjustments to regulatory capital are being phased in over several years. Management believes that the Company will remain characterized as “well capitalized” throughout the phase-in periods. The application of the capital conservation buffer resulted in no limitations to payout of retained earnings as of September 30, 2017 . As of September 30, 2017 , the most recent notification from the Federal Deposit Insurance Corporation categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, an institution must maintain minimum ratios as set forth in the following tables. There are no conditions or events since the notification that management believes have changed the Bank's category. 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 Company's and the Bank's actual capital amounts and ratios as of September 30, 2017 and December 31, 2016 are also presented in the following table. Actual Minimum Capital Requirement Minimum To Be Well Capitalized Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Blue Hills Bancorp, Inc.: September 30, 2017 Total capital (to risk weighted assets) $ 410,703 20.6 % $ 159,395 8.0 % $ 199,244 10.0 % Tier 1 capital (to risk weighted assets) 390,455 19.6 119,546 6.0 159,395 8.0 Common equity Tier 1 (to risk weighted assets) 390,455 19.6 89,660 4.5 129,509 6.5 Tier 1 capital (to average assets) 390,455 15.5 100,834 4.0 126,043 5.0 December 31, 2016 Total capital (to risk weighted assets) $ 395,325 20.5 % $ 154,471 8.0 % $ 193,089 10.0 % Tier 1 capital (to risk weighted assets) 376,575 19.5 115,854 6.0 154,471 8.0 Common equity Tier 1 (to risk weighted assets) 376,575 19.5 86,890 4.5 125,508 6.5 Tier 1 capital (to average assets) 376,575 16.0 94,166 4.0 117,708 5.0 Blue Hills Bank: September 30, 2017 Total capital (to risk weighted assets) $ 338,168 17.0 % $ 159,135 8.0 % $ 198,918 10.0 % Tier 1 capital (to risk weighted assets) 317,920 16.0 119,351 6.0 159,135 8.0 Common equity Tier 1 (to risk weighted assets) 317,920 16.0 89,513 4.5 129,297 6.5 Tier 1 capital (to average assets) 317,920 12.6 100,601 4.0 125,752 5.0 December 31, 2016 Total capital (to risk weighted assets) $ 313,457 16.3 % $ 154,196 8.0 % $ 192,745 10.0 % Tier 1 capital (to risk weighted assets) 294,707 15.3 115,647 6.0 154,196 8.0 Common equity Tier 1 (to risk weighted assets) 294,707 15.3 86,735 4.5 125,284 6.5 Tier 1 capital (to average assets) 294,707 12.5 94,099 4.0 117,623 5.0

Employee Stock Ownership Plan

Employee Stock Ownership Plan	9 Months Ended
	Sep. 30, 2017
Retirement Benefits [Abstract]
Employee Stock Ownership Plan	EMPLOYEE STOCK OWNERSHIP PLAN The Company maintains an Employee Stock Ownership Plan (“ESOP”) to provide eligible employees the opportunity to own Company stock. This plan is a tax-qualified retirement plan for the benefit of Company employees. Contributions are allocated to eligible participants on the basis of compensation, subject to federal tax limits. The number of shares committed to be released per year is 75,912 through 2043. Shares held by the ESOP include the following: September 30, 2017 December 31, 2016 Allocated 219,862 149,613 Committed to be allocated 56,778 75,912 Unallocated 1,992,830 2,049,608 2,269,470 2,275,133 The fair value of unallocated shares was $38.3 million and $38.4 million at September 30, 2017 and December 31, 2016 , respectively. Total compensation expense recognized in connection with the ESOP for the three months ended September 30, 2017 and 2016 was $357,000 and $277,000 , respectively. Total compensation expense recognized in connection with the ESOP for the nine months ended September 30, 2017 and 2016 was $1,041,000 and $818,000 , respectively.

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Earnings Per Common Share	EARNINGS PER COMMON SHARE Basic earnings per common share represents income available to common stockholders divided by the weighted-average number of common shares outstanding during the period. Unallocated ESOP shares are not deemed outstanding for earnings per share calculations. Three Months Ended September 30, 2017 2016 (In thousands, except share amounts) Net income applicable to common stock $ 3,841 $ 1,630 Average number of common shares outstanding 26,865,148 27,212,837 Less: Average unallocated ESOP shares (2,002,397 ) (2,078,100 ) Less: Average unvested restricted stock awards (889,635 ) (1,005,225 ) Average number of common shares outstanding used to calculate basic earnings per common share 23,973,116 24,129,512 Effect of dilutive stock options 240,806 — Effect of dilutive unvested restricted stock awards 296,170 178,028 Average number of common shares outstanding used to calculate diluted earnings per common share 24,510,092 24,307,540 Earnings per common share: Basic $ 0.16 $ 0.07 Diluted $ 0.16 $ 0.07 Nine Months Ended September 30, 2017 2016 (In thousands, except share amounts) Net income applicable to common stock $ 15,196 $ 4,655 Average number of common shares outstanding 26,855,598 27,682,795 Less: Average unallocated ESOP shares (2,021,219 ) (2,096,690 ) Less: Average unvested restricted stock awards (888,494 ) (1,000,535 ) Average number of common shares outstanding used to calculate basic earnings per common share 23,945,885 24,585,570 Effect of dilutive stock options 178,712 — Effect of dilutive unvested restricted stock awards 253,065 122,989 Average number of common shares outstanding used to calculate diluted earnings per common share 24,377,662 24,708,559 Earnings per common share: Basic $ 0.63 $ 0.19 Diluted $ 0.62 $ 0.19 Options for 407,950 and 2,461,350 shares were not included in the computation of diluted earnings per common share for the three and nine months ended September 30, 2017 and 2016 , respectively, because to do so would have been anti-dilutive.

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	SHARE-BASED COMPENSATION Under the Blue Hills Bancorp, Inc. 2015 Equity Incentive Plan (the "Equity Plan"), the Company may grant options, restricted stock, restricted units or performance awards to its directors, officers and employees. Both incentive stock options and non-qualified stock options may be granted under the Equity Plan, with the total shares reserved for options equaling 2,846,681 . Board members may only receive non-qualified stock options. The exercise price of each option equals the market price of the Company’s stock on the date of grant and the maximum term of each option is ten years. The total number of shares reserved for restricted stock or restricted units is 1,138,673 . The vast majority of options and awards vest ratably over five years. The fair value of shares awarded is based on the market price at the date of grant. Expense related to options and restricted stock granted to directors is recognized as directors' fees within noninterest expense. The Company has standard form agreements used for stock option and restricted stock awards. The standard form agreements used for the Chief Executive Officer and all other Executive Officers have previously been disclosed in Securities and Exchange Commission filings and generally provide that: (1) any unvested options or unvested restricted stock vest upon a Change in Control; and, that (2) any stock options which vest pursuant to a Change in Control, which is an event described in Section 280G of the Internal Revenue Code of 1986, will be cashed out at the difference between the acquisition price and the exercise price of the stock option. Stock Options The fair value of each option grant is estimated on the date of the grant using the Black-Scholes option-pricing model with the following assumptions: • Volatility is based on peer group volatility because the Company does not have a sufficient trading history. • Expected life represents the period of time that the option is expected to be outstanding, taking into account the contractual term, and the vesting period. • Expected dividend yield is based on the Company's history and expectation of dividend payouts. • The risk-free rate is based on the U.S. Treasury yield curve in effect at the time of grant for a period equivalent to the expected life of the option. The Company made the following awards of options to purchase shares of common stock during the nine months ended September 30, 2017 . Options granted 412,100 Vesting period (years) 5 Term (years) 10 Expected volatility 26.91%-27.43% Expected life (years) 6.5 Expected dividend yield 0.71%-2.22% Risk free interest rate 1.87%-2.16% Fair value per option $4.07-$5.31 A summary of the status of the Company's stock option grants for the nine months ended September 30, 2017 , is presented in the table below: Stock Option Awards Weighted Average Exercise Price Weighted Average Remaining Contractual Term (years) Aggregate Intrinsic Value Outstanding at December 31, 2016 2,449,670 $ 14.06 — $ — Granted 412,100 18.22 — — Forfeited (156,650 ) 14.18 — — Exercised (15,660 ) 13.88 — 65,000 Outstanding at September 30, 2017 2,689,460 $ 14.70 8.24 $ 12,115,000 Exercisable at September 30, 2017 491,230 $ 14.07 8.02 $ 2,520,000 Unrecognized compensation cost inclusive of directors' options at September 30, 2017 $ 7,542,000 Weighted average remaining recognition period (years) 3.36 For the three months ended September 30, 2017 and 2016 , share-based compensation expense applicable to the stock options was $574,000 and $ 513,000 , respectively, and the recognized tax benefit related to this expense was $136,000 and $126,000 , respectively. For the nine months ended September 30, 2017 and 2016 , share-based compensation expense applicable to the stock options was $1,752,000 and $1,509,000 , respectively, and the recognized tax benefit related to this expense was $426,000 and $376,000 , respectively. Restricted Stock Shares issued upon vesting may be either authorized but unissued shares or reacquired shares held by the Company. Any shares not issued because vesting requirements are not met will again be available for issuance under the plan. The fair market value of shares awarded, based on the market price at the date of grant, is recorded as unearned compensation and amortized over the applicable vesting period. Of the restricted shares granted, 40,000 are performance based, of which 6,000 have vested, and 32,000 remain unvested. There were 2,000 performance shares forfeited during the nine months ended September 30, 2017 . The following table presents the activity in non-vested stock awards under the Equity Plan for the nine months ended September 30, 2017 : Outstanding Restricted Stock Awards Weighted Average Grant Price Nonvested stock awards at December 31, 2016 816,070 $ 14.06 Granted 184,695 18.25 Vested (21,873 ) 14.00 Forfeited (85,317 ) 14.11 Nonvested stock awards at September 30, 2017 893,575 $ 14.92 Unrecognized compensation cost inclusive of directors' awards at September 30, 2017 $10,498,000 Weighted average remaining recognition period (years) 3.42 For the three months ended September 30, 2017 and 2016 , share-based compensation expense applicable to restricted stock awards was $ 789,000 and $712,000 , respectively, and the recognized tax benefit related to this expense was $277,000 and $249,000 , respectively. For the nine months ended September 30, 2017 and 2016 , share-based compensation expense applicable to restricted stock awards was $2,356,000 and $2,097,000 , respectively, and the recognized tax benefit related to this expense was $851,000 and $738,000 , respectively.

Basis of Presentation and Con22

Basis of Presentation and Consolidation (Policies)	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited interim consolidated financial statements include the accounts of Blue Hills Bancorp, Inc. (the "Company"), its wholly-owned subsidiaries, Blue Hills Funding Corporation and Blue Hills Bank (the "Bank"), the principal operating entity, and the Bank's wholly-owned subsidiaries, B.H. Security Corporation, HP Security Corporation and 1196 Corporation, which are Massachusetts security corporations. All significant intercompany balances and transactions have been eliminated in consolidation. The unaudited consolidated financial statements of the Company presented herein have been prepared in accordance with U.S. Generally Accepted Accounting Principles (“GAAP”) for interim financial information and pursuant to the rules of the Securities and Exchange Commission ("SEC") for quarterly reports on Form 10-Q and Article 10 of Regulation S-X and do not include all of the information and note disclosures required by GAAP for a complete set of financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) and disclosures necessary for the fair presentation of the accompanying consolidated financial statements have been included. Interim results are not necessarily reflective of the results of the year. The accompanying unaudited financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto for the year ended December 31, 2016, included in the Company's annual report on Form 10-K. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet and reported amounts of revenues and expenses during the reporting period. Actual results could differ 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 and the valuation of deferred tax assets.
Loan policies	Loan policies The Company has historically granted mortgage and consumer loans to its customers and a substantial portion of the loan portfolio consists of mortgage loans in communities including and near the locations of its banking offices. The ability of the Company’s debtors to honor their contracts is dependent upon the real estate and general economic conditions in these areas. The Company’s loan portfolio includes 1-4 family residential real estate, home equity, commercial real estate, construction, commercial business, and consumer segments. 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 the allowance for loan losses, charge-offs, deferred origination fees and costs, and discounts on purchased loans. Interest income is accrued on the unpaid principal balance. Deferred loan origination fees/costs and discounts on purchased loans are recognized as an adjustment of the related loan yield using the interest method. It is the policy of the Company to discontinue the accrual of interest on loans past due in excess of 90 days, unless the loan is well-secured and in the process of collection. Accrual may be discontinued sooner when in the judgment of management, the ultimate collectability of the principal or interest becomes doubtful. Upon discontinuance of accrual, all interest previously accrued is reversed against interest income. Past due status is based on contractual terms of the loan. The interest on non-accrual loans is accounted for on the cash-basis until qualifying for return to accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due have been current for six consecutive months and future payments are reasonably assured.
Allowance for Loan Losses	Allowance for loan losses The allowance for loan losses is based on the size and the composition of the loan portfolio, delinquency levels, loss experience, economic conditions and other factors related to the collectability of the loan portfolio. Prior to the second quarter of 2016, for portfolios for which the Company had insufficient loss experience, losses from a national peer group of depository institutions with assets between one and five billion dollars for relevant portfolios dating back to 2009 were used. Commencing in the second quarter of 2016, the Company began to phase in its own loss history by loan type based upon the age and loss experience of the loan portfolio. While this change impacted the loss factors used for the majority of loan portfolios, there was no material impact to the amount of the allowance for loan losses. Loss experience is updated at least quarterly with consideration given to unique circumstances in the portfolio. Loan losses are charged against the allowance when management believes the uncollectability of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses is evaluated regularly by management and reflects consideration of all significant factors that affect the collectability of the loan portfolio. The evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available. It is the intention of management to maintain an allowance that is prudently commensurate with the growth in the loan portfolio. The allowance consists of general, allocated and unallocated components, as further described below. General component The general component of the allowance for loan losses is based on a combination of the Company's own history and an extrapolated historical loss experience based on FDIC data for depository institutions with assets of one billion to five billion dollars dating back to 2009, adjusted for qualitative and environmental factors including changes to lending policies and procedures, economic and business conditions, portfolio characteristics, staff experience, problem loan trends, collateral values, concentrations and the competitive, legal and regulatory environment. 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 - The Company does not generally originate loans with a loan-to-value ratio greater than 80 percent and does not generally grant loans that would be classified as subprime upon origination. When the Company does extend credit either on a first- or second-lien basis at a loan-to-value ratio greater than 80 percent , such loans are supported by either mortgage insurance or state guarantee programs. All loans in this segment are collateralized by owner-occupied, 1-4 family residential real estate and repayment is dependent on the credit quality of the individual borrower. The health of the national and state economy, including unemployment rates and housing prices, will have an effect on the credit quality of loans in this segment. Home equity - Loans in this segment are generally secured by first or second liens on residential real estate. Repayment is dependent on the credit quality of the individual borrower. The Company evaluates each loan application based on factors including the borrower’s credit score, income, length of employment, and other factors to establish the creditworthiness of the borrower. Commercial real estate - Loans in this segment include investment real estate and are generally secured by assignments of leases, real estate collateral and owner-occupied properties. In cases where there is a concentration of exposure to a single large tenant, underwriting standards include analysis of the tenant’s ability to support lease payments over the duration of the loan. The underlying cash flows generated by the properties may be adversely impacted by a downturn in the economy due to increased vacancy rates, which in turn, can have an effect on the credit quality in this segment. Payments on loans secured by income-producing properties often depend on the successful operation and management of the properties. Management continually monitors the cash flows of these loans. Construction - Loans in this segment primarily include real estate development loans for which payment is derived from permanent financing or sale of the property. Credit risk is affected by cost overruns, time to sell at an adequate price, and market conditions. Commercial business - Loans in this segment are generally secured by business assets, including accounts receivable, inventory, real estate and intangible assets. Strict underwriting standards include considerations of the borrower’s ability to support the debt service requirements from the underlying historical and projected cash flows of the business, collateral values, the borrower’s credit history and the ultimate collectability of the de bt. Economic conditions, real estate values, commodity prices, unemployment trends and other factors will affect the credit quality of loans in these segments. Consumer - Loans in this segment primarily include used classic and collector automobile loans. A significant portion of the used automobile loan portfolio is comprised of geographically diverse loans originated by and purchased from a third party, who also provides collection services and shares equally in any losses incurred. Allocated component The allocated component relates to loans that are considered impaired. Impairment is measured by either the present value of expected future cash flows discounted at the loan’s effective interest rate or the fair value of the collateral if the loan is collateral dependent. 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. 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. Management reviews all loan types for individual impairment. 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. 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 initially classified as impaired and generally remain impaired for the remaining life of the loan. The impaired classification may be removed if the borrower demonstrates compliance with the modified terms and the restructuring agreement specifies an interest rate equal to that which would be provided to a borrower with similar credit at the time of restructuring. Unallocated component The Company previously maintained an unallocated component to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflected the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating allocated and general reserves in the portfolio. As a large portion of the Company's loan portfolio is now seasoned, the unallocated component of the allowance for loan losses was eliminated during the fourth quarter of 2016.
Recent Accounting Standards Updates	Change in accounting principle - Share-based compensation In March 2016, the Financial Accounting Standards Board ("FASB") issued an Accounting Standards Update ("ASU") 2016-09, Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. This Update amends its guidance on certain aspects of accounting for share-based payments to employees. The provisions of this Update became effective on January 1, 2017. The various changes applicable to adopting this Update include the following: Accounting for income taxes The Update states that entities will no longer record the excess tax benefits or deficiencies related to share-based compensation in additional paid in capital. Instead, they will record excess tax benefits or deficiencies in income tax expense or benefit in the income statement as part of the provision for income taxes on a prospective basis. For interim reporting purposes the excess tax benefits or deficiencies will be recorded as discrete items in the period in which they occur. The presentation of the excess tax benefits will be presented as an operating activity in the statement of cash flows. In addition, under the new guidance, when calculating incremental shares for earnings per share, entities exclude from assumed proceeds excess tax benefits that previously would have been recorded in additional paid in capital. The total income tax benefit recorded in the provision for income taxes relating to excess tax benefits on share-based compensation for the three and nine months ended September 30, 2017 was $0 and $41,000 , respectively. One of the previous requirements for an award to qualify for equity classification was that an entity could not partially settle the award for cash in excess of the employer’s minimum statutory withholding requirements. The determination of an employee's minimum statutory withholding amount has been difficult for some entities. Under this Update, the threshold to qualify for equity classification would permit withholding up to the maximum individual statutory tax rate in the applicable jurisdictions. Also, the Update provides that cash paid by an employer when directly withholding shares for tax-withholding purposes would be classified as a financing activity in the statement of cash flows. Accounting for forfeitures Under this Update, the Company has elected to account for forfeitures of share-based payments by recognizing forfeitures of awards as they occur (e.g., when an award does not vest because the employee leaves the Company or does not meet specific performance measures). The transition to this methodology is applied on a modified retrospective basis, whereby the compensation cost will be calculated as if the entity did not historically record a forfeiture estimate for outstanding awards and instead accounted for forfeitures of outstanding awards as the forfeitures occurred, with a cumulative-effect adjustment to retained earnings. The cumulative effect of changing to this methodology resulted in a $27,000 adjustment to beginning retained earnings in the consolidated statement of changes in stockholders' equity for the nine months ended September 30, 2017 . DARDS UPDATES Recently Issued In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging:Targeted Improvements to Accounting for Hedging Activities . The purpose of this Update is to better align a company’s financial reporting for hedging activities with the economic objectives of those activities. This Update is effective for public business entities for fiscal years beginning after December 15, 2018, with early adoption, including adoption in an interim period, permitted. The Company plans to adopt this Update on January 1, 2019. The Update requires a modified retrospective transition method in which the Company will recognize the cumulative effect of the change on the opening balance of each affected component of equity in the statement of financial position as of the date of adoption. While the Company continues to assess all potential impacts of the standard, we currently expect the adoption to have an immaterial impact on our consolidated financial statements. Future Application of Accounting Pronouncements Previously Issued In May 2017, the FASB issued ASU 2017-09, Compensation-Stock Compensation (Topic 718): Scope of Modification Accounting which amends the scope of modification accounting for share-based payment arrangements. The Update provides guidance on the types of changes to the terms or conditions of share-based payment awards to which an entity would be required to apply modification accounting. Specifically, an entity would not apply modification accounting if the fair value, vesting conditions, and classification of the awards are the same immediately before and after the modification. The Update is effective for public business entities for annual periods being after December 15, 2017, including interim periods within those annual periods. Early adoption is permitted including adopting in any interim period. The Update should be applied prospectively to awards modified on or after the effective date. The impact to the consolidated financial statements upon adopting this Update is not expected to be material. In April 2017, the FASB issued ASU 2017-08 Receivables – Non-refundable Fees and Other Costs (Subtopic 310-20) , which shortens the period of amortization of the premium on certain callable debt securities to the earliest call date. Currently, generally accepted accounting principles (“GAAP”) excludes certain callable debt securities from consideration of early repayment of principal even if the holder is certain that the call will be exercised. The adoption this Update is not anticipated to impact the consolidated financial statements; as of September 30, 2017 , the Company has no callable debt securities. In January 2016, the FASB issued ASU 2016-01, Financial Instruments – Overall, (Subtopic 825-10) . The amendments in this Update address certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. Targeted improvements to generally accepted accounting principles include the requirement for 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 and the elimination of the requirement for public business entities to disclose the methods and significant assumptions used to estimate the fair value for financial instruments measured at amortized cost. For public business entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. While the Company has performed a preliminary evaluation of the provisions of the Update, the effect of the adoption will depend on the Company’s portfolio at the time of transition. The Company does not anticipate that adoption of the Update will materially impact the Company's financial position. The Update also requires Companies to utilize an "exit price" fair value methodology when measuring the fair value of financial instruments. The impact of the change, if applied, to the Company's equity investments for the nine months ended September 30, 2017 would have resulted in a gain of $1,896,000 (pre-tax) being recognized in net income, after reclassification for the realized loss on mutual funds, versus other comprehensive income. See the Consolidated Statements of Comprehensive Income. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . This Update is intended to improve financial reporting about leasing transactions and the key provision impacting the Company is the requirement for a lessee to record a right-to-use asset and a liability representing the obligation to make lease payments for long-term operating leases. Additionally, the Update includes additional quantitative and qualitative disclosures required by lessees and lessors to help users better understand the amount, timing, and uncertainty of cash flows arising from leases. This Update is effective for fiscal years beginning after December 31, 2018, and interim periods within those fiscal years. Lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. The modified retrospective approach includes a number of optional practical expedients that entities may elect to apply as well as transition guidance specific to nonstandard leasing transactions. The Company is currently evaluating the provisions of the Update to determine the potential impact the new standard will have on the Company's consolidated financial statements. The Company's assets and liabilities will increase based on the present value of remaining lease payments for leases in place at the adoption date; however, this is not expected to be material to the Company's results of operations or financial position. Future lease commitments as of September 30, 2017 were $22.9 million . On June 16, 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which removes the thresholds that companies apply to measure credit losses on financial instruments measured at amortized cost, such as loans, receivables, and held-to-maturity debt securities. Under current U.S. GAAP, companies generally recognize credit losses when it is probable that the loss has been incurred. The revised guidance will remove previously established recognition thresholds based on probability, and will require companies to recognize an allowance for credit losses for the difference between the amortized cost basis of a financial instrument and the net amount that the company expects to collect over the instrument’s contractual life. ASU 2016-13 also amends the credit loss measurement guidance for available-for-sale debt securities and will require that credit losses be recorded through an allowance for credit losses. Additionally, this Update may reduce the carrying value of the Company's held-to-maturity investment securities as it will require an allowance on the expected losses over the life of these securities to be recorded upon adoption. The ASU is effective for public business entities fiscal years beginning after December 15, 2019 and for interim periods within those fiscal years. The Company is evaluating the provisions of the Update, and will closely monitor developments and additional guidance to determine the potential impact on the Company's consolidated financial statements. Management has established a steering committee which is in the process of identifying the methodologies and the additional data requirements necessary to implement the Update and has engaged a third-party software service provider to assist in the Company's implementation. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers . This Update provides a revenue recognition framework for any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of non-financial assets unless those contracts are within the scope of other accounting standards. This Update is effective for annual periods beginning after December 15, 2017, including interim periods within that reporting period with early adoption permitted. The timing of the Company’s revenue recognition is not expected to materially change. The Company's revenue relates principally to financial instruments, which are explicitly excluded from the scope of the new guidance. The Company will continue to evaluate any impact as additional guidance is issued and as our internal assessment progresses.

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities	December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Securities Available for Sale: Debt securities: Mortgage- and other asset-backed securities: Privately issued commercial mortgage-backed securities $ 10,530 $ — $ (41 ) $ 10,489 Other asset-backed securities 9,174 6 (195 ) 8,985 Total mortgage- and other asset-backed securities 19,704 6 (236 ) 19,474 Municipal bonds 12,730 120 (157 ) 12,693 Financial services: Banks 20,263 57 (298 ) 20,022 Diversified financials 17,198 190 (198 ) 17,190 Insurance and REITs 18,304 150 (216 ) 18,238 Total financial services 55,765 397 (712 ) 55,450 Other corporate: Industrials 49,217 508 (761 ) 48,964 Utilities 24,895 292 (100 ) 25,087 Total other corporate 74,112 800 (861 ) 74,051 Total debt securities 162,311 1,323 (1,966 ) 161,668 Marketable equity securities: Mutual funds: Domestic community 3,216 25 (19 ) 3,222 Global asset allocation 42,396 48 (2,498 ) 39,946 Total marketable equity securities 45,612 73 (2,517 ) 43,168 Total securities available for sale $ 207,923 $ 1,396 $ (4,483 ) $ 204,836 The amortized cost and estimated fair value of securities available-for-sale and held-to-maturity, with gross unrealized gains and losses, follows: September 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Securities Available for Sale: Marketable equity securities $ 9,437 $ 855 $ (349 ) $ 9,943 Securities Held to Maturity: Debt securities: Government-sponsored enterprises $ 32,676 $ — $ (666 ) $ 32,010 Government-sponsored mortgage-backed and collateralized mortgage obligations 245,120 95 (1,592 ) 243,623 SBA asset-backed securities 25,037 — (221 ) 24,816 Total securities held to maturity $ 302,833 $ 95 $ (2,479 ) $ 300,449
Held-to-maturity Securities	The amortized cost and estimated fair value of securities available-for-sale and held-to-maturity, with gross unrealized gains and losses, follows: September 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Securities Available for Sale: Marketable equity securities $ 9,437 $ 855 $ (349 ) $ 9,943 Securities Held to Maturity: Debt securities: Government-sponsored enterprises $ 32,676 $ — $ (666 ) $ 32,010 Government-sponsored mortgage-backed and collateralized mortgage obligations 245,120 95 (1,592 ) 243,623 SBA asset-backed securities 25,037 — (221 ) 24,816 Total securities held to maturity $ 302,833 $ 95 $ (2,479 ) $ 300,449 Securities Held to Maturity: Debt securities: Government-sponsored enterprises $ 32,667 $ 4 $ (934 ) $ 31,737 Government-sponsored mortgage-backed and collateralized mortgage obligations 153,938 14 (1,806 ) 152,146 SBA asset-backed securities 14,422 — (212 ) 14,210 Total securities held to maturity $ 201,027 $ 18 $ (2,952 ) $ 198,093
Investments Classified by Contractual Maturity Date	The amortized cost and estimated fair value of debt securities by contractual maturity at September 30, 2017 are included in the following table. Expected maturities will differ from contractual maturities because the issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Based on expected maturities, the mortgage and asset-backed securities and collateralized mortgage obligations, included below, have a 3.9 year weighted average duration. Held to Maturity Amortized Cost Fair Value (In thousands) Within 1 year $ 5,002 $ 5,001 After 1 year through 5 years 12,626 12,479 After 5 years through 10 years 15,048 14,530 32,676 32,010 Mortgage and asset-backed securities and collateralized mortgage obligations 270,157 268,439 $ 302,833 $ 300,449
Unrealized Gain (Loss) and Fair Value of Investments - Available-for-sale Securities	December 31, 2016 Less Than Twelve Months More Than Twelve Months Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (In thousands) Securities Available for Sale: Debt securities: Mortgage- and other asset-backed securities: Privately issued commercial mortgage-backed securities $ (11 ) $ 3,163 $ (30 ) $ 7,326 Other asset-backed securities (43 ) 3,924 (152 ) 3,732 Total mortgage- and other asset-backed securities (54 ) 7,087 (182 ) 11,058 Municipal bonds (157 ) 5,301 — — Financial services: Banks (298 ) 14,553 — — Diversified financials (198 ) 9,369 — — Insurance and REITs (216 ) 6,900 — — Total financial services (712 ) 30,822 — — Other corporate: Industrials (655 ) 24,630 (106 ) 2,284 Utilities (99 ) 11,200 (1 ) 794 Total other corporate (754 ) 35,830 (107 ) 3,078 Total debt securities (1,677 ) 79,040 (289 ) 14,136 Marketable equity securities: Mutual funds: Domestic community — — (19 ) 448 Global asset allocation (424 ) 15,153 (2,074 ) 22,442 Total marketable equity securities (424 ) 15,153 (2,093 ) 22,890 Total temporarily impaired available for sale securities $ (2,101 ) $ 94,193 $ (2,382 ) $ 37,026 Information pertaining to securities with gross unrealized losses aggregated by investment category and length of time that individual securities have been in a continuous loss position, follows: September 30, 2017 Less Than Twelve Months More Than Twelve Months Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (In thousands) Securities Available for Sale: Temporarily impaired marketable equity securities $ (329 ) $ 4,431 $ (20 ) $ 446 Securities Held to Maturity: Debt securities: Government-sponsored enterprises $ (356 ) $ 19,226 $ (310 ) $ 12,684 Government-sponsored mortgage-backed and collateralized mortgage obligations (1,447 ) 212,536 (145 ) 9,724 SBA asset-backed securities (38 ) 15,115 (183 ) 9,701 Total temporarily impaired held-to-maturity securities $ (1,841 ) $ 246,877 $ (638 ) $ 32,109
Unrealized Gain (Loss) and Fair Value of Investments - Held-to-maturity Securities	Information pertaining to securities with gross unrealized losses aggregated by investment category and length of time that individual securities have been in a continuous loss position, follows: September 30, 2017 Less Than Twelve Months More Than Twelve Months Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (In thousands) Securities Available for Sale: Temporarily impaired marketable equity securities $ (329 ) $ 4,431 $ (20 ) $ 446 Securities Held to Maturity: Debt securities: Government-sponsored enterprises $ (356 ) $ 19,226 $ (310 ) $ 12,684 Government-sponsored mortgage-backed and collateralized mortgage obligations (1,447 ) 212,536 (145 ) 9,724 SBA asset-backed securities (38 ) 15,115 (183 ) 9,701 Total temporarily impaired held-to-maturity securities $ (1,841 ) $ 246,877 $ (638 ) $ 32,109 December 31, 2016 Less Than Twelve Months More Than Twelve Months Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value (In thousands) Securities Held to Maturity: Debt securities: Government-sponsored enterprises $ (934 ) $ 28,533 $ — $ — Government-sponsored mortgage-backed and collateralized mortgage obligations (1,763 ) 146,098 (43 ) 3,827 SBA asset-backed securities (104 ) 9,157 (108 ) 5,053 Total temporarily impaired held-to-maturity securities $ (2,801 ) $ 183,788 $ (151 ) $ 8,880

Loans and The Allowance for L24

Loans and The Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2017
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	A summary of the balances of loans follows: September 30, December 31, 2017 2016 (In thousands) Real estate: 1-4 family residential $ 902,151 $ 851,154 Home equity 77,149 78,719 Commercial real estate 751,524 687,289 Construction 89,214 76,351 1,820,038 1,693,513 Commercial business 241,301 206,234 Consumer 22,942 29,281 Total loans 2,084,281 1,929,028 Allowance for loan losses (20,248 ) (18,750 ) Discount and fair value adjustments on purchased loans (1,535 ) (1,846 ) Deferred loan costs and fees, net 4,789 4,439 Loans, net $ 2,067,287 $ 1,912,871
Activity in Allowance for Loan Losses	Activity in the allowance for loan losses for the three and nine months ended September 30, 2017 and 2016 , by loan segment, follows: 1-4 Family Home Commercial Construction Commercial Consumer Unallocated Total (In thousands) Three Months Ended September 30, 2017 Allowance at June 30, 2017 $ 4,973 $ 609 $ 8,987 $ 1,610 $ 3,352 $ 386 $ — $ 19,917 Provision (credit) for loan losses (3 ) 61 (153 ) 169 159 9 — 242 Loans charged-off — — — — — (36 ) — (36 ) Recoveries 125 — — — — — — 125 Allowance at September 30, 2017 $ 5,095 $ 670 $ 8,834 $ 1,779 $ 3,511 $ 359 $ — $ 20,248 Three Months Ended September 30, 2016 Allowance at June 30, 2016 $ 3,940 $ 539 $ 7,622 $ 1,747 $ 3,282 $ 496 $ 453 $ 18,079 Provision (credit) for loan losses 272 5 834 (568 ) 2,351 (13 ) (9 ) 2,872 Loans charged-off — — (321 ) — (2,985 ) (17 ) — (3,323 ) Recoveries 100 — — — 2 — — 102 Allowance at September 30, 2016 $ 4,312 $ 544 $ 8,135 $ 1,179 $ 2,650 $ 466 $ 444 $ 17,730 1-4 Family Residential Home Equity Commercial Real Estate Construction Commercial Business Consumer Unallocated Total (In thousands) Nine Months Ended September 30, 2017 Allowance at December 31, 2016 $ 4,846 $ 537 $ 8,374 $ 1,353 $ 3,206 $ 434 $ — $ 18,750 Provision for loan losses 102 133 460 426 296 — — 1,417 Loans charged-off (52 ) — — — — (75 ) — (127 ) Recoveries 199 — — — 9 — — 208 Allowance at September 30, 2017 $ 5,095 $ 670 $ 8,834 $ 1,779 $ 3,511 $ 359 $ — $ 20,248 Nine Months Ended September 30, 2016 Allowance at December 31, 2015 $ 3,916 $ 636 $ 7,147 $ 1,364 $ 2,839 $ 772 $ 428 $ 17,102 Provision (credit) for loan losses 296 (92 ) 1,309 (185 ) 2,874 (260 ) 16 3,958 Loans charged-off — — (321 ) — (3,098 ) (46 ) — (3,465 ) Recoveries 100 — — — 35 — — 135 Allowance at September 30, 2016 $ 4,312 $ 544 $ 8,135 $ 1,179 $ 2,650 $ 466 $ 444 $ 17,730
Allowance for Credit Losses on Financing Receivables	Additional information pertaining to the allowance for loan losses at September 30, 2017 and December 31, 2016 is as follows: 1-4 Family Home Commercial Construction Commercial Consumer Unallocated Total (In thousands) September 30, 2017 Allowance related to impaired loans $ 115 $ — $ — $ — $ — $ 1 $ — $ 116 Allowance related to non-impaired loans 4,980 670 8,834 1,779 3,511 358 — 20,132 Total allowance for loan losses $ 5,095 $ 670 $ 8,834 $ 1,779 $ 3,511 $ 359 $ — $ 20,248 Impaired loans $ 5,805 $ 1,195 $ 4,842 $ — $ — $ 262 $ — $ 12,104 Non-impaired loans 896,346 75,954 746,682 89,214 241,301 22,680 — 2,072,177 Total loans $ 902,151 $ 77,149 $ 751,524 $ 89,214 $ 241,301 $ 22,942 $ — $ 2,084,281 December 31, 2016 Allowance related to impaired loans $ 17 $ — $ — $ — $ — $ — $ — $ 17 Allowance related to non-impaired loans 4,829 537 8,374 1,353 3,206 434 — 18,733 Total allowance for loan losses $ 4,846 $ 537 $ 8,374 $ 1,353 $ 3,206 $ 434 $ — $ 18,750 Impaired loans $ 6,726 $ 1,153 $ 941 $ — $ 241 $ 170 $ — $ 9,231 Non-impaired loans 844,428 77,566 686,348 76,351 205,993 29,111 — 1,919,797 Total loans $ 851,154 $ 78,719 $ 687,289 $ 76,351 $ 206,234 $ 29,281 $ — $ 1,929,028
Past Due Financing Receivables	The following is a summary of past due and non-accrual loans, by loan class, at September 30, 2017 and December 31, 2016 : 30-59 Days Past Due 60-89 Days Past Due Past Due 90 Days or More Total Past Due Loans on Non-accrual (In thousands) September 30, 2017 Real estate: 1-4 family residential $ 1,134 $ 1,005 $ 2,224 $ 4,363 $ 5,039 Home equity 847 438 788 2,073 1,195 Commercial real estate — — 3,966 3,966 4,842 Consumer 111 12 133 256 262 Total $ 2,092 $ 1,455 $ 7,111 $ 10,658 $ 11,338 December 31, 2016 Real estate: 1-4 family residential $ 584 $ 373 $ 2,322 $ 3,279 $ 6,478 Home equity 452 496 775 1,723 1,153 Commercial real estate 1,393 — — 1,393 941 Commercial business 4,996 13 — 5,009 241 Consumer 175 5 7 187 170 Total $ 7,600 $ 887 $ 3,104 $ 11,591 $ 8,983
Impaired Financing Receivables	The following is a summary of information pertaining to impaired loans by loan class at the dates indicated: Recorded Investment Unpaid Principal Balance Related Allowance September 30, 2017 (In thousands) Impaired loans without a valuation allowance: Real estate: 1-4 family residential $ 4,608 $ 5,004 $ — Home equity 1,195 1,305 — Commercial real estate 4,842 5,217 — Commercial business — 114 — Consumer 248 256 — Total 10,893 11,896 — Impaired loans with a valuation allowance: 1-4 family residential 1,197 1,197 115 Consumer 14 14 1 Total 1,211 1,211 116 Total impaired loans $ 12,104 $ 13,107 $ 116 December 31, 2016 Impaired loans without a valuation allowance: Real estate: 1-4 family residential $ 6,605 $ 7,023 $ — Home equity 1,153 1,225 — Commercial real estate 941 1,207 — Commercial business 241 3,279 — Consumer 170 183 — Total 9,110 12,917 — Impaired loans with a valuation allowance: 1-4 family residential 121 313 17 Total impaired loans $ 9,231 $ 13,230 $ 17 The following tables set forth information regarding average balances and interest income recognized (the majority of which is on a cash basis) on impaired loans by class, for the periods indicated: Average Recorded Investment Interest Income Recognized Three Months Ended September 30, 2017 (In thousands) Real estate: 1-4 family residential $ 6,041 $ 60 Home equity 1,198 6 Commercial real estate 4,933 172 Commercial 89 — Consumer 340 2 Total $ 12,601 $ 240 Three Months Ended September 30, 2016 Real estate: 1-4 family residential $ 6,445 $ 186 Home equity 520 5 Commercial real estate 3,037 41 Commercial 1,538 6 Consumer 136 2 Total $ 11,676 $ 240 Nine Months Ended September 30, 2017 Real estate: 1-4 family residential $ 6,330 $ 220 Home equity 1,234 35 Commercial real estate 3,970 207 Consumer 161 5 Commercial 251 7 Total $ 11,946 $ 474 Nine Months Ended September 30, 2016 Real estate: 1-4 family residential $ 6,383 $ 331 Home equity 405 13 Commercial real estate 3,755 135 Commercial 771 36 Consumer 156 6 Total $ 11,470 $ 521
Financing Receivable Credit Quality Indicators	The following tables present the Company’s loans by risk rating at September 30, 2017 and December 31, 2016 : 1-4 Family Residential Home Equity Commercial Real Estate Construction Commercial Business Consumer Total Loans (In thousands) September 30, 2017 Loans rated 1 - 6 $ 1,029 $ 276 $ 742,805 $ 89,214 $ 239,870 $ 4 $ 1,073,198 Loans rated 7 3,041 1,305 3,502 — 1,423 270 9,541 Loans rated 8 2,383 — 5,217 — 8 — 7,608 Loans rated 9 252 — — — — — 252 Loans rated 10 — — — — — — — Loans not rated 895,446 75,568 — — — 22,668 993,682 $ 902,151 $ 77,149 $ 751,524 $ 89,214 $ 241,301 $ 22,942 $ 2,084,281 December 31, 2016 Loans rated 1 - 6 $ 1,054 $ 293 $ 671,872 $ 76,351 $ 188,706 $ 4 $ 938,280 Loans rated 7 3,514 967 9,720 — 17,510 146 31,857 Loans rated 8 2,442 258 5,697 — 18 37 8,452 Loans rated 9 645 — — — — — 645 Loans rated 10 — — — — — — — Loans not rated 843,499 77,201 — — — 29,094 949,794 $ 851,154 $ 78,719 $ 687,289 $ 76,351 $ 206,234 $ 29,281 $ 1,929,028

Derivatives (Tables)

Derivatives (Tables)	9 Months Ended
	Sep. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Derivatives	The table below presents information about derivative financial instruments not designated as hedging instruments at September 30, 2017 and December 31, 2016 . Derivative Gains Derivative Losses Notional Amount Fair Value Notional Amount Fair Value (In thousands) September 30, 2017 Economic hedges: Commercial loan level interest rate swap agreements $ 503,723 $ 9,259 $ 503,723 $ 9,259 Other contracts 27,858 33 42,522 39 Total derivatives $ 531,581 $ 9,292 $ 546,245 $ 9,298 December 31, 2016 Economic hedges: Commercial loan level interest rate swap agreements $ 419,488 $ 9,016 $ 419,488 $ 8,932 Other contracts 15,685 8 33,045 56 Total derivatives $ 435,173 $ 9,024 $ 452,533 $ 8,988
Summary of Fair Value and Location of Mortgage Loand and Forward Loan Sale Commitments	The fair value of such commitments as of September 30, 2017 and December 31, 2016 are outlined below: Assets Liabilities Balance Sheet Location Fair Value Balance Sheet Location Fair Value (In thousands) September 30, 2017 Mortgage loan commitments Other Assets $ 334 Other Liabilities $ 10 Forward loan sale commitments Other Assets 20 Other Liabilities 77 Total $ 354 $ 87 December 31, 2016 Mortgage loan commitments Other Assets $ 111 Other Liabilities $ 3 Forward loan sale commitments Other Assets 15 Other Liabilities 74 Total $ 126 $ 77

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Sep. 30, 2017
Banking and Thrift [Abstract]
Schedule of Deposit Balances	A summary of deposit balances, by type, is as follows: September 30, December 31, 2017 2016 (In thousands) NOW and demand $ 376,864 $ 331,508 Regular savings 244,662 262,984 Money market 666,388 573,204 Brokered money market 41,768 53,357 Total non-certificate accounts 1,329,682 1,221,053 Term certificates of $250,000 or more 119,573 77,550 Term certificates less than $250,000 301,192 262,564 Brokered term certificates 235,106 247,520 Total term certificate accounts 655,871 587,634 Total deposits $ 1,985,553 $ 1,808,687
Schedule of Contractual Maturities of Deposits and Weighted Average Rate	At September 30, 2017 , the scheduled maturities of term certificate accounts, including brokered deposits, are as follows: Amount Weighted Average Rate (Dollars in thousands) Within 1 year $ 379,841 1.09 % 1-2 years 141,883 1.60 2-3 years 84,081 1.83 3-4 years 21,821 1.86 4 years and beyond 28,245 2.04 $ 655,871 1.36 %

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis are summarized below: Level 1 Level 2 Level 3 Total Fair Value (In thousands) September 30, 2017 Assets Available-for-sale marketable equity securities $ 9,943 $ — $ — $ 9,943 Derivative assets: Interest rate swap agreements — 9,292 — 9,292 Forward loan sale commitments — — 20 20 Mortgage loan commitments — — 334 334 Total assets $ 9,943 $ 9,292 $ 354 $ 19,589 Liabilities Derivative liabilities: Interest rate swap agreements $ — $ 9,298 $ — $ 9,298 Forward loan sale commitments — — 77 77 Mortgage loan commitments — — 10 10 Total liabilities $ — $ 9,298 $ 87 $ 9,385 December 31, 2016 Assets Securities available for sale: Debt securities $ — $ 161,668 $ — $ 161,668 Marketable equity securities 43,168 — — 43,168 Derivative assets: Interest rate swap agreements — 9,024 — 9,024 Forward loan sale commitments — — 15 15 Mortgage loan commitments — — 111 111 Total assets $ 43,168 $ 170,692 $ 126 $ 213,986 Liabilities Derivative liabilities: Interest rate swap agreements $ — $ 8,988 $ — $ 8,988 Forward loan sale commitments — — 74 74 Mortgage loan commitments — — 3 3 Total liabilities $ — $ 8,988 $ 77 $ 9,065
Fair Value Measurements, Nonrecurring	The following table summarizes the fair value hierarchy applicable to assets measured at fair value on a non-recurring basis: September 30, 2017 December 31, 2016 Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 (In thousands) Impaired loans $ — $ — $ 1,365 $ — $ — $ 136 The following table summarizes the total gains (losses) on assets measured at fair value on a non-recurring basis for the three and nine months ended September 30, 2017 and 2016 . Three Months Ended September 30, Nine Months Ended September 30, 2017 2016 2017 2016 (In thousands) Impaired loans $ 11 $ (2,690 ) $ 2 $ (2,997 )
Fair Value, by Balance Sheet Grouping	The estimated fair values, and related carrying amounts, of the Company’s financial instruments are as follows. Certain financial instruments and all nonfinancial instruments are exempt from disclosure requirements. Accordingly, the aggregate fair value amounts presented herein do not represent the underlying fair value of the Company. Carrying Amount Fair Value Level 1 Level 2 Level 3 Total (In thousands) September 30, 2017 Financial assets: Cash and cash equivalents $ 38,363 $ 38,363 $ — $ — $ 38,363 Securities available for sale 9,943 9,943 — — 9,943 Securities held to maturity 302,833 — 300,449 — 300,449 Federal Home Loan Bank stock 9,410 — — 9,410 9,410 Loans and loans held for sale 2,079,555 — — 2,064,348 2,064,348 Accrued interest receivable 5,802 — — 5,802 5,802 Financial liabilities: Deposits 1,985,553 — — 1,985,561 1,985,561 Borrowings 130,000 — 128,837 — 128,837 On-balance sheet derivative financial instruments: Derivative assets: Interest rate swap agreements 9,292 — 9,292 — 9,292 Forward loan sale commitments 20 — — 20 20 Mortgage loan commitments 334 — — 334 334 Derivative liabilities: Interest rate swap agreements 9,298 — 9,298 — 9,298 Forward loan sale commitments 77 — — 77 77 Mortgage loan commitments 10 — — 10 10 Carrying Amount Fair Value Level 1 Level 2 Level 3 Total (In thousands) December 31, 2016 Financial assets: Cash and cash equivalents $ 30,496 $ 30,496 $ — $ — $ 30,496 Securities available for sale 204,836 43,168 161,668 — 204,836 Securities held to maturity 201,027 — 198,093 — 198,093 Federal Home Loan Bank stock 13,352 — — 13,352 13,352 Loans and loans held for sale 1,915,632 — — 1,903,978 1,903,978 Accrued interest receivable 6,057 — — 6,057 6,057 Financial liabilities: Deposits 1,808,687 — — 1,808,629 1,808,629 Borrowings 251,000 — 250,648 — 250,648 On-balance sheet derivative financial instruments: Derivative assets: Interest rate swap agreements 9,024 — 9,024 — 9,024 Forward loan sale commitments 15 — — 15 15 Mortgage loan commitments 111 — — 111 111 Derivative liabilities: Interest rate swap agreements 8,988 — 8,988 — 8,988 Forward loan sale commitments 74 — — 74 74 Mortgage loan commitments 3 — — 3 3

Comprehensive Income (Tables)

Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Loss	The components of accumulated other comprehensive loss, included in stockholders' equity, are as follows: September 30, December 31, 2017 2016 (In thousands) Securities available for sale: Net unrealized gain (loss) $ 506 $ (3,087 ) Tax effect (223 ) 1,007 Net-of-tax amount 283 (2,080 ) Securities held to maturity: Net unrealized gain on transferred securities 270 337 Tax effect (101 ) (114 ) Net-of-tax amount 169 223 Defined benefit pension plan: Unrecognized net actuarial loss (3,215 ) (3,482 ) Tax effect 1,149 1,270 Net-of-tax amount (2,066 ) (2,212 ) $ (1,614 ) $ (4,069 )

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The Company's and the Bank's actual capital amounts and ratios as of September 30, 2017 and December 31, 2016 are also presented in the following table. Actual Minimum Capital Requirement Minimum To Be Well Capitalized Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Blue Hills Bancorp, Inc.: September 30, 2017 Total capital (to risk weighted assets) $ 410,703 20.6 % $ 159,395 8.0 % $ 199,244 10.0 % Tier 1 capital (to risk weighted assets) 390,455 19.6 119,546 6.0 159,395 8.0 Common equity Tier 1 (to risk weighted assets) 390,455 19.6 89,660 4.5 129,509 6.5 Tier 1 capital (to average assets) 390,455 15.5 100,834 4.0 126,043 5.0 December 31, 2016 Total capital (to risk weighted assets) $ 395,325 20.5 % $ 154,471 8.0 % $ 193,089 10.0 % Tier 1 capital (to risk weighted assets) 376,575 19.5 115,854 6.0 154,471 8.0 Common equity Tier 1 (to risk weighted assets) 376,575 19.5 86,890 4.5 125,508 6.5 Tier 1 capital (to average assets) 376,575 16.0 94,166 4.0 117,708 5.0 Blue Hills Bank: September 30, 2017 Total capital (to risk weighted assets) $ 338,168 17.0 % $ 159,135 8.0 % $ 198,918 10.0 % Tier 1 capital (to risk weighted assets) 317,920 16.0 119,351 6.0 159,135 8.0 Common equity Tier 1 (to risk weighted assets) 317,920 16.0 89,513 4.5 129,297 6.5 Tier 1 capital (to average assets) 317,920 12.6 100,601 4.0 125,752 5.0 December 31, 2016 Total capital (to risk weighted assets) $ 313,457 16.3 % $ 154,196 8.0 % $ 192,745 10.0 % Tier 1 capital (to risk weighted assets) 294,707 15.3 115,647 6.0 154,196 8.0 Common equity Tier 1 (to risk weighted assets) 294,707 15.3 86,735 4.5 125,284 6.5 Tier 1 capital (to average assets) 294,707 12.5 94,099 4.0 117,623 5.0

Employee Stock Ownership Plan (

Employee Stock Ownership Plan (Tables)	9 Months Ended
	Sep. 30, 2017
Retirement Benefits [Abstract]
Employee Stock Ownership Plan (ESOP) Disclosures	Shares held by the ESOP include the following: September 30, 2017 December 31, 2016 Allocated 219,862 149,613 Committed to be allocated 56,778 75,912 Unallocated 1,992,830 2,049,608 2,269,470 2,275,133

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Three Months Ended September 30, 2017 2016 (In thousands, except share amounts) Net income applicable to common stock $ 3,841 $ 1,630 Average number of common shares outstanding 26,865,148 27,212,837 Less: Average unallocated ESOP shares (2,002,397 ) (2,078,100 ) Less: Average unvested restricted stock awards (889,635 ) (1,005,225 ) Average number of common shares outstanding used to calculate basic earnings per common share 23,973,116 24,129,512 Effect of dilutive stock options 240,806 — Effect of dilutive unvested restricted stock awards 296,170 178,028 Average number of common shares outstanding used to calculate diluted earnings per common share 24,510,092 24,307,540 Earnings per common share: Basic $ 0.16 $ 0.07 Diluted $ 0.16 $ 0.07 Nine Months Ended September 30, 2017 2016 (In thousands, except share amounts) Net income applicable to common stock $ 15,196 $ 4,655 Average number of common shares outstanding 26,855,598 27,682,795 Less: Average unallocated ESOP shares (2,021,219 ) (2,096,690 ) Less: Average unvested restricted stock awards (888,494 ) (1,000,535 ) Average number of common shares outstanding used to calculate basic earnings per common share 23,945,885 24,585,570 Effect of dilutive stock options 178,712 — Effect of dilutive unvested restricted stock awards 253,065 122,989 Average number of common shares outstanding used to calculate diluted earnings per common share 24,377,662 24,708,559 Earnings per common share: Basic $ 0.63 $ 0.19 Diluted $ 0.62 $ 0.19

Share-Based Compensation (Table

Share-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The Company made the following awards of options to purchase shares of common stock during the nine months ended September 30, 2017 . Options granted 412,100 Vesting period (years) 5 Term (years) 10 Expected volatility 26.91%-27.43% Expected life (years) 6.5 Expected dividend yield 0.71%-2.22% Risk free interest rate 1.87%-2.16% Fair value per option $4.07-$5.31
Schedule of Share-based Compensation, Stock Options, Activity	A summary of the status of the Company's stock option grants for the nine months ended September 30, 2017 , is presented in the table below: Stock Option Awards Weighted Average Exercise Price Weighted Average Remaining Contractual Term (years) Aggregate Intrinsic Value Outstanding at December 31, 2016 2,449,670 $ 14.06 — $ — Granted 412,100 18.22 — — Forfeited (156,650 ) 14.18 — — Exercised (15,660 ) 13.88 — 65,000 Outstanding at September 30, 2017 2,689,460 $ 14.70 8.24 $ 12,115,000 Exercisable at September 30, 2017 491,230 $ 14.07 8.02 $ 2,520,000 Unrecognized compensation cost inclusive of directors' options at September 30, 2017 $ 7,542,000 Weighted average remaining recognition period (years) 3.36
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	The following table presents the activity in non-vested stock awards under the Equity Plan for the nine months ended September 30, 2017 : Outstanding Restricted Stock Awards Weighted Average Grant Price Nonvested stock awards at December 31, 2016 816,070 $ 14.06 Granted 184,695 18.25 Vested (21,873 ) 14.00 Forfeited (85,317 ) 14.11 Nonvested stock awards at September 30, 2017 893,575 $ 14.92 Unrecognized compensation cost inclusive of directors' awards at September 30, 2017 $10,498,000 Weighted average remaining recognition period (years) 3.42

Basis of Presentation and Con33

Basis of Presentation and Consolidation - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Dec. 31, 2016
Subsidiary or Equity Method Investee [Line Items]
Tax benefit from adoption of ASU	$ 0	$ 41
Retained earnings
Subsidiary or Equity Method Investee [Line Items]
Cumulative effect on change in accounting principle			$ (27)
ASU 2016-09 | Retained earnings
Subsidiary or Equity Method Investee [Line Items]
Cumulative effect on change in accounting principle			$ 27
1-4 Family Residential
Subsidiary or Equity Method Investee [Line Items]
Origination covenants, maximum loan-to-value ratio (greater than) (percent)		80.00%

Accounting Standards Updates -

Accounting Standards Updates - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accounting Changes and Error Corrections [Abstract]
Future lease commitments	$ 22,900		$ 22,900
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Change in unrealized holding gains (losses)	$ (494)	$ 2,198	3,499	$ 9,125
Pro Forma | Accounting Standards Update 2016-01
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Change in unrealized holding gains (losses)			$ 1,896

Securities - Available-for-sale

Securities - Available-for-sale Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Debt securities:
Amortized Cost		$ 162,311
Gross Unrealized Gains		1,323
Gross Unrealized Losses		(1,966)
Fair Value		161,668
Marketable equity securities:
Amortized Cost	$ 9,437	45,612
Gross Unrealized Gains	855	73
Gross Unrealized Losses	(349)	(2,517)
Fair Value	9,943	43,168
Available-for-sale securities:
Amortized Cost		207,923
Gross Unrealized Gains		1,396
Gross Unrealized Losses		(4,483)
Fair Value	$ 9,943	204,836
Total mortgage- and other asset-backed securities
Debt securities:
Amortized Cost		19,704
Gross Unrealized Gains		6
Gross Unrealized Losses		(236)
Fair Value		19,474
Privately issued commercial mortgage-backed securities
Debt securities:
Amortized Cost		10,530
Gross Unrealized Gains		0
Gross Unrealized Losses		(41)
Fair Value		10,489
Other asset-backed securities
Debt securities:
Amortized Cost		9,174
Gross Unrealized Gains		6
Gross Unrealized Losses		(195)
Fair Value		8,985
Municipal bonds
Debt securities:
Amortized Cost		12,730
Gross Unrealized Gains		120
Gross Unrealized Losses		(157)
Fair Value		12,693
Domestic community
Marketable equity securities:
Amortized Cost		3,216
Gross Unrealized Gains		25
Gross Unrealized Losses		(19)
Fair Value		3,222
Global asset allocation
Marketable equity securities:
Amortized Cost		42,396
Gross Unrealized Gains		48
Gross Unrealized Losses		(2,498)
Fair Value		39,946
Total other corporate | Corporate debt securities
Debt securities:
Amortized Cost		74,112
Gross Unrealized Gains		800
Gross Unrealized Losses		(861)
Fair Value		74,051
Industrials | Corporate debt securities
Debt securities:
Amortized Cost		49,217
Gross Unrealized Gains		508
Gross Unrealized Losses		(761)
Fair Value		48,964
Utilities | Corporate debt securities
Debt securities:
Amortized Cost		24,895
Gross Unrealized Gains		292
Gross Unrealized Losses		(100)
Fair Value		25,087
Total financial services | Corporate debt securities
Debt securities:
Amortized Cost		55,765
Gross Unrealized Gains		397
Gross Unrealized Losses		(712)
Fair Value		55,450
Banks | Corporate debt securities
Debt securities:
Amortized Cost		20,263
Gross Unrealized Gains		57
Gross Unrealized Losses		(298)
Fair Value		20,022
Diversified financials | Corporate debt securities
Debt securities:
Amortized Cost		17,198
Gross Unrealized Gains		190
Gross Unrealized Losses		(198)
Fair Value		17,190
Insurance and REITs | Corporate debt securities
Debt securities:
Amortized Cost		18,304
Gross Unrealized Gains		150
Gross Unrealized Losses		(216)
Fair Value		$ 18,238

Securities - Held-to-maturity S

Securities - Held-to-maturity Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Debt securities:
Amortized Cost	$ 302,833	$ 201,027
Gross Unrealized Gains	95	18
Gross Unrealized Losses	(2,479)	(2,952)
Fair Value	300,449	198,093
Government-sponsored enterprises
Debt securities:
Amortized Cost	32,676	32,667
Gross Unrealized Gains	0	4
Gross Unrealized Losses	(666)	(934)
Fair Value	32,010	31,737
Government-sponsored mortgage-backed and collateralized mortgage obligations
Debt securities:
Amortized Cost	245,120	153,938
Gross Unrealized Gains	95	14
Gross Unrealized Losses	(1,592)	(1,806)
Fair Value	243,623	152,146
SBA asset-backed securities
Debt securities:
Amortized Cost	25,037	14,422
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(221)	(212)
Fair Value	$ 24,816	$ 14,210

Securities - Schedule of Contra

Securities - Schedule of Contractual Maturities of Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Within 1 year, Held to Maturity, Amortized Cost	$ 5,002
After 1 year through 5 years, Held to Maturity, Amortized Cost	12,626
After 5 years through 10 years, Held to Maturity, Amortized Cost	15,048
Single Maturity Date, Held to Maturity, Amortized Cost	32,676
Mortgage- and asset-backed securities and collateralized mortgage obligations - Amortized Basis	270,157
Amortized Cost	302,833	$ 201,027
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Fair Value [Abstract]
Within 1 year, Held to Maturity, Fair Value	5,001
After 1 year through 5 years, Held to Maturity, Fair Value	12,479
After 5 years through 10 years, Held to Maturity, Fair Value	14,530
Single Maturity Date, Held to Maturity, Fair Value	32,010
Mortgage- and asset-backed securities and collateralized mortgage obligations - Fair Value	268,439
Held-to-maturity securities, total debt securities	$ 300,449	$ 198,093

Securities - Available-for-sa38

Securities - Available-for-sale Securities Unrealized Loss (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		$ (2,101)
Gross Unrealized Losses - More than twelve months		(2,382)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		94,193
Fair Value - More than twelve months		37,026
Total debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(1,677)
Gross Unrealized Losses - More than twelve months		(289)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		79,040
Fair Value - More than twelve months		14,136
Total mortgage- and other asset-backed securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(54)
Gross Unrealized Losses - More than twelve months		(182)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		7,087
Fair Value - More than twelve months		11,058
Privately issued commercial mortgage-backed securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(11)
Gross Unrealized Losses - More than twelve months		(30)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		3,163
Fair Value - More than twelve months		7,326
Other asset-backed securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(43)
Gross Unrealized Losses - More than twelve months		(152)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		3,924
Fair Value - More than twelve months		3,732
Municipal bonds
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(157)
Gross Unrealized Losses - More than twelve months		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		5,301
Fair Value - More than twelve months		0
Temporarily impaired marketable equity securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	$ (329)
Gross Unrealized Losses - More than twelve months	(20)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	4,431
Fair Value - More than twelve months	$ 446
Total marketable equity securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(424)
Gross Unrealized Losses - More than twelve months		(2,093)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		15,153
Fair Value - More than twelve months		22,890
Domestic community
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		0
Gross Unrealized Losses - More than twelve months		(19)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		0
Fair Value - More than twelve months		448
Global asset allocation
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(424)
Gross Unrealized Losses - More than twelve months		(2,074)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		15,153
Fair Value - More than twelve months		22,442
Total other corporate | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(754)
Gross Unrealized Losses - More than twelve months		(107)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		35,830
Fair Value - More than twelve months		3,078
Industrials | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(655)
Gross Unrealized Losses - More than twelve months		(106)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		24,630
Fair Value - More than twelve months		2,284
Utilities | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(99)
Gross Unrealized Losses - More than twelve months		(1)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		11,200
Fair Value - More than twelve months		794
Total financial services | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(712)
Gross Unrealized Losses - More than twelve months		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		30,822
Fair Value - More than twelve months		0
Banks | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(298)
Gross Unrealized Losses - More than twelve months		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		14,553
Fair Value - More than twelve months		0
Diversified financials | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(198)
Gross Unrealized Losses - More than twelve months		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		9,369
Fair Value - More than twelve months		0
Insurance and REITs | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(216)
Gross Unrealized Losses - More than twelve months		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		6,900
Fair Value - More than twelve months		$ 0

Securities - Held-to-maturity39

Securities - Held-to-maturity Securities Unrealized Loss (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	$ (1,841)	$ (2,801)
Gross Unrealized Losses - More than twelve months	(638)	(151)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	246,877	183,788
Fair Value - More than twelve months	32,109	8,880
Total mortgage- and other asset-backed securities
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(356)
Gross Unrealized Losses - More than twelve months	(310)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	19,226
Fair Value - More than twelve months	12,684
Municipal bonds
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(1,447)
Gross Unrealized Losses - More than twelve months	(145)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	212,536
Fair Value - More than twelve months	9,724
Government-sponsored enterprises
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(934)
Gross Unrealized Losses - More than twelve months		0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		28,533
Fair Value - More than twelve months		0
Government-sponsored mortgage-backed and collateralized mortgage obligations
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(1,763)
Gross Unrealized Losses - More than twelve months		(43)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		146,098
Fair Value - More than twelve months		3,827
SBA asset-backed securities
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(38)	(104)
Gross Unrealized Losses - More than twelve months	(183)	(108)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	15,115	9,157
Fair Value - More than twelve months	$ 9,701	$ 5,053

Securities - Narrative (Details

Securities - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)mutual_fund	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)mutual_fund	Sep. 30, 2016USD ($)
Schedule of Available-for-sale Securities [Line Items]
Mortgage and asset-backed securities and collateralized mortgage obligations, weighted average duration			3 years 10 months 25 days
Proceeds from sale of available-for-sale securities	$ 0	$ 18,800	$ 213,084	$ 78,990
Available-for-sale securities, gross realized gains		600	2,200	1,900
Available-for-sale securities, gross realized losses		$ (7)	$ (2,300)	$ (1,000)
Held-to-maturity securities, depreciation, percentage of amortized cost basis	1.00%		1.00%
Number of securities in loss positions | mutual_fund	2		2
Marketable equity securities
Schedule of Available-for-sale Securities [Line Items]
Gross unrealized losses	$ 349		$ 349
Available-for-sale securities, depreciation, percentage of amortized cost basis	6.70%		6.70%

Loans and The Allowance for L41

Loans and The Allowance for Loan Losses - Summary of Loan Balances (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 2,084,281	$ 1,929,028
Allowance for loan losses	(20,248)	(18,750)
Discount and fair value adjustments on purchased loans	(1,535)	(1,846)
Deferred loan costs and fees, net	4,789	4,439
Loans, net	2,067,287	1,912,871
Consumer and Commercial Portfolio Segment | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	89,214	76,351
Consumer, Excluding Consumer Other Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,820,038	1,693,513
Consumer, Excluding Consumer Other Portfolio Segment | 1-4 Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	902,151	851,154
Consumer, Excluding Consumer Other Portfolio Segment | Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	77,149	78,719
Consumer, Excluding Consumer Other Portfolio Segment | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	751,524	687,289
Commercial business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	241,301	206,234
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 22,942	$ 29,281

Loans and The Allowance for L42

Loans and The Allowance for Loan Losses - Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	$ 19,917	$ 18,079	$ 18,750	$ 17,102
Provision (credit) for loan losses	242	2,872	1,417	3,958
Loans charged-off	(36)	(3,323)	(127)	(3,465)
Recoveries	125	102	208	135
Loans and Leases Receivable, Ending Allowance	20,248	17,730	20,248	17,730
Unallocated
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	0	453	0	428
Provision (credit) for loan losses	0	(9)	0	16
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Loans and Leases Receivable, Ending Allowance	0	444	0	444
Consumer, Excluding Consumer Other Portfolio Segment | 1-4 Family Residential
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	4,973	3,940	4,846	3,916
Provision (credit) for loan losses	(3)	272	102	296
Loans charged-off	0	0	(52)	0
Recoveries	125	100	199	100
Loans and Leases Receivable, Ending Allowance	5,095	4,312	5,095	4,312
Consumer, Excluding Consumer Other Portfolio Segment | Home Equity
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	609	539	537	636
Provision (credit) for loan losses	61	5	133	(92)
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Loans and Leases Receivable, Ending Allowance	670	544	670	544
Consumer, Excluding Consumer Other Portfolio Segment | Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	8,987	7,622	8,374	7,147
Provision (credit) for loan losses	(153)	834	460	1,309
Loans charged-off	0	(321)	0	(321)
Recoveries	0	0	0	0
Loans and Leases Receivable, Ending Allowance	8,834	8,135	8,834	8,135
Consumer and Commercial Portfolio Segment | Construction
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	1,610	1,747	1,353	1,364
Provision (credit) for loan losses	169	(568)	426	(185)
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Loans and Leases Receivable, Ending Allowance	1,779	1,179	1,779	1,179
Commercial business
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	3,352	3,282	3,206	2,839
Provision (credit) for loan losses	159	2,351	296	2,874
Loans charged-off	0	(2,985)	0	(3,098)
Recoveries	0	2	9	35
Loans and Leases Receivable, Ending Allowance	3,511	2,650	3,511	2,650
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	386	496	434	772
Provision (credit) for loan losses	9	(13)	0	(260)
Loans charged-off	(36)	(17)	(75)	(46)
Recoveries	0	0	0	0
Loans and Leases Receivable, Ending Allowance	$ 359	$ 466	$ 359	$ 466

Loans and The Allowance for L43

Loans and The Allowance for Loan Losses - Additional Activity in Allowance for Loan Losses (Details) - 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]
Allowance related to impaired loans	$ 116		$ 17
Allowance related to non-impaired loans	20,132		18,733
Total allowance for loan losses	20,248	$ 19,917	18,750	$ 17,730	$ 18,079	$ 17,102
Impaired loans	12,104		9,231
Non-impaired loans	2,072,177		1,919,797
Total loans	2,084,281		1,929,028
Unallocated
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0		0
Allowance related to non-impaired loans	0		0
Total allowance for loan losses	0	0	0	444	453	428
Impaired loans	0		0
Non-impaired loans	0		0
Total loans	0		0
Consumer, Excluding Consumer Other Portfolio Segment | 1-4 Family Residential
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	115		17
Allowance related to non-impaired loans	4,980		4,829
Total allowance for loan losses	5,095	4,973	4,846	4,312	3,940	3,916
Impaired loans	5,805		6,726
Non-impaired loans	896,346		844,428
Total loans	902,151		851,154
Consumer, Excluding Consumer Other Portfolio Segment | Home Equity
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0		0
Allowance related to non-impaired loans	670		537
Total allowance for loan losses	670	609	537	544	539	636
Impaired loans	1,195		1,153
Non-impaired loans	75,954		77,566
Total loans	77,149		78,719
Consumer, Excluding Consumer Other Portfolio Segment | Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0		0
Allowance related to non-impaired loans	8,834		8,374
Total allowance for loan losses	8,834	8,987	8,374	8,135	7,622	7,147
Impaired loans	4,842		941
Non-impaired loans	746,682		686,348
Total loans	751,524		687,289
Consumer and Commercial Portfolio Segment | Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0		0
Allowance related to non-impaired loans	1,779		1,353
Total allowance for loan losses	1,779	1,610	1,353	1,179	1,747	1,364
Impaired loans	0		0
Non-impaired loans	89,214		76,351
Total loans	89,214		76,351
Commercial business
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0		0
Allowance related to non-impaired loans	3,511		3,206
Total allowance for loan losses	3,511	3,352	3,206	2,650	3,282	2,839
Impaired loans	0		241
Non-impaired loans	241,301		205,993
Total loans	241,301		206,234
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	1		0
Allowance related to non-impaired loans	358		434
Total allowance for loan losses	359	$ 386	434	$ 466	$ 496	$ 772
Impaired loans	262		170
Non-impaired loans	22,680		29,111
Total loans	$ 22,942		$ 29,281

Loans and The Allowance for L44

Loans and The Allowance for Loan Losses - Summary of Past Due and Non-accrual loans, by class (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 10,658	$ 11,591
Loans on Non-accrual	11,338	8,983
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,092	7,600
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,455	887
Past Due 90 Days or More
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	7,111	3,104
Consumer, Excluding Consumer Other Portfolio Segment | 1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,363	3,279
Loans on Non-accrual	5,039	6,478
Consumer, Excluding Consumer Other Portfolio Segment | Home Equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,073	1,723
Loans on Non-accrual	1,195	1,153
Consumer, Excluding Consumer Other Portfolio Segment | Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,966	1,393
Loans on Non-accrual	4,842	941
Consumer, Excluding Consumer Other Portfolio Segment | 30-59 Days Past Due | 1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,134	584
Consumer, Excluding Consumer Other Portfolio Segment | 30-59 Days Past Due | Home Equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	847	452
Consumer, Excluding Consumer Other Portfolio Segment | 30-59 Days Past Due | Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	1,393
Consumer, Excluding Consumer Other Portfolio Segment | 60-89 Days Past Due | 1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,005	373
Consumer, Excluding Consumer Other Portfolio Segment | 60-89 Days Past Due | Home Equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	438	496
Consumer, Excluding Consumer Other Portfolio Segment | 60-89 Days Past Due | Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Consumer, Excluding Consumer Other Portfolio Segment | Past Due 90 Days or More | 1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,224	2,322
Consumer, Excluding Consumer Other Portfolio Segment | Past Due 90 Days or More | Home Equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	788	775
Consumer, Excluding Consumer Other Portfolio Segment | Past Due 90 Days or More | Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,966	0
Commercial business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		5,009
Loans on Non-accrual		241
Commercial business | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		4,996
Commercial business | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		13
Commercial business | Past Due 90 Days or More
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		0
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	256	187
Loans on Non-accrual	262	170
Consumer | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	111	175
Consumer | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	12	5
Consumer | Past Due 90 Days or More
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 133	$ 7

Loans and The Allowance for L45

Loans and The Allowance for Loan Losses - Summary of Impaired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Recorded Investment
Recorded Investment, without valuation allowance	$ 10,893	$ 9,110
Recorded Investment, with a valuation allowance	1,211
Recorded Investment, total	12,104	9,231
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	11,896	12,917
Unpaid Principal Balance, with a valuation allowance	1,211
Unpaid Principal Balance, total	13,107	13,230
Related Allowance	116	17
1-4 Family Residential
Recorded Investment
Recorded Investment, with a valuation allowance	1,197	121
Unpaid Principal Balance
Unpaid Principal Balance, with a valuation allowance	1,197	313
Related Allowance	115	17
Consumer, Excluding Consumer Other Portfolio Segment | 1-4 Family Residential
Recorded Investment
Recorded Investment, without valuation allowance	4,608	6,605
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	5,004	7,023
Consumer, Excluding Consumer Other Portfolio Segment | Home Equity
Recorded Investment
Recorded Investment, without valuation allowance	1,195	1,153
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	1,305	1,225
Consumer, Excluding Consumer Other Portfolio Segment | Commercial Real Estate
Recorded Investment
Recorded Investment, without valuation allowance	4,842	941
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	5,217	1,207
Commercial business
Recorded Investment
Recorded Investment, without valuation allowance	0	241
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	114	3,279
Consumer
Recorded Investment
Recorded Investment, without valuation allowance	248	170
Recorded Investment, with a valuation allowance	14
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	256	$ 183
Unpaid Principal Balance, with a valuation allowance	14
Related Allowance	$ 1

Loans and The Allowance for L46

Loans and The Allowance for Loan Losses - Summary of Average Recorded Investments and Interest Income of Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 12,601	$ 11,676	$ 11,946	$ 11,470
Interest Income Recognized	240	240	474	521
Consumer, Excluding Consumer Other Portfolio Segment | 1-4 Family Residential
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	6,041	6,445	6,330	6,383
Interest Income Recognized	60	186	220	331
Consumer, Excluding Consumer Other Portfolio Segment | Home Equity
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	1,198	520	1,234	405
Interest Income Recognized	6	5	35	13
Consumer, Excluding Consumer Other Portfolio Segment | Commercial Real Estate
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	4,933	3,037	3,970	3,755
Interest Income Recognized	172	41	207	135
Consumer
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	340	136	161	156
Interest Income Recognized	2	2	5	6
Commercial business
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	89	1,538	251	771
Interest Income Recognized	$ 0	$ 6	$ 7	$ 36

Loans and The Allowance for L47

Loans and The Allowance for Loan Losses - Summary of Loan by Risk Rating (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 2,084,281	$ 1,929,028
Loans rated 1 - 6
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,073,198	938,280
Loans rated 7
Financing Receivable, Recorded Investment [Line Items]
Total loans	9,541	31,857
Loans rated 8
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,608	8,452
Loans rated 9
Financing Receivable, Recorded Investment [Line Items]
Total loans	252	645
Loans rated 10
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans not rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	993,682	949,794
Consumer, Excluding Consumer Other Portfolio Segment
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,820,038	1,693,513
Consumer, Excluding Consumer Other Portfolio Segment | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	902,151	851,154
Consumer, Excluding Consumer Other Portfolio Segment | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	77,149	78,719
Consumer, Excluding Consumer Other Portfolio Segment | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	751,524	687,289
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 1 - 6 | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,029	1,054
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 1 - 6 | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	276	293
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 1 - 6 | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	742,805	671,872
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 7 | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,041	3,514
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 7 | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,305	967
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 7 | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,502	9,720
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 8 | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,383	2,442
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 8 | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	258
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 8 | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,217	5,697
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 9 | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	252	645
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 9 | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 9 | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 10 | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 10 | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 10 | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer, Excluding Consumer Other Portfolio Segment | Loans not rated | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	895,446	843,499
Consumer, Excluding Consumer Other Portfolio Segment | Loans not rated | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	75,568	77,201
Consumer, Excluding Consumer Other Portfolio Segment | Loans not rated | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer and Commercial Portfolio Segment | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	89,214	76,351
Consumer and Commercial Portfolio Segment | Loans rated 1 - 6 | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	89,214	76,351
Consumer and Commercial Portfolio Segment | Loans rated 7 | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer and Commercial Portfolio Segment | Loans rated 8 | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer and Commercial Portfolio Segment | Loans rated 9 | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer and Commercial Portfolio Segment | Loans rated 10 | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer and Commercial Portfolio Segment | Loans not rated | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial business
Financing Receivable, Recorded Investment [Line Items]
Total loans	241,301	206,234
Commercial business | Loans rated 1 - 6
Financing Receivable, Recorded Investment [Line Items]
Total loans	239,870	188,706
Commercial business | Loans rated 7
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,423	17,510
Commercial business | Loans rated 8
Financing Receivable, Recorded Investment [Line Items]
Total loans	8	18
Commercial business | Loans rated 9
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial business | Loans rated 10
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial business | Loans not rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	22,942	29,281
Consumer | Loans rated 1 - 6
Financing Receivable, Recorded Investment [Line Items]
Total loans	4	4
Consumer | Loans rated 7
Financing Receivable, Recorded Investment [Line Items]
Total loans	270	146
Consumer | Loans rated 8
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	37
Consumer | Loans rated 9
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer | Loans rated 10
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer | Loans not rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 22,668	$ 29,094

Derivatives - Derivative Financ

Derivatives - Derivative Financial Instruments Not Designated as hedging Instruments (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Derivative Gains, notional amount	$ 531,581	$ 435,173
Derivative Gains, fair value	9,292	9,024
Derivative Losses, notional amount	546,245	452,533
Derivative Losses, fair value	9,298	8,988
Commercial loan level interest rate swap agreements
Derivatives, Fair Value [Line Items]
Derivative Gains, notional amount	503,723	419,488
Derivative Gains, fair value	9,259	9,016
Derivative Losses, notional amount	503,723	419,488
Derivative Losses, fair value	9,259	8,932
Other contracts
Derivatives, Fair Value [Line Items]
Derivative Gains, notional amount	27,858	15,685
Derivative Gains, fair value	33	8
Derivative Losses, notional amount	42,522	33,045
Derivative Losses, fair value	$ 39	$ 56

Derivatives - Narrative (Detail

Derivatives - Narrative (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Derivative Gains, fair value	$ 9,292	$ 9,024
Derivative Losses, fair value	9,298	8,988
Mortgage loan commitments
Derivative [Line Items]
Notional amount	31,000	6,800
Forward loan sale commitments
Derivative [Line Items]
Notional amount	$ 43,200	$ 9,500

Derivatives - Summary of Fair V

Derivatives - Summary of Fair Value and Location for Rate-Lock and Forward Loan Sale Commitments (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Derivative assets:	$ 9,292	$ 9,024
Derivative liabilities:	9,298	8,988
Mortgage Banking Derivatives
Derivative [Line Items]
Derivative assets:	354	126
Derivative liabilities:	87	77
Other Assets | Mortgage loan commitments
Derivative [Line Items]
Derivative assets:	334	111
Other Assets | Forward loan sale commitments
Derivative [Line Items]
Derivative assets:	20	15
Other Liabilities | Mortgage loan commitments
Derivative [Line Items]
Derivative liabilities:	10	3
Other Liabilities | Forward loan sale commitments
Derivative [Line Items]
Derivative liabilities:	$ 77	$ 74

Deposits - Summary of Deposit B

Deposits - Summary of Deposit Balances (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
NOW and demand	$ 376,864	$ 331,508
Regular savings	244,662	262,984
Money market	666,388	573,204
Brokered money market	41,768	53,357
Total non-certificate accounts	1,329,682	1,221,053
Term certificates of $250,000 or more	119,573	77,550
Term certificates less than $250,000	301,192	262,564
Brokered term certificates	235,106	247,520
Total term certificate accounts	655,871	587,634
Total deposits	$ 1,985,553	$ 1,808,687

Deposits - Schedule of Contract

Deposits - Schedule of Contractual Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Amount
Amount - Within 1 year	$ 379,841
Amount - 1-2 years	141,883
Amount - 2-3 years	84,081
Amount - 3-4 years	21,821
Amount - 4 years and beyond	28,245
Total term certificate accounts	$ 655,871	$ 587,634
Weighted Average Rate
Weighted Average Rate - Within 1 year	1.09%
Weighted Average Rate - 1-2 years	1.60%
Weighted Average Rate - 2-3 years	1.83%
Weighted Average Rate - 3-4 years	1.86%
Weighted Average Rate - 4 years and beyond	2.04%
Weighted Average Rate	1.36%

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
Debt securities		$ 161,668
Available-for-sale marketable equity securities	$ 9,943	43,168
Recurring
Assets
Debt securities		161,668
Available-for-sale marketable equity securities	9,943	43,168
Total assets	19,589	213,986
Liabilities
Interest rate swap agreements	9,385	9,065
Recurring | Level 1
Assets
Debt securities		0
Available-for-sale marketable equity securities	9,943	43,168
Total assets	9,943	43,168
Liabilities
Interest rate swap agreements	0	0
Recurring | Level 2
Assets
Debt securities		161,668
Available-for-sale marketable equity securities	0	0
Total assets	9,292	170,692
Liabilities
Interest rate swap agreements	9,298	8,988
Recurring | Level 3
Assets
Debt securities		0
Available-for-sale marketable equity securities	0	0
Total assets	354	126
Liabilities
Interest rate swap agreements	87	77
Interest rate swap agreements | Level 1
Assets
Interest rate swap agreements	0	0
Liabilities
Interest rate swap agreements	0	0
Interest rate swap agreements | Level 2
Assets
Interest rate swap agreements	9,292	9,024
Liabilities
Interest rate swap agreements	9,298	8,988
Interest rate swap agreements | Level 3
Assets
Interest rate swap agreements	0	0
Liabilities
Interest rate swap agreements	0	0
Interest rate swap agreements | Recurring
Assets
Interest rate swap agreements	9,292	9,024
Liabilities
Interest rate swap agreements	9,298	8,988
Interest rate swap agreements | Recurring | Level 1
Assets
Interest rate swap agreements	0	0
Liabilities
Interest rate swap agreements	0	0
Interest rate swap agreements | Recurring | Level 2
Assets
Interest rate swap agreements	9,292	9,024
Liabilities
Interest rate swap agreements	9,298	8,988
Interest rate swap agreements | Recurring | Level 3
Assets
Interest rate swap agreements	0	0
Liabilities
Interest rate swap agreements	0	0
Forward loan sale commitments | Level 1
Assets
Interest rate swap agreements	0	0
Liabilities
Interest rate swap agreements	0	0
Forward loan sale commitments | Level 2
Assets
Interest rate swap agreements	0	0
Liabilities
Interest rate swap agreements	0	0
Forward loan sale commitments | Level 3
Assets
Interest rate swap agreements	20	15
Liabilities
Interest rate swap agreements	77	74
Forward loan sale commitments | Recurring
Assets
Interest rate swap agreements	20	15
Liabilities
Interest rate swap agreements	77	74
Forward loan sale commitments | Recurring | Level 1
Assets
Interest rate swap agreements	0	0
Liabilities
Interest rate swap agreements	0	0
Forward loan sale commitments | Recurring | Level 2
Assets
Interest rate swap agreements	0	0
Liabilities
Interest rate swap agreements	0	0
Forward loan sale commitments | Recurring | Level 3
Assets
Interest rate swap agreements	20	15
Liabilities
Interest rate swap agreements	77	74
Mortgage loan commitments | Level 1
Assets
Interest rate swap agreements	0	0
Liabilities
Interest rate swap agreements	0	0
Mortgage loan commitments | Level 2
Assets
Interest rate swap agreements	0	0
Liabilities
Interest rate swap agreements	0	0
Mortgage loan commitments | Level 3
Assets
Interest rate swap agreements	334	111
Liabilities
Interest rate swap agreements	10	3
Mortgage loan commitments | Recurring
Assets
Interest rate swap agreements	334	111
Liabilities
Interest rate swap agreements	10	3
Mortgage loan commitments | Recurring | Level 1
Assets
Interest rate swap agreements	0	0
Liabilities
Interest rate swap agreements	0	0
Mortgage loan commitments | Recurring | Level 2
Assets
Interest rate swap agreements	0	0
Liabilities
Interest rate swap agreements	0	0
Mortgage loan commitments | Recurring | Level 3
Assets
Interest rate swap agreements	334	111
Liabilities
Interest rate swap agreements	$ 10	$ 3

Fair Value Measurements - Ass54

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - Nonrecurring - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 11	$ (2,690)	$ 2	$ (2,997)
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0		0		$ 0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0		0		0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 1,365		$ 1,365		$ 136

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Fair Value, Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financial assets:
Securities available for sale	$ 9,943	$ 204,836
Securities held to maturity	302,833	201,027
Estimate of Fair Value Measurement
Financial assets:
Cash and cash equivalents	38,363	30,496
Securities available for sale	9,943	204,836
Securities held to maturity	300,449	198,093
Federal Home Loan Bank stock	9,410	13,352
Loans and loans held for sale	2,064,348	1,903,978
Accrued interest receivable	5,802	6,057
Financial liabilities:
Deposits	1,985,561	1,808,629
Borrowings	128,837	250,648
Carrying Amount
Financial assets:
Cash and cash equivalents	38,363	30,496
Securities available for sale	9,943	204,836
Securities held to maturity	302,833	201,027
Federal Home Loan Bank stock	9,410	13,352
Loans and loans held for sale	2,079,555	1,915,632
Accrued interest receivable	5,802	6,057
Financial liabilities:
Deposits	1,985,553	1,808,687
Borrowings	130,000	251,000
Level 1
Financial assets:
Cash and cash equivalents	38,363	30,496
Securities available for sale	9,943	43,168
Securities held to maturity	0	0
Federal Home Loan Bank stock	0	0
Loans and loans held for sale	0	0
Accrued interest receivable	0	0
Financial liabilities:
Deposits	0	0
Borrowings	0	0
Level 2
Financial assets:
Cash and cash equivalents	0	0
Securities available for sale	0	161,668
Securities held to maturity	300,449	198,093
Federal Home Loan Bank stock	0	0
Loans and loans held for sale	0	0
Accrued interest receivable	0	0
Financial liabilities:
Deposits	0	0
Borrowings	128,837	250,648
Level 3
Financial assets:
Cash and cash equivalents	0	0
Securities available for sale	0	0
Securities held to maturity	0	0
Federal Home Loan Bank stock	9,410	13,352
Loans and loans held for sale	2,064,348	1,903,978
Accrued interest receivable	5,802	6,057
Financial liabilities:
Deposits	1,985,561	1,808,629
Borrowings	0	0
Interest rate swap agreements | Estimate of Fair Value Measurement
On-balance sheet derivative financial instruments:
Derivative assets:	9,292	9,024
Derivative liabilities:	9,298	8,988
Interest rate swap agreements | Carrying Amount
On-balance sheet derivative financial instruments:
Derivative assets:	9,292	9,024
Derivative liabilities:	9,298	8,988
Interest rate swap agreements | Level 1
On-balance sheet derivative financial instruments:
Derivative assets:	0	0
Derivative liabilities:	0	0
Interest rate swap agreements | Level 2
On-balance sheet derivative financial instruments:
Derivative assets:	9,292	9,024
Derivative liabilities:	9,298	8,988
Interest rate swap agreements | Level 3
On-balance sheet derivative financial instruments:
Derivative assets:	0	0
Derivative liabilities:	0	0
Forward loan sale commitments | Estimate of Fair Value Measurement
On-balance sheet derivative financial instruments:
Derivative assets:	20	15
Derivative liabilities:	77	74
Forward loan sale commitments | Carrying Amount
On-balance sheet derivative financial instruments:
Derivative assets:	20	15
Derivative liabilities:	77	74
Forward loan sale commitments | Level 1
On-balance sheet derivative financial instruments:
Derivative assets:	0	0
Derivative liabilities:	0	0
Forward loan sale commitments | Level 2
On-balance sheet derivative financial instruments:
Derivative assets:	0	0
Derivative liabilities:	0	0
Forward loan sale commitments | Level 3
On-balance sheet derivative financial instruments:
Derivative assets:	20	15
Derivative liabilities:	77	74
Mortgage loan commitments | Estimate of Fair Value Measurement
On-balance sheet derivative financial instruments:
Derivative assets:	334	111
Derivative liabilities:	10	3
Mortgage loan commitments | Carrying Amount
On-balance sheet derivative financial instruments:
Derivative assets:	334	111
Derivative liabilities:	10	3
Mortgage loan commitments | Level 1
On-balance sheet derivative financial instruments:
Derivative assets:	0	0
Derivative liabilities:	0	0
Mortgage loan commitments | Level 2
On-balance sheet derivative financial instruments:
Derivative assets:	0	0
Derivative liabilities:	0	0
Mortgage loan commitments | Level 3
On-balance sheet derivative financial instruments:
Derivative assets:	334	111
Derivative liabilities:	$ 10	$ 3

Comprehensive Income - Componen

Comprehensive Income - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income	$ (1,614)	$ (4,069)
Defined Benefit Pension Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized actuarial gain (loss)	(3,215)	(3,482)
Tax effect	1,149	1,270
Accumulated other comprehensive income	(2,066)	(2,212)
Securities Available for Sale | Accumulated Net Investment Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized actuarial gain (loss)	506	(3,087)
Tax effect	(223)	1,007
Accumulated other comprehensive income	283	(2,080)
Securities Held to Maturity | Accumulated Net Investment Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized actuarial gain (loss)	270	337
Tax effect	(101)	(114)
Accumulated other comprehensive income	$ 169	$ 223

Stockholders' Equity - Narrativ

Stockholders' Equity - Narrative (Details)	Jan. 01, 2017	Dec. 31, 2016	Jan. 01, 2015
Equity [Abstract]
Tier one capital conservation buffer common equity capital to risk weighted assets (greater than)	1.25%	0.625%	2.50%

Stockholders' Equity - Minimum

Stockholders' Equity - Minimum Required Capital (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Total capital (to risk weighted assets)
Actual - Total Capital to Risk Weighted Assets	$ 410,703	$ 395,325
Actual - Total Capital to Risk Weighted Assets Ratio (percentage)	20.60%	20.50%
Minimum Capital Requirement - Total Capital	$ 159,395	$ 154,471
Minimum Capital Requirement - Total Capital to Risk Weighted Assets Ratio (percentage)	8.00%	8.00%
Minimum to Be Well Capitalized - Total Capital	$ 199,244	$ 193,089
Minimum to Be Well Capitalized - Total Capital to Risk Weighted Assets Ratio (percentage)	10.00%	10.00%
Tier 1 capital (to risk weighted assets)
Actual - Tier 1 Capital to Risk Weighted Assets	$ 390,455	$ 376,575
Actual - Tier 1 Capital to Risk Weighted Assets Ratio (percentage)	19.60%	19.50%
Minimum Capital Requirement - Tier 1 Capital to Risk Weighted Assets	$ 119,546	$ 115,854
Minimum Capital Requirement - Tier 1 Capital to Risk Weighted Assets Ratio (percentage)	6.00%	6.00%
Minimum to Be Well Capitalized - Tier 1 Capital to Risk Weighted Assets	$ 159,395	$ 154,471
Minimum to Be Well Capitalized - Tier 1 Capital to Risk Weighted Assets Ratio (percentage)	8.00%	8.00%
Common equity Tier 1 (to risk weighted assets)
Actual - Common Equity to Risk Weighted Assets	$ 390,455	$ 376,575
Actual - Common Equity to Risk Weighted Assets Ratio (percentage)	19.60%	19.50%
Minimum Capital Requirement - Common Equity to Risk Weighted Assets	$ 89,660	$ 86,890
Minimum Capital Requirement - Common Equity to Risk Weighted Assets Ratio (percentage)	4.50%	4.50%
Minimum to Be Well Capitalized - Common Equity to Risk Weighted Assets	$ 129,509	$ 125,508
Minimum to Be Well Capitalized - Common Equity to Risk Weighted Assets Ratio (percentage)	6.50%	6.50%
Tier 1 capital (to average assets)
Actual - Tier 1 Capital to Average Assets	$ 390,455	$ 376,575
Actual - Tier 1 Capital to Average Assets Ratio (percentage)	15.50%	16.00%
Minimum Capital Requirement - Tier 1 Capital to Average Assets	$ 100,834	$ 94,166
Minimum Capital Requirement - Tier 1 Capital to Average Assets Ratio (percentage)	4.00%	4.00%
Minimum to Be Well Capitalized - Tier 1 Capital to Average Assets	$ 126,043	$ 117,708
Minimum to Be Well Capitalized - Tier 1 Capital to Average Assets Ratio (percentage)	5.00%	5.00%
Blue Hills Bank
Total capital (to risk weighted assets)
Actual - Total Capital to Risk Weighted Assets	$ 338,168	$ 313,457
Actual - Total Capital to Risk Weighted Assets Ratio (percentage)	17.00%	16.30%
Minimum Capital Requirement - Total Capital	$ 159,135	$ 154,196
Minimum Capital Requirement - Total Capital to Risk Weighted Assets Ratio (percentage)	8.00%	8.00%
Minimum to Be Well Capitalized - Total Capital	$ 198,918	$ 192,745
Minimum to Be Well Capitalized - Total Capital to Risk Weighted Assets Ratio (percentage)	10.00%	10.00%
Tier 1 capital (to risk weighted assets)
Actual - Tier 1 Capital to Risk Weighted Assets	$ 317,920	$ 294,707
Actual - Tier 1 Capital to Risk Weighted Assets Ratio (percentage)	16.00%	15.30%
Minimum Capital Requirement - Tier 1 Capital to Risk Weighted Assets	$ 119,351	$ 115,647
Minimum Capital Requirement - Tier 1 Capital to Risk Weighted Assets Ratio (percentage)	6.00%	6.00%
Minimum to Be Well Capitalized - Tier 1 Capital to Risk Weighted Assets	$ 159,135	$ 154,196
Minimum to Be Well Capitalized - Tier 1 Capital to Risk Weighted Assets Ratio (percentage)	8.00%	8.00%
Common equity Tier 1 (to risk weighted assets)
Actual - Common Equity to Risk Weighted Assets	$ 317,920	$ 294,707
Actual - Common Equity to Risk Weighted Assets Ratio (percentage)	16.00%	15.30%
Minimum Capital Requirement - Common Equity to Risk Weighted Assets	$ 89,513	$ 86,735
Minimum Capital Requirement - Common Equity to Risk Weighted Assets Ratio (percentage)	4.50%	4.50%
Minimum to Be Well Capitalized - Common Equity to Risk Weighted Assets	$ 129,297	$ 125,284
Minimum to Be Well Capitalized - Common Equity to Risk Weighted Assets Ratio (percentage)	6.50%	6.50%
Tier 1 capital (to average assets)
Actual - Tier 1 Capital to Average Assets	$ 317,920	$ 294,707
Actual - Tier 1 Capital to Average Assets Ratio (percentage)	12.60%	12.50%
Minimum Capital Requirement - Tier 1 Capital to Average Assets	$ 100,601	$ 94,099
Minimum Capital Requirement - Tier 1 Capital to Average Assets Ratio (percentage)	4.00%	4.00%
Minimum to Be Well Capitalized - Tier 1 Capital to Average Assets	$ 125,752	$ 117,623
Minimum to Be Well Capitalized - Tier 1 Capital to Average Assets Ratio (percentage)	5.00%	5.00%

Employee Stock Ownership Plan -

Employee Stock Ownership Plan - Employee Stock Ownership Plan (Details) - shares	Sep. 30, 2017	Dec. 31, 2016
Retirement Benefits [Abstract]
Allocated	219,862	149,613
Committed to be allocated	56,778	75,912
Unallocated	1,992,830	2,049,608
Total	2,269,470	2,275,133

Employee Stock Ownership Plan60

Employee Stock Ownership Plan - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Retirement Benefits [Abstract]
ESOP, Number of shares committed to be released annually (shares)	75,912		75,912
Fair Value of unallocated shares	$ 38,300		$ 38,300		$ 38,400
ESOP expense	$ 357	$ 277	$ 1,041	$ 818

Earnings Per Common Share (Deta

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
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net income applicable to common stock	$ 3,841	$ 1,630	$ 15,196	$ 4,655
Average number of common shares outstanding	26,865,148	27,212,837	26,855,598	27,682,795
Less: Average unallocated ESOP shares	(2,002,397)	(2,078,100)	(2,021,219)	(2,096,690)
Less: Average unvested restricted stock awards	(889,635)	(1,005,225)	(888,494)	(1,000,535)
Average number of common shares outstanding used to calculate basic earnings per common share	23,973,116	24,129,512	23,945,885	24,585,570
Average number of common shares outstanding used to calculate diluted earnings per common share	24,510,092	24,307,540	24,377,662	24,708,559
Earnings per common share:
Basic (dollars per share)	$ 0.16	$ 0.07	$ 0.63	$ 0.19
Diluted (dollars per share)	$ 0.16	$ 0.07	$ 0.62	$ 0.19
Antidilutive securities excluded from computation of earnings per share (shares)	407,950	2,461,350	407,950	2,461,350
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect of dilutive share-based compensation awards (in shares)	240,806	0	178,712	0
Unvested Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Effect of dilutive share-based compensation awards (in shares)	296,170	178,028	253,065	122,989

Share-Based Compensation - Narr

Share-Based Compensation - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	2,846,681		2,846,681
Term (years)			10 years
Vesting period (years)			5 years
Share-based compensation expense	$ 574	$ 513	$ 1,752	$ 1,509
Tax benefit related to share-based compensation expense	$ 136	126	$ 426	376
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	1,138,673		1,138,673
Share-based compensation expense	$ 789	712	$ 2,356	2,097
Tax benefit related to share-based compensation expense	$ 277	$ 249	$ 851	$ 738
Granted (shares)			184,695
Vested (shares)			21,873
Nonvested (shares)	893,575		893,575		816,070
Forfeited (shares)			85,317
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares)			40,000
Vested (shares)			6,000
Nonvested (shares)	32,000		32,000
Forfeited (shares)			2,000
Maximum | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term (years)			10 years

Share-Based Compensation - Fair

Share-Based Compensation - Fair Value Assumptions (Details)	9 Months Ended
	Sep. 30, 2017$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (shares) | shares	412,100
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (shares) | shares	412,100
Vesting period (years)	5 years
Term (years)	10 years
Expected life (years)	6 years 6 months
Minimum | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility (percent)	26.91%
Expected dividend yield (percent)	0.71%
Risk free interest rate (percent)	1.87%
Fair value per option (dollars per share) | $ / shares	$ 4.07
Maximum | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term (years)	10 years
Expected volatility (percent)	27.43%
Expected dividend yield (percent)	2.22%
Risk free interest rate (percent)	2.16%
Fair value per option (dollars per share) | $ / shares	$ 5.31

Share-Based Compensation - Stoc

Share-Based Compensation - Stock Option Activity (Details)	9 Months Ended
	Sep. 30, 2017USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Beginning balance (shares)	2,449,670
Granted (shares)	412,100
Forfeited (shares)	(156,650)
Exercised (shares)	(15,660)
Ending balance (shares)	2,689,460
Exercisable at end of period (shares)	491,230
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Beginning balance, weighted average exercise price (dollars per share) | $ / shares	$ 14.06
Granted, weighted average exercise price (dollars per share) | $ / shares	18.22
Forfeited, weighted average exercise price (dollars per share) | $ / shares	14.18
Exercised, weighted average exercise price (dollars per share) | $ / shares	13.88
Ending balance, weighted average exercise price (dollars per share) | $ / shares	14.70
Exercisable at end of period, weighted average exercise price (dollars per share) | $ / shares	$ 14.07
Outstanding, weighted average remaining contractual term (years)	8 years 2 months 27 days
Exercisable at period end, weighted average remaining contractual term (years)	8 years 7 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Exercised, aggregate intrinsic value | $	$ 65,000
Outstanding, aggregate intrinsic value | $	12,115,000
Exercisable, aggregate intrinsic value | $	$ 2,520,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Granted (shares)	412,100
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Unrecognized compensation cost | $	$ 7,542,000
Weighted average remaining recognition period (years)	3 years 4 months 10 days

Share-Based Compensation - Rest

Share-Based Compensation - Restricted Stock Activity (Details) - Restricted Stock $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2017USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Beginning balance (shares) | shares	816,070
Granted (shares) | shares	184,695
Vested (shares) | shares	(21,873)
Forfeited (shares) | shares	(85,317)
Ending balance (shares) | shares	893,575
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Beginning balance, weighted average exercise price (dollars per share) | $ / shares	$ 14.06
Granted, weighted average exercise price (dollars per share) | $ / shares	18.25
Vested, weighted average exercise price (dollars per share) | $ / shares	14
Forfeited, weighted average exercise price (dollars per share) | $ / shares	14.11
Ending balance, weighted average exercise price (dollars per share) | $ / shares	$ 14.92
Unrecognized compensation cost inclusive of directors' fees | $	$ 10,498
Weighted average remaining recognition period (years)	3 years 5 months 1 day