Blue Hills Bancorp (BHBK) 10-Q 6 May 16 2016 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	3 Months Ended
	Mar. 31, 2016	May. 04, 2016
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	Mar. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		27,729,742

Consolidated Balance Sheets (un

Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Assets
Cash and due from banks	$ 13,852	$ 10,932
Short-term investments	18,157	22,366
Total cash and cash equivalents	32,009	33,298
Securities available for sale, at fair value	237,669	231,690
Securities held to maturity, at amortized cost	196,578	200,141
Federal Home Loan Bank stock, at cost	16,137	13,567
Loans held for sale	3,926	12,877
Loans, net of allowance for loan losses of $16,985 at March 31, 2016 and $17,102 at December 31, 2015	1,569,972	1,523,275
Premises and equipment, net	20,099	20,015
Accrued interest receivable	5,588	5,344
Goodwill	9,160	9,160
Core deposit intangible	2,283	2,625
Net deferred tax asset	8,774	10,665
Bank-owned life insurance	31,883	31,626
Other assets	28,150	20,060
Total assets	2,162,228	2,114,343
Deposits:
Non-interest bearing	142,202	153,155
Interest bearing	1,342,403	1,280,694
Total deposits	1,484,605	1,433,849
Short-term borrowings	170,000	205,000
Long-term debt	85,000	55,000
Accrued expenses and other liabilities	29,067	21,665
Total liabilities	1,768,672	1,715,514
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; 27,786,642 and 28,492,732 issued and outstanding at March 31, 2016 and December 31, 2015, respectively)	269	276
Additional paid-in capital	260,041	269,078
Unearned compensation-ESOP	(21,065)	(21,255)
Retained earnings	157,090	155,918
Accumulated other comprehensive loss	(2,779)	(5,188)
Total stockholders' equity	393,556	398,829
Total liabilities and stockholders' equity	$ 2,162,228	$ 2,114,343

Consolidated Balance Sheets (u3

Consolidated Balance Sheets (unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Allowance for Loan Losses	$ 16,985	$ 17,102
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	27,786,642	28,492,732
Common stock, shares outstanding	27,786,642	28,492,732

Consolidated Statements of Inco

Consolidated Statements of Income (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Interest and dividend income:
Interest and fees on loans	$ 13,603	$ 10,427
Interest on securities	2,295	2,136
Dividends	139	100
Other	26	19
Total interest and dividend income	16,063	12,682
Interest expense:
Interest on deposits	2,292	1,763
Interest on borrowings	570	254
Total interest expense	2,862	2,017
Net interest and dividend income	13,201	10,665
Provision (credit) for loan losses	(27)	279
Net interest income, after provision (credit) for loan losses	13,228	10,386
Non-interest income:
Deposit account fees	317	333
Interchange and ATM fees	347	326
Mortgage banking	244	101
Loan level derivative income	639	4
Gains (losses) on sales and calls of available-for-sale securities	(289)	1,318
Gains on calls of held to maturity securities	45	0
Bank-owned life insurance income	257	253
Miscellaneous	(183)	(151)
Total non-interest income	1,377	2,184
Non-interest expense:
Salaries and employee benefits	6,885	5,489
Occupancy and equipment	1,619	1,498
Data processing	761	819
Professional fees	481	632
Advertising	532	500
FDIC deposit insurance	346	292
Directors’ fees	338	124
Amortization of core deposit intangible	342	437
Other general and administrative	764	835
Total non-interest expense	12,068	10,626
Income before income taxes	2,537	1,944
Provision for income taxes	870	638
Net income	$ 1,667	$ 1,306
Earnings per common share:
Basic (dollars per share)	$ 0.07	$ 0.05
Diluted (dollars per share)	$ 0.07	$ 0.05
Weighted average shares outstanding:
Basic (shares)	25,066,086	26,274,738
Diluted (shares)	25,132,441	26,274,738

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income		$ 1,667	$ 1,306
Securities available for sale:
Change in unrealized holding gain		3,415	4,162
Reclassification adjustment for net gains realized in net income	[1]	289	(1,318)
Net change in unrealized gains		3,704	2,844
Tax effect		(1,294)	(1,060)
Net-of-tax amount		2,410	1,784
Securities held to maturity:
Amortization of amounts previously recorded upon transferred from available-for-sale	[2]	(70)	0
Tax effect		25	0
Net-of-tax amount		(45)	0
Defined benefit pension plan:
Reclassification adjustment for net actuarial loss (gain) recognized in net periodic benefit cost	[3]	68	0
Tax effect		(24)	0
Net-of-tax amount		44	0
Other comprehensive income		2,409	1,784
Comprehensive income		$ 4,076	$ 3,090
[1]	Amounts are included in gains (losses) on sales and calls of available-for-sale securities, net, in the consolidated statements of net income. Income tax (benefit) expense associated with the reclassification adjustments for the three months ended March 31, 2016 and 2015 was $(101,000) and $461,000, 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
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Reclassification adjustment for net gains realized in net income, tax	$ (101)	$ 461

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 Income
Beginning balance at Dec. 31, 2014	$ 411,606	$ 285	$ 281,035	$ (22,014)	$ 149,723	$ 2,577
Beginning balance (shares) at Dec. 31, 2014		28,466,813
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	3,090				1,306	1,784
ESOP shares committed to be released	248		59	189
Ending balance at Mar. 31, 2015	414,944	$ 285	281,094	(21,825)	151,029	4,361
Ending balance (shares) at Mar. 31, 2015		28,466,813
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	4,076				1,667	2,409
ESOP shares committed to be released	265		75	190
Common stock dividends paid ($0.02 per common share)	(495)				(495)
Repurchase of common stock (shares)		(730,040)
Repurchase of common stock	(10,314)	$ (7)	(10,307)
Restricted stock grants (shares)		31,450
Restricted stock grants		$ 0	0
Restricted stock awards forfeited (shares)		(7,500)
Restricted stock awards forfeited		$ 0	0
Share-based compensation expense	1,195		1,195
Ending balance at Mar. 31, 2016	$ 393,556	$ 269	$ 260,041	$ (21,065)	$ 157,090	$ (2,779)
Ending balance (shares) at Mar. 31, 2016		27,786,642

Consolidated Statements of Cha8

Consolidated Statements of Changes in Stockholders' Equity (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Common stock paid (dollars per share)	$ 0.02
IPO | Common Stock
Issuance of common stock for initial public offering, expenses		$ 3,565

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net income	$ 1,667	$ 1,306
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision (credit) for loan losses	(27)	279
Net amortization of securities	854	959
Losses (gains) on sales and calls of available-for-sale securities, net	289	(1,318)
Gains on calls of held-to-maturity securities	(45)	0
Proceeds from sale of loans originated for sale	7,415	7,192
Loans originated for sale	(9,621)	(5,795)
Gains on sale of residential loans, net	(234)	(93)
Net amortization (accretion) of deferred loan origination costs and discounts	112	(97)
Depreciation and amortization of premises and equipment	476	430
Amortization of core deposit intangible	342	437
Bank-owned life insurance income	(257)	(253)
ESOP expense	265	248
Deferred tax expense	598	0
Share-based compensation expense	1,195	0
Net change in:
Accrued interest receivable	(244)	(360)
Other assets	(8,090)	(4,628)
Accrued expenses and other liabilities	7,470	(12,096)
Net cash provided by (used in) operating activities	2,165	(13,789)
Activity in securities available for sale:
Purchases	(19,322)	(90,303)
Sales	15,456	68,042
Maturities/calls	250	5,100
Principal paydowns	594	7,261
Activity in securities held to maturity:
Purchases	(9,238)	0
Maturities/calls	6,085	0
Principal paydowns	6,295	0
Loan originations and purchases, net of paydowns	(43,222)	(43,002)
Proceeds from residential portfolio loan sales	7,831	5,573
Net purchases of premises and equipment	(560)	(511)
Purchase of FHLBB stock	(2,570)	0
Net cash used in investing activities	(38,401)	(47,840)
Cash flows from financing activities:
Net change in deposits, excluding brokered deposits	51,065	7,669
Net change in brokered deposits	(309)	825
Net change in short-term borrowings	(35,000)	30,000
Proceeds from long-term debt	30,000	0
Repurchase of common stock	(10,314)	0
Common stock dividends paid	(495)	0
Net cash provided by financing activities	34,947	38,494
Net change in cash and cash equivalents	(1,289)	(23,135)
Cash and cash equivalents at beginning of year	33,298	60,146
Cash and cash equivalents at end of period	32,009	37,011
Supplementary information:
Interest paid	2,803	2,025
Income taxes paid, net of refunds	65	1,340
Portfolio loans transferred to loans held for sale designation	$ 0	$ 4,372

Basis of Presentation and Conso

Basis of Presentation and Consolidation	3 Months Ended
	Mar. 31, 2016
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") and 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, HP Security Corporation and B.H. Security Corporation, which are Massachusetts security corporations, and 1196 Corporation, which holds a restricted stock. 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 8 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, 2015, 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 realizability of deferred tax assets. Loan policies 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 and any deferred fees and costs on originated and 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, or when in the judgment of management, the ultimate collectability of the principal or interest becomes doubtful and to reverse all interest previously accrued 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 or cost recovery method 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. For portfolios for which the Company had no prior loss experience, the national peer group losses for relevant portfolios generally over the years 2008-2015 were used. Charge-off factors are updated at least quarterly and management assesses them quantitatively on a quarterly basis. 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; however, because of the increase in risk exposures new to the Company, 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 extrapolated historical loss experience based on FDIC data for depository institutions with assets of one billion to five billion dollars for periods ranging from 2008-2015, 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 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 1 st or 2 nd 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 and real estate collateral. 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 as evidenced by increased vacancy rates, which in turn, will 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 auto loans. A significant portion of the used auto loan portfolio is comprised of geographically diverse loans originated by and purchased from a third party, who also provides collection services. While this portfolio has generated minimal charge-offs, the provisions for loan losses reflect management’s estimate of inherent losses based on a review of national historical losses of other institutions with similar portfolios. Allocated component The allocated component relates to loans that are on the watch list (partially charged-off loans, non-accruing loans and accruing adversely-rated loans) and 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 greater than or equal to that which would be provided to a borrower with similar credit risk at the time of restructuring. Unallocated component An unallocated component is maintained to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating allocated and general reserves in the portfolio.

Recent Accounting Standards Upd

Recent Accounting Standards Updates	3 Months Ended
	Mar. 31, 2016
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Standards Updates	RECENT ACCOUNTING STANDARDS UPDATES In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ("ASU") No. 2016-09 Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting , to reduce the complexity of certain aspects of the accounting for employee share-based payment transactions. As a result of this ASU, changes applicable to all entities include: Minimum statutory withholding requirements – One of the previous requirements for an award to qualify for equity classification is that an entity cannot partially settle the award in cash in excess of the employer’s minimum statutory withholding requirements. The determination of employees’ minimum statutory withholding amount has been difficult for some entities. Under the ASU, the threshold to qualify for equity classification would permit withholding up to the maximum individual statutory tax rate in the applicable jurisdictions. Also, the ASU provides that cash paid by an employer when directly withholding shares for tax-withholding purposes would be classified as a financing activity on the statement of cash flows. Accounting for forfeitures – Under the new guidance, entities are permitted to make an accounting policy election for the impact of forfeitures on the recognition of expense for share based payment awards. Forfeitures can be estimated, as required today, or recognized when they occur. Estimates of forfeitures will still be required in certain circumstances, such as at the time of modification of an award or issuance of a replacement award in a business combination. If elected, the change to recognize forfeitures when they occur needs to be adopted using a modified retrospective approach, with a cumulative effect adjustment recorded to opening retained earnings. Accounting for income taxes – Currently, excess tax benefits are recognized in additional paid-in capital. Tax deficiencies are recognized either as an offset to accumulated excess tax benefits, if any, or in the income statement. Per the ASU, all excess tax benefits and tax deficiencies would be recognized as income tax expense or benefit in the income statement. An entity also would recognize excess tax benefits regardless of whether the benefit reduces taxes payable in the current period. Further, excess tax benefits would not be separated from other income tax cash flows and thus would be classified along with other cash flows as an operating activity. The ASU is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Early adoption is permitted for any organization in any interim or annual period. Management is currently evaluating the impact to the consolidated financial statements of adopting this Update.

Securities

Securities	3 Months Ended
	Mar. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Securities	SECURITIES The amortized cost and estimated fair value of securities available for sale, with gross unrealized gains and losses, follows: March 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 $ 12,596 $ 14 $ (102 ) $ 12,508 Other asset-backed 10,054 1 (282 ) 9,773 Total mortgage- and other asset-backed securities 22,650 15 (384 ) 22,281 State and political subdivisions 16,736 429 — 17,165 Financial services: Banks 17,629 236 (20 ) 17,845 Diversified financials 24,657 697 (66 ) 25,288 Insurance and REITs 19,072 136 (175 ) 19,033 Total financial services 61,358 1,069 (261 ) 62,166 Other corporate: Industrials 54,894 1,034 (708 ) 55,220 Utilities 33,416 301 (854 ) 32,863 Total other corporate 88,310 1,335 (1,562 ) 88,083 Total debt securities 189,054 2,848 (2,207 ) 189,695 Marketable equity securities: Mutual funds: Global equity 5,000 392 — 5,392 Domestic community 3,216 109 (8 ) 3,317 Global asset allocation 42,396 1 (3,132 ) 39,265 Total marketable equity securities 50,612 502 (3,140 ) 47,974 Total securities available for sale $ 239,666 $ 3,350 $ (5,347 ) $ 237,669 March 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Securities Held to Maturity: Debt securities: U.S. Treasury $ 624 $ 2 $ — $ 626 Government-sponsored enterprises 22,188 179 — 22,367 Government-sponsored mortgage-backed and collateralized mortgage obligations 158,128 1,289 (35 ) 159,382 SBA asset-backed securities 15,638 45 (49 ) 15,634 Total securities held to maturity $ 196,578 $ 1,515 $ (84 ) $ 198,009 December 31, 2015 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 $ 13,126 $ — $ (195 ) $ 12,931 Other asset-backed securities 11,395 — (142 ) 11,253 Total other mortgage- and asset-backed securities 24,521 — (337 ) 24,184 State and political subdivisions 16,016 354 (55 ) 16,315 Financial services: Banks 18,813 138 (90 ) 18,861 Diversified financials 23,124 349 (173 ) 23,300 Insurance and REITs 16,883 1 (282 ) 16,602 Total financial services 58,820 488 (545 ) 58,763 Other corporate: Industrials 55,470 306 (1,244 ) 54,532 Utilities 31,952 7 (1,639 ) 30,320 Total other corporate 87,422 313 (2,883 ) 84,852 Total debt securities 186,779 1,155 (3,820 ) 184,114 Marketable equity securities: Mutual funds: Global equity 5,000 388 — 5,388 Domestic community 3,216 70 (13 ) 3,273 Global asset allocation 42,396 3 (3,484 ) 38,915 Total marketable equity securities 50,612 461 (3,497 ) 47,576 Total securities available for sale $ 237,391 $ 1,616 $ (7,317 ) $ 231,690 December 31, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Securities Held to Maturity: Debt securities: U.S. Treasury $ 636 $ — $ (2 ) $ 634 Government-sponsored enterprises 28,256 94 (126 ) 28,224 Government-sponsored mortgage-backed and collateralized mortgage obligations 155,232 10 (832 ) 154,410 SBA asset-backed securities 16,017 — (59 ) 15,958 Total securities held to maturity $ 200,141 $ 104 $ (1,019 ) $ 199,226 During the third quarter of 2015, approximately $196.3 million of securities available for sale, with net unrealized gains of $666,000 , were reclassified to held-to-maturity designation. Held-to-maturity investments are investments that management has the positive intent and ability to hold to maturity. If a security is reclassified from available for sale to held to maturity, the fair value at the time of transfer becomes the security's new cost basis. The unrealized holding gain at the transfer date continues to be reported in other comprehensive income and is amortized over the security's remaining life as an adjustment of yield in a manner similar to a premium or discount. At March 31, 2016 , there are $501,000 of net holding gains remaining in accumulated other comprehensive loss. The amortized cost and estimated fair value of debt securities by contractual maturity at March 31, 2016 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. Available for Sale Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value (In thousands) Within 1 year $ 7,670 $ 7,682 $ 5,629 $ 5,635 After 1 year through 5 years 84,677 85,858 11,201 11,229 After 5 years through 10 years 65,390 65,115 5,982 6,129 After 10 years 8,667 8,759 — — 166,404 167,414 22,812 22,993 Mortgage- and asset-backed securities and collateralized mortgage obligations 22,650 22,281 173,766 175,016 $ 189,054 $ 189,695 $ 196,578 $ 198,009 The Company continually reviews investment 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 debt 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. For the three months ended March 31, 2016 and 2015 , proceeds from sales of securities available for sale amounted to $15.5 million and $68.0 million , respectively. Gross realized gains amounted to $133,000 and $1.3 million , respectively, and gross realized losses amounted to $422,000 and $35,000 , 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: March 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 $ (33 ) $ 3,410 $ (69 ) $ 7,320 Other asset-backed (77 ) 4,128 (205 ) 3,704 Total mortgage- and other asset-backed securities (110 ) 7,538 (274 ) 11,024 Financial services: Banks (20 ) 5,345 — — Diversified financials (66 ) 1,779 — — Insurance and REITs (116 ) 7,916 (59 ) 1,004 Total financial services (202 ) 15,040 (59 ) 1,004 Other corporate: Industrials (479 ) 12,959 (229 ) 2,152 Utilities (809 ) 17,944 (45 ) 760 Total other corporate (1,288 ) 30,903 (274 ) 2,912 Total debt securities (1,600 ) 53,481 (607 ) 14,940 Marketable equity securities: Mutual funds: Domestic community — — (8 ) 458 Global asset allocation (3,132 ) 38,901 — — Total marketable equity securities (3,132 ) 38,901 (8 ) 458 Total temporarily impaired available-for-sale securities $ (4,732 ) $ 92,382 $ (615 ) $ 15,398 Securities Held to Maturity: Debt securities: Government-sponsored mortgage-backed and collateralized mortgage obligations $ (35 ) $ 12,240 $ — $ — SBA asset-backed securities (49 ) 5,234 — — Total temporarily impaired held-to-maturity securities $ (84 ) $ 17,474 $ — $ — At March 31, 2016 , multiple debt securities have unrealized losses with aggregate depreciation of 3.3% 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 because the Company does not intend to sell the securities and it is more likely than not that the Company will not be required to sell the securities before recovery of their amortized cost bases, which may be maturity, the Company does not consider these securities to be other-than-temporarily impaired at March 31, 2016 . At March 31, 2016 , the Company had several mutual funds with unrealized losses of $3.1 million , or 8.7% 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, 2015 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: Other mortgage- and asset-backed securities: Privately issued commercial mortgage- backed securities $ (84 ) $ 5,166 $ (111 ) $ 7,765 Other asset-backed securities (142 ) 11,253 — — Total other mortgage- and asset-backed securities (226 ) 16,419 (111 ) 7,765 State and political subdivisions (55 ) 3,324 — Financial services: Banks (90 ) 14,070 — — Diversified financials (173 ) 15,397 — — Insurance and REITs (282 ) 14,487 — — Total financial services (545 ) 43,954 — — Other corporate: Industrials (957 ) 43,848 (287 ) 395 Utilities (1,387 ) 25,353 (252 ) 1,618 Total other corporate (2,344 ) 69,201 (539 ) 2,013 Total debt securities (3,170 ) 132,898 (650 ) 9,778 Marketable equity securities: Mutual funds: Domestic community — — (13 ) 453 Global asset allocation (3,484 ) 36,609 — — Total marketable equity securities (3,484 ) 36,609 (13 ) 453 Total temporarily impaired securities $ (6,654 ) $ 169,507 $ (663 ) $ 10,231 Securities Held to Maturity: Debt securities: U.S. Treasury $ (2 ) $ 634 $ — $ — Government-sponsored enterprises (126 ) 14,084 — — Government-sponsored mortgage-backed and collateralized mortgage obligations (832 ) 144,820 — — SBA asset-backed securities (59 ) 15,958 — — Total temporarily impaired held-to-maturity securities $ (1,019 ) $ 175,496 $ — $ —

Loans and The Allowance for Loa

Loans and The Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2016
Receivables [Abstract]
Loans and The Allowance for Loan Loss	LOANS AND THE ALLOWANCE FOR LOAN LOSSES A summary of the balances of loans follows: March 31, December 31, 2016 2015 (In thousands) Real estate: 1-4 family residential $ 619,528 $ 599,938 Home equity 80,291 77,399 Commercial real estate 587,504 561,203 Construction 92,884 79,773 1,380,207 1,318,313 Commercial business 169,112 182,677 Consumer 36,214 38,186 Total loans 1,585,533 1,539,176 Allowance for loan losses (16,985 ) (17,102 ) Discount and fair value adjustments on purchased loans (1,941 ) (1,959 ) Deferred loan costs and fees, net 3,365 3,160 Loans, net $ 1,569,972 $ 1,523,275 Activity in the allowance for loan losses for the three months ended March 31, 2016 and 2015 , and allocation of the allowance to loan segments as of March 31, 2016 and December 31, 2015 , follows: 1-4 Family Residential Home Equity Commercial Real Estate Construction Commercial Business Consumer Unallocated Total (In thousands) Three Months Ended March 31, 2016 Allowance at December 31, 2015 $ 3,916 $ 636 $ 7,147 $ 1,364 $ 2,839 $ 772 $ 428 $ 17,102 Provision (credit) for loan losses (251 ) (19 ) 191 258 (148 ) (55 ) (3 ) (27 ) Loans charged-off — — — — (105 ) (18 ) — (123 ) Recoveries — — — — 33 — — 33 Allowance at March 31, 2016 $ 3,665 $ 617 $ 7,338 $ 1,622 $ 2,619 $ 699 $ 425 $ 16,985 Three Months Ended March 31, 2015 Allowance at December 31, 2014 $ 3,222 $ 340 $ 3,551 $ 1,056 $ 3,410 $ 736 $ 658 $ 12,973 Provision (credit) for loan losses (7 ) 40 171 120 (78 ) 25 8 279 Loans charged-off — — — — — (14 ) — (14 ) Recoveries — — — — — — — — Allowance at March 31, 2015 $ 3,215 $ 380 $ 3,722 $ 1,176 $ 3,332 $ 747 $ 666 $ 13,238 Additional information pertaining to the allowance for loan losses at March 31, 2016 and December 31, 2015 is as follows: 1-4 Family Home Commercial Construction Commercial Consumer Unallocated Total (In thousands) March 31, 2016 Allowance related to impaired loans $ — $ — $ 47 $ — $ — $ — $ — $ 47 Allowance related to non-impaired loans 3,665 617 7,291 1,622 2,619 699 425 16,938 Total allowance for loan losses $ 3,665 $ 617 $ 7,338 $ 1,622 $ 2,619 $ 699 $ 425 $ 16,985 Impaired loans $ 6,527 $ 311 $ 4,317 $ — $ — $ 208 $ — $ 11,363 Non-impaired loans 613,001 79,980 583,187 92,884 169,112 36,006 — 1,574,170 Total loans $ 619,528 $ 80,291 $ 587,504 $ 92,884 $ 169,112 $ 36,214 $ — $ 1,585,533 December 31, 2015 Allowance related to impaired loans $ — $ — $ 384 $ — $ 10 $ 10 $ — $ 404 Allowance related to non-impaired loans 3,916 636 6,763 1,364 2,829 762 428 16,698 Total allowance for loan losses $ 3,916 $ 636 $ 7,147 $ 1,364 $ 2,839 $ 772 $ 428 $ 17,102 Impaired loans $ 6,114 $ 270 $ 4,631 $ — $ 10 $ 145 $ — $ 11,170 Non-impaired loans 593,824 77,129 556,572 79,773 182,667 38,041 — 1,528,006 Total loans $ 599,938 $ 77,399 $ 561,203 $ 79,773 $ 182,677 $ 38,186 $ — $ 1,539,176 The following is a summary of past due and non-accrual loans, by loan class, at March 31, 2016 and December 31, 2015 : 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) March 31, 2016 Real estate: 1-4 family residential $ 2,330 $ 87 $ 906 $ 3,323 $ 6,105 Home equity 1,503 185 182 1,870 311 Commercial real estate 13,740 — — 13,740 4,317 Commercial business 20 9 — 29 — Consumer 137 105 109 351 208 Total $ 17,730 $ 386 $ 1,197 $ 19,313 $ 10,941 December 31, 2015 Real estate: 1-4 family residential $ 2,287 $ — $ 990 $ 3,277 $ 5,688 Home equity 1,031 19 176 1,226 270 Commercial real estate — 1,249 — 1,249 $ 4,631 Commercial business 23 — — 23 $ 10 Consumer 3 80 120 203 $ 145 Total $ 3,344 $ 1,348 $ 1,286 $ 5,978 $ 10,744 There were no loans past due 90 days or more and still accruing interest at March 31, 2016 and December 31, 2015 . 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 March 31, 2016 (In thousands) Impaired loans without a valuation allowance: Real estate: 1-4 family residential $ 6,527 $ 7,237 $ — Home equity 311 470 — Consumer 208 224 — Total 7,046 7,931 — Impaired loans with a valuation allowance: Commercial real estate 4,317 4,359 47 Total 4,317 4,359 47 Total impaired loans $ 11,363 $ 12,290 $ 47 December 31, 2015 Impaired loans without a valuation allowance: Real estate: 1-4 family residential $ 6,114 $ 6,824 $ — Home equity 270 425 — Consumer 35 39 — Total 6,419 7,288 — Impaired loans with a valuation allowance: Commercial real estate 4,631 4,631 384 Commercial business 10 11 10 Consumer 110 110 10 Total 4,751 4,752 404 Total impaired loans $ 11,170 $ 12,040 $ 404 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 March 31, 2016 (In thousands) Impaired loans without a valuation allowance: Real estate: 1-4 family residential $ 6,321 $ 73 Home equity 290 4 Consumer 177 2 Impaired loans with a valuation allowance: Commercial real estate 4,474 42 Commercial 5 — Total $ 11,267 $ 121 Three Months Ended March 31, 2015 Impaired loans without a valuation allowance: Real estate: 1-4 family residential $ 4,557 $ 67 Home Equity 578 6 Consumer 28 — Total $ 5,163 $ 73 No additional funds are committed to be advanced in connection with impaired loans. There were no troubled debt restructurings recorded during the three months ended March 31, 2016. There were two troubled debt restructurings recorded during the three months ended March 31, 2015 , consisting of two residential real estate loans that had pre-modification recorded investments totaling $477,000 and post modification recorded investments of $492,000 . Such loans were modified to capitalize past due interest. There were no troubled debt restructurings that defaulted during the three months ended March 31, 2016 and 2015, for which default was within one year of the restructure date. 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 March 31, 2016 and December 31, 2015 : 1-4 Family Residential Home Equity Commercial Real Estate Construction Commercial Business Consumer Total Loans (In thousands) March 31, 2016 Loans rated 1 - 6 $ 1,938 $ 330 $ 573,402 $ 92,884 $ 162,779 $ 5 $ 831,338 Loans rated 7 4,432 339 8,224 — 3,300 — 16,295 Loans rated 8 2,031 144 5,878 — 3,033 133 11,219 Loans rated 9 699 — — — — — 699 Loans rated 10 — — — — — — — Loans not rated 610,428 79,478 — — — 36,076 725,982 $ 619,528 $ 80,291 $ 587,504 $ 92,884 $ 169,112 $ 36,214 $ 1,585,533 December 31, 2015 Loans rated 1 - 6 $ 1,950 $ 465 $ 548,360 $ 79,773 $ 181,792 $ 6 $ 812,346 Loans rated 7 4,461 321 7,765 — 874 — 13,421 Loans rated 8 1,592 144 5,078 — — 149 6,963 Loans rated 9 701 — — — 11 — 712 Loans rated 10 — — — — — — — Loans not rated 591,234 76,469 — — — 38,031 705,734 $ 599,938 $ 77,399 $ 561,203 $ 79,773 $ 182,677 $ 38,186 $ 1,539,176

Interest Rate Swap Agreements

Interest Rate Swap Agreements	3 Months Ended
	Mar. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Interest Rate Swap Agreements	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 March 31, 2016 and December 31, 2015 . Derivative Gains Derivative Losses Notional Amount Fair Value Notional Amount Fair Value (In thousands) March 31, 2016 Economic hedges: Commercial loan level interest rate swap agreements $ 323,120 $ 16,537 $ 323,120 $ 17,305 Other contracts 16,221 36 13,729 116 Total derivatives $ 339,341 $ 16,573 $ 336,849 $ 17,421 December 31, 2015 Economic hedges: Commercial loan level interest rate swap agreements $ 282,546 $ 7,956 $ 282,546 $ 8,411 Other contracts 8,300 6 12,698 78 Total derivatives $ 290,846 $ 7,962 $ 295,244 $ 8,489 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.

Deposits

Deposits	3 Months Ended
	Mar. 31, 2016
Banking and Thrift [Abstract]
Deposits	DEPOSITS A summary of deposit balances, by type, is as follows: March 31, December 31, 2016 2015 (In thousands) NOW and demand $ 285,391 $ 288,143 Regular savings 283,586 287,344 Money market 408,591 368,050 Brokered money market 46,673 41,807 Total non-certificate accounts 1,024,241 985,344 Term certificates of $250,000 or more 72,318 65,364 Term certificates less than $250,000 256,694 246,614 Brokered term certificates 131,352 136,527 Total certificate accounts 460,364 448,505 Total deposits $ 1,484,605 $ 1,433,849 At March 31, 2016 , the scheduled maturities of term certificate accounts, including brokered deposits, are as follows: Amount Weighted Average Rate (Dollars in thousands) Within 1 year $ 245,014 0.66 % 1-2 years 80,638 1.13 2-3 years 50,644 1.47 3-4 years 61,092 1.97 4 years and beyond 22,976 1.84 $ 460,364 1.06 %

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2016
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. Derivative instruments : 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. 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 March 31, 2016 and December 31, 2015 , 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) March 31, 2016 Assets Securities available for sale: Debt securities $ — $ 189,695 $ — $ 189,695 Marketable equity securities 47,974 — — 47,974 Derivative assets — 16,573 — 16,573 Total assets $ 47,974 $ 206,268 $ — $ 254,242 Liabilities Derivative liabilities $ — $ 17,421 $ — $ 17,421 December 31, 2015 Assets Securities available for sale: Debt securities $ — $ 184,114 $ — $ 184,114 Marketable equity securities 47,576 — — 47,576 Derivative assets — 7,962 — 7,962 Total assets $ 47,576 $ 192,076 $ — $ 239,652 Liabilities Derivative liabilities $ — $ 8,489 $ — $ 8,489 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 nonrecurring 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. At March 31, 2016 , there were four impaired loans measured at fair value on a non-recurring basis using level 3 inputs, in the amount of $4.5 million , with net gains on these loans for the three months ended March 31, 2016 amounting to $221,000 . At March 31, 2015, there were no assets measured at fair value on a non-recurring basis. At March 31, 2016 and December 31, 2015 there were no liabilities measured at fair value on a non-recurring basis. 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 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) March 31, 2016 Financial assets: Cash and cash equivalents $ 32,009 $ 32,009 $ — $ — $ 32,009 Securities available for sale 237,669 47,974 189,695 — 237,669 Securities held to maturity 196,578 — 198,542 — 198,009 Federal Home Loan Bank stock 16,137 — — 16,137 16,137 Loans and loans held for sale 1,573,898 — — 1,580,426 1,580,426 Accrued interest receivable 5,588 — — 5,588 5,588 Financial liabilities: Deposits 1,484,605 — — 1,487,494 1,487,494 Borrowings 255,000 — 254,733 — 254,733 On-balance sheet derivative financial instruments: Interest rate swap agreements: Assets 16,573 — 16,573 — 16,573 Liabilities 17,421 — 17,421 — 17,421 December 31, 2015 Financial assets: Cash and cash equivalents $ 33,298 $ 33,298 $ — $ — $ 33,298 Securities available for sale 231,690 47,576 184,114 — 231,690 Securities held to maturity 200,141 634 198,592 — 199,226 Federal Home Loan Bank stock 13,567 — — 13,567 13,567 Loans and loans held for sale 1,536,152 — — 1,538,809 1,538,809 Accrued interest receivable 5,344 — — 5,344 5,344 Financial liabilities: Deposits 1,433,849 — — 1,434,179 1,434,179 Borrowings 260,000 — 260,244 — 260,244 On-balance sheet derivative financial instruments: Interest rate swap agreements: Assets 7,962 — 7,962 — 7,962 Liabilities 8,489 — 8,489 — 8,489

Comprehensive Income

Comprehensive Income	3 Months Ended
	Mar. 31, 2016
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 income (loss), included in stockholders' equity, are as follows: March 31, December 31, 2016 2015 (In thousands) Securities available for sale: Net unrealized loss $ (1,997 ) $ (5,701 ) Tax effect 651 1,945 Net-of-tax amount (1,346 ) (3,756 ) Securities held to maturity: Net unrealized gain on transferred securities 501 571 Tax effect (172 ) (197 ) Net-of-tax amount 329 374 Defined benefit pension plan: Unrecognized net actuarial loss (2,790 ) (2,858 ) Tax effect 1,028 1,052 Net-of-tax amount (1,762 ) (1,806 ) $ (2,779 ) $ (5,188 ) Changes in accumulated other comprehensive loss, by component, follow: Three Months Ended March 31, 2016 Securities Available for Sale Securities Held to Maturity Defined Benefit Pension Plan Total (In thousands) Balance at December 31, 2015 $ (3,756 ) 374 $ (1,806 ) $ (5,188 ) Other comprehensive income before reclassification adjustments 3,415 — — 3,415 Reclassification adjustments: Net realized losses 289 — — 289 Amortization of actuarial losses — — 68 68 Amortization of amounts previously recorded upon transfer from available-for-sale — (70 ) — (70 ) Tax effects (1,294 ) 25 (24 ) (1,293 ) Net current-period other comprehensive income 2,410 (45 ) 44 2,409 Balance at March 31, 2016 $ (1,346 ) $ 329 $ (1,762 ) $ (2,779 ) Three Months Ended March 31, 2015 Securities Available for Sale Securities Held to Maturity Defined Benefit Pension Plan Total (In thousands) Balance at December 31, 2014 $ 3,392 $ — $ (815 ) $ 2,577 Other comprehensive income before reclassification adjustments 4,162 — — 4,162 Reclassification adjustments: Net realized gains (1,318 ) — — (1,318 ) Tax effects (1,060 ) — — (1,060 ) Net current-period other comprehensive income 1,784 — — 1,784 Balance at March 31, 2015 $ 5,176 $ — $ (815 ) $ 4,361

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2016
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. Effective January 1, 2015, federal banking regulations changed with regard to minimum capital requirements for community banking institutions. The regulations include a new minimum ratio of common equity Tier 1 capital to risk-weighted assets of 4.5% , raise the minimum ratio of Tier 1 capital to risk-weighted assets from 4% to 6% and includes a minimum leverage ratio of 4% for all banking organizations. 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 will be phased in over three years, which began on January 1, 2016. Also, certain new deductions from and adjustments to regulatory capital will be phased in over several years. Management believes that the Company's capital levels 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 March 31, 2016 . As of March 31, 2016 , 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 March 31, 2016 and December 31, 2015 , 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 March 31, 2016 and December 31, 2015 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.: March 31, 2016 Total capital (to risk weighted assets) $ 398,204 23.1 % $ 138,160 8.0 % 172,670 10.0 % Tier 1 capital (to risk weighted assets) 381,219 22.1 103,620 6.0 138,160 8.0 Common equity Tier 1 (to risk weighted assets) 381,219 22.1 77,715 4.5 112,255 6.5 Tier 1 capital (to average assets) 381,219 17.9 85,249 4.0 106,561 5.0 December 31, 2015 Total capital (to risk weighted assets) $ 407,444 24.8 % $ 131,231 8.0 % 164,039 10.0 % Tier 1 capital (to risk weighted assets) 390,342 23.8 98,423 6.0 131,231 8.0 Common equity Tier 1 (to risk weighted assets) 390,342 23.8 73,818 4.5 106,625 6.5 Tier 1 capital (to average assets) 390,342 19.6 79,658 4.0 99,573 5.0 Blue Hills Bank: March 31, 2016 Total capital (to risk weighted assets) $ 299,539 17.4 % $ 137,904 8.0 % $ 172,380 10.0 % Tier 1 capital (to risk weighted assets) 282,554 16.4 103,428 6.0 137,903 8.0 Common equity Tier 1 (to risk weighted assets) 282,554 16.4 77,571 4.5 112,047 6.5 Tier 1 capital (to average assets) 282,554 13.3 85,218 4.0 106,522 5.0 December 31, 2015 Total capital (to risk weighted assets) $ 296,309 18.1 % $ 130,832 8.0 % $ 163,540 10.0 % Tier 1 capital (to risk weighted assets) 279,207 17.1 98,124 6.0 130,832 8.0 Common equity Tier 1 (to risk weighted assets) 279,207 17.1 73,593 N/A 106,301 6.5 Tier 1 capital (to average assets) 279,207 14.0 79,867 4.0 99,608 5.0

Employee Stock Ownership Plan

Employee Stock Ownership Plan	3 Months Ended
	Mar. 31, 2016
Compensation and Retirement Disclosure [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: March 31, 2016 December 31, 2015 Allocated 151,824 75,912 Committed to be allocated 18,925 75,912 Unallocated 2,105,921 2,124,846 2,276,670 2,276,670 The fair value of unallocated shares was approximately $28.8 million and $32.5 million at March 31, 2016 and December 31, 2015 , respectively. Total compensation expense recognized in connection with the ESOP for the three months ended March 31, 2016 and March 31, 2015 was $265,000 and $248,000 , respectively.

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Earnings Per Common Share	EARNINGS PER COMMON SHARE Basic earnings per 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. There were no potentially dilutive common stock equivalents as of March 31, 2015 . Three Months Ended March 31, 2016 March 31, 2015 (In thousands, except share amounts) Net income applicable to common stock $ 1,667 $ 1,306 Average number of common shares outstanding 27,181,469 28,466,813 Less: Average unallocated ESOP shares (2,115,383 ) (2,192,075 ) Average number of common shares outstanding used to calculate basic earnings per common share 25,066,086 26,274,738 Effect of dilutive unvested restricted stock awards 66,355 — Average number of common shares outstanding used to calculate diluted earnings per common share 25,132,441 26,274,738 Earnings per common share: Basic $ 0.07 $ 0.05 Diluted $ 0.07 $ 0.05 Options for 2,479,000 shares were not included in the computation of diluted earnings per share because to do so would have been antidilutive for the period ended March 31, 2016 .

Share-Based Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2016
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. Under the Equity Plan, the option exercise price is based upon the closing value of the stock on the date of grant. Stock option awards granted to date under the Equity Plan expire in 2025. 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 commons stock during the first three months of 2016 . Date of grant February 29, 2016 Options granted 55,000 Vesting period (years) 5 Expiration date February 28, 2026 Expected volatility 28.47 % Expected life (years) 6.5 Expected dividend yield 0.58 % Risk free interest rate 1.38 % Fair value per option $ 4.02 A summary of the status of the Company's stock option grants for the quarter ended March 31, 2016 , is presented in the table below: Stock Option Awards Weighted Average Exercise Price Weighted Average Remaining Contractual Term (years) Aggregate Intrinsic Value Balance at December 31, 2015 2,434,000 $ 14.07 Granted 55,000 13.80 Forfeited (10,000 ) 14.07 Balance at March 31, 2016 2,479,000 $ 14.06 9.53 $ — Outstanding and expected to vest at March 31, 2016 2,454,401 $ 14.06 9.53 $ — Exercisable at March 31, 2016 — $ — $ — Unrecognized compensation cost $9,489,000 Weighted average remaining recognition period (years) 4.53 For the quarter ended March 31, 2016 , share-based compensation expense applicable to the stock options was $511,000 , and the recognized tax benefit related to this expense was $125,000 . There was no share-based compensation expense related to stock options for the quarter ended March 31, 2015 . 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 in 2016 , 40,000 are performance based. The following table presents the activity in non-vested stock awards under the Equity Plan for the quarter ended March 31, 2016 : Outstanding Restricted Stock Awards Weighted Average Grant Price Nonvested stock awards at December 31, 2015 983,175 $ 14.07 Granted 31,450 13.83 Forfeited 7,500 14.07 Nonvested stock awards at March 31, 2016 1,007,125 $ 14.06 Unrecognized compensation cost inclusive of directors' fees $12,828,000 Weighted average remaining recognition period (years) 4.54 For the quarter ended March 31, 2016 , share-based compensation expense applicable to restricted stock awards was $ 684,000 , and the recognized tax benefit related to this expense was $243,000 . There was no share-based compensation expense related to restricted stock awards for the quarter ended March 31, 2015 .

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS On April 12, 2016 the Company signed a lease for the new corporate headquarters in Norwood, with an anticipated opening in late 2016.

Basis of Presentation and Con23

Basis of Presentation and Consolidation (Policies)	3 Months Ended
	Mar. 31, 2016
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") and 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, HP Security Corporation and B.H. Security Corporation, which are Massachusetts security corporations, and 1196 Corporation, which holds a restricted stock. 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 8 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, 2015, 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 realizability of deferred tax assets.
Loans	Loan policies 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 and any deferred fees and costs on originated and 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, or when in the judgment of management, the ultimate collectability of the principal or interest becomes doubtful and to reverse all interest previously accrued 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 or cost recovery method 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. For portfolios for which the Company had no prior loss experience, the national peer group losses for relevant portfolios generally over the years 2008-2015 were used. Charge-off factors are updated at least quarterly and management assesses them quantitatively on a quarterly basis. 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; however, because of the increase in risk exposures new to the Company, 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 extrapolated historical loss experience based on FDIC data for depository institutions with assets of one billion to five billion dollars for periods ranging from 2008-2015, 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 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 1 st or 2 nd 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 and real estate collateral. 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 as evidenced by increased vacancy rates, which in turn, will 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 auto loans. A significant portion of the used auto loan portfolio is comprised of geographically diverse loans originated by and purchased from a third party, who also provides collection services. While this portfolio has generated minimal charge-offs, the provisions for loan losses reflect management’s estimate of inherent losses based on a review of national historical losses of other institutions with similar portfolios. Allocated component The allocated component relates to loans that are on the watch list (partially charged-off loans, non-accruing loans and accruing adversely-rated loans) and 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 greater than or equal to that which would be provided to a borrower with similar credit risk at the time of restructuring. Unallocated component An unallocated component is maintained to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating allocated and general reserves in the portfolio.
Recent Accounting Standards Updates	RECENT ACCOUNTING STANDARDS UPDATES In March 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ("ASU") No. 2016-09 Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting , to reduce the complexity of certain aspects of the accounting for employee share-based payment transactions. As a result of this ASU, changes applicable to all entities include: Minimum statutory withholding requirements – One of the previous requirements for an award to qualify for equity classification is that an entity cannot partially settle the award in cash in excess of the employer’s minimum statutory withholding requirements. The determination of employees’ minimum statutory withholding amount has been difficult for some entities. Under the ASU, the threshold to qualify for equity classification would permit withholding up to the maximum individual statutory tax rate in the applicable jurisdictions. Also, the ASU provides that cash paid by an employer when directly withholding shares for tax-withholding purposes would be classified as a financing activity on the statement of cash flows. Accounting for forfeitures – Under the new guidance, entities are permitted to make an accounting policy election for the impact of forfeitures on the recognition of expense for share based payment awards. Forfeitures can be estimated, as required today, or recognized when they occur. Estimates of forfeitures will still be required in certain circumstances, such as at the time of modification of an award or issuance of a replacement award in a business combination. If elected, the change to recognize forfeitures when they occur needs to be adopted using a modified retrospective approach, with a cumulative effect adjustment recorded to opening retained earnings. Accounting for income taxes – Currently, excess tax benefits are recognized in additional paid-in capital. Tax deficiencies are recognized either as an offset to accumulated excess tax benefits, if any, or in the income statement. Per the ASU, all excess tax benefits and tax deficiencies would be recognized as income tax expense or benefit in the income statement. An entity also would recognize excess tax benefits regardless of whether the benefit reduces taxes payable in the current period. Further, excess tax benefits would not be separated from other income tax cash flows and thus would be classified along with other cash flows as an operating activity. The ASU is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Early adoption is permitted for any organization in any interim or annual period. Management is currently evaluating the impact to the consolidated financial statements of adopting this Update.

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities	The amortized cost and estimated fair value of securities available for sale, with gross unrealized gains and losses, follows: March 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 $ 12,596 $ 14 $ (102 ) $ 12,508 Other asset-backed 10,054 1 (282 ) 9,773 Total mortgage- and other asset-backed securities 22,650 15 (384 ) 22,281 State and political subdivisions 16,736 429 — 17,165 Financial services: Banks 17,629 236 (20 ) 17,845 Diversified financials 24,657 697 (66 ) 25,288 Insurance and REITs 19,072 136 (175 ) 19,033 Total financial services 61,358 1,069 (261 ) 62,166 Other corporate: Industrials 54,894 1,034 (708 ) 55,220 Utilities 33,416 301 (854 ) 32,863 Total other corporate 88,310 1,335 (1,562 ) 88,083 Total debt securities 189,054 2,848 (2,207 ) 189,695 Marketable equity securities: Mutual funds: Global equity 5,000 392 — 5,392 Domestic community 3,216 109 (8 ) 3,317 Global asset allocation 42,396 1 (3,132 ) 39,265 Total marketable equity securities 50,612 502 (3,140 ) 47,974 Total securities available for sale $ 239,666 $ 3,350 $ (5,347 ) $ 237,669 December 31, 2015 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 $ 13,126 $ — $ (195 ) $ 12,931 Other asset-backed securities 11,395 — (142 ) 11,253 Total other mortgage- and asset-backed securities 24,521 — (337 ) 24,184 State and political subdivisions 16,016 354 (55 ) 16,315 Financial services: Banks 18,813 138 (90 ) 18,861 Diversified financials 23,124 349 (173 ) 23,300 Insurance and REITs 16,883 1 (282 ) 16,602 Total financial services 58,820 488 (545 ) 58,763 Other corporate: Industrials 55,470 306 (1,244 ) 54,532 Utilities 31,952 7 (1,639 ) 30,320 Total other corporate 87,422 313 (2,883 ) 84,852 Total debt securities 186,779 1,155 (3,820 ) 184,114 Marketable equity securities: Mutual funds: Global equity 5,000 388 — 5,388 Domestic community 3,216 70 (13 ) 3,273 Global asset allocation 42,396 3 (3,484 ) 38,915 Total marketable equity securities 50,612 461 (3,497 ) 47,576 Total securities available for sale $ 237,391 $ 1,616 $ (7,317 ) $ 231,690
Held-to-maturity Securities	December 31, 2015 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Securities Held to Maturity: Debt securities: U.S. Treasury $ 636 $ — $ (2 ) $ 634 Government-sponsored enterprises 28,256 94 (126 ) 28,224 Government-sponsored mortgage-backed and collateralized mortgage obligations 155,232 10 (832 ) 154,410 SBA asset-backed securities 16,017 — (59 ) 15,958 Total securities held to maturity $ 200,141 $ 104 $ (1,019 ) $ 199,226 March 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Securities Held to Maturity: Debt securities: U.S. Treasury $ 624 $ 2 $ — $ 626 Government-sponsored enterprises 22,188 179 — 22,367 Government-sponsored mortgage-backed and collateralized mortgage obligations 158,128 1,289 (35 ) 159,382 SBA asset-backed securities 15,638 45 (49 ) 15,634 Total securities held to maturity $ 196,578 $ 1,515 $ (84 ) $ 198,009
Investments Classified by Contractual Maturity Date	The amortized cost and estimated fair value of debt securities by contractual maturity at March 31, 2016 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. Available for Sale Held to Maturity Amortized Cost Fair Value Amortized Cost Fair Value (In thousands) Within 1 year $ 7,670 $ 7,682 $ 5,629 $ 5,635 After 1 year through 5 years 84,677 85,858 11,201 11,229 After 5 years through 10 years 65,390 65,115 5,982 6,129 After 10 years 8,667 8,759 — — 166,404 167,414 22,812 22,993 Mortgage- and asset-backed securities and collateralized mortgage obligations 22,650 22,281 173,766 175,016 $ 189,054 $ 189,695 $ 196,578 $ 198,009
Unrealized Gain (Loss) and Fair Value of Investments - Available-for-sale Securities	December 31, 2015 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: Other mortgage- and asset-backed securities: Privately issued commercial mortgage- backed securities $ (84 ) $ 5,166 $ (111 ) $ 7,765 Other asset-backed securities (142 ) 11,253 — — Total other mortgage- and asset-backed securities (226 ) 16,419 (111 ) 7,765 State and political subdivisions (55 ) 3,324 — Financial services: Banks (90 ) 14,070 — — Diversified financials (173 ) 15,397 — — Insurance and REITs (282 ) 14,487 — — Total financial services (545 ) 43,954 — — Other corporate: Industrials (957 ) 43,848 (287 ) 395 Utilities (1,387 ) 25,353 (252 ) 1,618 Total other corporate (2,344 ) 69,201 (539 ) 2,013 Total debt securities (3,170 ) 132,898 (650 ) 9,778 Marketable equity securities: Mutual funds: Domestic community — — (13 ) 453 Global asset allocation (3,484 ) 36,609 — — Total marketable equity securities (3,484 ) 36,609 (13 ) 453 Total temporarily impaired securities $ (6,654 ) $ 169,507 $ (663 ) $ 10,231 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: March 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 $ (33 ) $ 3,410 $ (69 ) $ 7,320 Other asset-backed (77 ) 4,128 (205 ) 3,704 Total mortgage- and other asset-backed securities (110 ) 7,538 (274 ) 11,024 Financial services: Banks (20 ) 5,345 — — Diversified financials (66 ) 1,779 — — Insurance and REITs (116 ) 7,916 (59 ) 1,004 Total financial services (202 ) 15,040 (59 ) 1,004 Other corporate: Industrials (479 ) 12,959 (229 ) 2,152 Utilities (809 ) 17,944 (45 ) 760 Total other corporate (1,288 ) 30,903 (274 ) 2,912 Total debt securities (1,600 ) 53,481 (607 ) 14,940 Marketable equity securities: Mutual funds: Domestic community — — (8 ) 458 Global asset allocation (3,132 ) 38,901 — — Total marketable equity securities (3,132 ) 38,901 (8 ) 458 Total temporarily impaired available-for-sale securities $ (4,732 ) $ 92,382 $ (615 ) $ 15,398
Unrealized Gain (Loss) and Fair Value of Investments - Held-to-maturity Securities	Securities Held to Maturity: Debt securities: U.S. Treasury $ (2 ) $ 634 $ — $ — Government-sponsored enterprises (126 ) 14,084 — — Government-sponsored mortgage-backed and collateralized mortgage obligations (832 ) 144,820 — — SBA asset-backed securities (59 ) 15,958 — — Total temporarily impaired held-to-maturity securities $ (1,019 ) $ 175,496 $ — $ — Securities Held to Maturity: Debt securities: Government-sponsored mortgage-backed and collateralized mortgage obligations $ (35 ) $ 12,240 $ — $ — SBA asset-backed securities (49 ) 5,234 — — Total temporarily impaired held-to-maturity securities $ (84 ) $ 17,474 $ — $ —

Loans and The Allowance for L25

Loans and The Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2016
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	A summary of the balances of loans follows: March 31, December 31, 2016 2015 (In thousands) Real estate: 1-4 family residential $ 619,528 $ 599,938 Home equity 80,291 77,399 Commercial real estate 587,504 561,203 Construction 92,884 79,773 1,380,207 1,318,313 Commercial business 169,112 182,677 Consumer 36,214 38,186 Total loans 1,585,533 1,539,176 Allowance for loan losses (16,985 ) (17,102 ) Discount and fair value adjustments on purchased loans (1,941 ) (1,959 ) Deferred loan costs and fees, net 3,365 3,160 Loans, net $ 1,569,972 $ 1,523,275
Activity in Allowance for Loan Losses	Activity in the allowance for loan losses for the three months ended March 31, 2016 and 2015 , and allocation of the allowance to loan segments as of March 31, 2016 and December 31, 2015 , follows: 1-4 Family Residential Home Equity Commercial Real Estate Construction Commercial Business Consumer Unallocated Total (In thousands) Three Months Ended March 31, 2016 Allowance at December 31, 2015 $ 3,916 $ 636 $ 7,147 $ 1,364 $ 2,839 $ 772 $ 428 $ 17,102 Provision (credit) for loan losses (251 ) (19 ) 191 258 (148 ) (55 ) (3 ) (27 ) Loans charged-off — — — — (105 ) (18 ) — (123 ) Recoveries — — — — 33 — — 33 Allowance at March 31, 2016 $ 3,665 $ 617 $ 7,338 $ 1,622 $ 2,619 $ 699 $ 425 $ 16,985 Three Months Ended March 31, 2015 Allowance at December 31, 2014 $ 3,222 $ 340 $ 3,551 $ 1,056 $ 3,410 $ 736 $ 658 $ 12,973 Provision (credit) for loan losses (7 ) 40 171 120 (78 ) 25 8 279 Loans charged-off — — — — — (14 ) — (14 ) Recoveries — — — — — — — — Allowance at March 31, 2015 $ 3,215 $ 380 $ 3,722 $ 1,176 $ 3,332 $ 747 $ 666 $ 13,238
Allowance for Credit Losses on Financing Receivables	Additional information pertaining to the allowance for loan losses at March 31, 2016 and December 31, 2015 is as follows: 1-4 Family Home Commercial Construction Commercial Consumer Unallocated Total (In thousands) March 31, 2016 Allowance related to impaired loans $ — $ — $ 47 $ — $ — $ — $ — $ 47 Allowance related to non-impaired loans 3,665 617 7,291 1,622 2,619 699 425 16,938 Total allowance for loan losses $ 3,665 $ 617 $ 7,338 $ 1,622 $ 2,619 $ 699 $ 425 $ 16,985 Impaired loans $ 6,527 $ 311 $ 4,317 $ — $ — $ 208 $ — $ 11,363 Non-impaired loans 613,001 79,980 583,187 92,884 169,112 36,006 — 1,574,170 Total loans $ 619,528 $ 80,291 $ 587,504 $ 92,884 $ 169,112 $ 36,214 $ — $ 1,585,533 December 31, 2015 Allowance related to impaired loans $ — $ — $ 384 $ — $ 10 $ 10 $ — $ 404 Allowance related to non-impaired loans 3,916 636 6,763 1,364 2,829 762 428 16,698 Total allowance for loan losses $ 3,916 $ 636 $ 7,147 $ 1,364 $ 2,839 $ 772 $ 428 $ 17,102 Impaired loans $ 6,114 $ 270 $ 4,631 $ — $ 10 $ 145 $ — $ 11,170 Non-impaired loans 593,824 77,129 556,572 79,773 182,667 38,041 — 1,528,006 Total loans $ 599,938 $ 77,399 $ 561,203 $ 79,773 $ 182,677 $ 38,186 $ — $ 1,539,176
Past Due Financing Receivables	The following is a summary of past due and non-accrual loans, by loan class, at March 31, 2016 and December 31, 2015 : 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) March 31, 2016 Real estate: 1-4 family residential $ 2,330 $ 87 $ 906 $ 3,323 $ 6,105 Home equity 1,503 185 182 1,870 311 Commercial real estate 13,740 — — 13,740 4,317 Commercial business 20 9 — 29 — Consumer 137 105 109 351 208 Total $ 17,730 $ 386 $ 1,197 $ 19,313 $ 10,941 December 31, 2015 Real estate: 1-4 family residential $ 2,287 $ — $ 990 $ 3,277 $ 5,688 Home equity 1,031 19 176 1,226 270 Commercial real estate — 1,249 — 1,249 $ 4,631 Commercial business 23 — — 23 $ 10 Consumer 3 80 120 203 $ 145 Total $ 3,344 $ 1,348 $ 1,286 $ 5,978 $ 10,744
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 March 31, 2016 (In thousands) Impaired loans without a valuation allowance: Real estate: 1-4 family residential $ 6,527 $ 7,237 $ — Home equity 311 470 — Consumer 208 224 — Total 7,046 7,931 — Impaired loans with a valuation allowance: Commercial real estate 4,317 4,359 47 Total 4,317 4,359 47 Total impaired loans $ 11,363 $ 12,290 $ 47 December 31, 2015 Impaired loans without a valuation allowance: Real estate: 1-4 family residential $ 6,114 $ 6,824 $ — Home equity 270 425 — Consumer 35 39 — Total 6,419 7,288 — Impaired loans with a valuation allowance: Commercial real estate 4,631 4,631 384 Commercial business 10 11 10 Consumer 110 110 10 Total 4,751 4,752 404 Total impaired loans $ 11,170 $ 12,040 $ 404 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 March 31, 2016 (In thousands) Impaired loans without a valuation allowance: Real estate: 1-4 family residential $ 6,321 $ 73 Home equity 290 4 Consumer 177 2 Impaired loans with a valuation allowance: Commercial real estate 4,474 42 Commercial 5 — Total $ 11,267 $ 121 Three Months Ended March 31, 2015 Impaired loans without a valuation allowance: Real estate: 1-4 family residential $ 4,557 $ 67 Home Equity 578 6 Consumer 28 — Total $ 5,163 $ 73
Financing Receivable Credit Quality Indicators	The following tables present the Company’s loans by risk rating at March 31, 2016 and December 31, 2015 : 1-4 Family Residential Home Equity Commercial Real Estate Construction Commercial Business Consumer Total Loans (In thousands) March 31, 2016 Loans rated 1 - 6 $ 1,938 $ 330 $ 573,402 $ 92,884 $ 162,779 $ 5 $ 831,338 Loans rated 7 4,432 339 8,224 — 3,300 — 16,295 Loans rated 8 2,031 144 5,878 — 3,033 133 11,219 Loans rated 9 699 — — — — — 699 Loans rated 10 — — — — — — — Loans not rated 610,428 79,478 — — — 36,076 725,982 $ 619,528 $ 80,291 $ 587,504 $ 92,884 $ 169,112 $ 36,214 $ 1,585,533 December 31, 2015 Loans rated 1 - 6 $ 1,950 $ 465 $ 548,360 $ 79,773 $ 181,792 $ 6 $ 812,346 Loans rated 7 4,461 321 7,765 — 874 — 13,421 Loans rated 8 1,592 144 5,078 — — 149 6,963 Loans rated 9 701 — — — 11 — 712 Loans rated 10 — — — — — — — Loans not rated 591,234 76,469 — — — 38,031 705,734 $ 599,938 $ 77,399 $ 561,203 $ 79,773 $ 182,677 $ 38,186 $ 1,539,176

Interest Rate Swap Agreements (

Interest Rate Swap Agreements (Tables)	3 Months Ended
	Mar. 31, 2016
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 March 31, 2016 and December 31, 2015 . Derivative Gains Derivative Losses Notional Amount Fair Value Notional Amount Fair Value (In thousands) March 31, 2016 Economic hedges: Commercial loan level interest rate swap agreements $ 323,120 $ 16,537 $ 323,120 $ 17,305 Other contracts 16,221 36 13,729 116 Total derivatives $ 339,341 $ 16,573 $ 336,849 $ 17,421 December 31, 2015 Economic hedges: Commercial loan level interest rate swap agreements $ 282,546 $ 7,956 $ 282,546 $ 8,411 Other contracts 8,300 6 12,698 78 Total derivatives $ 290,846 $ 7,962 $ 295,244 $ 8,489

Deposits (Tables)

Deposits (Tables)	3 Months Ended
	Mar. 31, 2016
Banking and Thrift [Abstract]
Schedule of Deposit Balances	A summary of deposit balances, by type, is as follows: March 31, December 31, 2016 2015 (In thousands) NOW and demand $ 285,391 $ 288,143 Regular savings 283,586 287,344 Money market 408,591 368,050 Brokered money market 46,673 41,807 Total non-certificate accounts 1,024,241 985,344 Term certificates of $250,000 or more 72,318 65,364 Term certificates less than $250,000 256,694 246,614 Brokered term certificates 131,352 136,527 Total certificate accounts 460,364 448,505 Total deposits $ 1,484,605 $ 1,433,849
Schedule of Contractual Maturities of Deposits and Weighted Average Rate	At March 31, 2016 , the scheduled maturities of term certificate accounts, including brokered deposits, are as follows: Amount Weighted Average Rate (Dollars in thousands) Within 1 year $ 245,014 0.66 % 1-2 years 80,638 1.13 2-3 years 50,644 1.47 3-4 years 61,092 1.97 4 years and beyond 22,976 1.84 $ 460,364 1.06 %

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2016
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) March 31, 2016 Assets Securities available for sale: Debt securities $ — $ 189,695 $ — $ 189,695 Marketable equity securities 47,974 — — 47,974 Derivative assets — 16,573 — 16,573 Total assets $ 47,974 $ 206,268 $ — $ 254,242 Liabilities Derivative liabilities $ — $ 17,421 $ — $ 17,421 December 31, 2015 Assets Securities available for sale: Debt securities $ — $ 184,114 $ — $ 184,114 Marketable equity securities 47,576 — — 47,576 Derivative assets — 7,962 — 7,962 Total assets $ 47,576 $ 192,076 $ — $ 239,652 Liabilities Derivative liabilities $ — $ 8,489 $ — $ 8,489
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) March 31, 2016 Financial assets: Cash and cash equivalents $ 32,009 $ 32,009 $ — $ — $ 32,009 Securities available for sale 237,669 47,974 189,695 — 237,669 Securities held to maturity 196,578 — 198,542 — 198,009 Federal Home Loan Bank stock 16,137 — — 16,137 16,137 Loans and loans held for sale 1,573,898 — — 1,580,426 1,580,426 Accrued interest receivable 5,588 — — 5,588 5,588 Financial liabilities: Deposits 1,484,605 — — 1,487,494 1,487,494 Borrowings 255,000 — 254,733 — 254,733 On-balance sheet derivative financial instruments: Interest rate swap agreements: Assets 16,573 — 16,573 — 16,573 Liabilities 17,421 — 17,421 — 17,421 December 31, 2015 Financial assets: Cash and cash equivalents $ 33,298 $ 33,298 $ — $ — $ 33,298 Securities available for sale 231,690 47,576 184,114 — 231,690 Securities held to maturity 200,141 634 198,592 — 199,226 Federal Home Loan Bank stock 13,567 — — 13,567 13,567 Loans and loans held for sale 1,536,152 — — 1,538,809 1,538,809 Accrued interest receivable 5,344 — — 5,344 5,344 Financial liabilities: Deposits 1,433,849 — — 1,434,179 1,434,179 Borrowings 260,000 — 260,244 — 260,244 On-balance sheet derivative financial instruments: Interest rate swap agreements: Assets 7,962 — 7,962 — 7,962 Liabilities 8,489 — 8,489 — 8,489

Comprehensive Income (Tables)

Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2016
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The components of accumulated other comprehensive income (loss), included in stockholders' equity, are as follows: March 31, December 31, 2016 2015 (In thousands) Securities available for sale: Net unrealized loss $ (1,997 ) $ (5,701 ) Tax effect 651 1,945 Net-of-tax amount (1,346 ) (3,756 ) Securities held to maturity: Net unrealized gain on transferred securities 501 571 Tax effect (172 ) (197 ) Net-of-tax amount 329 374 Defined benefit pension plan: Unrecognized net actuarial loss (2,790 ) (2,858 ) Tax effect 1,028 1,052 Net-of-tax amount (1,762 ) (1,806 ) $ (2,779 ) $ (5,188 ) Changes in accumulated other comprehensive loss, by component, follow: Three Months Ended March 31, 2016 Securities Available for Sale Securities Held to Maturity Defined Benefit Pension Plan Total (In thousands) Balance at December 31, 2015 $ (3,756 ) 374 $ (1,806 ) $ (5,188 ) Other comprehensive income before reclassification adjustments 3,415 — — 3,415 Reclassification adjustments: Net realized losses 289 — — 289 Amortization of actuarial losses — — 68 68 Amortization of amounts previously recorded upon transfer from available-for-sale — (70 ) — (70 ) Tax effects (1,294 ) 25 (24 ) (1,293 ) Net current-period other comprehensive income 2,410 (45 ) 44 2,409 Balance at March 31, 2016 $ (1,346 ) $ 329 $ (1,762 ) $ (2,779 ) Three Months Ended March 31, 2015 Securities Available for Sale Securities Held to Maturity Defined Benefit Pension Plan Total (In thousands) Balance at December 31, 2014 $ 3,392 $ — $ (815 ) $ 2,577 Other comprehensive income before reclassification adjustments 4,162 — — 4,162 Reclassification adjustments: Net realized gains (1,318 ) — — (1,318 ) Tax effects (1,060 ) — — (1,060 ) Net current-period other comprehensive income 1,784 — — 1,784 Balance at March 31, 2015 $ 5,176 $ — $ (815 ) $ 4,361

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2016
Equity [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	Actual Minimum Capital Requirement Minimum To Be Well Capitalized Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Blue Hills Bancorp, Inc.: March 31, 2016 Total capital (to risk weighted assets) $ 398,204 23.1 % $ 138,160 8.0 % 172,670 10.0 % Tier 1 capital (to risk weighted assets) 381,219 22.1 103,620 6.0 138,160 8.0 Common equity Tier 1 (to risk weighted assets) 381,219 22.1 77,715 4.5 112,255 6.5 Tier 1 capital (to average assets) 381,219 17.9 85,249 4.0 106,561 5.0 December 31, 2015 Total capital (to risk weighted assets) $ 407,444 24.8 % $ 131,231 8.0 % 164,039 10.0 % Tier 1 capital (to risk weighted assets) 390,342 23.8 98,423 6.0 131,231 8.0 Common equity Tier 1 (to risk weighted assets) 390,342 23.8 73,818 4.5 106,625 6.5 Tier 1 capital (to average assets) 390,342 19.6 79,658 4.0 99,573 5.0 Blue Hills Bank: March 31, 2016 Total capital (to risk weighted assets) $ 299,539 17.4 % $ 137,904 8.0 % $ 172,380 10.0 % Tier 1 capital (to risk weighted assets) 282,554 16.4 103,428 6.0 137,903 8.0 Common equity Tier 1 (to risk weighted assets) 282,554 16.4 77,571 4.5 112,047 6.5 Tier 1 capital (to average assets) 282,554 13.3 85,218 4.0 106,522 5.0 December 31, 2015 Total capital (to risk weighted assets) $ 296,309 18.1 % $ 130,832 8.0 % $ 163,540 10.0 % Tier 1 capital (to risk weighted assets) 279,207 17.1 98,124 6.0 130,832 8.0 Common equity Tier 1 (to risk weighted assets) 279,207 17.1 73,593 N/A 106,301 6.5 Tier 1 capital (to average assets) 279,207 14.0 79,867 4.0 99,608 5.0

Employee Stock Ownership Plan (

Employee Stock Ownership Plan (Tables)	3 Months Ended
	Mar. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Employee Stock Ownership Plan (ESOP) Disclosures	Shares held by the ESOP include the following: March 31, 2016 December 31, 2015 Allocated 151,824 75,912 Committed to be allocated 18,925 75,912 Unallocated 2,105,921 2,124,846 2,276,670 2,276,670

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Three Months Ended March 31, 2016 March 31, 2015 (In thousands, except share amounts) Net income applicable to common stock $ 1,667 $ 1,306 Average number of common shares outstanding 27,181,469 28,466,813 Less: Average unallocated ESOP shares (2,115,383 ) (2,192,075 ) Average number of common shares outstanding used to calculate basic earnings per common share 25,066,086 26,274,738 Effect of dilutive unvested restricted stock awards 66,355 — Average number of common shares outstanding used to calculate diluted earnings per common share 25,132,441 26,274,738 Earnings per common share: Basic $ 0.07 $ 0.05 Diluted $ 0.07 $ 0.05

Share-Based Compensation (Table

Share-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2016
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 commons stock during the first three months of 2016 . Date of grant February 29, 2016 Options granted 55,000 Vesting period (years) 5 Expiration date February 28, 2026 Expected volatility 28.47 % Expected life (years) 6.5 Expected dividend yield 0.58 % Risk free interest rate 1.38 % Fair value per option $ 4.02
Schedule of Share-based Compensation, Stock Options, Activity	A summary of the status of the Company's stock option grants for the quarter ended March 31, 2016 , is presented in the table below: Stock Option Awards Weighted Average Exercise Price Weighted Average Remaining Contractual Term (years) Aggregate Intrinsic Value Balance at December 31, 2015 2,434,000 $ 14.07 Granted 55,000 13.80 Forfeited (10,000 ) 14.07 Balance at March 31, 2016 2,479,000 $ 14.06 9.53 $ — Outstanding and expected to vest at March 31, 2016 2,454,401 $ 14.06 9.53 $ — Exercisable at March 31, 2016 — $ — $ — Unrecognized compensation cost $9,489,000 Weighted average remaining recognition period (years) 4.53
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 quarter ended March 31, 2016 : Outstanding Restricted Stock Awards Weighted Average Grant Price Nonvested stock awards at December 31, 2015 983,175 $ 14.07 Granted 31,450 13.83 Forfeited 7,500 14.07 Nonvested stock awards at March 31, 2016 1,007,125 $ 14.06 Unrecognized compensation cost inclusive of directors' fees $12,828,000 Weighted average remaining recognition period (years) 4.54

Basis of Presentation and Con34

Basis of Presentation and Consolidation (Details)	3 Months Ended
	Mar. 31, 2016
1-4 Family Residential
Subsidiary or Equity Method Investee [Line Items]
Origination covenants, maximum loan-to-value ratio (percent)	80.00%

Securities - Available-for-sale

Securities - Available-for-sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Debt securities:
Amortized Cost	$ 189,054	$ 186,779
Gross Unrealized Gains	2,848	1,155
Gross Unrealized Losses	(2,207)	(3,820)
Fair Value	189,695	184,114
Marketable equity securities:
Amortized Cost	50,612	50,612
Gross Unrealized Gains	502	461
Gross Unrealized Losses	(3,140)	(3,497)
Fair Value	47,974	47,576
Available-for-sale securities:
Amortized Cost	239,666	237,391
Gross Unrealized Gains	3,350	1,616
Gross Unrealized Losses	(5,347)	(7,317)
Fair Value	237,669	231,690
Privately issued commercial mortgage- backed securities
Debt securities:
Amortized Cost	12,596	13,126
Gross Unrealized Gains	14	0
Gross Unrealized Losses	(102)	(195)
Fair Value	12,508	12,931
Other asset-backed securities
Debt securities:
Amortized Cost	10,054	11,395
Gross Unrealized Gains	1	0
Gross Unrealized Losses	(282)	(142)
Fair Value	9,773	11,253
Total mortgage- and other asset-backed securities
Debt securities:
Amortized Cost	22,650	24,521
Gross Unrealized Gains	15	0
Gross Unrealized Losses	(384)	(337)
Fair Value	22,281	24,184
State and political
Debt securities:
Amortized Cost	16,736	16,016
Gross Unrealized Gains	429	354
Gross Unrealized Losses	0	(55)
Fair Value	17,165	16,315
Global Equity
Marketable equity securities:
Amortized Cost	5,000	5,000
Gross Unrealized Gains	392	388
Gross Unrealized Losses	0	0
Fair Value	5,392	5,388
Domestic community
Marketable equity securities:
Amortized Cost	3,216	3,216
Gross Unrealized Gains	109	70
Gross Unrealized Losses	(8)	(13)
Fair Value	3,317	3,273
Global asset allocation
Marketable equity securities:
Amortized Cost	42,396	42,396
Gross Unrealized Gains	1	3
Gross Unrealized Losses	(3,132)	(3,484)
Fair Value	39,265	38,915
Other Corporate | Corporate debt securities
Debt securities:
Amortized Cost	88,310	87,422
Gross Unrealized Gains	1,335	313
Gross Unrealized Losses	(1,562)	(2,883)
Fair Value	88,083	84,852
Industrials | Corporate debt securities
Debt securities:
Amortized Cost	54,894	55,470
Gross Unrealized Gains	1,034	306
Gross Unrealized Losses	(708)	(1,244)
Fair Value	55,220	54,532
Utilities | Corporate debt securities
Debt securities:
Amortized Cost	33,416	31,952
Gross Unrealized Gains	301	7
Gross Unrealized Losses	(854)	(1,639)
Fair Value	32,863	30,320
Financial Services | Corporate debt securities
Debt securities:
Amortized Cost	61,358	58,820
Gross Unrealized Gains	1,069	488
Gross Unrealized Losses	(261)	(545)
Fair Value	62,166	58,763
Banks | Corporate debt securities
Debt securities:
Amortized Cost	17,629	18,813
Gross Unrealized Gains	236	138
Gross Unrealized Losses	(20)	(90)
Fair Value	17,845	18,861
Diversified Financials | Corporate debt securities
Debt securities:
Amortized Cost	24,657	23,124
Gross Unrealized Gains	697	349
Gross Unrealized Losses	(66)	(173)
Fair Value	25,288	23,300
Insurance and REITs | Corporate debt securities
Debt securities:
Amortized Cost	19,072	16,883
Gross Unrealized Gains	136	1
Gross Unrealized Losses	(175)	(282)
Fair Value	$ 19,033	$ 16,602

Securities - Held-to-maturity S

Securities - Held-to-maturity Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 196,578	$ 200,141
Gross Unrealized Gains	1,515	104
Gross Unrealized Losses	(84)	(1,019)
Fair Value	198,009	199,226
U.S. Treasury
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	624	636
Gross Unrealized Gains	2	0
Gross Unrealized Losses	0	(2)
Fair Value	626	634
Government-sponsored enterprises
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	22,188	28,256
Gross Unrealized Gains	179	94
Gross Unrealized Losses	0	(126)
Fair Value	22,367	28,224
Government-sponsored mortgage-backed and collateralized mortgage obligations
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	158,128	155,232
Gross Unrealized Gains	1,289	10
Gross Unrealized Losses	(35)	(832)
Fair Value	159,382	154,410
SBA asset-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	15,638	16,017
Gross Unrealized Gains	45	0
Gross Unrealized Losses	(49)	(59)
Fair Value	$ 15,634	$ 15,958

Securities - Schedule of Contra

Securities - Schedule of Contractual Maturities of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Within 1 year, Available for Sale, Amortized Cost	$ 7,670
After 1 year through 5 years, Available for Sale, Amortized Cost	84,677
After 5 years through 10 years, Available for Sale, Amortized Cost	65,390
After 10 years, Available for Sale, Amortized Cost	8,667
Single Maturity Date, Available for Sale, Amortized Cost	166,404
Mortgage- and asset-backed securities and collateralized mortgage obligations - Amortized Basis	22,650
Amortized Cost	189,054	$ 186,779
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Within 1 year, Available for Sale, Fair Value	7,682
After 1 year through 5 years, Available for Sale, Fair Value	85,858
After 5 years through 10 years, Available for Sale, Fair Value	65,115
After 10 years, Available for Sale, Fair Value	8,759
Single Maturity Date, Available for Sale, Fair Value	167,414
Mortgage- and asset-backed securities and collateralized mortgage obligations - Fair Value	22,281
Available-for-sale securities, total debt securities	189,695	184,114
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Within 1 year, Held to Maturity, Amortized Cost	5,629
After 1 year through 5 years, Held to Maturity, Amortized Cost	11,201
After 5 years through 10 years, Held to Maturity, Amortized Cost	5,982
After 10 years, Held to Maturity, Amortized Cost	0
Single Maturity Date, Held to Maturity, Amortized Cost	22,812
Mortgage- and asset-backed securities and collateralized mortgage obligations - Amortized Basis	173,766
Amortized Cost	196,578	200,141
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Fair Value [Abstract]
Within 1 year, Held to Maturity, Fair Value	5,635
After 1 year through 5 years, Held to Maturity, Fair Value	11,229
After 5 years through 10 years, Held to Maturity, Fair Value	6,129
After 10 years, Held to Maturity, Fair Value	0
Single Maturity Date, Held to Maturity, Fair Value	22,993
Mortgage- and asset-backed securities and collateralized mortgage obligations - Fair Value	175,016
Held-to-maturity securities, total debt securities	$ 198,009	$ 199,226

Securities - Available-for-sa38

Securities - Available-for-sale Securities Unrealized Loss (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	$ (4,732)	$ (6,654)
Gross Unrealized Losses - More than twelve months	(615)	(663)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	92,382	169,507
Fair Value - More than twelve months	15,398	10,231
Total debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(1,600)	(3,170)
Gross Unrealized Losses - More than twelve months	(607)	(650)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	53,481	132,898
Fair Value - More than twelve months	14,940	9,778
Privately issued commercial mortgage- backed securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(33)	(84)
Gross Unrealized Losses - More than twelve months	(69)	(111)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	3,410	5,166
Fair Value - More than twelve months	7,320	7,765
Other asset-backed securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(77)	(142)
Gross Unrealized Losses - More than twelve months	(205)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	4,128	11,253
Fair Value - More than twelve months	3,704	0
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	(110)	(226)
Gross Unrealized Losses - More than twelve months	(274)	(111)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	7,538	16,419
Fair Value - More than twelve months	11,024	7,765
State and political
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		$ (55)
Gross Unrealized Losses - More than twelve months
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months		$ 3,324
Fair Value - More than twelve months		0
Total marketable equity securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(3,132)	(3,484)
Gross Unrealized Losses - More than twelve months	(8)	(13)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	38,901	36,609
Fair Value - More than twelve months	458	453
Domestic community
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	0	0
Gross Unrealized Losses - More than twelve months	(8)	(13)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	0	0
Fair Value - More than twelve months	458	453
Global asset allocation
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(3,132)	(3,484)
Gross Unrealized Losses - More than twelve months	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	38,901	36,609
Fair Value - More than twelve months	0	0
Other Corporate | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(1,288)	(2,344)
Gross Unrealized Losses - More than twelve months	(274)	(539)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	30,903	69,201
Fair Value - More than twelve months	2,912	2,013
Industrials | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(479)	(957)
Gross Unrealized Losses - More than twelve months	(229)	(287)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	12,959	43,848
Fair Value - More than twelve months	2,152	395
Utilities | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(809)	(1,387)
Gross Unrealized Losses - More than twelve months	(45)	(252)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	17,944	25,353
Fair Value - More than twelve months	760	1,618
Financial Services | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(202)	(545)
Gross Unrealized Losses - More than twelve months	(59)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	15,040	43,954
Fair Value - More than twelve months	1,004	0
Banks | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(20)	(90)
Gross Unrealized Losses - More than twelve months	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	5,345	14,070
Fair Value - More than twelve months	0	0
Diversified Financials | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(66)	(173)
Gross Unrealized Losses - More than twelve months	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	1,779	15,397
Fair Value - More than twelve months	0	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	(116)	(282)
Gross Unrealized Losses - More than twelve months	(59)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	7,916	14,487
Fair Value - More than twelve months	$ 1,004	$ 0

Securities - Held-to-maturity39

Securities - Held-to-maturity Securities Unrealized Loss (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	$ (84)	$ (1,019)
Gross Unrealized Losses - More than twelve months	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	17,474	175,496
Fair Value - More than twelve months	0	0
U.S. Treasury
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(2)
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		634
Fair Value - More than twelve months		0
Government-sponsored enterprises
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months		(126)
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		14,084
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	(35)	(832)
Gross Unrealized Losses - More than twelve months	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	12,240	144,820
Fair Value - More than twelve months	0	0
SBA asset-backed securities
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(49)	(59)
Gross Unrealized Losses - More than twelve months	0	0
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	5,234	15,958
Fair Value - More than twelve months	$ 0	$ 0

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, transferred security, carrying value	$ 196,300
Available-for-sale securities, transferred security, unrealized gain	666
Proceeds from sale of available-for-sale securities	15,456	$ 68,042
Available-for-sale securities, gross realized gains	133	1,300
Available-for-sale securities, gross realized losses	$ 422	$ 35
Depreciation, percentage of amortized cost basis	3.30%
Gross Unrealized Losses - More than twelve months	$ 615		$ 663
Mutual Funds
Schedule of Available-for-sale Securities [Line Items]
Depreciation, percentage of amortized cost basis	8.70%
Gross Unrealized Losses - More than twelve months	$ 3,100
Held-to-maturity Securities | Accumulated Net Investment Gain (Loss)
Schedule of Available-for-sale Securities [Line Items]
Gross unrealized gains	$ 501		$ 571

Loans and The Allowance for L41

Loans and The Allowance for Loan Losses - Summary of Loan balances (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 1,585,533	$ 1,539,176
Allowance for loan losses	(16,985)	(17,102)
Discount and fair value adjustments on purchased loans	(1,941)	(1,959)
Deferred loan costs and fees, net	3,365	3,160
Loans, net	1,569,972	1,523,275
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,380,207	1,318,313
1-4 Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	619,528	599,938
Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	80,291	77,399
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	587,504	561,203
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	92,884	79,773
Commercial Business
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	169,112	182,677
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 36,214	$ 38,186

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
	Mar. 31, 2016	Mar. 31, 2015
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	$ 17,102	$ 12,973
Provision (credit) for loan losses	(27)	279
Loans charged-off	(123)	(14)
Recoveries	33	0
Loans and Leases Receivable, Ending Allowance	16,985	13,238
1-4 Family Residential
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	3,916	3,222
Provision (credit) for loan losses	(251)	(7)
Loans charged-off	0	0
Recoveries	0	0
Loans and Leases Receivable, Ending Allowance	3,665	3,215
Home Equity
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	636	340
Provision (credit) for loan losses	(19)	40
Loans charged-off	0	0
Recoveries	0	0
Loans and Leases Receivable, Ending Allowance	617	380
Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	7,147	3,551
Provision (credit) for loan losses	191	171
Loans charged-off	0	0
Recoveries	0	0
Loans and Leases Receivable, Ending Allowance	7,338	3,722
Construction
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	1,364	1,056
Provision (credit) for loan losses	258	120
Loans charged-off	0	0
Recoveries	0	0
Loans and Leases Receivable, Ending Allowance	1,622	1,176
Commercial Business
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	2,839	3,410
Provision (credit) for loan losses	(148)	(78)
Loans charged-off	(105)	0
Recoveries	33	0
Loans and Leases Receivable, Ending Allowance	2,619	3,332
Consumer
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	772	736
Provision (credit) for loan losses	(55)	25
Loans charged-off	(18)	(14)
Recoveries	0	0
Loans and Leases Receivable, Ending Allowance	699	747
Unallocated
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	428	658
Provision (credit) for loan losses	(3)	8
Loans charged-off	0	0
Recoveries	0	0
Loans and Leases Receivable, Ending Allowance	$ 425	$ 666

Loans and The Allowance for L43

Loans and The Allowance for Loan Losses - Additional Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	$ 47	$ 404
Allowance related to non-impaired loans	16,938	16,698
Total allowance for loan losses	16,985	17,102	$ 13,238	$ 12,973
Impaired loans	11,363	11,170
Non-impaired loans	1,574,170	1,528,006
Total loans	1,585,533	1,539,176
1-4 Family Residential
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0	0
Allowance related to non-impaired loans	3,665	3,916
Total allowance for loan losses	3,665	3,916	3,215	3,222
Impaired loans	6,527	6,114
Non-impaired loans	613,001	593,824
Total loans	619,528	599,938
Home Equity
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0	0
Allowance related to non-impaired loans	617	636
Total allowance for loan losses	617	636	380	340
Impaired loans	311	270
Non-impaired loans	79,980	77,129
Total loans	80,291	77,399
Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	47	384
Allowance related to non-impaired loans	7,291	6,763
Total allowance for loan losses	7,338	7,147	3,722	3,551
Impaired loans	4,317	4,631
Non-impaired loans	583,187	556,572
Total loans	587,504	561,203
Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0	0
Allowance related to non-impaired loans	1,622	1,364
Total allowance for loan losses	1,622	1,364	1,176	1,056
Impaired loans	0	0
Non-impaired loans	92,884	79,773
Total loans	92,884	79,773
Commercial Business
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0	10
Allowance related to non-impaired loans	2,619	2,829
Total allowance for loan losses	2,619	2,839	3,332	3,410
Impaired loans	0	10
Non-impaired loans	169,112	182,667
Total loans	169,112	182,677
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0	10
Allowance related to non-impaired loans	699	762
Total allowance for loan losses	699	772	747	736
Impaired loans	208	145
Non-impaired loans	36,006	38,041
Total loans	36,214	38,186
Unallocated
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0	0
Allowance related to non-impaired loans	425	428
Total allowance for loan losses	425	428	$ 666	$ 658
Impaired loans	0	0
Non-impaired loans	0	0
Total loans	$ 0	$ 0

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	Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 19,313	$ 5,978
Loans on Non-accrual	10,941	10,744
1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,323	3,277
Loans on Non-accrual	6,105	5,688
Home Equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,870	1,226
Loans on Non-accrual	311	270
Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	13,740	1,249
Loans on Non-accrual	4,317	4,631
Commercial Business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	29	23
Loans on Non-accrual	0	10
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	351	203
Loans on Non-accrual	208	145
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	17,730	3,344
30-59 Days Past Due | 1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,330	2,287
30-59 Days Past Due | Home Equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,503	1,031
30-59 Days Past Due | Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	13,740	0
30-59 Days Past Due | Commercial Business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	20	23
30-59 Days Past Due | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	137	3
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	386	1,348
60-89 Days Past Due | 1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	87	0
60-89 Days Past Due | Home Equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	185	19
60-89 Days Past Due | Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	1,249
60-89 Days Past Due | Commercial Business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	9	0
60-89 Days Past Due | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	105	80
Past Due 90 Days or More
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,197	1,286
Past Due 90 Days or More | 1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	906	990
Past Due 90 Days or More | Home Equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	182	176
Past Due 90 Days or More | Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Past Due 90 Days or More | Commercial Business
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Past Due 90 Days or More | Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 109	$ 120

Loans and The Allowance for L45

Loans and The Allowance for Loan Losses - Summary of Impaired Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Recorded Investment
Recorded Investment, without valuation allowance	$ 7,046	$ 6,419
Recorded Investment, with a valuation allowance	4,317	4,751
Recorded Investment, total	11,363	11,170
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	7,931	7,288
Unpaid Principal Balance, with a valuation allowance	4,359	4,752
Unpaid Principal Balance, total	12,290	12,040
Related Allowance	47	404
1-4 Family Residential
Recorded Investment
Recorded Investment, without valuation allowance	6,527	6,114
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	7,237	6,824
Home Equity
Recorded Investment
Recorded Investment, without valuation allowance	311	270
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	470	425
Consumer
Recorded Investment
Recorded Investment, without valuation allowance	208	35
Recorded Investment, with a valuation allowance		110
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	224	39
Unpaid Principal Balance, with a valuation allowance		110
Related Allowance		10
Commercial Real Estate
Recorded Investment
Recorded Investment, with a valuation allowance	4,317	4,631
Unpaid Principal Balance
Unpaid Principal Balance, with a valuation allowance	4,359	4,631
Related Allowance	$ 47	384
Commercial Business
Recorded Investment
Recorded Investment, with a valuation allowance		10
Unpaid Principal Balance
Unpaid Principal Balance, with a valuation allowance		11
Related Allowance		$ 10

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
	Mar. 31, 2016	Mar. 31, 2015
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, without a valuation allowance		$ 5,163
Interest Income Recognized, without a valuation allowance		73
Average Recorded Investment, with a valuation allowance	$ 11,267
Interest Income Recognized, with a valuation allowance	121
1-4 Family Residential
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, without a valuation allowance	6,321	4,557
Interest Income Recognized, without a valuation allowance	73	67
Home Equity
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, without a valuation allowance	290	578
Interest Income Recognized, without a valuation allowance	4	6
Consumer
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, without a valuation allowance	177	28
Interest Income Recognized, without a valuation allowance	2	$ 0
Commercial Real Estate
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, with a valuation allowance	4,474
Interest Income Recognized, with a valuation allowance	42
Commercial Business
Financing Receivable, Impaired [Line Items]
Average Recorded Investment, with a valuation allowance	5
Interest Income Recognized, with a valuation allowance	$ 0

Loans and The Allowance for L47

Loans and The Allowance for Loan Losses - Summary of Loan by Risk Rating (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 1,585,533	$ 1,539,176
1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	619,528	599,938
Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	80,291	77,399
Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	587,504	561,203
Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	92,884	79,773
Commercial Business
Financing Receivable, Recorded Investment [Line Items]
Total loans	169,112	182,677
Consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	36,214	38,186
Loans rated 1 - 6
Financing Receivable, Recorded Investment [Line Items]
Total loans	831,338	812,346
Loans rated 1 - 6 | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,938	1,950
Loans rated 1 - 6 | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	330	465
Loans rated 1 - 6 | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	573,402	548,360
Loans rated 1 - 6 | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	92,884	79,773
Loans rated 1 - 6 | Commercial Business
Financing Receivable, Recorded Investment [Line Items]
Total loans	162,779	181,792
Loans rated 1 - 6 | Consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	5	6
Loans rated 7
Financing Receivable, Recorded Investment [Line Items]
Total loans	16,295	13,421
Loans rated 7 | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,432	4,461
Loans rated 7 | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	339	321
Loans rated 7 | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	8,224	7,765
Loans rated 7 | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans rated 7 | Commercial Business
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,300	874
Loans rated 7 | Consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans rated 8
Financing Receivable, Recorded Investment [Line Items]
Total loans	11,219	6,963
Loans rated 8 | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,031	1,592
Loans rated 8 | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	144	144
Loans rated 8 | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,878	5,078
Loans rated 8 | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans rated 8 | Commercial Business
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,033	0
Loans rated 8 | Consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	133	149
Loans rated 9
Financing Receivable, Recorded Investment [Line Items]
Total loans	699	712
Loans rated 9 | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	699	701
Loans rated 9 | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans rated 9 | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans rated 9 | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans rated 9 | Commercial Business
Financing Receivable, Recorded Investment [Line Items]
Total loans		11
Loans rated 9 | Consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans rated 10
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans rated 10 | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans rated 10 | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans rated 10 | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans rated 10 | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans rated 10 | Commercial Business
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans rated 10 | Consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans not rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	725,982	705,734
Loans not rated | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	610,428	591,234
Loans not rated | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	79,478	76,469
Loans not rated | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans not rated | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans not rated | Commercial Business
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans not rated | Consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 36,076	$ 38,031

Loans and The Allowance for L48

Loans and The Allowance for Loan Losses - Narrative (Details)	3 Months Ended
	Mar. 31, 2016USD ($)	Mar. 31, 2015USD ($)loan
Financing Receivable, Modifications [Line Items]
Financing receivable, modification, recorded investment		$ 2
1-4 Family Residential
Financing Receivable, Modifications [Line Items]
Number of contracts | loan		2
Pre-Modification Outstanding Recorded Investment	$ 477,000
Post-Modification Outstanding Recorded Investment	$ 492,000

Interest Rate Swap Agreements49

Interest Rate Swap Agreements (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Derivative Gains, notional amount	$ 339,341	$ 290,846
Derivative Gains, fair value	16,573	7,962
Derivative Losses, notional amount	336,849	295,244
Derivative Losses, fair value	17,421	8,489
Interest Rate Swap
Derivatives, Fair Value [Line Items]
Derivative Gains, notional amount	323,120	282,546
Derivative Gains, fair value	16,537	7,956
Derivative Losses, notional amount	323,120	282,546
Derivative Losses, fair value	17,305	8,411
Other Contract
Derivatives, Fair Value [Line Items]
Derivative Gains, notional amount	16,221	8,300
Derivative Gains, fair value	36	6
Derivative Losses, notional amount	13,729	12,698
Derivative Losses, fair value	$ 116	$ 78

Deposits - Summary of Deposit B

Deposits - Summary of Deposit Balances (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Banking and Thrift [Abstract]
NOW and demand	$ 285,391	$ 288,143
Regular savings	283,586	287,344
Money market	408,591	368,050
Brokered money market	46,673	41,807
Total non-certificate accounts	1,024,241	985,344
Term certificates of $250,000 or more	72,318	65,364
Term certificates less than $250,000	256,694	246,614
Brokered term certificates	131,352	136,527
Total certificate accounts	460,364	448,505
Total deposits	$ 1,484,605	$ 1,433,849

Deposits - Schedule of Contract

Deposits - Schedule of Contractual Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Time Deposits, Fiscal Year Maturity [Abstract]
Amount - Within 1 year	$ 245,014
Amount - 1-2 years	80,638
Amount - 2-3 years	50,644
Amount - 3-4 years	61,092
Amount - 4 years and beyond	22,976
Total certificate accounts	$ 460,364	$ 448,505
Weighted Average Rate of Time Deposits [Abstract]
Weighted Average Rate - Within 1 year	0.66%
Weighted Average Rate - 1-2 years	1.13%
Weighted Average Rate - 2-3 years	1.47%
Weighted Average Rate - 3-4 years	1.97%
Weighted Average Rate - 4 years and beyond	1.84%
Weighted Average Rate	1.06%

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Assets
Debt securities	$ 189,695	$ 184,114
Marketable equity securities	47,974	47,576
Recurring
Assets
Debt securities	189,695	184,114
Marketable equity securities	47,974	47,576
Derivative assets	16,573	7,962
Total assets	254,242	239,652
Liabilities
Derivative liabilities	17,421	8,489
Recurring | Level 1
Assets
Debt securities	0	0
Marketable equity securities	47,974	47,576
Derivative assets	0	0
Total assets	47,974	47,576
Liabilities
Derivative liabilities	0	0
Recurring | Level 2
Assets
Debt securities	189,695	184,114
Marketable equity securities	0	0
Derivative assets	16,573	7,962
Total assets	206,268	192,076
Liabilities
Derivative liabilities	17,421	8,489
Recurring | Level 3
Assets
Debt securities	0	0
Marketable equity securities	0	0
Derivative assets	0	0
Total assets	0	0
Liabilities
Derivative liabilities	$ 0	$ 0

Fair Value Measurements - Ass53

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - Nonrecurring - Level 3 $ in Thousands	3 Months Ended
	Mar. 31, 2016USD ($)loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of impaired loans | loan	4
Impaired loans	$ 4,500
Total gains (losses)	$ 221

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Fair Value, Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Financial assets:
Securities available for sale	$ 237,669	$ 231,690
Securities held to maturity	196,578	200,141
Estimate of Fair Value Measurement
Financial assets:
Cash and cash equivalents	32,009	33,298
Securities available for sale	237,669	231,690
Securities held to maturity	198,009	199,226
Federal Home Loan Bank stock	16,137	13,567
Loans and loans held for sale	1,580,426	1,538,809
Accrued interest receivable	5,588	5,344
Financial liabilities:
Deposits	1,487,494	1,434,179
Borrowings	254,733	260,244
Carrying Amount
Financial assets:
Cash and cash equivalents	32,009	33,298
Securities available for sale	237,669	231,690
Securities held to maturity	196,578	200,141
Federal Home Loan Bank stock	16,137	13,567
Loans and loans held for sale	1,573,898	1,536,152
Accrued interest receivable	5,588	5,344
Financial liabilities:
Deposits	1,484,605	1,433,849
Borrowings	255,000	260,000
Level 1
Financial assets:
Cash and cash equivalents	32,009	33,298
Securities available for sale	47,974	47,576
Securities held to maturity	0	634
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	189,695	184,114
Securities held to maturity	198,542	198,592
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	254,733	260,244
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	16,137	13,567
Loans and loans held for sale	1,580,426	1,538,809
Accrued interest receivable	5,588	5,344
Financial liabilities:
Deposits	1,487,494	1,434,179
Borrowings	0	0
Interest Rate Swap | Estimate of Fair Value Measurement
Financial liabilities:
Derivative assets	16,573	7,962
Derivative liabilities	17,421	8,489
Interest Rate Swap | Carrying Amount
Financial liabilities:
Derivative assets	16,573	7,962
Derivative liabilities	17,421	8,489
Interest Rate Swap | Level 1
Financial liabilities:
Derivative assets	0	0
Derivative liabilities	0	0
Interest Rate Swap | Level 2
Financial liabilities:
Derivative assets	16,573	7,962
Derivative liabilities	17,421	8,489
Interest Rate Swap | Level 3
Financial liabilities:
Derivative assets	0	0
Derivative liabilities	$ 0	$ 0

Comprehensive Income - Componen

Comprehensive Income - Components of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income	$ (2,779)	$ (5,188)
Accumulated Defined Benefit Plans Adjustment, Net Unamortized Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized actuarial gain (loss)	(2,790)	(2,858)
Tax effect	1,028	1,052
Accumulated other comprehensive income	(1,762)	(1,806)
Available-for-sale Securities | Accumulated Net Investment Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized actuarial gain (loss)	(1,997)	(5,701)
Tax effect	651	1,945
Accumulated other comprehensive income	(1,346)	(3,756)
Held-to-maturity Securities | Accumulated Net Investment Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized actuarial gain (loss)	501	571
Tax effect	(172)	(197)
Accumulated other comprehensive income	$ 329	$ 374

Comprehensive Income - Changes

Comprehensive Income - Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 398,829	$ 411,606
Other comprehensive income	2,409	1,784
Ending balance	393,556	414,944
Defined Benefit Pension Plan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,806)	(815)
Other comprehensive income (loss) before reclassification	0	0
Net realized losses	0	0
Amortization of actuarial losses	68
Tax effects	(24)	0
Other comprehensive income	44	0
Ending balance	(1,762)	(815)
Accumulated Other Comprehensive Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(5,188)	2,577
Other comprehensive income (loss) before reclassification	3,415	4,162
Net realized losses	289	(1,318)
Amortization of actuarial losses	68
Amortization of amounts previously recorded upon transfer from available-for-sale	(70)
Tax effects	(1,293)	(1,060)
Other comprehensive income	2,409	1,784
Ending balance	(2,779)	4,361
Available-for-sale Securities | Accumulated Net Investment Gain (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(3,756)	3,392
Other comprehensive income (loss) before reclassification	3,415	4,162
Net realized losses	289	(1,318)
Amortization of amounts previously recorded upon transfer from available-for-sale	0
Tax effects	(1,294)	(1,060)
Other comprehensive income	2,410	1,784
Ending balance	(1,346)	5,176
Held-to-maturity Securities | Accumulated Net Investment Gain (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	374	0
Other comprehensive income (loss) before reclassification	0	0
Net realized losses	0	0
Amortization of amounts previously recorded upon transfer from available-for-sale	(70)
Tax effects	25	0
Other comprehensive income	(45)	0
Ending balance	$ 329	$ 0

Stockholders' Equity (Details)

Stockholders' Equity (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Jan. 01, 2015	Dec. 31, 2014
Capital [Abstract]
Actual - Total Capital to Risk Weighted Assets	$ 398,204	$ 407,444
Actual - Total Capital to Risk Weighted Assets Ratio (percentage)	23.10%	24.80%
Minimum Capital Requirement - Total Capital	$ 138,160	$ 131,231
Minimum Capital Requirement - Total Capital to Risk Weighted Assets Ratio (percentage)	8.00%	8.00%
Minimum to Be Well Capitalized - Total Capital	$ 172,670	$ 164,039
Minimum to Be Well Capitalized - Total Capital to Risk Weighted Assets Ratio (percentage)	10.00%	10.00%
Tier One Risk Based Capital [Abstract]
Actual - Tier 1 Capital to Risk Weighted Assets	$ 381,219	$ 390,342
Actual - Tier 1 Capital to Risk Weighted Assets Ratio (percentage)	22.10%	23.80%
Minimum Capital Requirement - Tier 1 Capital to Risk Weighted Assets	$ 103,620	$ 98,423
Minimum Capital Requirement - Tier 1 Capital to Risk Weighted Assets Ratio (percentage)	6.00%	6.00%	6.00%	4.00%
Minimum to Be Well Capitalized - Tier 1 Capital to Risk Weighted Assets	$ 138,160	$ 131,231
Minimum to Be Well Capitalized - Tier 1 Capital to Risk Weighted Assets Ratio (percentage)	8.00%	8.00%
Common Equity Risk Based Capital [Abstract]
Actual - Common Equity to Risk Weighted Assets	$ 381,219	$ 390,342
Actual - Common Equity to Risk Weighted Assets Ratio (percentage)	22.10%	23.80%
Minimum Capital Requirement - Common Equity to Risk Weighted Assets	$ 77,715	$ 73,818
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	$ 112,255	$ 106,625
Minimum to Be Well Capitalized - Common Equity to Risk Weighted Assets Ratio (percentage)	6.50%	6.50%
Tier One Leverage Capital [Abstract]
Actual - Tier 1 Capital to Average Assets	$ 381,219	$ 390,342
Actual - Tier 1 Capital to Average Assets Ratio (percentage)	17.90%	19.60%
Minimum Capital Requirement - Tier 1 Capital to Average Assets	$ 85,249	$ 79,658
Minimum Capital Requirement - Tier 1 Capital to Average Assets Ratio (percentage)	4.00%	4.00%	4.00%
Minimum to Be Well Capitalized - Tier 1 Capital to Average Assets	$ 106,561	$ 99,573
Minimum to Be Well Capitalized - Tier 1 Capital to Average Assets Ratio (percentage)	5.00%	5.00%
Blue Hills Bank
Capital [Abstract]
Actual - Total Capital to Risk Weighted Assets	$ 299,539	$ 296,309
Actual - Total Capital to Risk Weighted Assets Ratio (percentage)	17.40%	18.10%
Minimum Capital Requirement - Total Capital	$ 137,904	$ 130,832
Minimum Capital Requirement - Total Capital to Risk Weighted Assets Ratio (percentage)	8.00%	8.00%
Minimum to Be Well Capitalized - Total Capital	$ 172,380	$ 163,540
Minimum to Be Well Capitalized - Total Capital to Risk Weighted Assets Ratio (percentage)	10.00%	10.00%
Tier One Risk Based Capital [Abstract]
Actual - Tier 1 Capital to Risk Weighted Assets	$ 282,554	$ 279,207
Actual - Tier 1 Capital to Risk Weighted Assets Ratio (percentage)	16.40%	17.10%
Minimum Capital Requirement - Tier 1 Capital to Risk Weighted Assets	$ 103,428	$ 98,124
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	$ 137,903	$ 130,832
Minimum to Be Well Capitalized - Tier 1 Capital to Risk Weighted Assets Ratio (percentage)	8.00%	8.00%
Common Equity Risk Based Capital [Abstract]
Actual - Common Equity to Risk Weighted Assets	$ 282,554	$ 279,207
Actual - Common Equity to Risk Weighted Assets Ratio (percentage)	16.40%	17.10%
Minimum Capital Requirement - Common Equity to Risk Weighted Assets	$ 77,571	$ 73,593
Minimum Capital Requirement - Common Equity to Risk Weighted Assets Ratio (percentage)	4.50%
Minimum to Be Well Capitalized - Common Equity to Risk Weighted Assets	$ 112,047	$ 106,301
Minimum to Be Well Capitalized - Common Equity to Risk Weighted Assets Ratio (percentage)	6.50%	6.50%
Tier One Leverage Capital [Abstract]
Actual - Tier 1 Capital to Average Assets	$ 282,554	$ 279,207
Actual - Tier 1 Capital to Average Assets Ratio (percentage)	13.30%	14.00%
Minimum Capital Requirement - Tier 1 Capital to Average Assets	$ 85,218	$ 79,867
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	$ 106,522	$ 99,608
Minimum to Be Well Capitalized - Tier 1 Capital to Average Assets Ratio (percentage)	5.00%	5.00%

Stockholders' Equity -Additiona

Stockholders' Equity -Additional Information (Details)	Mar. 31, 2016	Dec. 31, 2015	Jan. 01, 2015	Dec. 31, 2014
Equity [Abstract]
Tier one common capital to risk weighted assets			4.50%
Tier one risk based capital required for capital adequacy to risk weighted assets	6.00%	6.00%	6.00%	4.00%
Tier one leverage capital required for capital adequacy to average assets	4.00%	4.00%	4.00%
Tier one capital conservation buffer common equity capital to risk weighted assets (greater than)			2.50%

Employee Stock Ownership Plan59

Employee Stock Ownership Plan (Details) - shares	Mar. 31, 2016	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Allocated	151,824	75,912
Committed to be allocated	18,925	75,912
Unallocated	2,105,921	2,124,846
Total	2,276,670	2,276,670

Employee Stock Ownership Plan A

Employee Stock Ownership Plan Additional information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
ESOP, Number of shares committed to be released annually	75,912
Fair Value of unallocated shares	$ 28,800		$ 32,500
ESOP expense	$ 265	$ 248

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Earnings Per Share [Abstract]
Net income applicable to common stock	$ 1,667	$ 1,306
Average number of common shares outstanding	27,181,469	28,466,813
Less: Average unallocated ESOP shares	(2,115,383)	(2,192,075)
Average number of common shares outstanding used to calculate basic earnings per common share	25,066,086	26,274,738
Effect of dilutive unvested restricted stock awards	66,355	0
Average number of common shares outstanding used to calculate diluted earnings per common share	25,132,441	26,274,738
Basic (dollars per share)	$ 0.07	$ 0.05
Diluted (dollars per share)	$ 0.07	$ 0.05
Antidilutive securities excluded from computation of earnings per share (shares)	2,479,000

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016USD ($)shares
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized | shares	2,846,681
Expected life (years)	6 years 6 months
Vesting period (years)	5 years
Share-based compensation expense | $	$ 511
Tax benefit related to share-based compensation expense | $	$ 125
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized | shares	1,138,673
Share-based compensation expense | $	$ 684
Tax benefit related to share-based compensation expense | $	$ 243
Granted (shares) | shares	31,450
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (shares) | shares	40,000
Maximum | Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (years)	10 years

Share-Based Compensation - Fair

Share-Based Compensation - Fair Value Assumptions (Details) - $ / shares	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (shares)	2,479,000	2,434,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (shares)	55,000
Vesting period (years)	5 years
Expected volatility (percent)	28.47%
Expected life (years)	6 years 6 months
Expected dividend yield (percent)	0.58%
Risk free interest rate (percent)	1.38%
Fair value per option (dollars per share)	$ 4.02

Share-Based Compensation - Stoc

Share-Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Beginning balance (shares)	2,434,000
Granted (shares)	55,000
Forfeited (shares)	(10,000)
Ending balance (shares)	2,479,000	2,434,000
Outstanding and expected to vest at end of period (shares)	2,454,401
Exercisable at end of period (shares)	0
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)	$ 14.07
Granted, weighted average exercise price (dollars per share)	13.80
Forfeited, weighted average exercise price (dollars per share)	14.07
Ending balance, weighted average exercise price (dollars per share)	14.06	$ 14.07
Outstanding and expected to vest at end of period, weighted average exercise price (dollars per share)	14.06
Exercisable at end of period, weighted average exercise price (dollars per share)	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Granted, weighted average remaining contractual term (years)
Outstanding, weighted average remaining contractual term (years)	9 years 6 months 11 days
Outstanding and expected to vest, weighted average remaining contractual term (years)	9 years 6 months 11 days
Granted, aggregate intrinsic value
Outstanding, aggregate intrinsic value	$ 0
Outstanding and expected to vest, aggregate intrinsic value	0
Exercisable, aggregate intrinsic value	$ 0
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Ending balance (shares)	55,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Unrecognized compensation cost	$ 9,489
Weighted average remaining recognition period (years)	4 years 6 months 11 days

Share-Based Compensation - Rest

Share-Based Compensation - Restricted Stock Activity (Details) - Restricted Stock $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016USD ($)$ / 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	983,175
Granted (shares) | shares	31,450
Forfeited (shares) | shares	7,500
Ending balance (shares) | shares	1,007,125
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	$ 14.07
Granted, weighted average exercise price (dollars per share) | $ / shares	13.83
Forfeited, weighted average exercise price (dollars per share) | $ / shares	14.07
Ending balance, weighted average exercise price (dollars per share) | $ / shares	$ 14.06
Unrecognized compensation cost inclusive of directors' fees | $	$ 12,828
Weighted average remaining recognition period (years)	4 years 6 months 15 days