Blue Hills Bancorp (BHBK) 10-Q 4 Aug 16 2016 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	6 Months Ended
	Jun. 30, 2016	Aug. 01, 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	Jun. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		27,336,342

Consolidated Balance Sheets (un

Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Assets
Cash and due from banks	$ 13,710	$ 10,932
Short-term investments	29,485	22,366
Total cash and cash equivalents	43,195	33,298
Securities available for sale, at fair value	204,973	231,690
Securities held to maturity, at amortized cost	196,454	200,141
Federal Home Loan Bank stock, at cost	12,833	13,567
Loans held for sale	6,097	12,877
Loans, net of allowance for loan losses of $18,079 at June 30, 2016 and $17,102 at December 31, 2015	1,667,059	1,523,275
Premises and equipment, net	20,136	20,015
Accrued interest receivable	5,640	5,344
Goodwill	9,160	9,160
Core deposit intangible	1,965	2,625
Net deferred tax asset	8,958	10,665
Bank-owned life insurance	31,558	31,626
Other assets	32,733	20,060
Total assets	2,240,761	2,114,343
Deposits:
Non-interest bearing	156,849	153,155
Interest bearing	1,444,057	1,280,694
Total deposits	1,600,906	1,433,849
Short-term borrowings	130,000	205,000
Long-term debt	85,000	55,000
Accrued expenses and other liabilities	32,903	21,665
Total liabilities	1,848,809	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; 27,397,842 and 28,492,732 issued and outstanding at June 30, 2016 and December 31, 2015, respectively)	265	276
Additional paid-in capital	255,781	269,078
Unearned compensation-ESOP	(20,876)	(21,255)
Retained earnings	157,714	155,918
Accumulated other comprehensive loss	(932)	(5,188)
Total stockholders' equity	391,952	398,829
Total liabilities and stockholders' equity	$ 2,240,761	$ 2,114,343

Consolidated Balance Sheets (u3

Consolidated Balance Sheets (unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Allowance for Loan Losses	$ 18,079	$ 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	27,397,842	28,492,732
Common stock, shares outstanding	27,397,842	28,492,732

Consolidated Statements of Inco

Consolidated Statements of Income (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Interest and dividend income:
Interest and fees on loans	$ 14,138	$ 10,759	$ 27,741	$ 21,186
Interest on securities	2,037	2,237	4,332	4,373
Dividends	155	112	294	212
Other	26	22	52	41
Total interest and dividend income	16,356	13,130	32,419	25,812
Interest expense:
Interest on deposits	2,484	1,745	4,776	3,508
Interest on borrowings	556	270	1,126	524
Total interest expense	3,040	2,015	5,902	4,032
Net interest and dividend income	13,316	11,115	26,517	21,780
Provision for loan losses	1,113	544	1,086	823
Net interest income, after provision for loan losses	12,203	10,571	25,431	20,957
Non-interest income:
Deposit account fees	307	335	624	668
Interchange and ATM fees	393	377	740	703
Mortgage banking	531	83	775	184
Loan level derivative income	322	770	961	774
Gains on sales and calls of available-for-sale securities	664	267	375	1,585
Gains on calls of held-to-maturity securities	0	0	45	0
Bank-owned life insurance income	257	252	514	505
Bank-owned life insurance death benefit gains	209	0	209	0
Miscellaneous	128	393	(55)	242
Total non-interest income	2,811	2,477	4,188	4,661
Non-interest expense:
Salaries and employee benefits	7,138	5,641	14,023	11,130
Occupancy and equipment	1,653	1,464	3,272	2,962
Data processing	803	843	1,564	1,662
Professional fees	678	667	1,159	1,299
Advertising	719	562	1,251	1,062
FDIC deposit insurance	352	253	698	545
Directors’ fees	399	93	737	217
Amortization of core deposit intangible	318	414	660	851
Other general and administrative	875	723	1,639	1,558
Total non-interest expense	12,935	10,660	25,003	21,286
Income before income taxes	2,079	2,388	4,616	4,332
Provision for income taxes	721	689	1,591	1,327
Net income	$ 1,358	$ 1,699	$ 3,025	$ 3,005
Earnings per common share:
Basic (dollars per share)	$ 0.06	$ 0.06	$ 0.12	$ 0.11
Diluted (dollars per share)	$ 0.05	$ 0.06	$ 0.12	$ 0.11
Weighted average shares outstanding:
Basic (shares)	24,575,211	26,293,560	24,817,260	26,284,201
Diluted (shares)	24,699,794	26,293,560	24,912,729	26,284,201

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income		$ 1,358	$ 1,699	$ 3,025	$ 3,005
Securities available for sale:
Change in unrealized holding gains (losses)		3,512	(4,793)	6,927	(631)
Reclassification adjustment for net gains realized in net income	[1]	(664)	(267)	(375)	(1,585)
Net change in unrealized gains (losses)		2,848	(5,060)	6,552	(2,216)
Tax effect		(994)	1,864	(2,288)	804
Net-of-tax amount		1,854	(3,196)	4,264	(1,412)
Securities held to maturity:
Reclassification adjustment for amortization of amounts previously recorded upon transfer from available-for-sale	[2]	(79)	0	(149)	0
Tax effect		28	0	53	0
Net-of-tax amount		(51)	0	(96)	0
Defined benefit pension plan:
Reclassification adjustment for net actuarial loss recognized in net periodic benefit cost	[3]	68	56	136	56
Tax effect		(24)	(22)	(48)	(22)
Net-of-tax amount		44	34	88	34
Other comprehensive income (loss)		1,847	(3,162)	4,256	(1,378)
Comprehensive income (loss)		$ 3,205	$ (1,463)	$ 7,281	$ 1,627
[1]	Amounts are included in gains on sales and calls of available-for-sale securities, net, in the consolidated statements of net income. Income tax expense associated with the reclassification adjustments for the three months ended June 30, 2016 and 2015 was $231,000 and $96,000, respectively. Income tax expense associated with the reclassification adjustments for the six months ended June 30, 2016 and 2015 was $131,000 and $557,000, 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		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Reclassification adjustment for net gains realized in net income, tax	$ 231	$ 96	$ 131	$ 557

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 (loss)
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	1,627				3,005	(1,378)
ESOP shares committed to be released	508		129	379
Ending balance at Jun. 30, 2015	413,741	$ 285	281,164	(21,635)	152,728	1,199
Ending balance (shares) at Jun. 30, 2015		28,466,813
Beginning balance at Mar. 31, 2015						4,361
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	(1,463)
Ending balance at Jun. 30, 2015	413,741	$ 285	281,164	(21,635)	152,728	1,199
Ending balance (shares) at Jun. 30, 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	7,281				3,025	4,256
ESOP shares committed to be released	541		162	379
Common stock dividends paid ($0.05 per common share)	(1,229)				(1,229)
Repurchase of common stock (shares)		(1,116,940)
Repurchase of common stock	(15,851)	$ (11)	(15,840)
Restricted stock grants (shares)		31,450
Restricted stock grants		$ 0	0
Restricted stock awards forfeited (shares)		(9,400)
Restricted stock awards forfeited		$ 0	0
Share-based compensation expense	2,381		2,381
Ending balance at Jun. 30, 2016	391,952	$ 265	255,781	(20,876)	157,714	(932)
Ending balance (shares) at Jun. 30, 2016		27,397,842
Beginning balance at Mar. 31, 2016						(2,779)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	3,205
Ending balance at Jun. 30, 2016	$ 391,952	$ 265	$ 255,781	$ (20,876)	$ 157,714	$ (932)
Ending balance (shares) at Jun. 30, 2016		27,397,842

Consolidated Statements of Cha8

Consolidated Statements of Changes in Stockholders' Equity (unaudited) (Parenthetical)	6 Months Ended
	Jun. 30, 2016$ / shares
Statement of Stockholders' Equity [Abstract]
Common stock paid (dollars per share)	$ 0.05

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income	$ 3,025	$ 3,005
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	1,086	823
Net amortization of securities	1,836	1,894
Gains on sales and calls of available-for-sale securities, net	(375)	(1,585)
Gains on calls of held-to-maturity securities	(45)	0
Net change in loans held for sale	(4,637)	10,969
Net amortization (accretion) of deferred loan origination costs and discounts	257	(91)
Depreciation and amortization of premises and equipment	951	862
Amortization of core deposit intangible	660	851
Bank-owned life insurance income	(723)	(505)
ESOP expense	541	508
Deferred tax expense	(576)	0
Share-based compensation expense	2,381	0
Net change in:
Accrued interest receivable	(296)	(445)
Other assets	(12,673)	3,656
Accrued expenses and other liabilities	11,374	(2,066)
Net cash provided by operating activities	2,786	17,876
Activity in securities available for sale:
Purchases	(30,305)	(126,698)
Sales	60,194	86,721
Maturities/calls	1,450	5,100
Principal paydowns	1,233	16,972
Activity in securities held to maturity:
Purchases	(23,366)	0
Maturities/calls	11,085	0
Principal paydowns	15,100	0
Loan originations and purchases, net of paydowns	(144,316)	(129,686)
Proceeds from residential portfolio loan sales	10,606	7,608
Net purchases of premises and equipment	(1,072)	(1,043)
Purchase of FHLBB stock	(2,855)	0
Redemption of FHLBB stock	3,589	0
Proceeds from bank-owned life insurance death benefit	791	0
Net cash used in investing activities	(97,866)	(141,026)
Cash flows from financing activities:
Net change in deposits, excluding brokered deposits	163,195	35,813
Net change in brokered deposits	3,862	25,593
Net change in short-term borrowings	(75,000)	55,000
Proceeds from long-term debt	30,000	0
Repurchase of common stock	(15,851)	0
Common stock dividends paid	(1,229)	0
Net cash provided by financing activities	104,977	116,406
Net change in cash and cash equivalents	9,897	(6,744)
Cash and cash equivalents at beginning of period	33,298	60,146
Cash and cash equivalents at end of period	43,195	53,402
Supplementary information:
Interest paid	5,822	4,038
Income taxes paid, net of refunds	$ 2,517	$ 2,450

Basis of Presentation and Conso

Basis of Presentation and Consolidation	6 Months Ended
	Jun. 30, 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. Prior to the second quarter of 2016, for portfolios for which the Company had insufficient prior loss experience, the national peer group losses for relevant portfolios generally over the years 2008-2015 were used. Commencing in the second quarter of 2016, the Company began to phase in its own loss history by loan type based upon the age and loss experience of the loan portfolio. While this change impacted the loss factors used for our Residential real estate, Home equity, Commercial real estate and Consumer loan portfolios, there was no material impact to the amount of the allowance for loan losses. Loss experience is updated at least quarterly. Loan losses are charged against the allowance when management believes the uncollectability of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses is evaluated regularly by management and reflects consideration of all significant factors that affect the collectability of the loan portfolio. The evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available. It is the intention of management to maintain an allowance that is prudently commensurate with the growth in the loan portfolio. The allowance consists of general, allocated and unallocated components, as further described below. General component The general component of the allowance for loan losses is based primarily on an 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	6 Months Ended
	Jun. 30, 2016
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Standards Updates	RECENT ACCOUNTING STANDARDS UPDATES On June 16, 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which adds a new Topic 326 to the Codification and removes the thresholds that companies apply to measure credit losses on financial instruments measured at amortized cost, such as loans, receivables, and held-to-maturity debt securities. Under current U.S. GAAP, companies generally recognize credit losses when it is probable that the loss has been incurred. The revised guidance will remove previously established recognition thresholds based on probability, and will require companies to recognize an allowance for credit losses for the difference between the amortized cost basis of a financial instrument and the net amount that the company expects to collect over the instrument’s contractual life. ASU 2016-13 also amends the credit loss measurement guidance for available-for-sale debt securities and will require that credit losses be recorded through an allowance for credit losses. The ASU is effective for fiscal years beginning after December 15, 2019 and for interim periods within those fiscal years. Management is currently evaluating the impact to the consolidated financial statements of adopting this Update.

Securities

Securities	6 Months Ended
	Jun. 30, 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: June 30, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Securities Available for Sale: Debt securities: Mortgage- and other asset-backed securities: Privately issued commercial mortgage-backed securities $ 12,087 $ 63 $ (57 ) $ 12,093 Other asset-backed securities 9,008 9 (179 ) 8,838 Total mortgage- and other asset-backed securities 21,095 72 (236 ) 20,931 State and political subdivisions 8,053 410 — 8,463 Financial services: Banks 17,373 316 (3 ) 17,686 Diversified financials 19,652 596 (10 ) 20,238 Insurance and REITs 15,959 378 (31 ) 16,306 Total financial services 52,984 1,290 (44 ) 54,230 Other corporate: Industrials 50,752 1,541 (139 ) 52,154 Utilities 25,626 756 (126 ) 26,256 Total other corporate 76,378 2,297 (265 ) 78,410 Total debt securities 158,510 4,069 (545 ) 162,034 Marketable equity securities: Mutual funds: Domestic community 3,216 128 (7 ) 3,337 Global asset allocation 42,396 9 (2,803 ) 39,602 Total marketable equity securities 45,612 137 (2,810 ) 42,939 Total securities available for sale $ 204,122 $ 4,206 $ (3,355 ) $ 204,973 Securities Held to Maturity: Debt securities: U.S. Treasury $ 612 $ 4 $ — $ 616 Government-sponsored enterprises 17,152 243 — 17,395 Government-sponsored mortgage-backed and collateralized mortgage obligations 163,414 2,371 (27 ) 165,758 SBA asset-backed securities 15,276 91 (171 ) 15,196 Total securities held to maturity $ 196,454 $ 2,709 $ (198 ) $ 198,965 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 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 June 30, 2016 , there are $422,000 of net holding gains remaining in accumulated other comprehensive loss. The amortized cost and estimated fair value of debt securities by contractual maturity at June 30, 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 $ 5,259 $ 5,268 $ 612 $ 616 After 1 year through 5 years 65,308 66,848 11,201 11,243 After 5 years through 10 years 60,234 62,168 5,951 6,152 After 10 years 6,614 6,819 — — 137,415 141,103 17,764 18,011 Mortgage- and asset-backed securities and collateralized mortgage obligations 21,095 20,931 178,690 180,954 $ 158,510 $ 162,034 $ 196,454 $ 198,965 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 June 30, 2016 and 2015 , proceeds from sales of securities available for sale amounted to $44.7 million and $18.7 million , respectively. Gross realized gains amounted to $1.2 million and $268,000 , respectively, and gross realized losses amounted to $552,000 and $1,000 , respectively. For the six months ended June 30, 2016 and 2015 , proceeds from sales of securities available for sale amounted to $60.2 million and $86.7 million , respectively. Gross realized gains amounted to $1.3 million and $1.6 million , respectively, and gross realized losses amounted to $974,000 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: June 30, 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 $ (6 ) $ 2,594 $ (51 ) $ 7,688 Other asset-backed (22 ) 2,110 (157 ) 3,748 Total mortgage- and other asset-backed securities (28 ) 4,704 (208 ) 11,436 Financial services: Banks (3 ) 1,366 — — Diversified financials (10 ) 566 — — Insurance and REITs — — (31 ) 1,315 Total financial services (13 ) 1,932 (31 ) 1,315 Other corporate: Industrials (7 ) 2,001 (132 ) 5,466 Utilities (93 ) 3,278 (33 ) 3,579 Total other corporate (100 ) 5,279 (165 ) 9,045 Total debt securities (141 ) 11,915 (404 ) 21,796 Marketable equity securities: Mutual funds: Domestic community — — (7 ) 459 Global asset allocation (2,803 ) 37,290 — — Total marketable equity securities (2,803 ) 37,290 (7 ) 459 Total temporarily impaired available-for-sale securities $ (2,944 ) $ 49,205 $ (411 ) $ 22,255 Securities Held to Maturity: Debt securities: Government-sponsored mortgage-backed and collateralized mortgage obligations $ (27 ) $ 5,500 $ — $ — SBA asset-backed securities (171 ) 7,745 — — Total temporarily impaired held-to-maturity securities $ (198 ) $ 13,245 $ — $ — At June 30, 2016 , multiple debt securities have unrealized losses with aggregate depreciation of less than 2.0% from the Company’s amortized cost basis. The unrealized losses were primarily caused by interest rate fluctuations. It is expected that none of these securities would be settled at a price less than the par value of the investment. Because the decline in fair value is attributable to changes in interest rates and not to credit quality, and 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 June 30, 2016 . At June 30, 2016 , the Company had several mutual funds with unrealized losses of $2.8 million , or 6.9% 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 available-for-sale 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	6 Months Ended
	Jun. 30, 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: June 30, December 31, 2016 2015 (In thousands) Real estate: 1-4 family residential $ 673,444 $ 599,938 Home equity 81,307 77,399 Commercial real estate 609,886 561,203 Construction 107,455 79,773 1,472,092 1,318,313 Commercial business 178,390 182,677 Consumer 33,072 38,186 Total loans 1,683,554 1,539,176 Allowance for loan losses (18,079 ) (17,102 ) Discount and fair value adjustments on purchased loans (1,922 ) (1,959 ) Deferred loan costs and fees, net 3,506 3,160 Loans, net $ 1,667,059 $ 1,523,275 Activity in the allowance for loan losses for the three and six months ended June 30, 2016 and 2015 , and allocation of the allowance to loan segments as of June 30, 2016 and December 31, 2015 , follows: 1-4 Family Home Commercial Construction Commercial Consumer Unallocated Total (In thousands) Three Months Ended June 30, 2016 Allowance at March 31, 2016 $ 3,665 $ 617 $ 7,338 $ 1,622 $ 2,619 $ 699 $ 425 $ 16,985 Provision (credit) for loan losses 275 (78 ) 284 125 671 (192 ) 28 1,113 Loans charged-off — — — — (8 ) (11 ) — (19 ) Recoveries — — — — — — — — Allowance at June 30, 2016 $ 3,940 $ 539 $ 7,622 $ 1,747 $ 3,282 $ 496 $ 453 $ 18,079 Three Months Ended June 30, 2015 Allowance at March 31, 2015 $ 3,215 $ 380 $ 3,722 $ 1,176 $ 3,332 $ 747 $ 666 $ 13,238 Provision (credit) for loan losses 192 39 846 (152 ) (341 ) (62 ) 22 544 Loans charged-off — — — — — (5 ) — (5 ) Recoveries — — — — — — — — Allowance at June 30, 2015 $ 3,407 $ 419 $ 4,568 $ 1,024 $ 2,991 $ 680 $ 688 $ 13,777 1-4 Family Residential Home Equity Commercial Real Estate Construction Commercial Business Consumer Unallocated Total (In thousands) Six Months Ended June 30, 2016 Allowance at December 31, 2015 $ 3,916 $ 636 $ 7,147 $ 1,364 $ 2,839 $ 772 $ 428 $ 17,102 Provision (credit) for loan losses 24 (97 ) 475 383 523 (247 ) 25 1,086 Loans charged-off — — — — (113 ) (29 ) — (142 ) Recoveries — — — — 33 — — 33 Allowance at June 30, 2016 $ 3,940 $ 539 $ 7,622 $ 1,747 $ 3,282 $ 496 $ 453 $ 18,079 Six Months Ended June 30, 2015 Allowance at December 31, 2014 $ 3,222 $ 340 $ 3,551 $ 1,056 $ 3,410 $ 736 $ 658 $ 12,973 Provision (credit) for loan losses 185 79 1,017 (32 ) (419 ) (37 ) 30 823 Loans charged-off — — — — — (19 ) — (19 ) Recoveries — — — — — — — — Allowance at June 30, 2015 $ 3,407 $ 419 $ 4,568 $ 1,024 $ 2,991 $ 680 $ 688 $ 13,777 Additional information pertaining to the allowance for loan losses at June 30, 2016 and December 31, 2015 is as follows: 1-4 Family Home Commercial Construction Commercial Consumer Unallocated Total (In thousands) June 30, 2016 Allowance related to impaired loans $ — $ — $ 36 $ — $ 522 $ — $ — $ 558 Allowance related to non-impaired loans 3,940 539 7,586 1,747 2,760 496 453 17,521 Total allowance for loan losses $ 3,940 $ 539 $ 7,622 $ 1,747 $ 3,282 $ 496 $ 453 $ 18,079 Impaired loans $ 6,489 $ 450 $ 5,322 $ — $ 3,037 $ 101 $ — $ 15,399 Non-impaired loans 666,955 80,857 604,564 107,455 175,353 32,971 — 1,668,155 Total loans $ 673,444 $ 81,307 $ 609,886 $ 107,455 $ 178,390 $ 33,072 $ — $ 1,683,554 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 June 30, 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) June 30, 2016 Real estate: 1-4 family residential $ 913 $ 1,608 $ 992 $ 3,513 $ 6,073 Home equity 449 250 257 956 450 Commercial real estate — 1,074 — 1,074 5,322 Commercial business — 249 2,788 3,037 3,037 Consumer 72 2 — 74 101 Total $ 1,434 $ 3,183 $ 4,037 $ 8,654 $ 14,983 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 June 30, 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 June 30, 2016 (In thousands) Impaired loans without a valuation allowance: Real estate: 1-4 family residential $ 6,489 $ 7,199 $ — Home equity 450 616 — Commercial real estate 4,248 4,328 — Commercial 19 19 — Consumer 101 109 — Total 11,307 12,271 — Impaired loans with a valuation allowance: Commercial real estate 1,074 1,074 36 Commercial business 3,018 3,018 522 Total 4,092 4,092 558 Total impaired loans $ 15,399 $ 16,363 $ 558 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 June 30, 2016 (In thousands) Real estate: 1-4 family residential $ 6,508 $ 72 Home equity 381 4 Commercial real estate 4,819 38 Consumer 155 3 Commercial 1,519 — Total $ 13,382 $ 117 Three Months Ended June 30, 2015 Real estate: 1-4 family residential $ 4,588 $ 76 Home equity 647 8 Consumer 35 2 Total $ 5,270 $ 86 Six Months Ended June 30, 2016 Real estate: 1-4 family residential $ 6,377 $ 145 Home equity 344 8 Commercial real estate 4,756 94 Consumer 151 5 Commercial 2,248 31 Total $ 13,876 $ 283 Six Months Ended June 30, 2015 Real estate: 1-4 family residential $ 4,532 $ 143 Home equity 624 14 Consumer 32 2 Total $ 5,188 $ 159 No additional funds are committed to be advanced in connection with impaired loans. There were no significant troubled debt restructurings recorded during the three and six months ended June 30, 2016 or 2015. 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 June 30, 2016 and December 31, 2015 : 1-4 Family Residential Home Equity Commercial Real Estate Construction Commercial Business Consumer Total Loans (In thousands) June 30, 2016 Loans rated 1 - 6 $ 1,926 $ 300 $ 595,200 $ 107,455 $ 172,122 $ 5 $ 877,008 Loans rated 7 3,921 508 8,296 — 3,230 76 16,031 Loans rated 8 2,018 136 6,390 — 3,038 28 11,610 Loans rated 9 696 — — — — — 696 Loans rated 10 — — — — — — — Loans not rated 664,883 80,363 — — — 32,963 778,209 $ 673,444 $ 81,307 $ 609,886 $ 107,455 $ 178,390 $ 33,072 $ 1,683,554 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	6 Months Ended
	Jun. 30, 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 June 30, 2016 and December 31, 2015 . Derivative Gains Derivative Losses Notional Amount Fair Value Notional Amount Fair Value (In thousands) June 30, 2016 Economic hedges: Commercial loan level interest rate swap agreements $ 339,307 $ 20,468 $ 339,307 $ 21,630 Other contracts 16,102 41 27,943 154 Total derivatives $ 355,409 $ 20,509 $ 367,250 $ 21,784 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	6 Months Ended
	Jun. 30, 2016
Banking and Thrift [Abstract]
Deposits	DEPOSITS A summary of deposit balances, by type, is as follows: June 30, December 31, 2016 2015 (In thousands) NOW and demand $ 298,178 $ 288,143 Regular savings 274,866 287,344 Money market 506,251 368,050 Brokered money market 45,231 41,807 Total non-certificate accounts 1,124,526 985,344 Term certificates of $250,000 or more 79,996 65,364 Term certificates less than $250,000 259,419 246,614 Brokered term certificates 136,965 136,527 Total certificate accounts 476,380 448,505 Total deposits $ 1,600,906 $ 1,433,849 At June 30, 2016 , the scheduled maturities of term certificate accounts, including brokered deposits, are as follows: Amount Weighted Average Rate (Dollars in thousands) Within 1 year $ 246,972 0.65 % 1-2 years 91,942 1.18 2-3 years 49,136 1.38 3-4 years 66,744 2.00 4 years and beyond 21,586 1.84 $ 476,380 1.07 %

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 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 June 30, 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) June 30, 2016 Assets Securities available for sale: Debt securities $ — $ 162,034 $ — $ 162,034 Marketable equity securities 42,939 — — 42,939 Derivative assets — 20,509 — 20,509 Total assets $ 42,939 $ 182,543 $ — $ 225,482 Liabilities Derivative liabilities $ — $ 21,784 $ — $ 21,784 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 non-recurring basis in accordance with generally accepted accounting principles. These adjustments to fair value usually result from application of lower-of-cost-or-market accounting or write-downs of individual assets. There are no liabilities measured at fair value on a non-recurring basis. The following table summarizes the fair value hierarchy applicable to assets measured at fair value on a non-recurring basis: June 30, 2016 December 31, 2015 Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 (In thousands) Impaired loans $ — $ — $ 3,534 $ — $ — $ 4,752 The following table summarizes the total losses on assets measured at fair value on a non-recurring basis for the three and six months ended June 30, 2016 . Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 (In thousands) Impaired loans $ 528 $ — $ 307 $ — 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) June 30, 2016 Financial assets: Cash and cash equivalents $ 43,195 $ 43,195 $ — $ — $ 43,195 Securities available for sale 204,973 42,939 162,034 — 204,973 Securities held to maturity 196,454 616 198,349 198,965 Federal Home Loan Bank stock 12,833 — — 12,833 12,833 Loans and loans held for sale 1,673,156 — — 1,683,548 1,683,548 Accrued interest receivable 5,640 — — 5,640 5,640 Financial liabilities: Deposits 1,600,906 — — 1,604,586 1,604,586 Borrowings 215,000 — 215,660 — 215,660 On-balance sheet derivative financial instruments: Interest rate swap agreements: Assets 20,509 — 20,509 — 20,509 Liabilities 21,784 — 21,784 — 21,784 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	6 Months Ended
	Jun. 30, 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: June 30, December 31, 2016 2015 (In thousands) Securities available for sale: Net unrealized gain (loss) $ 851 $ (5,701 ) Tax effect (343 ) 1,945 Net-of-tax amount 508 (3,756 ) Securities held to maturity: Net unrealized gain on transferred securities 422 571 Tax effect (144 ) (197 ) Net-of-tax amount 278 374 Defined benefit pension plan: Unrecognized net actuarial loss (2,722 ) (2,858 ) Tax effect 1,004 1,052 Net-of-tax amount (1,718 ) (1,806 ) $ (932 ) $ (5,188 ) Changes in accumulated other comprehensive income (loss), by component, follow: Three Months Ended June 30, 2016 Securities Available for Sale Securities Held to Maturity Defined Benefit Pension Plan Total (In thousands) Balance at March 31, 2016 $ (1,346 ) 329 $ (1,762 ) $ (2,779 ) Other comprehensive income before reclassification adjustments 3,512 — — 3,512 Reclassification adjustments: Net realized gains (664 ) — — (664 ) Amortization of actuarial losses — — 68 68 Amortization of amounts previously recorded upon transfer from available for sale — (79 ) — (79 ) Tax effects (994 ) 28 (24 ) (990 ) Net current-period other comprehensive income (loss) 1,854 (51 ) 44 1,847 Balance at June 30, 2016 $ 508 $ 278 $ (1,718 ) $ (932 ) Three Months Ended June 30, 2015 Securities Available for Sale Securities Held to Maturity Defined Benefit Pension Plan Total (In thousands) Balance at March 31, 2015 $ 5,176 $ — $ (815 ) $ 4,361 Other comprehensive loss before reclassification adjustments (4,793 ) — — (4,793 ) Reclassification adjustments: Net realized gains (267 ) — — (267 ) Amortization of actuarial losses — — 56 56 Tax effects 1,864 — (22 ) 1,842 Net current-period other comprehensive income (loss) (3,196 ) — 34 (3,162 ) Balance at June 30, 2015 $ 1,980 $ — $ (781 ) $ 1,199 Six Months Ended June 30, 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 6,927 — — 6,927 Reclassification adjustments: Net realized gains (375 ) — — (375 ) Amortization of actuarial losses — — 136 136 Amortization of amounts previously recorded upon transfer from available-for-sale — (149 ) — (149 ) Tax effects (2,288 ) 53 (48 ) (2,283 ) Net current-period other comprehensive income (loss) 4,264 (96 ) 88 4,256 Balance at June 30, 2016 $ 508 $ 278 $ (1,718 ) $ (932 ) Six Months Ended June 30, 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 loss before reclassification adjustments (631 ) — — (631 ) Reclassification adjustments: Net realized gains (1,585 ) — — (1,585 ) Amortization of actuarial losses — — 56 56 Tax effects 804 — (22 ) 782 Net current-period other comprehensive income (loss) (1,412 ) — 34 (1,378 ) Balance at June 30, 2015 $ 1,980 $ — $ (781 ) $ 1,199

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jun. 30, 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 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 include 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 is being phased in over three years , commencing 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 June 30, 2016 . As of June 30, 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 June 30, 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 June 30, 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.: June 30, 2016 Total capital (to risk weighted assets) $ 396,157 22.3 % $ 142,379 8.0 % 177,974 10.0 % Tier 1 capital (to risk weighted assets) 378,078 21.2 106,784 6.0 142,379 8.0 Common equity Tier 1 (to risk weighted assets) 378,078 21.2 80,088 4.5 115,683 6.5 Tier 1 capital (to average assets) 378,078 17.3 87,294 4.0 109,117 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: June 30, 2016 Total capital (to risk weighted assets) $ 303,796 17.1 % $ 142,131 8.0 % $ 177,664 10.0 % Tier 1 capital (to risk weighted assets) 285,717 16.1 106,598 6.0 142,131 8.0 Common equity Tier 1 (to risk weighted assets) 285,717 16.1 79,949 4.5 115,481 6.5 Tier 1 capital (to average assets) 285,717 13.1 87,238 4.0 109,047 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	6 Months Ended
	Jun. 30, 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: June 30, 2016 December 31, 2015 Allocated 150,229 75,912 Committed to be allocated 37,852 75,912 Unallocated 2,087,667 2,124,846 2,275,748 2,276,670 The fair value of unallocated shares was approximately $30.8 million and $32.5 million at June 30, 2016 and December 31, 2015 , respectively. Total compensation expense recognized in connection with the ESOP for the three months ended June 30, 2016 and June 30, 2015 was $276,000 and $259,000 , respectively. Total compensation expense recognized for the six months ended June 30, 2016 and June 30, 2015 was $541,000 and $508,000 , respectively.

Earnings Per Common Share

Earnings Per Common Share	6 Months Ended
	Jun. 30, 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. Three Months Ended June 30, 2016 June 30, 2015 (In thousands, except share amounts) Net income applicable to common stock $ 1,358 $ 1,699 Average number of common shares outstanding 26,672,005 28,466,813 Less: Average unallocated ESOP shares (2,096,794 ) (2,173,253 ) Average number of common shares outstanding used to calculate basic earnings per common share 24,575,211 26,293,560 Effect of dilutive unvested restricted stock awards 124,583 — Average number of common shares outstanding used to calculate diluted earnings per common share 24,699,794 26,293,560 Earnings per common share: Basic $ 0.06 $ 0.06 Diluted $ 0.05 $ 0.06 Six Months Ended June 30, 2016 June 30, 2015 (In thousands, except share amounts) Net income applicable to common stock $ 3,025 $ 3,005 Average number of common shares outstanding 26,923,517 28,466,813 Less: Average unallocated ESOP shares (2,106,257 ) (2,182,612 ) Average number of common shares outstanding used to calculate basic earnings per common share 24,817,260 26,284,201 Effect of dilutive unvested restricted stock awards 95,469 — Average number of common shares outstanding used to calculate diluted earnings per common share 24,912,729 26,284,201 Earnings per common share: Basic $ 0.12 $ 0.11 Diluted $ 0.12 $ 0.11 Options for 2,462,350 shares were not included in the computation of diluted earnings per common share because to do so would have been antidilutive for the three and six months ended June 30, 2016 .

Share-Based Compensation

Share-Based Compensation	6 Months Ended
	Jun. 30, 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 six 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 June 30, 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 (26,650 ) 14.07 — Balance at June 30, 2016 2,462,350 $ 14.06 9.29 $ 1,713,872 Outstanding and expected to vest at June 30, 2016 2,405,848 $ 14.06 9.29 $ 1,674,886 Exercisable at June 30, 2016 — $ — — $ — Unrecognized compensation cost at June 30, 2016 $ 8,728,000 Weighted average remaining recognition period (years) 4.28 For the three and six months ended June 30, 2016 , share-based compensation expense applicable to the stock options was $485,000 and $ 996,000 , respectively, and the recognized tax benefit related to this expense was $125,000 and $250,000 . There was no share-based compensation expense related to stock options for the three and six months June 30, 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 40,000 are performance based. The following table presents the activity in non-vested stock awards under the Equity Plan for the quarter ended June 30, 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 (9,400 ) 14.07 Nonvested stock awards at June 30, 2016 1,005,225 $ 14.06 Unrecognized compensation cost inclusive of directors' fees at June 30,2016 $12,100,000 Weighted average remaining recognition period (years) 4.29 For the three and six months ended June 30, 2016 , share-based compensation expense applicable to restricted stock awards was $ 701,000 and $1,385,000 respectively, and the recognized tax benefit related to this expense was $247,000 and $489,000 respectively. There was no share-based compensation expense related to restricted stock awards for three and six months ended June 30, 2015 .

Basis of Presentation and Con22

Basis of Presentation and Consolidation (Policies)	6 Months Ended
	Jun. 30, 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.
Loan policies	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. Prior to the second quarter of 2016, for portfolios for which the Company had insufficient prior loss experience, the national peer group losses for relevant portfolios generally over the years 2008-2015 were used. Commencing in the second quarter of 2016, the Company began to phase in its own loss history by loan type based upon the age and loss experience of the loan portfolio. While this change impacted the loss factors used for our Residential real estate, Home equity, Commercial real estate and Consumer loan portfolios, there was no material impact to the amount of the allowance for loan losses. Loss experience is updated at least quarterly. Loan losses are charged against the allowance when management believes the uncollectability of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses is evaluated regularly by management and reflects consideration of all significant factors that affect the collectability of the loan portfolio. The evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available. It is the intention of management to maintain an allowance that is prudently commensurate with the growth in the loan portfolio. The allowance consists of general, allocated and unallocated components, as further described below. General component The general component of the allowance for loan losses is based primarily on an 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 On June 16, 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which adds a new Topic 326 to the Codification and removes the thresholds that companies apply to measure credit losses on financial instruments measured at amortized cost, such as loans, receivables, and held-to-maturity debt securities. Under current U.S. GAAP, companies generally recognize credit losses when it is probable that the loss has been incurred. The revised guidance will remove previously established recognition thresholds based on probability, and will require companies to recognize an allowance for credit losses for the difference between the amortized cost basis of a financial instrument and the net amount that the company expects to collect over the instrument’s contractual life. ASU 2016-13 also amends the credit loss measurement guidance for available-for-sale debt securities and will require that credit losses be recorded through an allowance for credit losses. The ASU is effective for fiscal years beginning after December 15, 2019 and for interim periods within those fiscal years. Management is currently evaluating the impact to the consolidated financial statements of adopting this Update.

Securities (Tables)

Securities (Tables)	6 Months Ended
	Jun. 30, 2016
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities	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 The amortized cost and estimated fair value of securities available for sale, with gross unrealized gains and losses, follows: June 30, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In thousands) Securities Available for Sale: Debt securities: Mortgage- and other asset-backed securities: Privately issued commercial mortgage-backed securities $ 12,087 $ 63 $ (57 ) $ 12,093 Other asset-backed securities 9,008 9 (179 ) 8,838 Total mortgage- and other asset-backed securities 21,095 72 (236 ) 20,931 State and political subdivisions 8,053 410 — 8,463 Financial services: Banks 17,373 316 (3 ) 17,686 Diversified financials 19,652 596 (10 ) 20,238 Insurance and REITs 15,959 378 (31 ) 16,306 Total financial services 52,984 1,290 (44 ) 54,230 Other corporate: Industrials 50,752 1,541 (139 ) 52,154 Utilities 25,626 756 (126 ) 26,256 Total other corporate 76,378 2,297 (265 ) 78,410 Total debt securities 158,510 4,069 (545 ) 162,034 Marketable equity securities: Mutual funds: Domestic community 3,216 128 (7 ) 3,337 Global asset allocation 42,396 9 (2,803 ) 39,602 Total marketable equity securities 45,612 137 (2,810 ) 42,939 Total securities available for sale $ 204,122 $ 4,206 $ (3,355 ) $ 204,973
Held-to-maturity Securities	Securities Held to Maturity: Debt securities: U.S. Treasury $ 612 $ 4 $ — $ 616 Government-sponsored enterprises 17,152 243 — 17,395 Government-sponsored mortgage-backed and collateralized mortgage obligations 163,414 2,371 (27 ) 165,758 SBA asset-backed securities 15,276 91 (171 ) 15,196 Total securities held to maturity $ 196,454 $ 2,709 $ (198 ) $ 198,965 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
Investments Classified by Contractual Maturity Date	The amortized cost and estimated fair value of debt securities by contractual maturity at June 30, 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 $ 5,259 $ 5,268 $ 612 $ 616 After 1 year through 5 years 65,308 66,848 11,201 11,243 After 5 years through 10 years 60,234 62,168 5,951 6,152 After 10 years 6,614 6,819 — — 137,415 141,103 17,764 18,011 Mortgage- and asset-backed securities and collateralized mortgage obligations 21,095 20,931 178,690 180,954 $ 158,510 $ 162,034 $ 196,454 $ 198,965
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 available-for-sale 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: June 30, 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 $ (6 ) $ 2,594 $ (51 ) $ 7,688 Other asset-backed (22 ) 2,110 (157 ) 3,748 Total mortgage- and other asset-backed securities (28 ) 4,704 (208 ) 11,436 Financial services: Banks (3 ) 1,366 — — Diversified financials (10 ) 566 — — Insurance and REITs — — (31 ) 1,315 Total financial services (13 ) 1,932 (31 ) 1,315 Other corporate: Industrials (7 ) 2,001 (132 ) 5,466 Utilities (93 ) 3,278 (33 ) 3,579 Total other corporate (100 ) 5,279 (165 ) 9,045 Total debt securities (141 ) 11,915 (404 ) 21,796 Marketable equity securities: Mutual funds: Domestic community — — (7 ) 459 Global asset allocation (2,803 ) 37,290 — — Total marketable equity securities (2,803 ) 37,290 (7 ) 459 Total temporarily impaired available-for-sale securities $ (2,944 ) $ 49,205 $ (411 ) $ 22,255
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 $ (27 ) $ 5,500 $ — $ — SBA asset-backed securities (171 ) 7,745 — — Total temporarily impaired held-to-maturity securities $ (198 ) $ 13,245 $ — $ —

Loans and The Allowance for L24

Loans and The Allowance for Loan Losses (Tables)	6 Months Ended
	Jun. 30, 2016
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	A summary of the balances of loans follows: June 30, December 31, 2016 2015 (In thousands) Real estate: 1-4 family residential $ 673,444 $ 599,938 Home equity 81,307 77,399 Commercial real estate 609,886 561,203 Construction 107,455 79,773 1,472,092 1,318,313 Commercial business 178,390 182,677 Consumer 33,072 38,186 Total loans 1,683,554 1,539,176 Allowance for loan losses (18,079 ) (17,102 ) Discount and fair value adjustments on purchased loans (1,922 ) (1,959 ) Deferred loan costs and fees, net 3,506 3,160 Loans, net $ 1,667,059 $ 1,523,275
Activity in Allowance for Loan Losses	Activity in the allowance for loan losses for the three and six months ended June 30, 2016 and 2015 , and allocation of the allowance to loan segments as of June 30, 2016 and December 31, 2015 , follows: 1-4 Family Home Commercial Construction Commercial Consumer Unallocated Total (In thousands) Three Months Ended June 30, 2016 Allowance at March 31, 2016 $ 3,665 $ 617 $ 7,338 $ 1,622 $ 2,619 $ 699 $ 425 $ 16,985 Provision (credit) for loan losses 275 (78 ) 284 125 671 (192 ) 28 1,113 Loans charged-off — — — — (8 ) (11 ) — (19 ) Recoveries — — — — — — — — Allowance at June 30, 2016 $ 3,940 $ 539 $ 7,622 $ 1,747 $ 3,282 $ 496 $ 453 $ 18,079 Three Months Ended June 30, 2015 Allowance at March 31, 2015 $ 3,215 $ 380 $ 3,722 $ 1,176 $ 3,332 $ 747 $ 666 $ 13,238 Provision (credit) for loan losses 192 39 846 (152 ) (341 ) (62 ) 22 544 Loans charged-off — — — — — (5 ) — (5 ) Recoveries — — — — — — — — Allowance at June 30, 2015 $ 3,407 $ 419 $ 4,568 $ 1,024 $ 2,991 $ 680 $ 688 $ 13,777 1-4 Family Residential Home Equity Commercial Real Estate Construction Commercial Business Consumer Unallocated Total (In thousands) Six Months Ended June 30, 2016 Allowance at December 31, 2015 $ 3,916 $ 636 $ 7,147 $ 1,364 $ 2,839 $ 772 $ 428 $ 17,102 Provision (credit) for loan losses 24 (97 ) 475 383 523 (247 ) 25 1,086 Loans charged-off — — — — (113 ) (29 ) — (142 ) Recoveries — — — — 33 — — 33 Allowance at June 30, 2016 $ 3,940 $ 539 $ 7,622 $ 1,747 $ 3,282 $ 496 $ 453 $ 18,079 Six Months Ended June 30, 2015 Allowance at December 31, 2014 $ 3,222 $ 340 $ 3,551 $ 1,056 $ 3,410 $ 736 $ 658 $ 12,973 Provision (credit) for loan losses 185 79 1,017 (32 ) (419 ) (37 ) 30 823 Loans charged-off — — — — — (19 ) — (19 ) Recoveries — — — — — — — — Allowance at June 30, 2015 $ 3,407 $ 419 $ 4,568 $ 1,024 $ 2,991 $ 680 $ 688 $ 13,777
Allowance for Credit Losses on Financing Receivables	Additional information pertaining to the allowance for loan losses at June 30, 2016 and December 31, 2015 is as follows: 1-4 Family Home Commercial Construction Commercial Consumer Unallocated Total (In thousands) June 30, 2016 Allowance related to impaired loans $ — $ — $ 36 $ — $ 522 $ — $ — $ 558 Allowance related to non-impaired loans 3,940 539 7,586 1,747 2,760 496 453 17,521 Total allowance for loan losses $ 3,940 $ 539 $ 7,622 $ 1,747 $ 3,282 $ 496 $ 453 $ 18,079 Impaired loans $ 6,489 $ 450 $ 5,322 $ — $ 3,037 $ 101 $ — $ 15,399 Non-impaired loans 666,955 80,857 604,564 107,455 175,353 32,971 — 1,668,155 Total loans $ 673,444 $ 81,307 $ 609,886 $ 107,455 $ 178,390 $ 33,072 $ — $ 1,683,554 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 June 30, 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) June 30, 2016 Real estate: 1-4 family residential $ 913 $ 1,608 $ 992 $ 3,513 $ 6,073 Home equity 449 250 257 956 450 Commercial real estate — 1,074 — 1,074 5,322 Commercial business — 249 2,788 3,037 3,037 Consumer 72 2 — 74 101 Total $ 1,434 $ 3,183 $ 4,037 $ 8,654 $ 14,983 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 June 30, 2016 (In thousands) Impaired loans without a valuation allowance: Real estate: 1-4 family residential $ 6,489 $ 7,199 $ — Home equity 450 616 — Commercial real estate 4,248 4,328 — Commercial 19 19 — Consumer 101 109 — Total 11,307 12,271 — Impaired loans with a valuation allowance: Commercial real estate 1,074 1,074 36 Commercial business 3,018 3,018 522 Total 4,092 4,092 558 Total impaired loans $ 15,399 $ 16,363 $ 558 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 June 30, 2016 (In thousands) Real estate: 1-4 family residential $ 6,508 $ 72 Home equity 381 4 Commercial real estate 4,819 38 Consumer 155 3 Commercial 1,519 — Total $ 13,382 $ 117 Three Months Ended June 30, 2015 Real estate: 1-4 family residential $ 4,588 $ 76 Home equity 647 8 Consumer 35 2 Total $ 5,270 $ 86 Six Months Ended June 30, 2016 Real estate: 1-4 family residential $ 6,377 $ 145 Home equity 344 8 Commercial real estate 4,756 94 Consumer 151 5 Commercial 2,248 31 Total $ 13,876 $ 283 Six Months Ended June 30, 2015 Real estate: 1-4 family residential $ 4,532 $ 143 Home equity 624 14 Consumer 32 2 Total $ 5,188 $ 159
Financing Receivable Credit Quality Indicators	The following tables present the Company’s loans by risk rating at June 30, 2016 and December 31, 2015 : 1-4 Family Residential Home Equity Commercial Real Estate Construction Commercial Business Consumer Total Loans (In thousands) June 30, 2016 Loans rated 1 - 6 $ 1,926 $ 300 $ 595,200 $ 107,455 $ 172,122 $ 5 $ 877,008 Loans rated 7 3,921 508 8,296 — 3,230 76 16,031 Loans rated 8 2,018 136 6,390 — 3,038 28 11,610 Loans rated 9 696 — — — — — 696 Loans rated 10 — — — — — — — Loans not rated 664,883 80,363 — — — 32,963 778,209 $ 673,444 $ 81,307 $ 609,886 $ 107,455 $ 178,390 $ 33,072 $ 1,683,554 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)	6 Months Ended
	Jun. 30, 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 June 30, 2016 and December 31, 2015 . Derivative Gains Derivative Losses Notional Amount Fair Value Notional Amount Fair Value (In thousands) June 30, 2016 Economic hedges: Commercial loan level interest rate swap agreements $ 339,307 $ 20,468 $ 339,307 $ 21,630 Other contracts 16,102 41 27,943 154 Total derivatives $ 355,409 $ 20,509 $ 367,250 $ 21,784 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)	6 Months Ended
	Jun. 30, 2016
Banking and Thrift [Abstract]
Schedule of Deposit Balances	A summary of deposit balances, by type, is as follows: June 30, December 31, 2016 2015 (In thousands) NOW and demand $ 298,178 $ 288,143 Regular savings 274,866 287,344 Money market 506,251 368,050 Brokered money market 45,231 41,807 Total non-certificate accounts 1,124,526 985,344 Term certificates of $250,000 or more 79,996 65,364 Term certificates less than $250,000 259,419 246,614 Brokered term certificates 136,965 136,527 Total certificate accounts 476,380 448,505 Total deposits $ 1,600,906 $ 1,433,849
Schedule of Contractual Maturities of Deposits and Weighted Average Rate	At June 30, 2016 , the scheduled maturities of term certificate accounts, including brokered deposits, are as follows: Amount Weighted Average Rate (Dollars in thousands) Within 1 year $ 246,972 0.65 % 1-2 years 91,942 1.18 2-3 years 49,136 1.38 3-4 years 66,744 2.00 4 years and beyond 21,586 1.84 $ 476,380 1.07 %

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 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) June 30, 2016 Assets Securities available for sale: Debt securities $ — $ 162,034 $ — $ 162,034 Marketable equity securities 42,939 — — 42,939 Derivative assets — 20,509 — 20,509 Total assets $ 42,939 $ 182,543 $ — $ 225,482 Liabilities Derivative liabilities $ — $ 21,784 $ — $ 21,784 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 Measurements, Nonrecurring	The following table summarizes the fair value hierarchy applicable to assets measured at fair value on a non-recurring basis: June 30, 2016 December 31, 2015 Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 (In thousands) Impaired loans $ — $ — $ 3,534 $ — $ — $ 4,752 The following table summarizes the total losses on assets measured at fair value on a non-recurring basis for the three and six months ended June 30, 2016 . Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 (In thousands) Impaired loans $ 528 $ — $ 307 $ —
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) June 30, 2016 Financial assets: Cash and cash equivalents $ 43,195 $ 43,195 $ — $ — $ 43,195 Securities available for sale 204,973 42,939 162,034 — 204,973 Securities held to maturity 196,454 616 198,349 198,965 Federal Home Loan Bank stock 12,833 — — 12,833 12,833 Loans and loans held for sale 1,673,156 — — 1,683,548 1,683,548 Accrued interest receivable 5,640 — — 5,640 5,640 Financial liabilities: Deposits 1,600,906 — — 1,604,586 1,604,586 Borrowings 215,000 — 215,660 — 215,660 On-balance sheet derivative financial instruments: Interest rate swap agreements: Assets 20,509 — 20,509 — 20,509 Liabilities 21,784 — 21,784 — 21,784 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)	6 Months Ended
	Jun. 30, 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: June 30, December 31, 2016 2015 (In thousands) Securities available for sale: Net unrealized gain (loss) $ 851 $ (5,701 ) Tax effect (343 ) 1,945 Net-of-tax amount 508 (3,756 ) Securities held to maturity: Net unrealized gain on transferred securities 422 571 Tax effect (144 ) (197 ) Net-of-tax amount 278 374 Defined benefit pension plan: Unrecognized net actuarial loss (2,722 ) (2,858 ) Tax effect 1,004 1,052 Net-of-tax amount (1,718 ) (1,806 ) $ (932 ) $ (5,188 ) Changes in accumulated other comprehensive income (loss), by component, follow: Three Months Ended June 30, 2016 Securities Available for Sale Securities Held to Maturity Defined Benefit Pension Plan Total (In thousands) Balance at March 31, 2016 $ (1,346 ) 329 $ (1,762 ) $ (2,779 ) Other comprehensive income before reclassification adjustments 3,512 — — 3,512 Reclassification adjustments: Net realized gains (664 ) — — (664 ) Amortization of actuarial losses — — 68 68 Amortization of amounts previously recorded upon transfer from available for sale — (79 ) — (79 ) Tax effects (994 ) 28 (24 ) (990 ) Net current-period other comprehensive income (loss) 1,854 (51 ) 44 1,847 Balance at June 30, 2016 $ 508 $ 278 $ (1,718 ) $ (932 ) Three Months Ended June 30, 2015 Securities Available for Sale Securities Held to Maturity Defined Benefit Pension Plan Total (In thousands) Balance at March 31, 2015 $ 5,176 $ — $ (815 ) $ 4,361 Other comprehensive loss before reclassification adjustments (4,793 ) — — (4,793 ) Reclassification adjustments: Net realized gains (267 ) — — (267 ) Amortization of actuarial losses — — 56 56 Tax effects 1,864 — (22 ) 1,842 Net current-period other comprehensive income (loss) (3,196 ) — 34 (3,162 ) Balance at June 30, 2015 $ 1,980 $ — $ (781 ) $ 1,199 Six Months Ended June 30, 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 6,927 — — 6,927 Reclassification adjustments: Net realized gains (375 ) — — (375 ) Amortization of actuarial losses — — 136 136 Amortization of amounts previously recorded upon transfer from available-for-sale — (149 ) — (149 ) Tax effects (2,288 ) 53 (48 ) (2,283 ) Net current-period other comprehensive income (loss) 4,264 (96 ) 88 4,256 Balance at June 30, 2016 $ 508 $ 278 $ (1,718 ) $ (932 ) Six Months Ended June 30, 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 loss before reclassification adjustments (631 ) — — (631 ) Reclassification adjustments: Net realized gains (1,585 ) — — (1,585 ) Amortization of actuarial losses — — 56 56 Tax effects 804 — (22 ) 782 Net current-period other comprehensive income (loss) (1,412 ) — 34 (1,378 ) Balance at June 30, 2015 $ 1,980 $ — $ (781 ) $ 1,199

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Jun. 30, 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.: June 30, 2016 Total capital (to risk weighted assets) $ 396,157 22.3 % $ 142,379 8.0 % 177,974 10.0 % Tier 1 capital (to risk weighted assets) 378,078 21.2 106,784 6.0 142,379 8.0 Common equity Tier 1 (to risk weighted assets) 378,078 21.2 80,088 4.5 115,683 6.5 Tier 1 capital (to average assets) 378,078 17.3 87,294 4.0 109,117 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: June 30, 2016 Total capital (to risk weighted assets) $ 303,796 17.1 % $ 142,131 8.0 % $ 177,664 10.0 % Tier 1 capital (to risk weighted assets) 285,717 16.1 106,598 6.0 142,131 8.0 Common equity Tier 1 (to risk weighted assets) 285,717 16.1 79,949 4.5 115,481 6.5 Tier 1 capital (to average assets) 285,717 13.1 87,238 4.0 109,047 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)	6 Months Ended
	Jun. 30, 2016
Compensation and Retirement Disclosure [Abstract]
Employee Stock Ownership Plan (ESOP) Disclosures	Shares held by the ESOP include the following: June 30, 2016 December 31, 2015 Allocated 150,229 75,912 Committed to be allocated 37,852 75,912 Unallocated 2,087,667 2,124,846 2,275,748 2,276,670

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	6 Months Ended
	Jun. 30, 2016
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Three Months Ended June 30, 2016 June 30, 2015 (In thousands, except share amounts) Net income applicable to common stock $ 1,358 $ 1,699 Average number of common shares outstanding 26,672,005 28,466,813 Less: Average unallocated ESOP shares (2,096,794 ) (2,173,253 ) Average number of common shares outstanding used to calculate basic earnings per common share 24,575,211 26,293,560 Effect of dilutive unvested restricted stock awards 124,583 — Average number of common shares outstanding used to calculate diluted earnings per common share 24,699,794 26,293,560 Earnings per common share: Basic $ 0.06 $ 0.06 Diluted $ 0.05 $ 0.06 Six Months Ended June 30, 2016 June 30, 2015 (In thousands, except share amounts) Net income applicable to common stock $ 3,025 $ 3,005 Average number of common shares outstanding 26,923,517 28,466,813 Less: Average unallocated ESOP shares (2,106,257 ) (2,182,612 ) Average number of common shares outstanding used to calculate basic earnings per common share 24,817,260 26,284,201 Effect of dilutive unvested restricted stock awards 95,469 — Average number of common shares outstanding used to calculate diluted earnings per common share 24,912,729 26,284,201 Earnings per common share: Basic $ 0.12 $ 0.11 Diluted $ 0.12 $ 0.11

Share-Based Compensation (Table

Share-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 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 six 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 June 30, 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 (26,650 ) 14.07 — Balance at June 30, 2016 2,462,350 $ 14.06 9.29 $ 1,713,872 Outstanding and expected to vest at June 30, 2016 2,405,848 $ 14.06 9.29 $ 1,674,886 Exercisable at June 30, 2016 — $ — — $ — Unrecognized compensation cost at June 30, 2016 $ 8,728,000 Weighted average remaining recognition period (years) 4.28
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 June 30, 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 (9,400 ) 14.07 Nonvested stock awards at June 30, 2016 1,005,225 $ 14.06 Unrecognized compensation cost inclusive of directors' fees at June 30,2016 $12,100,000 Weighted average remaining recognition period (years) 4.29

Basis of Presentation and Con33

Basis of Presentation and Consolidation (Details)	6 Months Ended
	Jun. 30, 2016
1-4 Family Residential
Subsidiary or Equity Method Investee [Line Items]
Origination covenants, maximum loan-to-value ratio (greater than) (percent)	80.00%

Securities - Available-for-sale

Securities - Available-for-sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Debt securities:
Amortized Cost	$ 158,510	$ 186,779
Gross Unrealized Gains	4,069	1,155
Gross Unrealized Losses	(545)	(3,820)
Fair Value	162,034	184,114
Marketable equity securities:
Amortized Cost	45,612	50,612
Gross Unrealized Gains	137	461
Gross Unrealized Losses	(2,810)	(3,497)
Fair Value	42,939	47,576
Available-for-sale securities:
Amortized Cost	204,122	237,391
Gross Unrealized Gains	4,206	1,616
Gross Unrealized Losses	(3,355)	(7,317)
Fair Value	204,973	231,690
Privately issued commercial mortgage- backed securities
Debt securities:
Amortized Cost	12,087	13,126
Gross Unrealized Gains	63	0
Gross Unrealized Losses	(57)	(195)
Fair Value	12,093	12,931
Other asset-backed securities
Debt securities:
Amortized Cost	9,008	11,395
Gross Unrealized Gains	9	0
Gross Unrealized Losses	(179)	(142)
Fair Value	8,838	11,253
Total mortgage- and other asset-backed securities
Debt securities:
Amortized Cost	21,095	24,521
Gross Unrealized Gains	72	0
Gross Unrealized Losses	(236)	(337)
Fair Value	20,931	24,184
State and political
Debt securities:
Amortized Cost	8,053	16,016
Gross Unrealized Gains	410	354
Gross Unrealized Losses	0	(55)
Fair Value	8,463	16,315
Global Equity
Marketable equity securities:
Amortized Cost		5,000
Gross Unrealized Gains		388
Gross Unrealized Losses		0
Fair Value		5,388
Domestic community
Marketable equity securities:
Amortized Cost	3,216	3,216
Gross Unrealized Gains	128	70
Gross Unrealized Losses	(7)	(13)
Fair Value	3,337	3,273
Global asset allocation
Marketable equity securities:
Amortized Cost	42,396	42,396
Gross Unrealized Gains	9	3
Gross Unrealized Losses	(2,803)	(3,484)
Fair Value	39,602	38,915
Other Corporate | Corporate debt securities
Debt securities:
Amortized Cost	76,378	87,422
Gross Unrealized Gains	2,297	313
Gross Unrealized Losses	(265)	(2,883)
Fair Value	78,410	84,852
Industrials | Corporate debt securities
Debt securities:
Amortized Cost	50,752	55,470
Gross Unrealized Gains	1,541	306
Gross Unrealized Losses	(139)	(1,244)
Fair Value	52,154	54,532
Utilities | Corporate debt securities
Debt securities:
Amortized Cost	25,626	31,952
Gross Unrealized Gains	756	7
Gross Unrealized Losses	(126)	(1,639)
Fair Value	26,256	30,320
Financial Services | Corporate debt securities
Debt securities:
Amortized Cost	52,984	58,820
Gross Unrealized Gains	1,290	488
Gross Unrealized Losses	(44)	(545)
Fair Value	54,230	58,763
Banks | Corporate debt securities
Debt securities:
Amortized Cost	17,373	18,813
Gross Unrealized Gains	316	138
Gross Unrealized Losses	(3)	(90)
Fair Value	17,686	18,861
Diversified Financials | Corporate debt securities
Debt securities:
Amortized Cost	19,652	23,124
Gross Unrealized Gains	596	349
Gross Unrealized Losses	(10)	(173)
Fair Value	20,238	23,300
Insurance and REITs | Corporate debt securities
Debt securities:
Amortized Cost	15,959	16,883
Gross Unrealized Gains	378	1
Gross Unrealized Losses	(31)	(282)
Fair Value	$ 16,306	$ 16,602

Securities - Held-to-maturity S

Securities - Held-to-maturity Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 196,454	$ 200,141
Gross Unrealized Gains	2,709	104
Gross Unrealized Losses	(198)	(1,019)
Fair Value	198,965	199,226
U.S. Treasury
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	612	636
Gross Unrealized Gains	4	0
Gross Unrealized Losses	0	(2)
Fair Value	616	634
Government-sponsored enterprises
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	17,152	28,256
Gross Unrealized Gains	243	94
Gross Unrealized Losses	0	(126)
Fair Value	17,395	28,224
Government-sponsored mortgage-backed and collateralized mortgage obligations
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	163,414	155,232
Gross Unrealized Gains	2,371	10
Gross Unrealized Losses	(27)	(832)
Fair Value	165,758	154,410
SBA asset-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	15,276	16,017
Gross Unrealized Gains	91	0
Gross Unrealized Losses	(171)	(59)
Fair Value	$ 15,196	$ 15,958

Securities - Schedule of Contra

Securities - Schedule of Contractual Maturities of Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Within 1 year, Available for Sale, Amortized Cost	$ 5,259
After 1 year through 5 years, Available for Sale, Amortized Cost	65,308
After 5 years through 10 years, Available for Sale, Amortized Cost	60,234
After 10 years, Available for Sale, Amortized Cost	6,614
Single Maturity Date, Available for Sale, Amortized Cost	137,415
Mortgage- and asset-backed securities and collateralized mortgage obligations - Amortized Basis	21,095
Amortized Cost	158,510	$ 186,779
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Within 1 year, Available for Sale, Fair Value	5,268
After 1 year through 5 years, Available for Sale, Fair Value	66,848
After 5 years through 10 years, Available for Sale, Fair Value	62,168
After 10 years, Available for Sale, Fair Value	6,819
Single Maturity Date, Available for Sale, Fair Value	141,103
Mortgage- and asset-backed securities and collateralized mortgage obligations - Fair Value	20,931
Available-for-sale securities, total debt securities	162,034	184,114
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis [Abstract]
Within 1 year, Held to Maturity, Amortized Cost	612
After 1 year through 5 years, Held to Maturity, Amortized Cost	11,201
After 5 years through 10 years, Held to Maturity, Amortized Cost	5,951
After 10 years, Held to Maturity, Amortized Cost	0
Single Maturity Date, Held to Maturity, Amortized Cost	17,764
Mortgage- and asset-backed securities and collateralized mortgage obligations - Amortized Basis	178,690
Amortized Cost	196,454	200,141
Held-to-maturity Securities, Debt Maturities, Single Maturity Date, Fair Value [Abstract]
Within 1 year, Held to Maturity, Fair Value	616
After 1 year through 5 years, Held to Maturity, Fair Value	11,243
After 5 years through 10 years, Held to Maturity, Fair Value	6,152
After 10 years, Held to Maturity, Fair Value	0
Single Maturity Date, Held to Maturity, Fair Value	18,011
Mortgage- and asset-backed securities and collateralized mortgage obligations - Fair Value	180,954
Held-to-maturity securities, total debt securities	$ 198,965	$ 199,226

Securities - Available-for-sa37

Securities - Available-for-sale Securities Unrealized Loss (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	$ (2,944)	$ (6,654)
Gross Unrealized Losses - More than twelve months	(411)	(663)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	49,205	169,507
Fair Value - More than twelve months	22,255	10,231
Total debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(141)	(3,170)
Gross Unrealized Losses - More than twelve months	(404)	(650)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	11,915	132,898
Fair Value - More than twelve months	21,796	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	(6)	(84)
Gross Unrealized Losses - More than twelve months	(51)	(111)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	2,594	5,166
Fair Value - More than twelve months	7,688	7,765
Other asset-backed securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(22)	(142)
Gross Unrealized Losses - More than twelve months	(157)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	2,110	11,253
Fair Value - More than twelve months	3,748	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	(28)	(226)
Gross Unrealized Losses - More than twelve months	(208)	(111)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	4,704	16,419
Fair Value - More than twelve months	11,436	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		0
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	(2,803)	(3,484)
Gross Unrealized Losses - More than twelve months	(7)	(13)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	37,290	36,609
Fair Value - More than twelve months	459	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	(7)	(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	459	453
Global asset allocation
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(2,803)	(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	37,290	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	(100)	(2,344)
Gross Unrealized Losses - More than twelve months	(165)	(539)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	5,279	69,201
Fair Value - More than twelve months	9,045	2,013
Industrials | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(7)	(957)
Gross Unrealized Losses - More than twelve months	(132)	(287)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	2,001	43,848
Fair Value - More than twelve months	5,466	395
Utilities | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(93)	(1,387)
Gross Unrealized Losses - More than twelve months	(33)	(252)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	3,278	25,353
Fair Value - More than twelve months	3,579	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	(13)	(545)
Gross Unrealized Losses - More than twelve months	(31)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	1,932	43,954
Fair Value - More than twelve months	1,315	0
Banks | Corporate debt securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	(3)	(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	1,366	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	(10)	(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	566	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	0	(282)
Gross Unrealized Losses - More than twelve months	(31)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Fair Value - Less than twelve months	0	14,487
Fair Value - More than twelve months	$ 1,315	$ 0

Securities - Held-to-maturity38

Securities - Held-to-maturity Securities Unrealized Loss (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss [Abstract]
Gross Unrealized Losses - Less than twelve months	$ (198)	$ (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	13,245	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	(27)	(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	5,500	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	(171)	(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	7,745	15,958
Fair Value - More than twelve months	$ 0	$ 0

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2016	Sep. 30, 2015	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 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	$ 44,700		$ 18,700	$ 60,194	$ 86,721
Available-for-sale securities, gross realized gains	1,200		268	1,300	1,600
Available-for-sale securities, gross realized losses	$ 552		$ 1	$ 974	$ 35
Depreciation, percentage of amortized cost basis	2.00%			2.00%
Gross Unrealized Losses - More than twelve months	$ 411			$ 411		$ 663
Mutual Funds
Schedule of Available-for-sale Securities [Line Items]
Depreciation, percentage of amortized cost basis	6.90%			6.90%
Gross Unrealized Losses - More than twelve months	$ 2,800			$ 2,800
Securities Held to Maturity | Accumulated Net Investment Gain (Loss)
Schedule of Available-for-sale Securities [Line Items]
Gross unrealized gains	$ 422			$ 422		$ 571

Loans and The Allowance for L40

Loans and The Allowance for Loan Losses - Summary of Loan balances (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 1,683,554	$ 1,539,176
Allowance for loan losses	(18,079)	(17,102)
Discount and fair value adjustments on purchased loans	(1,922)	(1,959)
Deferred loan costs and fees, net	3,506	3,160
Loans, net	1,667,059	1,523,275
Consumer and Commercial Portfolio Segment | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	107,455	79,773
Consumer, Excluding Consumer Other Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	1,472,092	1,318,313
Consumer, Excluding Consumer Other Portfolio Segment | 1-4 Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	673,444	599,938
Consumer, Excluding Consumer Other Portfolio Segment | Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	81,307	77,399
Consumer, Excluding Consumer Other Portfolio Segment | Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	609,886	561,203
Commercial Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	178,390	182,677
Consumer Other Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 33,072	$ 38,186

Loans and The Allowance for L41

Loans and The Allowance for Loan Losses - Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	$ 16,985	$ 13,238	$ 17,102	$ 12,973
Provision (credit) for loan losses	1,113	544	1,086	823
Loans charged-off	(19)	(5)	(142)	(19)
Recoveries	0	0	33	0
Loans and Leases Receivable, Ending Allowance	18,079	13,777	18,079	13,777
Unallocated
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	425	666	428	658
Provision (credit) for loan losses	28	22	25	30
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Loans and Leases Receivable, Ending Allowance	453	688	453	688
Consumer, Excluding Consumer Other Portfolio Segment | 1-4 Family Residential
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	3,665	3,215	3,916	3,222
Provision (credit) for loan losses	275	192	24	185
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Loans and Leases Receivable, Ending Allowance	3,940	3,407	3,940	3,407
Consumer, Excluding Consumer Other Portfolio Segment | Home Equity
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	617	380	636	340
Provision (credit) for loan losses	(78)	39	(97)	79
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Loans and Leases Receivable, Ending Allowance	539	419	539	419
Consumer, Excluding Consumer Other Portfolio Segment | Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	7,338	3,722	7,147	3,551
Provision (credit) for loan losses	284	846	475	1,017
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Loans and Leases Receivable, Ending Allowance	7,622	4,568	7,622	4,568
Consumer and Commercial Portfolio Segment | Construction
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	1,622	1,176	1,364	1,056
Provision (credit) for loan losses	125	(152)	383	(32)
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Loans and Leases Receivable, Ending Allowance	1,747	1,024	1,747	1,024
Commercial Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	2,619	3,332	2,839	3,410
Provision (credit) for loan losses	671	(341)	523	(419)
Loans charged-off	(8)	0	(113)	0
Recoveries	0	0	33	0
Loans and Leases Receivable, Ending Allowance	3,282	2,991	3,282	2,991
Consumer Other Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Loans and Leases Receivable, Beginning Allowance	699	747	772	736
Provision (credit) for loan losses	(192)	(62)	(247)	(37)
Loans charged-off	(11)	(5)	(29)	(19)
Recoveries	0	0	0	0
Loans and Leases Receivable, Ending Allowance	$ 496	$ 680	$ 496	$ 680

Loans and The Allowance for L42

Loans and The Allowance for Loan Losses - Additional Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	$ 558		$ 404
Allowance related to non-impaired loans	17,521		16,698
Total allowance for loan losses	18,079	$ 16,985	17,102	$ 13,777	$ 13,238	$ 12,973
Impaired loans	15,399		11,170
Non-impaired loans	1,668,155		1,528,006
Total loans	1,683,554		1,539,176
Unallocated
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0		0
Allowance related to non-impaired loans	453		428
Total allowance for loan losses	453	425	428	688	666	658
Impaired loans	0		0
Non-impaired loans	0		0
Total loans	0		0
Consumer, Excluding Consumer Other Portfolio Segment | 1-4 Family Residential
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0		0
Allowance related to non-impaired loans	3,940		3,916
Total allowance for loan losses	3,940	3,665	3,916	3,407	3,215	3,222
Impaired loans	6,489		6,114
Non-impaired loans	666,955		593,824
Total loans	673,444		599,938
Consumer, Excluding Consumer Other Portfolio Segment | Home Equity
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0		0
Allowance related to non-impaired loans	539		636
Total allowance for loan losses	539	617	636	419	380	340
Impaired loans	450		270
Non-impaired loans	80,857		77,129
Total loans	81,307		77,399
Consumer, Excluding Consumer Other Portfolio Segment | Commercial Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	36		384
Allowance related to non-impaired loans	7,586		6,763
Total allowance for loan losses	7,622	7,338	7,147	4,568	3,722	3,551
Impaired loans	5,322		4,631
Non-impaired loans	604,564		556,572
Total loans	609,886		561,203
Consumer and Commercial Portfolio Segment | Construction
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0		0
Allowance related to non-impaired loans	1,747		1,364
Total allowance for loan losses	1,747	1,622	1,364	1,024	1,176	1,056
Impaired loans	0		0
Non-impaired loans	107,455		79,773
Total loans	107,455		79,773
Commercial Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	522		10
Allowance related to non-impaired loans	2,760		2,829
Total allowance for loan losses	3,282	2,619	2,839	2,991	3,332	3,410
Impaired loans	3,037		10
Non-impaired loans	175,353		182,667
Total loans	178,390		182,677
Consumer Other Portfolio Segment
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance related to impaired loans	0		10
Allowance related to non-impaired loans	496		762
Total allowance for loan losses	496	$ 699	772	$ 680	$ 747	$ 736
Impaired loans	101		145
Non-impaired loans	32,971		38,041
Total loans	$ 33,072		$ 38,186

Loans and The Allowance for L43

Loans and The Allowance for Loan Losses - Summary of Past Due and Non-accrual loans, by class (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 8,654	$ 5,978
Loans on Non-accrual	14,983	10,744
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,434	3,344
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,183	1,348
Past Due 90 Days or More
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,037	1,286
Consumer, Excluding Consumer Other Portfolio Segment | 1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,513	3,277
Loans on Non-accrual	6,073	5,688
Consumer, Excluding Consumer Other Portfolio Segment | Home Equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	956	1,226
Loans on Non-accrual	450	270
Consumer, Excluding Consumer Other Portfolio Segment | Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,074	1,249
Loans on Non-accrual	5,322	4,631
Consumer, Excluding Consumer Other Portfolio Segment | 30-59 Days Past Due | 1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	913	2,287
Consumer, Excluding Consumer Other Portfolio Segment | 30-59 Days Past Due | Home Equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	449	1,031
Consumer, Excluding Consumer Other Portfolio Segment | 30-59 Days Past Due | Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Consumer, Excluding Consumer Other Portfolio Segment | 60-89 Days Past Due | 1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,608	0
Consumer, Excluding Consumer Other Portfolio Segment | 60-89 Days Past Due | Home Equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	250	19
Consumer, Excluding Consumer Other Portfolio Segment | 60-89 Days Past Due | Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,074	1,249
Consumer, Excluding Consumer Other Portfolio Segment | Past Due 90 Days or More | 1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	992	990
Consumer, Excluding Consumer Other Portfolio Segment | Past Due 90 Days or More | Home Equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	257	176
Consumer, Excluding Consumer Other Portfolio Segment | Past Due 90 Days or More | Commercial Real Estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Commercial Portfolio Segment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,037	23
Loans on Non-accrual	3,037	10
Commercial Portfolio Segment | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	23
Commercial Portfolio Segment | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	249	0
Commercial Portfolio Segment | Past Due 90 Days or More
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,788	0
Consumer Other Portfolio Segment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	74	203
Loans on Non-accrual	101	145
Consumer Other Portfolio Segment | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	72	3
Consumer Other Portfolio Segment | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2	80
Consumer Other Portfolio Segment | Past Due 90 Days or More
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 0	$ 120

Loans and The Allowance for L44

Loans and The Allowance for Loan Losses - Summary of Impaired Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Recorded Investment
Recorded Investment, without valuation allowance	$ 11,307	$ 6,419
Recorded Investment, with a valuation allowance	4,092	4,751
Recorded Investment, total	15,399	11,170
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	12,271	7,288
Unpaid Principal Balance, with a valuation allowance	4,092	4,752
Unpaid Principal Balance, total	16,363	12,040
Related Allowance	558	404
Commercial Real Estate
Recorded Investment
Recorded Investment, with a valuation allowance	1,074	4,631
Unpaid Principal Balance
Unpaid Principal Balance, with a valuation allowance	1,074	4,631
Related Allowance	36	384
Commercial Portfolio Segment
Unpaid Principal Balance
Related Allowance		10
Consumer
Unpaid Principal Balance
Related Allowance		10
Consumer, Excluding Consumer Other Portfolio Segment | 1-4 Family Residential
Recorded Investment
Recorded Investment, without valuation allowance	6,489	6,114
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	7,199	6,824
Consumer, Excluding Consumer Other Portfolio Segment | Home Equity
Recorded Investment
Recorded Investment, without valuation allowance	450	270
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	616	425
Consumer, Excluding Consumer Other Portfolio Segment | Commercial Real Estate
Recorded Investment
Recorded Investment, without valuation allowance	4,248
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	4,328
Commercial Portfolio Segment
Recorded Investment
Recorded Investment, without valuation allowance	19
Recorded Investment, with a valuation allowance	3,018	10
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	19
Unpaid Principal Balance, with a valuation allowance	3,018	11
Related Allowance	522
Consumer Other Portfolio Segment
Recorded Investment
Recorded Investment, without valuation allowance	101	35
Recorded Investment, with a valuation allowance		110
Unpaid Principal Balance
Unpaid Principal Balance, without a valuation allowance	$ 109	39
Unpaid Principal Balance, with a valuation allowance		$ 110

Loans and The Allowance for L45

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		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 13,382	$ 5,270	$ 13,876	$ 5,188
Interest Income Recognized	117	86	283	159
Consumer, Excluding Consumer Other Portfolio Segment | 1-4 Family Residential
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	6,508	4,588	6,377	4,532
Interest Income Recognized	72	76	145	143
Consumer, Excluding Consumer Other Portfolio Segment | Home Equity
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	381	647	344	624
Interest Income Recognized	4	8	8	14
Consumer, Excluding Consumer Other Portfolio Segment | Commercial Real Estate
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	4,819		4,756
Interest Income Recognized	38		94
Consumer Other Portfolio Segment
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	155	35	151	32
Interest Income Recognized	3	$ 2	5	$ 2
Commercial Portfolio Segment
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	1,519		2,248
Interest Income Recognized	$ 0		$ 31

Loans and The Allowance for L46

Loans and The Allowance for Loan Losses - Summary of Loan by Risk Rating (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 1,683,554	$ 1,539,176
Loans rated 1 - 6
Financing Receivable, Recorded Investment [Line Items]
Total loans	877,008	812,346
Loans rated 7
Financing Receivable, Recorded Investment [Line Items]
Total loans	16,031	13,421
Loans rated 8
Financing Receivable, Recorded Investment [Line Items]
Total loans	11,610	6,963
Loans rated 9
Financing Receivable, Recorded Investment [Line Items]
Total loans	696	712
Loans rated 10
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Loans not rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	778,209	705,734
Consumer, Excluding Consumer Other Portfolio Segment
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,472,092	1,318,313
Consumer, Excluding Consumer Other Portfolio Segment | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	673,444	599,938
Consumer, Excluding Consumer Other Portfolio Segment | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	81,307	77,399
Consumer, Excluding Consumer Other Portfolio Segment | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	609,886	561,203
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 1 - 6 | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,926	1,950
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 1 - 6 | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	300	465
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 1 - 6 | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	595,200	548,360
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 7 | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,921	4,461
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 7 | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	508	321
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 7 | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	8,296	7,765
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 8 | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,018	1,592
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 8 | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	136	144
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 8 | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,390	5,078
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 9 | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	696	701
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 9 | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 9 | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 10 | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 10 | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer, Excluding Consumer Other Portfolio Segment | Loans rated 10 | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer, Excluding Consumer Other Portfolio Segment | Loans not rated | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	664,883	591,234
Consumer, Excluding Consumer Other Portfolio Segment | Loans not rated | Home Equity
Financing Receivable, Recorded Investment [Line Items]
Total loans	80,363	76,469
Consumer, Excluding Consumer Other Portfolio Segment | Loans not rated | Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer and Commercial Portfolio Segment | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	107,455	79,773
Consumer and Commercial Portfolio Segment | Loans rated 1 - 6 | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	107,455	79,773
Consumer and Commercial Portfolio Segment | Loans rated 7 | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer and Commercial Portfolio Segment | Loans rated 8 | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer and Commercial Portfolio Segment | Loans rated 9 | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans		0
Consumer and Commercial Portfolio Segment | Loans rated 10 | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer and Commercial Portfolio Segment | Loans not rated | Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial Portfolio Segment
Financing Receivable, Recorded Investment [Line Items]
Total loans	178,390	182,677
Commercial Portfolio Segment | Loans rated 1 - 6
Financing Receivable, Recorded Investment [Line Items]
Total loans	172,122	181,792
Commercial Portfolio Segment | Loans rated 7
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,230	874
Commercial Portfolio Segment | Loans rated 8
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,038	0
Commercial Portfolio Segment | Loans rated 9
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	11
Commercial Portfolio Segment | Loans rated 10
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Commercial Portfolio Segment | Loans not rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer Other Portfolio Segment
Financing Receivable, Recorded Investment [Line Items]
Total loans	33,072	38,186
Consumer Other Portfolio Segment | Loans rated 1 - 6
Financing Receivable, Recorded Investment [Line Items]
Total loans	5	6
Consumer Other Portfolio Segment | Loans rated 7
Financing Receivable, Recorded Investment [Line Items]
Total loans	76	0
Consumer Other Portfolio Segment | Loans rated 8
Financing Receivable, Recorded Investment [Line Items]
Total loans	28	149
Consumer Other Portfolio Segment | Loans rated 9
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer Other Portfolio Segment | Loans rated 10
Financing Receivable, Recorded Investment [Line Items]
Total loans	0	0
Consumer Other Portfolio Segment | Loans not rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 32,963	$ 38,031

Interest Rate Swap Agreements47

Interest Rate Swap Agreements (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Derivative Gains, notional amount	$ 355,409	$ 290,846
Derivative Gains, fair value	20,509	7,962
Derivative Losses, notional amount	367,250	295,244
Derivative Losses, fair value	21,784	8,489
Commercial loan level interest rate swap agreements
Derivatives, Fair Value [Line Items]
Derivative Gains, notional amount	339,307	282,546
Derivative Gains, fair value	20,468	7,956
Derivative Losses, notional amount	339,307	282,546
Derivative Losses, fair value	21,630	8,411
Other contracts
Derivatives, Fair Value [Line Items]
Derivative Gains, notional amount	16,102	8,300
Derivative Gains, fair value	41	6
Derivative Losses, notional amount	27,943	12,698
Derivative Losses, fair value	$ 154	$ 78

Deposits - Summary of Deposit B

Deposits - Summary of Deposit Balances (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Banking and Thrift [Abstract]
NOW and demand	$ 298,178	$ 288,143
Regular savings	274,866	287,344
Money market	506,251	368,050
Brokered money market	45,231	41,807
Total non-certificate accounts	1,124,526	985,344
Term certificates of $250,000 or more	79,996	65,364
Term certificates less than $250,000	259,419	246,614
Brokered term certificates	136,965	136,527
Total certificate accounts	476,380	448,505
Total deposits	$ 1,600,906	$ 1,433,849

Deposits - Schedule of Contract

Deposits - Schedule of Contractual Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Time Deposits, Fiscal Year Maturity [Abstract]
Amount - Within 1 year	$ 246,972
Amount - 1-2 years	91,942
Amount - 2-3 years	49,136
Amount - 3-4 years	66,744
Amount - 4 years and beyond	21,586
Total certificate accounts	$ 476,380	$ 448,505
Weighted Average Rate of Time Deposits [Abstract]
Weighted Average Rate - Within 1 year	0.65%
Weighted Average Rate - 1-2 years	1.18%
Weighted Average Rate - 2-3 years	1.38%
Weighted Average Rate - 3-4 years	2.00%
Weighted Average Rate - 4 years and beyond	1.84%
Weighted Average Rate	1.07%

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Assets
Debt securities	$ 162,034	$ 184,114
Marketable equity securities	42,939	47,576
Recurring
Assets
Debt securities	162,034	184,114
Marketable equity securities	42,939	47,576
Derivative assets	20,509	7,962
Total assets	225,482	239,652
Liabilities
Derivative liabilities	21,784	8,489
Recurring | Level 1
Assets
Debt securities	0	0
Marketable equity securities	42,939	47,576
Derivative assets	0	0
Total assets	42,939	47,576
Liabilities
Derivative liabilities	0	0
Recurring | Level 2
Assets
Debt securities	162,034	184,114
Marketable equity securities	0	0
Derivative assets	20,509	7,962
Total assets	182,543	192,076
Liabilities
Derivative liabilities	21,784	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 - Ass51

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - Nonrecurring - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 528	$ 0	$ 307	$ 0
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0		0		$ 0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0		0		0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 3,534		$ 3,534		$ 4,752

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Fair Value, Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Financial assets:
Securities available for sale	$ 204,973	$ 231,690
Securities held to maturity	196,454	200,141
Estimate of Fair Value Measurement
Financial assets:
Cash and cash equivalents	43,195	33,298
Securities available for sale	204,973	231,690
Securities held to maturity	198,965	199,226
Federal Home Loan Bank stock	12,833	13,567
Loans and loans held for sale	1,683,548	1,538,809
Accrued interest receivable	5,640	5,344
Financial liabilities:
Deposits	1,604,586	1,434,179
Borrowings	215,660	260,244
Carrying Amount
Financial assets:
Cash and cash equivalents	43,195	33,298
Securities available for sale	204,973	231,690
Securities held to maturity	196,454	200,141
Federal Home Loan Bank stock	12,833	13,567
Loans and loans held for sale	1,673,156	1,536,152
Accrued interest receivable	5,640	5,344
Financial liabilities:
Deposits	1,600,906	1,433,849
Borrowings	215,000	260,000
Level 1
Financial assets:
Cash and cash equivalents	43,195	33,298
Securities available for sale	42,939	47,576
Securities held to maturity	616	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	162,034	184,114
Securities held to maturity	198,349	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	215,660	260,244
Level 3
Financial assets:
Cash and cash equivalents	0	0
Securities available for sale	0	0
Securities held to maturity		0
Federal Home Loan Bank stock	12,833	13,567
Loans and loans held for sale	1,683,548	1,538,809
Accrued interest receivable	5,640	5,344
Financial liabilities:
Deposits	1,604,586	1,434,179
Borrowings	0	0
Interest Rate Swap | Estimate of Fair Value Measurement
Financial liabilities:
Derivative assets	20,509	7,962
Derivative liabilities	21,784	8,489
Interest Rate Swap | Carrying Amount
Financial liabilities:
Derivative assets	20,509	7,962
Derivative liabilities	21,784	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	20,509	7,962
Derivative liabilities	21,784	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	Jun. 30, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income	$ (932)	$ (5,188)
Accumulated Defined Benefit Plans Adjustment, Net Unamortized Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized actuarial gain (loss)	(2,722)	(2,858)
Tax effect	1,004	1,052
Accumulated other comprehensive income	(1,718)	(1,806)
Securities Available for Sale | Accumulated Net Investment Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized actuarial gain (loss)	851	(5,701)
Tax effect	(343)	1,945
Accumulated other comprehensive income	508	(3,756)
Securities Held to Maturity | Accumulated Net Investment Gain (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized actuarial gain (loss)	422	571
Tax effect	(144)	(197)
Accumulated other comprehensive income	$ 278	$ 374

Comprehensive Income - Changes

Comprehensive Income - Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 398,829	$ 411,606
Other comprehensive income (loss)	$ 1,847	$ (3,162)	4,256	(1,378)
Ending balance	391,952	413,741	391,952	413,741
Defined Benefit Pension Plan
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,762)	(815)	(1,806)	(815)
Other comprehensive income (loss) before reclassification adjustments	0	0	0	0
Net realized gains	0	0	0	0
Amortization of actuarial losses	68	56	136	56
Tax effects	(24)	(22)	(48)	(22)
Other comprehensive income (loss)	44	34	88	34
Ending balance	(1,718)	(781)	(1,718)	(781)
Accumulated other comprehensive income (loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(2,779)	4,361	(5,188)	2,577
Other comprehensive income (loss) before reclassification adjustments	3,512	(4,793)	6,927	(631)
Net realized gains	(664)	(267)	(375)	(1,585)
Amortization of actuarial losses	68	56	136	56
Amortization of amounts previously recorded upon transfer from available for sale	(79)		(149)
Tax effects	(990)	1,842	(2,283)	782
Other comprehensive income (loss)	1,847	(3,162)	4,256	(1,378)
Ending balance	(932)	1,199	(932)	1,199
Securities Available for Sale | Accumulated Net Investment Gain (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,346)	5,176	(3,756)	3,392
Other comprehensive income (loss) before reclassification adjustments	3,512	(4,793)	6,927	(631)
Net realized gains	(664)	(267)	(375)	(1,585)
Amortization of amounts previously recorded upon transfer from available for sale	0		0
Tax effects	(994)	1,864	(2,288)	804
Other comprehensive income (loss)	1,854	(3,196)	4,264	(1,412)
Ending balance	508	1,980	508	1,980
Securities Held to Maturity | Accumulated Net Investment Gain (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	329	0	374	0
Other comprehensive income (loss) before reclassification adjustments	0	0	0	0
Net realized gains	0	0	0	0
Amortization of amounts previously recorded upon transfer from available for sale	(79)		(149)
Tax effects	28	0	53	0
Other comprehensive income (loss)	(51)	0	(96)	0
Ending balance	$ 278	$ 0	$ 278	$ 0

Stockholders' Equity (Details)

Stockholders' Equity (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jan. 01, 2015	Dec. 31, 2014
Capital [Abstract]
Actual - Total Capital to Risk Weighted Assets	$ 396,157	$ 407,444
Actual - Total Capital to Risk Weighted Assets Ratio (percentage)	22.30%	24.80%
Minimum Capital Requirement - Total Capital	$ 142,379	$ 131,231
Minimum Capital Requirement - Total Capital to Risk Weighted Assets Ratio (percentage)	8.00%	8.00%
Minimum to Be Well Capitalized - Total Capital	$ 177,974	$ 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	$ 378,078	$ 390,342
Actual - Tier 1 Capital to Risk Weighted Assets Ratio (percentage)	21.20%	23.80%
Minimum Capital Requirement - Tier 1 Capital to Risk Weighted Assets	$ 106,784	$ 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	$ 142,379	$ 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	$ 378,078	$ 390,342
Actual - Common Equity to Risk Weighted Assets Ratio (percentage)	21.20%	23.80%
Minimum Capital Requirement - Common Equity to Risk Weighted Assets	$ 80,088	$ 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	$ 115,683	$ 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	$ 378,078	$ 390,342
Actual - Tier 1 Capital to Average Assets Ratio (percentage)	17.30%	19.60%
Minimum Capital Requirement - Tier 1 Capital to Average Assets	$ 87,294	$ 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	$ 109,117	$ 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	$ 303,796	$ 296,309
Actual - Total Capital to Risk Weighted Assets Ratio (percentage)	17.10%	18.10%
Minimum Capital Requirement - Total Capital	$ 142,131	$ 130,832
Minimum Capital Requirement - Total Capital to Risk Weighted Assets Ratio (percentage)	8.00%	8.00%
Minimum to Be Well Capitalized - Total Capital	$ 177,664	$ 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	$ 285,717	$ 279,207
Actual - Tier 1 Capital to Risk Weighted Assets Ratio (percentage)	16.10%	17.10%
Minimum Capital Requirement - Tier 1 Capital to Risk Weighted Assets	$ 106,598	$ 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	$ 142,131	$ 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	$ 285,717	$ 279,207
Actual - Common Equity to Risk Weighted Assets Ratio (percentage)	16.10%	17.10%
Minimum Capital Requirement - Common Equity to Risk Weighted Assets	$ 79,949	$ 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	$ 115,481	$ 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	$ 285,717	$ 279,207
Actual - Tier 1 Capital to Average Assets Ratio (percentage)	13.10%	14.00%
Minimum Capital Requirement - Tier 1 Capital to Average Assets	$ 87,238	$ 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	$ 109,047	$ 99,608
Minimum to Be Well Capitalized - Tier 1 Capital to Average Assets Ratio (percentage)	5.00%	5.00%

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Details)	6 Months Ended
	Jun. 30, 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%
Capital conservation buffer, phase in period (years)	3 years

- Employee Stock Ownership Plan

- Employee Stock Ownership Plan (Details) - shares	Jun. 30, 2016	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Allocated	150,229	75,912
Committed to be allocated	37,852	75,912
Unallocated	2,087,667	2,124,846
Total	2,275,748	2,276,670

Employee Stock Ownership Plan -

Employee Stock Ownership Plan - Additional information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
ESOP, Number of shares committed to be released annually	75,912		75,912
Fair Value of unallocated shares	$ 30,800		$ 30,800		$ 32,500
ESOP expense	$ 276	$ 259	$ 541	$ 508

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Share [Abstract]
Net income applicable to common stock	$ 1,358	$ 1,699	$ 3,025	$ 3,005
Average number of common shares outstanding	26,672,005	28,466,813	26,923,517	28,466,813
Less: Average unallocated ESOP shares	(2,096,794)	(2,173,253)	(2,106,257)	(2,182,612)
Average number of common shares outstanding used to calculate basic earnings per common share	24,575,211	26,293,560	24,817,260	26,284,201
Effect of dilutive unvested restricted stock awards	124,583	0	95,469	0
Average number of common shares outstanding used to calculate diluted earnings per common share	24,699,794	26,293,560	24,912,729	26,284,201
Basic (dollars per share)	$ 0.06	$ 0.06	$ 0.12	$ 0.11
Diluted (dollars per share)	$ 0.05	$ 0.06	$ 0.12	$ 0.11
Antidilutive securities excluded from computation of earnings per share (shares)	2,462,350		2,462,350

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	2,846,681		2,846,681
Expected life (years)			6 years 6 months
Vesting period (years)			5 years
Share-based compensation expense	$ 485,000	$ 0	$ 996,000	$ 0
Tax benefit related to share-based compensation expense	$ 125,000		$ 250,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	1,138,673		1,138,673
Share-based compensation expense	$ 701,000	$ 0	$ 1,385,000	$ 0
Tax benefit related to share-based compensation expense	$ 247,000		$ 489,000
Granted (shares)			31,450
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (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	6 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (shares)	2,462,350	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 ($)	6 Months Ended	12 Months Ended
	Jun. 30, 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)	(26,650)
Ending balance (shares)	2,462,350	2,434,000
Outstanding and expected to vest at end of period (shares)	2,405,848
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]
Outstanding, weighted average remaining contractual term (years)	9 years 3 months 15 days
Granted, weighted average remaining contractual term (years)
Outstanding and expected to vest, weighted average remaining contractual term (years)	9 years 3 months 15 days
Outstanding, aggregate intrinsic value	$ 1,713,872	$ 0
Granted, aggregate intrinsic value	0
Outstanding and expected to vest, aggregate intrinsic value	1,674,886
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	$ 8,728,000
Weighted average remaining recognition period (years)	4 years 3 months 11 days

Share-Based Compensation - Rest

Share-Based Compensation - Restricted Stock Activity (Details) - Restricted Stock $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 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	(9,400)
Ending balance (shares) | shares	1,005,225
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 | $	$ 12,100
Weighted average remaining recognition period (years)	4 years 3 months 15 days