Lake Sunapee Bank (LSBG) 10-K 16 Mar 15 2014 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Mar. 07, 2015	Jun. 30, 2014
Document Information [Line Items]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Trading Symbol	NHTB
Entity Registrant Name	NEW HAMPSHIRE THRIFT BANCSHARES INC
Entity Central Index Key	846931
Current Fiscal Year End Date	-19
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		8,263,068
Entity Public Float			$115.20

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
ASSETS
Cash and due from banks	$24,957	$12,005
Interest-bearing deposit with the Federal Reserve Bank	26,163	21,573
Cash and cash equivalents	51,120	33,578
Interest-bearing time deposits with other banks	747	1,743
Securities available-for-sale	115,698	125,238
Federal Home Loan Bank stock	10,762	9,760
Loans held-for-sale	2,000	680
Loans receivable, net of the allowance for loan losses of $9.3 million as of December 31, 2014 and $9.8 million as of December 31, 2013	1,206,845	1,134,110
Accrued interest receivable	2,576	2,628
Premises and equipment, net	24,391	23,842
Investment in real estate	3,533	3,681
Other real estate owned	251	1,343
Goodwill	44,576	44,632
Intangible Assets	9,332	11,020
Bank owned life insurance	20,187	19,544
Other assets	11,768	12,071
Total assets	1,503,786	1,423,870
Deposits:
Noninterest-bearing	117,889	101,446
Interest-bearing	1,034,825	986,646
Total deposits	1,152,714	1,088,092
Federal Home Loan Bank advances	140,992	121,734
Securities sold under agreements to repurchase	16,756	27,885
Subordinated debentures	37,620	20,620
Accrued expenses and other liabilities	15,868	16,282
Total liabilities	1,363,950	1,274,613
STOCKHOLDERS' EQUITY
Preferred stock, $.01 par value, per share: 2,500,000 shares authorized: Series B, non-cumulative perpetual, 8,000 shares issued and outstanding at December 31, 2014 and 23,000 issued and outstanding at December 31, 2013, liquidation value $1,000 per share
Common stock, $.01 par value: 10,000,000 shares authorized, 8,692,360 shares issued and 8,258,031 shares outstanding as of December 31, 2014 and 8,651,076 shares issued and 8,216,747 shares outstanding as of December 31, 2013	87	87
Paid-in capital	86,561	100,961
Retained earnings	63,876	58,347
Unearned restricted stock awards	-598	-490
Accumulated other comprehensive loss	-3,339	-2,897
Treasury stock, at cost, 434,329 shares as of December 31, 2014 and December 31, 2013	-6,751	-6,751
Total stockholders' equity	139,836	149,257
Total liabilities and stockholders' equity	$1,503,786	$1,423,870

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Loans receivable, allowance	$9,269	$9,757
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	8,692,360	8,651,076
Common stock, shares outstanding	8,258,031	8,216,747
Treasury stock, shares	434,329	434,329
Non-Cumulative Perpetual Series B, Preferred Shares
Preferred stock, par value	$0.01	$0.01
Preferred stock, shares authorized	250,000	2,500,000
Preferred stock, shares issued	23,000	23,000
Preferred stock, shares outstanding	23,000	23,000
Preferred stock, liquidation value	$1,000	$1,000

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
INTEREST AND DIVIDEND INCOME
Interest and fees on loans	$46,647	$38,034	$32,542
Taxable	1,362	1,333	3,223
Dividends	165	52	62
Other	554	857	594
Total interest and dividend income	48,728	40,276	36,421
INTEREST EXPENSE
Interest on deposits	4,464	4,055	4,381
Interest on advances and other borrowed money	1,417	1,585	1,944
Interest on debentures	855	806	1,027
Interest on securities sold under agreements to repurchase	63	51	47
Total interest expense	6,799	6,497	7,399
Net interest and dividend income	41,929	33,779	29,022
PROVISION FOR LOAN LOSSES	905	962	2,705
Net interest and dividend income after provision for loan losses	41,024	32,817	26,317
NONINTEREST INCOME
Customer service fees	6,057	5,239	5,067
Net gain on sales and calls of securities	950	964	3,819
Net gain on sales of loans	870	2,264	2,775
Net gain (loss) on sales of other real estate owned, other assets and fixed assets	181	5	-150
Mark-to-market adjustment, Charter Holding Corp.		1,369
Rental income	717	746	736
Realized gain in Charter Holding Corp.		294	444
Bank owned life insurance income	635	626	545
Trust and management fees	8,340	2,741
Insurance commissions	1,476	1,467	1,315
Total noninterest income	19,226	15,715	14,551
NONINTEREST EXPENSES
Salaries and employee benefits	25,037	19,206	15,022
Occupancy and equipment expenses	5,616	4,500	3,648
Depositors' insurance	994	776	802
Professional services	1,254	1,265	1,208
Data processing and outside services fees	2,455	1,393	1,117
ATM processing fees	843	630	498
Telephone expense	1,087	706	664
Supplies	568	454	373
Advertising and promotion	912	662	481
Merger related expense		1,620	1,167
Amortization of intangible assets	1,688	1,000	425
Other expenses	6,192	4,779	4,020
Total noninterest expenses	46,646	36,991	29,425
Income before income taxes	13,604	11,541	11,443
Provision for income taxes	3,564	3,127	3,684
NET INCOME	10,040	8,414	7,759
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$9,810	$8,098	$7,093
Earnings per common share	$1.19	$1.11	$1.20
Earnings per common share, assuming dilution	$1.19	$1.11	$1.20
Dividends declared per common share	$0.52	$0.52	$0.52

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net income	$10,040	$8,414	$7,759
Net change in unrealized gain/loss on available-for-sale securities, net of tax effect	857	-2,382	-530
Net change in unrecognized pension plan costs, net of tax effect	-1,299	860	-217
Net change in derivatives, net of tax effect		101	182
Net change in unrealized gain/loss on equity investment, net of tax effect		-32	8
Comprehensive income	$9,598	$6,961	$7,202

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Stockholders Equity (USD $)	Total	COMMON STOCK	COMMON STOCK	WARRANTS	PAID-IN CAPITAL	PAID-IN CAPITAL	PAID-IN CAPITAL	PAID-IN CAPITAL	RETAINED EARNINGS	UNEARNED RESTRICTED STOCK AWARDS	ACCUMULATED OTHER COMPREHENSIVE LOSS	TREASURY STOCK
In Thousands, except Share data			Central Financial Corporation			Central Financial Corporation	McCrillis and Eldredge Insurance, Inc	Nashua Bank
Balance, beginning of year at Dec. 31, 2011		$63		$85	$66,658				$49,892		($887)	($7,151)
Increase on issuance of common stock from the exercise of stock options					365
Shares awarded (16,500 in 2014, 14,500 in 2013, and 35,000 in 2012)										-440
Net income	7,759								7,759
Issuance of restricted stock awards												544
Net change in accumulated other comprehensive loss, net of tax effect	-557										-557
Tax benefit for stock options and awards					25
Shares forfeited (no shares in 2014 and 2013, 5,000 in 2012)										63
Cash dividends declared, preferred stock									-666
Shares forfeited, shares										5,000
Cash dividends paid, common stock									-3,052
Shares repurchased												-63
Shares surrendered to treasury stock												0
Restricted stock awards, issued from treasury stock, net					-104
Consideration for acquisition							53	14,632
Repurchase of warrants				-85	-652
Assumption of preferred stock		12			3,000
Balance, end of year at Dec. 31, 2012		75			83,977				53,933	-377	-1,444	-6,670
Increase on issuance of common stock from the exercise of stock options					513
Shares awarded (16,500 in 2014, 14,500 in 2013, and 35,000 in 2012)										-189
Net income	8,414								8,414
Issuance of restricted stock awards												189
Net change in accumulated other comprehensive loss, net of tax effect	-1,453										-1,453
Tax benefit for stock options and awards					30
Cash dividends declared, preferred stock									-316
Surrender of outstanding shares												-270
Issuance of common stock from dividend reinvestment plan					202
Shares forfeited, shares										0
Cash dividends paid, common stock									-3,684
Shares surrendered to treasury stock					265,000							18,854
Shares vested (10,400 in 2014, 6,000 in 2013, and no shares in 2012)										76
Consideration for acquisition			11			15,974
Exercise of stock options (7,000 in 2014, 103,400 in 2013, and 40,042 in 2012)		1
Balance, end of year at Dec. 31, 2013	149,257	87			100,961				58,347	-490	-2,897	-6,751
Increase on issuance of common stock from the exercise of stock options					92
Shares awarded (16,500 in 2014, 14,500 in 2013, and 35,000 in 2012)										-243
Net income	10,040								10,040
Net change in accumulated other comprehensive loss, net of tax effect	-442										-442
Tax benefit for stock options and awards					2
Cash dividends declared, preferred stock									-230
Issuance of common stock from dividend reinvestment plan					263
Shares forfeited, shares										0
Cash dividends paid, common stock									-4,281
Shares surrendered to treasury stock												0
Shares vested (10,400 in 2014, 6,000 in 2013, and no shares in 2012)										135
Restricted stock awards issued					243
Redemption of preferred stock					-15,000
Balance, end of year at Dec. 31, 2014	$139,836	$87			$86,561				$63,876	($598)	($3,339)	($6,751)

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Stockholders Equity (Parenthetical)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Exercise of stock options	7,000	103,400	40,042
COMMON STOCK
Exercise of stock options	7,000	103,400	40,042
UNEARNED RESTRICTED STOCK AWARDS
Shares awarded, shares	16,500	14,500	35,000
Shares vested, shares	10,400	6,000	0
TREASURY STOCK
Issuance of restricted stock awards (in shares)	0	14,500	35,000
Surrender of outstanding shares, shares	0	18,854	0
Shares repurchased, shares	0	0	5,000

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income	$10,040	$8,414	$7,759
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,396	1,806	1,431
Net decrease (increase) in mortgage servicing rights	303	-532	-337
Amortization of securities, net	430	781	1,038
Amortization of deferred expenses relating to issuance of capital securities and subordinated debentures	20	11	11
Amortization (accretion) of fair value adjustments, net (loans, deposits and borrowings)	304	-761	122
Amortization of intangible assets	1,688	1,000	425
Net (increase) decrease in loans held-for-sale	-1,320	11,303	-8,549
Net gain on sales of premises, equipment, investment in real estate, other real estate owned and other assets	-197	-6	-40
Impairment losses on other real estate owned	16		183
Net gain on sales and calls of securities	-950	-964	-3,819
Remeasurement gain in equity interest of Charter Holding Corp.		-1,369
Equity in gain of partially owned Charter Holding Corp.		-294	-444
PROVISION FOR LOAN LOSSES	905	962	2,705
Deferred tax expense	1,154	592	479
Tax benefit for stock options and awards	-2	-30	-25
Increase in cash surrender value of life insurance	-635	-626	-545
Decrease in accrued interest receivable and other assets	414	26	1,082
Change in deferred loan origination costs, net	-424	-921	-1,118
(Decrease) increase in accrued expenses and other liabilities	-2,902	1,091	713
Net cash provided by (used in) operating activities	11,240	20,483	1,071
Cash flows from investing activities:
Capital expenditures-investment in real estate		-5	-503
Capital expenditures-software	-141	-286	-70
Capital expenditures-premises and equipment	-2,670	-4,312	-1,297
Purchases of interest-bearing time deposits with other banks	-747		-250
Maturities of interest-bearing time deposits with other banks	1,743	499
Proceeds from sales of securities available-for-sale	125,802	125,773	194,347
Purchases of securities available-for-sale	-204,318	-124,587	-223,664
Proceeds from maturities of securities available-for-sale	89,993	89,312	50,022
Redemption of Federal Home Loan Bank stock	1,373	213	119
Purchases of Federal Home Loan Bank stock	-2,375		-1,627
Capital distribution-Charter Holding Corp., at equity		340	438
Loan originations and principal collections, net	-64,821	-94,515	-96,888
Purchases of loans	-9,702	-10,479	-4,799
Recoveries of loans previously charged off	485	848	596
Proceeds from sales of premises, equipment, investment in real estate, other real estate and other assets	1,673	874	1,409
Investment in bank owned life insurance			-5,000
Premiums paid on life insurance policies	-8	-13	-13
Net cash used in investing activities	-63,713	-1,931	-88,803
Cash flows from financing activities:
Net increase in demand deposits, savings and NOW accounts	62,032	19,985	64,159
Net increase (decrease) in time deposits	2,636	-30,531	-16,320
Increase (decrease) in short-term advances from Federal Home Loan Bank	35,000	-15,000	15,000
Principal advances from Federal Home Loan Bank	40,000	45,000	45,000
Repayment of advances from Federal Home Loan Bank	-55,750	-51,000
Repayment of other borrowed funds			-543
Net (decrease) increase in repurchase agreements	-11,129	10,664	-895
Issuance of common stock from dividend reinvestment plan	109	202
Redemption of stock warrants			-737
Proceeds from issuance of subordinated debentures, net of issuance costs	16,380
Redemption of preferred stock	-15,000
Dividends paid on preferred stock	-230	-316	-848
Dividends paid on common stock	-4,127	-3,684	-3,052
Proceeds from exercise of stock options	92	514	365
Tax benefit for stock options and awards	2	30	25
Net cash (used in) provided by financing activities	70,015	-24,136	102,154
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	17,542	-5,584	14,422
CASH AND CASH EQUIVALENTS, beginning of year	33,578	39,162	24,740
CASH AND CASH EQUIVALENTS, end of year	51,120	33,578	39,162
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Interest paid	6,610	6,588	7,396
Income taxes paid	3,963	2,902	3,633
Loans transferred to other real estate owned	838	330	547
Loans originated from sales of other real estate owned	496		237
Goodwill adjustments, net	56	41
Acquisitions:
Goodwill	44,576	44,632
Insurance Agency Customer List
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of intangible assets	561	241	77
Core Deposits
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of intangible assets	1,100	759	348
Central Financial Corporation
Cash flows from investing activities:
Cash and cash equivalents acquired, net of expenses and cash paid		17,512
Acquisitions:
Cash and cash equivalents acquired		17,512
Interest-bearing time deposits with other banks		1,992
Available-for-sale securities		6,494
Federal Home Loan Bank stock		467
Net loans acquired		127,721
Premises and equipment acquired		2,532
Investment in real estate		1,477
Other real estate owned		1,477
Accrued interest receivable		23
Other assets acquired		1,646
Total assets		164,432
Deposits assumed		149,684
Federal Home Loan Bank borrowings assumed		2,602
Other liabilities assumed		791
Total, liabilities		153,077
Net assets acquired		11,355
Merger costs		15,985
Goodwill	4,380	4,630
Central Financial Corporation | Core Deposits
Acquisitions:
Intangible assets acquired		4,568
Charter Holding Corporation
Cash flows from investing activities:
Cash and cash equivalents acquired, net of expenses and cash paid		-3,105
Acquisitions:
Cash and cash equivalents acquired			3,095
Available-for-sale securities			633
Premises and equipment acquired			1,365
Other assets acquired			1,411
Total assets			10,540
Other liabilities assumed			1,107
Total, liabilities			1,107
Net assets acquired			9,433
Merger costs			12,400
Goodwill	4,760		2,967
Charter Holding Corporation | Insurance Agency Customer List
Acquisitions:
Intangible assets acquired			4,036
Nashua Bank
Cash flows from investing activities:
Cash and cash equivalents acquired, net of expenses and cash paid			-1,623
Acquisitions:
Cash and cash equivalents acquired			2,790
Available-for-sale securities			20,852
Federal Home Loan Bank stock			383
Net loans acquired			88,203
Premises and equipment acquired			729
Investment in real estate			249
Other real estate owned			249
Accrued interest receivable			375
Other assets acquired			95
Total assets			115,762
Deposits assumed			98,479
Federal Home Loan Bank borrowings assumed			1,754
Other liabilities assumed			897
Total, liabilities			101,130
Net assets acquired			14,632
Merger costs			21,378
Goodwill	6,786		6,746
Nashua Bank | Core Deposits
Acquisitions:
Intangible assets acquired			$2,086

Summary_of_significant_account

Summary of significant accounting policies	31 Months Ended
	Dec. 31, 2014
Summary of significant accounting policies	NOTE 1. Summary of significant accounting policies:
	Nature of operations—New Hampshire Thrift Bancshares, Inc. (the “Company”) is a savings and loan holding company headquartered in Newport, New Hampshire. The Company’s subsidiary, Lake Sunapee Bank, fsb (the “Bank”), a federal stock savings bank, operates 36 branches in Chester, Grafton, Hillsborough, Merrimack and Sullivan counties in New Hampshire and Rutland, Windsor and Orange counties in Vermont. Although the Company has a diversified portfolio, a substantial portion of its debtors’ abilities to honor their contracts is dependent on the economic health of the regions. The Company’s primary source of revenue is providing loans to customers who are predominately small and middle-market businesses and individuals.
	Use of estimates in the preparation of financial statements—The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the 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 are the determination of the allowance for loan losses, fair values of investments securities, goodwill and intangibles and income taxes.
	Principles of consolidation—The consolidated financial statements include the accounts of the Company, the Bank, Lake Sunapee Group, Inc. (“LSGI”), which owns and maintains all buildings and investment properties; Lake Sunapee Financial Services Corp. (“LSFSC”), which sells brokerage securities and insurance products to customers; McCrillis & Eldredge Insurance, Inc. (“MEI”), a full-line independent insurance agency acquired in 2011, which offers a complete range of commercial insurance services and consumer products; and Charter Holding Corp. (“CHC”), which wholly owns Charter Trust Company (“CTC”), a trust services and wealth management company. LSGI, LSFSC, MEI, and CHC are wholly owned subsidiaries of the Bank. All significant intercompany accounts and transactions have been eliminated in consolidation.
	NHTB Capital Trust II and NHTB Capital Trust III, affiliates of the Company, were formed to sell capital securities to the public through a third party trust pool. In accordance with the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) 810-10, “Consolidation—Overall,” these subsidiaries have not been included in the consolidated financial statements.
	Cash and cash equivalents—For purposes of reporting cash flows, the Company considers cash and due from banks and Federal Reserve Bank interest-bearing deposit to be cash equivalents. Cash and due from banks as of December 31, 2014 and 2013 includes $11.4 million and $7.3 million, respectively, which is subject to withdrawal and usage restrictions to satisfy the reserve requirements of the Federal Reserve Bank.
	Securities available-for-sale—Available-for-sale securities consist of bonds, notes, debentures, and certain equity securities. Unrealized holding gains and losses, net of tax, on available-for-sale securities are reported as a net amount in a separate component of stockholders’ equity until realized. Gains and losses on the sale of available-for-sale securities are determined using the specific-identification method.
	Securities held-to-maturity—Bonds, notes and debentures which the Company has the positive intent and ability to hold to maturity are reported at cost, adjusted for premiums and discounts recognized in interest income using the interest method over the period to maturity. For any debt security with a fair value less than its amortized cost basis, the Company will determine whether it has the intent to sell the debt security or whether it is more likely than not it will be required to sell the debt security before the recovery of its amortized cost basis. If either condition is met, the Company will recognize a full impairment charge to earnings. For all other debt securities that are considered other-than-temporarily impaired and do not meet either condition, the credit loss portion of impairment will be recognized in earnings as realized losses. The other-than-temporary impairment related to all other factors will be recorded in other comprehensive income.
	Declines in marketable equity securities below their cost that are deemed other than temporary are reflected in earnings as realized losses.
	Securities held for trading—Trading securities are carried at fair value on the consolidated balance sheets. Unrealized holding gains and losses for trading securities are included in earnings.
	Federal Home Loan Bank stock—As a member of the Federal Home Loan Bank (“FHLB”), the Company is required to invest in $100 par value stock of the FHLB. The FHLB capital structure mandates that members must own stock as determined by their Total Stock Investment Requirement which is the sum of a member’s Membership Stock Investment Requirement and Activity-Based Stock Investment Requirement. The Membership Stock Investment Requirement is calculated as 0.35% of a member’s Stock Investment Base, subject to a minimum investment of $10,000 and a maximum investment of $25,000,000. The Stock Investment Base is an amount calculated based on certain assets held by a member that are reflected on call reports submitted to applicable regulatory authorities. The Activity-Based Stock Investment Requirement is calculated as 3.0% for overnight advances, 4.0% for FHLB advances with original terms to maturity of two days to three months and 4.5% for other advances plus a percentage of advance commitments, 0.5% of standby letters of credit issued by the FHLB and 4.5% of the value of intermediated derivative contracts. Management evaluates the Company’s investment in FHLB stock for other-than-temporary impairment at least on a quarterly basis and more frequently when economic or market conditions warrant such evaluation. Based on its most recent analysis of the FHLB as of December 31, 2014, management deems its investment in FHLB stock to be not other-than-temporarily impaired.
	Investment in CHC—Through September 3, 2013, the Company owned a 50% interest in CHC with one other New Hampshire bank. On September 4, 2013, the Company purchased the other bank’s ownership interest. As a result, the Bank wholly owned CHC at December 31, 2014 and December 31, 2013, and the accounts of CHC are included in the consolidated financial statements at said dates. Headquartered in Concord, New Hampshire, CHC provides trust and investment services from six offices across New Hampshire. Charter New England Agency, a subsidiary of CHC, provides life insurance, fixed and variable annuities and mutual fund products, in addition to full brokerage services.
	The Bank used the equity method of accounting to account for its 50% ownership investment in CHC through September 3, 2013. An investor using the equity method initially records an investment at cost. Subsequently, the carrying amount of the investment is increased to reflect the investor’s share of income of the investee and is reduced to reflect the investor’s share of losses of the investee or dividends received from the investee. The investor’s share of the income or losses of the investee is included in the investor’s net income as the investee reports them. Adjustments similar to those made in preparing consolidated financial statements, such as elimination of intercompany gains and losses, also are applicable to the equity method.
	Loans held-for-sale—Mortgage loans originated and intended for sale in the secondary market are carried at the lower of cost or estimated market value in the aggregate. Net unrealized losses are recognized through a valuation allowance by charges to income. No losses have been recorded.
	Nonaccrual loans—Residential real estate loans and consumer loans are placed on nonaccrual status when they become 90 days past due. Commercial loans are placed on nonaccrual status when they become 90 days past due or when it becomes probable that the Bank will be unable to collect all amounts due pursuant to the terms of the loan agreement. When a loan has been placed on nonaccrual status, previously accrued interest is reversed with a charge against interest income on loans. Interest received on nonaccrual loans is generally booked to interest income on a cash basis. Residential real estate loans and consumer loans generally are returned to accrual status when they are no longer over 90 days past due. Commercial loans are generally returned to accrual status when the collectability of principal and interest is reasonably assured.
	Acquired loans—Acquired loans that have evidence of deterioration in credit quality since origination and for which it is probable, at acquisition, that all contractually required payments will not be collected are initially recorded at fair value without recording an allowance for loan losses. Fair value of the loans is determined using market participant assumptions in estimating the amount and timing of both principal and interest cash flows expected to be collected, as adjusted for an estimate of future credit losses and prepayments, and then applying a market-based discount rate to those cash flows.
	Under the accounting model for acquired loans, the excess of cash flows expected to be collected over the carrying amount of the loans, referred to as the “accretable yield,” is accreted into interest income over the life of the loans using the effective yield method. The difference between contractually required principal and interest payments and the cash flows expected to be collected, referred to as the “nonaccretable difference,” includes estimates of both the impact of prepayments and future credit losses expected to be incurred over the life of the loan. As such, charge-offs on acquired loans are first applied to the nonaccretable difference and then to any allowance for loan losses recognized subsequent to acquisition.
	Actual cash collections are monitored relative to management’s expectations and revised cash flow forecasts are prepared, as warranted. These revised forecasts involved updates, as necessary, of the key assumptions and estimates used in the initial estimate of fair value. Generally speaking, expected cash flows are affected by:
		•		Changes in the expected principal and interest payments over the estimated life—Updates to changes in expected cash flows are driven by the credit outlook and actions taken with borrowers. Changes in expected future cash flows resulting from loan modifications are included in the assessment of expected cash flows;
		•		Changes in prepayment assumptions—Prepayments affect the estimated lives of the loans which may change the amount of interest income, and possibly principal, expected to be collected; and
		•		Changes in interest rate indices for variable rate loans—Expected future cash flows are based, as applicable, on the variable rates in effect at the time of the assessment of expected cash flows.
	Allowance for loan losses—The allowance for loan losses is established as losses are estimated to have occurred through a provision for loan losses charged to earnings. Loan losses are charged against the allowance when management believes the uncollectibility of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance.
	The allowance for loan losses is evaluated on a regular basis by management and is based upon management’s periodic review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available.
	General component—The general component of the allowance for loan losses is based on historical loss experience adjusted for qualitative factors stratified by the following loan segments: residential real estate, commercial real estate, construction, commercial and consumer. Management uses a rolling average of historical losses based on a time frame appropriate to capture relevant loss data for each loan segment. This historical loss factor is adjusted for the following qualitative factors: levels/trends in delinquencies; trends in volume and terms of loans; effects of changes in risk selection and underwriting standards and other changes in lending policies, procedures and practices; experience/ability/depth of lending management and staff; concentration of credit risk and national and local economic trends and conditions. There were no significant changes in the Company’s policies or methodology pertaining to the general component of the allowance for loan losses during 2014.
	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 Bank generally does not originate loans with a loan-to-value ratio greater than 80 percent and does not grant subprime loans. All loans in this segment are collateralized by owner-occupied residential real estate and repayment is dependent on the credit quality of the individual borrower. The overall health of the economy, including unemployment rates and housing prices, will have an effect on the credit quality in this segment. This segment also includes home equity loans.
	Commercial real estate: Loans in this segment are primarily income-producing properties throughout New Hampshire and Vermont. The underlying cash flows generated by the properties are 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. Management periodically obtains rent rolls and continually monitors the cash flows of these loans.
	Construction loans: The Bank offers construction loan financing on one-to-four family owner occupied dwellings in the Bank’s local real estate market. Generally, the Bank makes construction loans up to 80% of value with terms of up to nine months. During the construction phase, inspections are made to assess construction progress and monitor the disbursement of loan proceeds. The Bank also offers a “one-step” construction loan, which provides construction and permanent financing with one loan closing. The “one-step” is provided under the same terms and conditions of the Bank’s conventional residential program.
	Commercial loans: Loans in this segment are made to businesses and are generally secured by assets of the business. Repayment is expected from the cash flows of the business. A weakened economy, and resultant decreased consumer spending, will have an effect on the credit quality in this segment.
	Consumer loans: Loans in this segment are unsecured or secured by collateral such as automobiles, boats and other recreational vehicles. Repayment is dependent on the credit quality of the individual borrower.
	Allocated component—The allocated component relates to loans that are classified as impaired. Impairment is measured on a loan by loan basis for commercial, commercial real estate and construction loans 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 are lower than the carrying value of that loan. Large groups of smaller balance homogeneous loans are collectively evaluated for impairment. Accordingly, the Company does not separately identify individual consumer and residential real estate loans for impairment disclosures, unless such loans meet certain criteria as outlined in the Company’s loan policy or are subject to a troubled debt restructuring agreement.
	A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan by loan basis for commercial and construction loans by either the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s obtainable market price, or the fair value of the collateral if the loan is collateral dependent.
	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.
	Unallocated component—An unallocated component may be 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.
	Deferred loan origination fees/costs—Loan origination fees, commitment fees and certain direct origination costs are deferred, and the net amount is amortized as an adjustment of the related loan’s yield. The Company amortizes these amounts over the contractual lives of the related loans.
	Loan servicing—The Company recognizes as separate assets from their related loans the rights to service mortgage loans for others, either through acquisition of those rights or from the sale or securitization of loans with the servicing rights retained on those loans, based on their relative fair values. To determine the fair value of the servicing rights created, the Company uses the market prices under comparable servicing sale contracts, when available, or alternatively uses a valuation model that calculates the present value of future cash flows to determine the fair value of the servicing rights. In using this valuation method, the Company incorporates assumptions that market participants would use in estimating future net servicing income, which includes estimates of the cost of servicing loans, the discount rate, ancillary income, prepayment speeds and default rates.
	Mortgage servicing rights are amortized in proportion to, and over the period of, estimated net servicing revenues. Refinance activities are considered in estimating the period’s net servicing revenues. Impairment of mortgage servicing rights is assessed based on the fair value of those rights. Fair values are estimated using discounted cash flows based on a current market interest rate. For purposes of measuring impairment, the rights are stratified based on the interest rate risk characteristics of the underlying loans. The amount of impairment recognized is the amount by which the capitalized mortgage servicing rights for a stratum exceed their fair value.
	Concentration of credit risk—Most of the Company’s business activity is with customers located within the states of New Hampshire and Vermont. There are no concentrations of credit to borrowers that have similar economic characteristics. The majority of the Company’s loan portfolio is composed of loans collateralized by real estate located in the states of New Hampshire and Vermont.
	Premises and equipment—Company premises and equipment are stated at cost, less accumulated depreciation. Depreciation is computed using straight-line and accelerated methods over the estimated useful lives of the assets. Estimated lives are 5 to 40 years for buildings and premises and 3 to 15 years for furniture, fixtures and equipment. Expenditures for replacements or major improvements are capitalized and expenditures for normal maintenance and repairs are charged to expense as incurred. Upon the sale or retirement of Company premises and equipment, the cost and accumulated depreciation are removed from the respective accounts and any gain or loss is included in income.
	Investment in real estate—Investment in real estate is carried at the lower of cost or estimated fair value. The buildings are being depreciated over their useful lives. The properties consist of three buildings that the Company rents for commercial purposes. Rental income is recorded in income when received and expenses for maintaining these assets are charged to expense as incurred.
	Real estate owned and property acquired in settlement of loans—The Company classifies loans as in-substance repossessed or foreclosed if the Company receives physical possession of the debtor’s assets regardless of whether formal foreclosure proceedings take place. At the time of foreclosure or possession, the Company records the property at estimated fair value minus estimated costs to sell. All properties are periodically reviewed and declines in the value of the property are charged against income.
	Earnings per share—Basic earnings per share represents net income available to common stockholders divided by the weighted-average number of common shares outstanding during the period. If rights to dividends on unvested options/awards are non-forfeitable, these unvested awards/options are considered outstanding in the computation of basic earnings per share. Diluted earnings per share, if applicable, reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity.
	Advertising—The Company directly expenses costs associated with advertising as they are incurred.
	Income taxes—The Company recognizes income taxes under the asset and liability method. Under this method, deferred tax assets and liabilities are established for the temporary differences between the accounting basis and the tax basis of the Company’s assets and liabilities at enacted tax rates expected to be in effect when the amounts related to such temporary differences are realized or settled.
	Goodwill and other intangibles—Business combinations are accounted for using the acquisition method of accounting. Accordingly, the net assets of the companies acquired are recorded at their fair values at the date of acquisition. Goodwill represents the excess of purchase price over the fair value of net assets acquired and is assigned to specific reporting units which are the same as the operating segments. Other intangible assets represent purchased assets that lack physical substance, but can be distinguished from goodwill because of contractual or other legal rights, or because the asset is capable of being sold or exchanged either on its own, or in combination with a related contract, asset, or liability.
	The Company evaluates goodwill and other intangibles on an annual basis or whenever there is an indicator of impairment. Any impairment losses are charged to earnings. The Company amortizes other intangible assets over their respective estimated useful lives. The Company has estimated the remaining useful life of its insurance agency customer list intangible, trust company customer list intangible, and core deposit intangible assets to have a weighted-average of fifteen years, fifteen years, and ten years, respectively. Intangible assets are stated at cost less accumulated amortization.
	Fair value of financial instruments—The following methods and assumptions were used by the Company in estimating fair values of financial instruments as disclosed herein:
	Cash and cash equivalents—The carrying amounts of cash and cash equivalents approximate their fair values.
	Available-for-sale securities—Fair values for available-for-sale securities are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments.
	Loans held-for-sale—Fair values of loans held-for-sale are based on estimated market values.
	Loans receivable—For variable-rate loans that reprice frequently and have no significant change in credit risk, fair values are based on carrying values. Fair values for all other loans are estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. Fair values for impaired loans are estimated using discounted cash flow analyses or underlying collateral values, where applicable.
	Investment in unconsolidated subsidiaries—Fair value of investment in unconsolidated subsidiaries is estimated using discounted cash flow analyses, using interest rates currently being offered for similar investments.
	Accrued interest receivable—The carrying amounts of accrued interest receivable approximate their fair values.
	Deposit liabilities—The fair values disclosed for demand deposits are, by definition, equal to the amount payable on demand at the reporting date (that is, their carrying amounts). The carrying amounts of variable-rate, fixed term money-market accounts and certificates of deposits (CDs) approximate their fair values at the reporting date. Fair values for fixed-rate CDs are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits.
	Federal Home Loan Bank advances—Fair values for FHLB advances are estimated using a discounted cash flow technique that applies interest rates currently being offered on advances to a schedule of aggregated expected monthly maturities on FHLB advances.
	Securities sold under agreements to repurchase—The carrying amounts of securities sold under agreements to repurchase approximate their fair values.
	Subordinated debentures—Fair values of subordinated debentures are estimated using discounted cash flow analyses, using interest rates currently being offered for debentures with similar terms.
	Derivative financial instruments—Fair values for interest rate swap agreements are based upon the amounts required to settle the contracts.
	Off-balance sheet instruments—Fair values for loan commitments have not been presented as the future revenue derived from such financial instruments is not significant.
	Interest rate swap agreement—For asset/liability management purposes, the Company uses interest rate swap agreements to hedge various exposures or to modify interest rate characteristics of various balance sheet accounts. Such derivatives are used as part of the asset/liability management process and are linked to specific assets or liabilities, and have high correlation between the contract and the underlying item being hedged, both at inception and throughout the hedge period. At December 31, 2014 and 2013, the Company had no active interest rate swap agreements.
	The Company may utilize interest rate swap agreements to convert a portion of its variable-rate debt to a fixed rate (cash flow hedge). Interest rate swaps are contracts in which a series of interest rate flows are exchanged over a prescribed period. The notional amount on which the interest payments are based is not exchanged.
	The effective portion of the gain or loss on a derivative designated and qualifying as a cash flow hedging instrument is initially reported as a component of other comprehensive income and subsequently reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. The ineffective portion of the gain or loss on the derivative instrument, if any, is recognized currently in earnings.
	Interest rate derivative financial instruments receive hedge accounting treatment only if they are designated as a hedge and are expected to be, and are, effective in substantially reducing interest rate risk arising from the assets and liabilities identified as exposing the Company to risk. Those derivative financial instruments that do not meet the hedging criteria discussed below would be classified as trading activities and would be recorded at fair value with changes in fair value recorded in income. Derivative hedge contracts must meet specific effectiveness tests (i.e., over time the change in their fair values due to the designated hedge risk must be within 80 to 125 percent of the opposite change in the fair values of the hedged assets or liabilities). Changes in fair value of the derivative financial instruments must be effective at offsetting changes in the fair value of the hedged items due to the designated hedge risk during the term of the hedge. Further, if the underlying financial instrument differs from the hedged asset or liability, there must be a clear economic relationship between the prices of the two financial instruments. If periodic assessment indicates derivatives no longer provide an effective hedge, the derivatives contracts would be closed out and settled or classified as a trading activity.
	Hedges of variable-rate debt are accounted for as cash flow hedges, with changes in fair value recorded in other assets or liabilities and other comprehensive income. The net settlement (upon close out or termination) that offsets changes in the value of the hedged debt is deferred and amortized into net interest income over the life of the hedged debt. The portion, if any, of the net settlement amount that did not offset changes in the value of the hedged asset or liability is recognized immediately in non-interest income.
Cash flows resulting from the derivative financial instruments that are accounted for as hedges of assets and liabilities are classified in the cash flow statement in the same category as the cash flows of the items being hedged.
Stock based compensation—At December 31, 2014, the Company has one stock-based employee compensation plan under which additional shares are available to be granted. The Company accounts for this plan under ASC 718-10, “Compensation—Stock Compensation—Overall.” See Note 11.
Operating Segments—The Company’s operations are managed along two reportable segments that represent the core businesses: Banking and Wealth Management. The Banking segment provides a wide array of lending and depository-related products and services to individuals, businesses and municipal enterprises. The Banking segment also provides insurance and brokerage services through the Bank’s subsidiaries, MEI and LSFSC, respectively. The Wealth Management segment provides trust and investment services through the Bank’s subsidiaries, CHC and CTC. A summary of the financial results for each of our operating segments is included in note 23—Operating Segments.
Recent Accounting Pronouncements—In January 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-01, “Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects.” The amendments in this ASU apply to all reporting entities that invest in qualified affordable housing projects through limited liability entities that are flow-through entities for tax purposes as follows:
	1	For reporting entities that meet the conditions for and that elect to use the proportional amortization method to account for investments in qualified affordable housing projects, all amendments in this ASU apply.
	2	For reporting entities that do not meet the conditions for or that do not elect the proportional amortization method, only the amendments in this ASU that are related to disclosures apply.
The amendments in this ASU permit reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). For those investments in qualified affordable housing projects not accounted for using the proportional amortization method, the investment should be accounted for as an equity method investment or a cost method investment in accordance with Subtopic 970-323. The amendments in this ASU should be applied retrospectively to all periods presented. A reporting entity that uses the effective yield method to account for its investments in qualified affordable housing projects before the date of adoption may continue to apply the effective yield method for those preexisting investments. The amendments in this ASU are effective for annual periods and interim reporting periods within those annual periods, beginning after December 15, 2014. Early adoption is permitted. The Company anticipates that the adoption of this guidance will not have a material impact on its consolidated financial statements.
In January 2014, the FASB issued ASU 2014-04, “Receivables-Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure.” The objective of the amendments in this ASU is to reduce diversity by clarifying when an in substance repossession or foreclosure occurs, that is, when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan receivable should be derecognized and the real estate property recognized. The amendments in this ASU clarify that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (i) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (ii) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosure of both (i) the amount of foreclosed residential real estate property held by the creditor and (ii) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. The amendments in this ASU are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. The Company can elect to adopt the amendments in this ASU using either a modified retrospective transition method or a prospective transition method. The Company anticipates that the adoption of this guidance will not have a material impact on its consolidated financial statements.
In April 2014, the FASB issued ASU 2014-08, “Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity.” This ASU changes the criteria for reporting discontinued operations and modifies related disclosure requirements. The new guidance is effective on a prospective basis for fiscal years beginning on or after December 15, 2014, and interim periods within those years. The Company anticipates that the adoption of this guidance will not have a material impact on its consolidated financial statements.
In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606).” The objective of this ASU is to clarify principles for recognizing revenue and to develop a common revenue standard for GAAP and International Financial Reporting Standards. The guidance in this ASU affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards. The core principal of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendments in this update are effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The Company is currently reviewing this ASU to determine if it will have an impact on its consolidated financial statements.
In June 2014, the FASB issued ASU 2014-11, “Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures.” The amendments in this ASU require two accounting changes. First, the amendments in this ASU change the accounting for repurchase-to-maturity transactions to secured borrowing accounting. Second, for repurchase financing arrangements, the amendments require separate accounting for a transfer of a financial asset executed contemporaneously with a repurchase agreement with the same counterparty, which will result in secured borrowing accounting for the repurchase agreement. This ASU also includes new disclosure requirements. The accounting changes in this Update are effective for the first interim or annual period beginning after December 15, 2014. An entity is required to present changes in accounting for transactions outstanding on the effective date as a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. Earlier application is prohibited. The Company anticipates that the adoption of this guidance will not have a material impact on its consolidated financial statements.
In June 2014, the FASB issued ASU 2014-12, “Compensation—Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could be Achieved after the Requisite Service Period.” The amendments in this ASU require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. A reporting entity should apply existing guidance in Topic 718 as it relates to awards with performance conditions that affect vesting to account for such awards. This ASU is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2015. Earlier adoption is permitted. ASU 2014-12 may be adopted either (a) prospectively to all awards granted or modified after the effective date or (b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements, and to all new or modified awards thereafter. If retrospective transition is adopted, the cumulative effect of applying this update as of the beginning of the earliest annual period presented in the financial statements should be recognized as an adjustment to the opening retained earnings balance at that date. The Company anticipates that the adoption of this guidance will not have a material impact on its consolidated financial statements.
In August 2014, the FASB issued ASU 2014-13, “Consolidation (Topic 810): Measuring the Financial Assets and the Financial Liabilities of a Consolidated Collateralized Financing Entity.” This ASU applies to entities that meet the following criteria:
	1	they are required to consolidate a collateralized entity under the Variable Interest Entities guidance;
	2	they measure all of the financial assets and the financial liabilities of that consolidated collateralized financing entity at fair value in the consolidated financial statements based on other FASB rules; and
	3	those changes in fair value are reflected in earnings.
Under ASU 2014-13, entities that meet these criteria are provided an alternative under which they can choose to eliminate the difference between the fair value of financial assets and financial liabilities of a consolidated collateralized financing entity. If that alternative is not elected, then ASU 2014-13 indicates that the fair value of the financial assets and the fair value of the financial liabilities of the consolidated collateralized financing entity should be measured in accordance with ASC 820, “Fair Value Measurement,” and differences between the fair value of the financial assets and the financial liabilities of that consolidated collateralized financing entity should be reflected in earnings and attributed to the reporting entity in the consolidated statement of income or loss. The amendments in this ASU are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2015. The Company anticipates that the adoption of this ASU will not have an impact on its consolidated financial statements.
In August 2014, the FASB issued ASU 2014-14, “Receivables—Troubled Debt Restructurings by Creditors (Subtopic 310-40): Classification of Certain Government—Guaranteed Mortgage Loans upon Foreclosure.” The amendments in this ASU require that a mortgage loan be derecognized and that a separate other receivable be recognized upon foreclosure if the following conditions are met:
	1	the loan has a government guarantee that is not separable from the loan before foreclosure;
	2	at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim; and
	3	at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed.
Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor. The amendments in this ASU are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. The Company anticipates that the adoption of this ASU will not have a material impact on its consolidated financial statements.
In August 2014, the FASB issued ASU 2014-15, “Presentation of Financial Statements—Going Concern (Subtopic 205-40).” The amendments in this ASU provide guidance about management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. The amendments require management to assess an entity’s ability to continue as a going concern by incorporating and expanding upon certain principles that are currently in U.S. auditing standards. Specifically, the amendments (1) provide a definition of the term substantial doubt, (2) require an evaluation every reporting period including interim periods, (3) provide principles for considering the mitigating effect of management’s plans, (4) require certain disclosures when substantial doubt is alleviated as a result of consideration of management’s plans, (5) require an express statement and other disclosures when substantial doubt is not alleviated, and (6) require an assessment for a period of one year after the date that the financial statements are issued (or available to be issued). The amendments in this ASU are effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted. The adoption of this guidance is not expected to have an impact on the Company’s results of operations or financial position.
In November 2014, the FASB issued ASU 2014-16, “Derivatives and Hedging (Topic 815).” The objective of this ASU is to eliminate the use of different methods in practice and thereby reduce existing diversity under GAAP in the accounting for hybrid financial instruments issued in the form of a share. The amendments in this ASU apply to all entities that are issuers of, or investors in, hybrid financial instruments that are issued in the form of a share. The amendments in this ASU do not change the current criteria in GAAP for determining when separation of certain embedded derivative features in a hybrid financial instrument is required. The amendments clarify how current GAAP should be interpreted in evaluating the economic characteristics and risks of a host contract in a hybrid financial instrument that is issued in the form of a share. Specifically, the amendments clarify that an entity should consider all relevant terms and features, including the embedded derivative feature being evaluated for bifurcation, in evaluating the nature of the host contract. Furthermore, the amendments clarify that no single term or feature would necessarily determine the economic characteristics and risks of the host contract. Rather, the nature of the host contract depends upon the economic characteristics and risks of the entire hybrid financial instrument. In addition, the amendments in this ASU clarify that, in evaluating the nature of a host contract, an entity should assess the substance of the relevant terms and features when considering how to weight those terms and features. Specifically, the assessment of the substance of the relevant terms and features should incorporate a consideration of (1) the characteristics of the terms and features themselves, (2) the circumstances under which the hybrid financial instrument was issued or acquired, and (3) the potential outcomes of the hybrid financial instrument, as well as the likelihood of those potential outcomes. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The adoption of this guidance is not expected to have an impact on the Company’s results of operations or financial position.
In November 2014, the FASB issued ASU 2014-17, “Business Combinations (Topic 805): Pushdown Accounting.” The amendments in this ASU provide guidance on whether and at what threshold an acquired entity that is a business or nonprofit activity may elect to apply pushdown accounting in its separate financial statements upon a change-in-control event in which an acquirer obtains control of the acquired entity. The amendments in this ASU are effective on November 18, 2014. After the effective date, an acquired entity can make an election to apply the guidance to future change-in-control events or to its most recent change-in-control event. However, if the financial statements for the period in which the most recent change-in-control event occurred already have been issued or made available to be issued, the application of this guidance would be a change in accounting principle. The adoption of this guidance did not have an impact on the Company’s results of operations or financial position.
In January 2015, the FASB issued ASU 2015-01, “Income Statement—Extraordinary and Unusual Items (Subtopic 225-20).” The amendments in this ASU eliminate the concept of extraordinary items. Eliminating the concept of extraordinary items will save time and reduce costs for preparers because they will not have to assess whether a particular event or transaction event is extraordinary (even if they ultimately would conclude it is not). This also alleviates uncertainty for preparers, auditors, and regulators because auditors and regulators no longer will need to evaluate whether a preparer treated an unusual and/or infrequent item appropriately. The presentation and disclosure guidance for items that are unusual in nature or occur infrequently will be retained and will be expanded to include items that are both unusual in nature and infrequently occurring. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. A reporting entity may apply the amendments prospectively. A reporting entity also may apply the amendments retrospectively to all prior periods presented in the financial statements. Early adoption is permitted provided that the guidance is applied from the beginning of the fiscal year of adoption. The adoption of this guidance is not expected to have an impact on the Company’s results of operations or financial position.

Issuance_of_capital_securities

Issuance of capital securities	31 Months Ended
	Dec. 31, 2014
Issuance of capital securities	NOTE 2. Issuance of capital securities:
	On March 30, 2004, NHTB Capital Trust II (“Trust II”), a Connecticut statutory trust formed by the Company, completed the sale of $10.0 million of Floating Capital Securities, adjustable every three months at LIBOR plus 2.79% (“Capital Securities II”). Trust II also issued common securities to the Company and used the net proceeds from the offering to purchase a like amount of Junior Subordinated Deferrable Interest Debentures (“Debentures II”) of the Company. Debentures II are the sole assets of Trust II. The Company used a portion of the proceeds to redeem the balance of securities issued by NHTB Capital Trust I, which were callable on September 30, 2004. The balance of the proceeds of Trust II is being used for general corporate purposes. Total expenses associated with the offering of $160 thousand are included in other assets and are being amortized on a straight-line basis over the life of Debentures II.
	Capital Securities II accrue and pay distributions quarterly based on the stated liquidation amount of $10 per Capital Security. The Company has fully and unconditionally guaranteed all of the obligations of Trust II. The guaranty covers the quarterly distributions and payments on liquidation or redemption of Capital Securities II, but only to the extent that Trust II has funds necessary to make these payments.
	Capital Securities II are mandatorily redeemable upon the maturing of Debentures II on March 30, 2034 or upon earlier redemption as provided in the Indenture. The Company has the right to redeem Debentures II, in whole or in part at the liquidation amount plus any accrued but unpaid interest to the redemption date.
	On March 30, 2004, NHTB Capital Trust III (“Trust III”), a Connecticut statutory trust formed by the Company, completed the sale of $10.0 million of 6.06% 5 Year Fixed-Floating Capital Securities (“Capital Securities III”). Trust III also issued common securities to the Company and used the net proceeds from the offering to purchase a like amount of 6.06% Junior Subordinated Deferrable Interest Debentures (“Debentures III”) of the Company. Debentures III are the sole assets of Trust III. The Company used the proceeds to redeem the securities issued by NHTB Capital Trust I, a wholly owned subsidiary of the Company, which were callable on September 30, 2004. Total expenses associated with the offering of $160 thousand are included in other assets and are being amortized on a straight-line basis over the life of Debentures III.
	Capital Securities III accrue and pay distributions quarterly at an annual rate of 6.06% for the first 5 years of the stated liquidation amount of $10 per Capital Security. The Company has fully and unconditionally guaranteed all of the obligations of the Trust. The guaranty covers the quarterly distributions and payments on liquidation or redemption of Capital Securities III, but only to the extent that the Trust has funds necessary to make these payments.
	Capital Securities III are mandatorily redeemable upon the maturing of Debentures III on March 30, 2034 or upon earlier redemption as provided in the Indenture. The Company has the right to redeem Debentures III, in whole or in part, at the liquidation amount plus any accrued but unpaid interest to the redemption date.
	On October 29, 2014, the Company entered into a Subordinated Note Purchase Agreement with certain accredited investors under which the Company issued an aggregate of $17.0 million of subordinated notes (the “Notes”) to the accredited investors. The Notes have a maturity date of November 1, 2024, and will bear interest at a fixed rate of 6.75% per annum. The Company may, at its option, beginning with the interest payment date of November 1, 2019, and on any interest payment date thereafter, redeem the Notes, in whole or in part, at par plus accrued and unpaid interest to the date of redemption. Any partial redemption will be made pro rata among all of the noteholders. The Notes are not subject to repayment at the option of the noteholders. The Notes will be unsecured, subordinated obligations of the Company and will rank junior in right of payment to the Company’s senior indebtedness and to the Company’s obligations to its general creditors.

Securities

Securities	31 Months Ended
	Dec. 31, 2014
Securities	NOTE 3. Securities:
	Debt and equity securities have been classified in the consolidated balance sheets according to management’s intent.
	The amortized cost of securities and their approximate fair values are summarized as follows:
	(Dollars in thousands)	Amortized		Gross		Gross		Fair
		Cost		Unrealized		Unrealized		Value
		Basis		Gains		Losses
	December 31, 2014:
	Available-for-sale securities
	Bonds and notes—
	U.S. Treasury notes	$	40,512	$	—	$	389	$	40,123
	U.S. Government-sponsored enterprise bonds		7,361		2		98		7,265
	Mortgage-backed securities		58,439		112		271		58,280
	Municipal bonds		9,579		103		86		9,596
	Other bonds and debentures		114		12		—		126
	Equity securities		258		51		1		308
	Total available-for-sale	$	116,263	$	280	$	845	$	115,698
	December 31, 2013:
	Available-for-sale securities
	Bonds and notes—
	U.S. Treasury notes	$	50,683	$	—	$	667	$	50,016
	U.S. Government-sponsored enterprise bonds		7,388		4		232		7,160
	Mortgage-backed securities		47,612		27		992		46,647
	Municipal bonds		20,532		63		489		20,106
	Other bonds and debentures		263		12		—		275
	Equity securities		742		292		—		1,034
	Total available-for-sale	$	127,220	$	398	$	2,380	$	125,238
	For the year ended December 31, 2014, proceeds from sales of securities available-for-sale amounted to $125.8 million. Gross gains of $951 thousand and gross losses of $1 thousand were realized during 2014 on sales of available-for-sale securities. The tax provision applicable to these net realized gains amounted to $376 thousand. For the year ended December 31, 2013, proceeds from sales of securities available-for-sale amounted to $125.8 million. Gross gains of $1.2 million and gross losses of $222 thousand were realized during 2013 on sales of available-for-sale securities. The tax provision applicable to these net realized gains amounted to $382 thousand. For the year ended December 31, 2012, proceeds from sales of securities available-for-sale amounted to $194.3 million. Gross gains of $3.8 million and no gross losses were realized during 2012 on sales of available-for-sale securities. The tax provision applicable to these net realized gains amounted to $1.5 million.
	Maturities of debt securities, excluding mortgage-backed securities, classified as available-for-sale are as follows as of December 31, 2014:
	(Dollars in thousands)	Fair
		Value
	U.S. Treasury notes	$	10,075
	Municipal bonds		945
	Total due in less than one year	$	11,020
	U.S. Treasury notes	$	30,048
	U.S. Government-sponsored enterprise bonds		6,906
	Municipal bonds		4,509
	Other bonds and debentures		97
	Total due after one year through five years	$	41,560
	U.S. Government-sponsored enterprise bonds	$	188
	Municipal bonds		2,932
	Total due after five years through ten years	$	3,120
	U.S. Government-sponsored enterprise bonds	$	171
	Municipal bonds		1,210
	Other bonds and debentures		29
	Total due after ten years	$	1,410
	There were no issuers of securities, other than U.S. government and agency obligations, whose aggregate carrying value exceeded 10% of stockholders’ equity as of December 31, 2014.
	Securities carried at $115.1 million and $120.1 million were pledged to secure public deposits, Federal Home Loan Bank advances and securities sold under agreements to repurchase as of December 31, 2014 and 2013, respectively.
	The aggregate fair value and unrealized losses of securities that have been in a continuous unrealized loss position for less than twelve months and for twelve months or more, and are not other-than-temporarily impaired, are as follows as of December 31:
		Less than 12 Months				12 Months or Longer				Total
	(Dollars in thousands)	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
		Value		Losses		Value		Losses		Value		Losses
	December 31, 2014:
	Bonds and notes—
	U.S. Treasury notes	$	10,112	$	53	$	20,012	$	336	$	30,124	$	389
	U.S. Government-sponsored enterprise bonds		—		—		7,077		98		7,077		98
	Mortgage-backed securities		12,109		14		13,675		257		25,784		271
	Municipal bonds		—		—		3,554		86		3,554		86
	Equity securities		42		1		—		—		42		1
	Total temporarily impaired securities	$	22,263	$	68	$	44,318	$	777	$	66,581	$	845
	December 31, 2013:
	Bonds and notes—
	U.S. Treasury notes	$	29,961	$	273	$	10,056	$	394	$	40,017	$	667
	U.S. Government-sponsored enterprise bonds		6,954		232		—		—		6,954		232
	Mortgage-backed securities		38,574		663		5,976		329		44,550		992
Municipal bonds		10,140		489		—		—		10,140		489
Total temporarily impaired securities	$	85,629	$	1,657	$	16,032	$	723	$	101,661	$	2,380
The investments in the Company’s investment portfolio that are temporarily impaired as of December 31, 2014 consist of bonds and mortgage-backed securities issued by U.S. government—sponsored enterprises and agencies, municipal bonds, U.S. Treasury notes and equity securities. The unrealized losses on these debt securities are primarily attributable to changes in market interest rates and current market inefficiencies. As Company management has the ability and intent to hold debt securities until maturity, no declines are deemed to be other-than-temporary. The unrealized losses on equity securities have occurred for less than 12 months and the Company does not feel the losses relate to credit quality of the issuers. The Company has the ability and intent to hold these investments until a recovery of cost basis.

Loans_receivable

Loans receivable	31 Months Ended
	Dec. 31, 2014
Loans receivable	NOTE 4. Loans receivable:
	Loans receivable consisted of the following as of December 31:
			2014									2013
	(Dollars in thousands)		Originated			Acquired			Total			Originated			Acquired			Total
	Real estate:
	Conventional		$	592,386		$	53,304		$	645,690		$	536,588		$	65,682		$	602,270
	Home equity			63,176			6,027			69,203			63,736			6,828			70,564
	Commercial			235,640			77,377			313,017			198,741			89,072			287,813
	Construction			34,988			1,457			36,445			26,062			3,660			29,722
				926,190			138,165			1,064,355			825,127			165,242			990,369
	Commercial and municipal loans			125,161			13,414			138,575			121,256			18,815			140,071
	Consumer loans			7,438			1,712			9,150			6,829			2,988			9,817
	Total loans			1,058,789			153,291			1,212,080			953,212			187,045			1,140,257
	Allowance for loan losses			(9,269	)		—			(9,269	)		(9,757	)		—			(9,757	)
	Deferred loan origination costs, net			4,034			—			4,034			3,610			—			3,610
	Loans receivable, net		$	1,053,554		$	153,291		$	1,206,845		$	947,065		$	187,045		$	1,134,110
	Certain directors and executive officers of the Company and companies in which they have significant ownership interest were customers of the Bank during 2014. Total outstanding loan balances to such persons and their companies amounted to $537 thousand as of December 31, 2014. During 2014, principal advances of $516 thousand were made and principal payments totaled $2.9 million.
	The following table sets forth information regarding the allowance for loan and lease losses by portfolio segment as of and for the years ended December 31:
			Real Estate:
	(Dollars in thousands)		Conventional and			Commercial			Construction			Commercial			Consumer			Unallocated			Total
			Home Equity									and Municipal
	December 31, 2014:
	Allowance for loan losses:
	Originated:
	Beginning balance		$	5,385		$	2,143		$	353		$	1,561		$	75		$	240		$	9,757
	Charge-offs			(681	)		(533	)		—			(445	)		(219	)		—			(1,878	)
	Recoveries			314			1			—			57			113			—			485
	(Benefit) provision			(255	)		1,113			638			(538	)		117			(170	)		905
	Ending balance		$	4,763		$	2,724		$	991		$	635		$	86		$	70		$	9,269
	Acquired:
	Beginning balance		$	—		$	—		$	—		$	—		$	—		$	—		$	—
	Charge-offs			—			—			—			—			—			—			—
	Recoveries			—			—			—			—			—			—			—
	Provision (benefit)			—			—			—			—			—			—			—
	Ending balance		$	—		$	—		$	—		$	—		$	—		$	—		$	—
	Originated:
	Individually evaluated for impairment		$	50		$	17		$	—		$	—		$	—		$	—		$	67
	Collectively evaluated for impairment			4,713			2,707			991			635			86			70			9,202
	Acquired loans:
	(discounts related to credit quality)			—			—			—			—			—			—			—
	Total allowance for loan losses ending balance		$	4,763		$	2,724		$	991		$	635		$	86		$	70		$	9,269
	Loans:
	Originated:
	Individually evaluated for impairment		$	5,965		$	8,110		$	1,163		$	880		$	—		$	—		$	16,118
	Collectively evaluated for impairment			649,597			227,530			33,825			124,281			7,438			—			1,042,671
	Acquired loans:
	(discounts related to credit quality)			59,331			77,377			1,457			13,414			1,712			—			153,291
	Total loans ending balance		$	714,893		$	313,017		$	36,445		$	138,575		$	9,150		$	—		$	1,212,080
			Real Estate:
	(Dollars in thousands)		Conventional and			Commercial			Construction			Commercial			Consumer			Unallocated			Total
			Home Equity									and Municipal
	December 31, 2013:
	Allowance for loan losses:
	Originated:
	Beginning balance		$	4,897		$	3,616		$	208		$	918		$	58		$	226		$	9,923
	Charge-offs			(851	)		(593	)		—			(302	)		(230	)		—			(1,976	)
	Recoveries			267			284			—			154			142			—			847
	Provision (benefit)			1,072			(1,164	)		145			791			105			14			963
	Ending balance		$	5,385		$	2,143		$	353		$	1,561		$	75		$	240		$	9,757
	Acquired:
	Beginning balance		$	—		$	—		$	—		$	—		$	—		$	—		$	—
	Charge-offs			—			—			—			—			—			—			—
	Recoveries			—			—			—			—			—			—			—
	Provision (benefit)			—			—			—			—			—			—			—
Ending balance		$	—		$	—		$	—		$	—		$	—		$	—		$	—
Originated:
Individually evaluated for impairment		$	71		$	116		$	—		$	10		$	—		$	—		$	197
Collectively evaluated for impairment			5,314			2,027			353			1,551			75			240			9,560
Acquired loans:
(discounts related to credit quality)			—			—			—			—			—			—			—
Total allowance for loan losses ending balance		$	5,385		$	2,143		$	353		$	1,561		$	75		$	240		$	9,757
Loans:
Originated:
Individually evaluated for impairment		$	6,716		$	11,363		$	1,494		$	1,582		$	—		$	—		$	21,155
Collectively evaluated for impairment			593,608			187,378			24,568			119,674			6,829			—			932,057
Acquired loans:
(discounts related to credit quality)			72,510			89,072			3,660			18,815			2,988			—			187,045
Total loans ending balance		$	672,834		$	287,813		$	29,722		$	140,071		$	9,817		$	—		$	1,140,257
		Real Estate:
(Dollars in thousands)		Conventional and			Commercial			Construction			Commercial			Consumer			Unallocated			Total
		Home Equity									and Municipal
December 31, 2012:
Allowance for loan losses:
Originated:
Beginning balance		$	4,845		$	3,146		$	222		$	721		$	58		$	139		$	9,131
Charge-offs			(1,239	)		(474	)		(138	)		(438	)		(220	)		—			(2,509	)
Recoveries			167			56			68			142			163			—			596
Provision (benefit)			1,124			888			56			493			57			87			2,705
Ending balance		$	4,897		$	3,616		$	208		$	918		$	58		$	226		$	9,923
Acquired:
Beginning balance		$	—		$	—		$	—		$	—		$	—		$	—		$	—
Charge-offs			—			—			—			—			—			—			—
Recoveries			—			—			—			—			—			—			—
Provision (benefit)			—			—			—			—			—			—			—
Ending balance		$	—		$	—		$	—		$	—		$	—		$	—		$	—
Originated:
Individually evaluated for impairment		$	232		$	129		$	—		$	—		$	—		$	—		$	361
Collectively evaluated for impairment			4,665			3,487			208			918			58			226			9,562
Acquired loans:
(discounts related to credit quality)			—			—			—			—			—			—			—
Total allowance for loan losses ending balance		$	4,897		$	3,616		$	208		$	918		$	58		$	226		$	9,923
Loans:
Originated:
Individually evaluated for impairment		$	6,964		$	9,988		$	1,527		$	402		$	—		$	—		$	18,881
Collectively evaluated for impairment			519,417			168,586			13,706			93,278			6,595			—			801,582
Acquired loans:
(discounts related to credit quality)			14,359			55,690			4,179			14,070			709			—			89,007
Total loans ending balance		$	540,740		$	234,264		$	19,412		$	107,750		$	7,304		$	—		$	909,470
The following tables set forth information regarding nonaccrual and past due loans as of December 31, 2014 and December 31, 2013:
(Dollars in thousands)		30-59 Days			60-89 Days			90 Days			Total			Total			Total			90 Days			Nonaccrual
								or More			Past Due			Current						or More			Loans
								Past Due												Past Due
																				and Accruing
December 31, 2014:
Real estate:
Conventional		$	3,546		$	1,399		$	1,432		$	6,377		$	639,313		$	645,690		$	—		$	2,426
Home equity			60			31			181			272			68,931			69,203			—			181
Commercial			2,228			1,472			1,343			5,043			307,974			313,017			—			3,926
Construction			—			28			15			43			36,402			36,445			—			15
Commercial and municipal			305			463			330			1,098			137,477			138,575			—			779
Consumer (including credit card)			71			21			—			92			9,058			9,150			—			—
Total		$	6,210		$	3,414		$	3,301		$	12,925		$	1,199,155		$	1,212,080		$	—		$	7,327
(Dollars in thousands)		30-59 Days			60-89 Days			90 Days			Total			Total			Total			90 Days			Nonaccrual
								or More			Past Due			Current						or More			Loans
								Past Due												Past Due
																				and Accruing
December 31, 2013:
Real estate:
Conventional		$	2,654		$	498		$	2,812		$	5,964		$	596,306		$	602,270		$	—		$	3,821
Commercial			1,859			267			903			3,029			284,784			287,813			—			4,512
Home equity			53			57			52			162			70,402			70,564			—			104
Construction			95			—			—			95			29,627			29,722			—			230
Commercial and municipal			133			10			159			302			139,769			140,071			—			621
Consumer			29			60			15			104			9,713			9,817			—			15
Total		$	4,823		$	892		$	3,941		$	9,656		$	1,130,601		$	1,140,257		$	—		$	9,303
As of December 31, 2014, the Company’s impaired loans consist of certain loans, including all TDRs. The following tables summarizes, by class of loan, information related to impaired loans as of December 31, 2014 and December 31, 2013:
(Dollars in thousands)		Recorded			Unpaid			Related			Average			Interest
		Investment			Principal			Allowance			Recorded			Income
					Balance						Investment			Recognized
December 31, 2014:
With no related allowance recorded:
Real estate:
Conventional		$	5,447		$	6,028		$	—		$	5,735		$	342
Home equity			181			264			—			232			5
Commercial			7,383			8,151			—			8,093			379
Construction			1,163			1,185			—			1,233			53
Commercial and municipal			880			1,204			—			1,118			77
Total impaired with no related allowance		$	15,054		$	16,832		$	—		$	16,411		$	856
With an allowance recorded:
Real estate:
Conventional		$	337		$	370		$	50		$	546		$	17
Commercial			727			727			17			1,539			32
Commercial and municipal			—			—			—			350			—
Total impaired with an allowance recorded		$	1,064		$	1,097		$	67		$	2,435		$	49
Total
Real estate:
Conventional		$	5,784		$	6,398		$	50		$	6,281		$	359
Home equity			181			264			—			232			5
Commercial			8,110			8,878			17			9,632			411
Construction			1,163			1,185			—			1,233			53
Commercial and municipal			880			1,204			—			1,468			77
Total impaired loans		$	16,118		$	17,929		$	67		$	18,846		$	905
(Dollars in thousands)		Recorded			Unpaid			Related			Average			Interest
		Investment			Principal			Allowance			Recorded			Income
					Balance						Investment			Recognized
December 31, 2013:
With no related allowance recorded:
Real estate:
Conventional		$	6,084		$	7,029		$	—		$	5,387		$	261
Home equity			153			312			—			104			9
Commercial			9,807			10,432			—			10,832			534
Construction			1,494			1,515			—			1,749			69
Commercial and municipal			1,099			1,141			—			728			65
Total impaired with no related allowance		$	18,637		$	20,429		$	—		$	18,800		$	938
With an allowance recorded:
Real estate:
Conventional		$	479		$	512		$	71		$	618		$	23
Home equity			—			—			—			—			—
Commercial			1,556			1,556			116			1,622			105
Construction			—			—			—			—			—
Commercial and municipal			483			483			10			527			24
Total impaired with an allowance recorded		$	2,518		$	2,551		$	197		$	2,767		$	152
Total
Real estate:
Conventional		$	6,563		$	7,541		$	71		$	6,005		$	284
Home equity			153			312			—			104			9
Commercial			11,363			11,988			116			12,454			639
Construction			1,494			1,515			—			1,749			69
Commercial and municipal			1,582			1,624			10			1,255			89
Total impaired loans		$	21,155		$	22,980		$	197		$	21,567		$	1,090
The following table presents a summary of credit impaired loans acquired through the merger with Central Financial Corporation as of the dates indicated:
December 31, 2014
(Dollars in thousands)		Commercial			Conventional
		Real Estate and			Real Estate
		Commercial
		and Municipal
Contractually required payments receivable		$	983		$	800
Nonaccretable difference			—			—
Cash flows expected to be collected			983			800
Accretable yield			—			—
Fair value of purchased credit impaired loans acquired		$	983		$	800
December 31, 2013
(Dollars in thousands)		Commercial			Conventional
		Real Estate and			Real Estate
		Commercial
		and Municipal
Contractually required payments receivable		$	1,604		$	984
Nonaccretable difference			—			—
Cash flows expected to be collected			1,604			984
Accretable yield			—			—
Fair value of purchased credit impaired loans acquired		$	1,604		$	984
The following table presents a summary of credit impaired loans acquired through the merger with The Nashua Bank as of the dates indicated:
December 31, 2014
(Dollars in thousands)		Commercial
		Real Estate and
		Commercial
		and Municipal
Contractually required payments receivable		$	971
Nonaccretable difference			—
Cash flows expected to be collected			971
Accretable yield			—
Fair value of purchased credit impaired loans acquired		$	971
December 31, 2013
(Dollars in thousands)		Commercial
		Real Estate and
		Commercial
		and Municipal
Contractually required payments receivable		$	1,012
Nonaccretable difference			—
Cash flows expected to be collected			1,012
Accretable yield			—
Fair value of purchased credit impaired loans acquired		$	1,012
The following table presents modified loans by class that were determined to be TDRs that occurred during the years ended December 31:
(Dollars in thousands)		Number of			Pre-Modification			Post-Modification
		Contracts			Outstanding Recorded			Outstanding Recorded
					Investment			Investment
December 31, 2014:
Troubled Debt Restructurings:
Real estate:
Conventional			16		$	1,257		$	1,257
Commercial			4			991			991
Construction			1			95			95
Commercial and municipal			1			35			35
			22		$	2,378		$	2,378
There were no loans modified as TDRs that defaulted during the year ended December 31, 2014.
(Dollars in thousands)		Number of			Pre-Modification			Post-Modification
		Contracts			Outstanding Recorded			Outstanding Recorded
					Investment			Investment
December 31, 2013:
Troubled Debt Restructurings:
Real estate:
Conventional			15		$	2,680		$	2,680
Commercial			5			3,018			3,018
Construction			3			700			700
Commercial and municipal			5			560			560
			28		$	6,958		$	6,958
(Dollars in thousands)		Number of			Recorded Investment
		Contracts
Troubled Debt Restructurings that Subsequently Defaulted:
Conventional			4		$	541
Construction			1			23
			5		$	564
Troubled debt restructured loans and leases are considered impaired and are included in the previous impaired loan disclosures in this footnote. As of December 31, 2014 and 2013, the Company has not committed to lend additional amounts to customers with outstanding loans and leases that are classified as troubled debt restructurings.
During the years ended December 31, 2014 and 2013, certain loans and lease modifications were executed which constituted troubled debt restructurings. Substantially all of these modifications included one or a combination of the following: an extension of the maturity date at a stated rate of interest lower than the current market rate for new debt with similar risk; temporary reduction in the interest rate; or change in scheduled payment amount.
The following tables present information on how loans were modified as TDRs during the years ended December 31:
(Dollars in thousands)		Extended			Combination of			Combination of			Combination of			Other (a)			Total
		Maturity			Payments, Rate			Interest Only			Interest Rate,
					And Maturity			Payments and			Maturity and
								Maturity			Reamortized
December 31, 2014:
Real estate:
Conventional		$	—		$	516		$	619		$	122		$	—		$	1,257
Commercial			211			210			—			—			570			991
Construction			—			—			95			—			—			95
Commercial and municipal			—			—			—			—			35			35
Total TDRs		$	211		$	726		$	714		$	122		$	605		$	2,378
(Dollars in thousands)		Extended			Combination of			Interest Only			Combination of			Other (a)			Total
		Maturity			Payments, Rate			Payments and			Interest Rate,
					And Maturity			Maturity			Maturity and
											Reamortized
December 31, 2013:
Real estate:
Conventional		$	—		$	996		$	1,273		$	219		$	192		$	2,680
Commercial			764			1,143			1,111			—			—			3,018
Construction			700			—			—			—			—			700
Commercial and municipal			—			—			524			—			36			560
Total TDRs		$	1,464		$	2,139		$	2,908		$	219		$	228		$	6,958
(a)	Other includes covenant modifications, forbearance and/or other modifications.
There were no new TDRs that have subsequently defaulted during the year ended December 31, 2014. All TDRs are individually evaluated for impairment. There are three TDRs with an impairment measurement totaling $53 thousand, included in specific allowances as of December 31, 2014.
Two of the TDRs that have subsequently defaulted during the year ended December 31, 2013 are on nonaccrual as of December 31, 2013. All TDRs are individually evaluated for impairment. Of the two defaulted TDRs, one had an impairment measurement totaling $16 thousand, included in specific allowances.
The following tables present the Company’s loans by risk rating as of December 31:
		Real Estate:
(Dollars in thousands)		Conventional and			Commercial			Construction			Commercial and			Consumer			Total
		Home Equity									Municipal
December 31, 2014:
Originated
Grade:
Pass		$	—		$	205,158		$	19,798		$	99,705		$	—		$	324,661
Special mention			—			2,952			35			850			—			3,837
Substandard			4,790			11,944			2,384			359			—			19,477
Loans not formally rated			650,772			15,586			12,771			24,247			7,438			710,814
Total		$	655,562		$	235,640		$	34,988		$	125,161		$	7,438		$	1,058,789
Acquired
Grade:
Pass		$	—		$	64,441		$	924		$	10,676		$	—		$	76,041
Special mention			—			5,600			—			401			—			6,001
Substandard			863			5,693			389			1,811			—			8,756
Loans not formally rated			58,468			1,643			144			526			1,712			62,493
Total		$	59,331		$	77,377		$	1,457		$	13,414		$	1,712		$	153,291
(Dollars in thousands)
December 31, 2013:
Originated
Grade:
Pass		$	—		$	164,554		$	13,337		$	98,469		$	—		$	276,360
Special mention			—			3,885			812			674			—			5,371
Substandard			5,708			12,373			1,880			1,193			—			21,154
Loans not formally rated			594,616			17,929			10,033			20,920			6,829			650,327
Total		$	600,324		$	198,741		$	26,062		$	121,256		$	6,829		$	953,212
Acquired
Grade:
Pass		$	—		$	80,730		$	2,148		$	16,577		$	—		$	99,455
Special mention			—			1,341			—			—			—			1,341
Substandard			1,521			5,518			228			1,876			—			9,143
Loans not formally rated			70,989			1,483			1,284			362			2,988			77,106
Total		$	72,510		$	89,072		$	3,660		$	18,815		$	2,988		$	187,045
Credit Quality Information
The Company utilizes an eight grade internal loan rating system for commercial real estate, construction and commercial loans as follows:
Loans rated 10-35: Loans in these categories are considered “pass” rated loans with low to average risk.
Loans rated 40: Loans in this category are considered “special mention.” These loans are starting to show signs of potential weakness and are being closely monitored by management.
Loans rated 50: Loans in this category are considered “substandard.” Generally, a loan is considered substandard if it is inadequately protected by the current net worth and paying capacity of the obligors and/or the collateral pledged. There is a distinct possibility that the Company will sustain some loss if the weakness is not corrected.
Loans rated 60: Loans in this category are considered “doubtful.” Loans classified as doubtful have all the weaknesses inherent in those classified substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, highly questionable and improbable.
Loans rated 70: Loans in this category are considered uncollectible (“loss”) and of such little value that their continuance as loans is not warranted.
On an annual basis, or more often if needed, the Company formally reviews the ratings on all commercial real estate, construction and commercial loans over $250 thousand. For residential real estate and consumer loans, the Company initially assesses credit quality based upon the borrower’s ability to pay and subsequently monitors these loans based on the borrower’s payment activity.
Loan Servicing Rights
In addition to total loans previously shown, the Company services loans for other financial institutions. Participation loans are loans originated by the Company for a group of banks. Sold loans are loans originated by the Company and sold to the secondary market. The Company services these loans and remits the payments received to the buyer. The Company specifically originates long-term, fixed-rate loans to sell. The amount of loans sold and participated out which are serviced by the Company are as follows as of December 31:
(Dollars in thousands)		2014			2013
Sold loans		$	411,583		$	417,274
Participation loans		$	31,147		$	30,022
The balance of capitalized servicing rights, net of valuation allowances, included in other assets at December 31, 2014 and 2013 was $2.4 million and $2.7 million, respectively.
Servicing rights of $518 thousand, $1.6 million and $1.4 million were capitalized in 2014, 2013 and 2012, respectively. Amortization of capitalized servicing rights was $867 thousand, $1.0 million, and $1.0 million in 2014, 2013, and 2012, respectively.
The fair value of capitalized servicing rights was $4.2 million and $4.1 million as of December 31, 2014 and 2013, respectively. Following is an analysis of the aggregate changes in the valuation allowances for capitalized servicing rights:
(Dollars in thousands)		2014			2013
Balance, beginning of year		$	65		$	69
Additions			4			155
Reductions			(50	)		(159	)
Balance, end of year		$	19		$	65

Premises_and_equipment

Premises and equipment	31 Months Ended
	Dec. 31, 2014
Premises and equipment	NOTE 5. Premises and equipment:
	Premises and equipment are shown on the consolidated balance sheets at cost, net of accumulated depreciation, as follows as of December 31:
	(Dollars in thousands)	2014		2013
	Land and land improvements	$	3,235	$	3,235
	Buildings and premises		26,638		25,653
	Furniture, fixtures and equipment		14,121		12,566
			43,994		41,454
	Less—accumulated depreciation		19,603		17,612
		$	24,391	$	23,842
	Depreciation expense amounted to $2.1 million, $1.5 million and $1.2 million for the years ending December 31, 2014, 2013 and 2012, respectively.

Investment_in_real_estate

Investment in real estate	31 Months Ended
	Dec. 31, 2014
Investment in real estate	NOTE 6. Investment in real estate:
	The balance in investment in real estate consisted of the following as of December 31:
	(Dollars in thousands)	2014		2013
	Land and land improvements	$	412	$	412
	Buildings and premises		4,163		4,163
			4,575		4,575
	Less—accumulated depreciation		1,042		894
		$	3,533	$	3,681
	Rental income from investment in real estate amounted to $308 thousand, $309 thousand and $283 thousand for the years ended December 31, 2014, 2013 and 2012, respectively. Depreciation expense amounted to $148 thousand, $153 thousand and $129 thousand for the years ending December 31, 2014, 2013 and 2012, respectively.

Deposits

Deposits	31 Months Ended
	Dec. 31, 2014
Deposits	NOTE 7. Deposits:
	Deposits are summarized as follows as of December 31:
	(Dollars in thousands)	2014		2013
	Demand deposits	$	117,889	$	101,446
	Savings		233,697		218,100
	N.O.W.		333,984		303,054
	Money market		103,817		104,755
	Time deposits		363,327		360,737
		$	1,152,714	$	1,088,092
	The following is a summary of maturities of time deposits as of December 31, 2014:
	(Dollars in thousands)
	2015	$	235,110
	2016		60,847
	2017		30,789
	2018		20,099
	2019		16,482
	Total	$	363,327
	Interest expense by major category of interest-bearing deposits is summarized as follows for the years ended December 31:
	(Dollars in thousands)	2014		2013		2012
	Time deposits	$	3,635	$	3,283	$	3,762
	N.O.W.		259		248		209
	Money market		314		297		137
	Savings		256		227		273
		$	4,464	$	4,055	$	4,381
	Deposits from related parties held by the Bank as of December 31, 2014 and 2013 amounted to $3.7 million and $3.1 million, respectively.
	As of December 31, 2014 and 2013, time deposits include $144.1 million and $157.0 million, respectively, of certificates of deposit with a minimum balance of $100 thousand. As of December 2014, time deposits include $48.4 million of certificates of deposit with a minimum balance of $250 thousand. Generally, deposits in excess of $250 thousand are not federally insured.
	The aggregate amount of brokered time deposits as of December 31, 2014 and 2013 was $51.1 million and $20.8 million, respectively. Brokered time deposits of $51.1 million are not included in time deposits accounts in denominations of $100 thousand or more, or $250 thousand or more, above.

Federal_Home_Loan_Bank_Advance

Federal Home Loan Bank Advances and Letters of Credit	31 Months Ended
	Dec. 31, 2014
Federal Home Loan Bank Advances and Letters of Credit	NOTE 8. Federal Home Loan Bank Advances and Letters of Credit:
	Advances consist of funds borrowed from the FHLB.
	Maturities of advances from the FHLB for the years ending after December 31, 2014 are summarized as follows:
	(Dollars in thousands)
	2015	$	95,992
	2016		15,000
	2018		30,000
		$	140,992
	As of December 31, 2014, the following advances from the FHLB were redeemable at par at the option of the FHLB (dollars in thousands):
	MATURITY DATE	OPTIONAL REDEMPTION DATE		AMOUNT
	April 30, 2018	January 28, 2015 and quarterly thereafter		$	10,000
	October 24, 2018	24-Oct-15		$	10,000
	October 24, 2018	24-Oct-15		$	10,000
	As of December 31, 2014, the Company had a $1.0 million putable advance (Knock-out Advance) from the FHLB which matures on September 1, 2015, and has a fixed interest rate of 4.13%. The FHLB will require that this borrowing become due immediately upon its Strike Date (next strike date is March 2, 2015 and quarterly thereafter) if the three month LIBOR equals or exceeds the Strike Rate of 6.75%. As of December 31, 2014, the three month LIBOR was at 0.26%.
	At December 31, 2014, the interest rates on FHLB advances ranged from 0.0028% to 4.13%. The weighted average interest rate at December 31, 2014 was 0.90%.
	At December 31, 2014, the Company had $44.2 million of stand-by letters of credit issued by the FHLB to secure customer deposits.
	Borrowings, including letters of credit, from the FHLB are secured by a blanket lien on qualified collateral, consisting primarily of loans with first mortgages secured by one to four family properties, certain unencumbered investment securities and other qualified assets.

Securities_sold_under_agreemen

Securities sold under agreements to repurchase	31 Months Ended
	Dec. 31, 2014
Securities sold under agreements to repurchase	NOTE 9. Securities sold under agreements to repurchase:
	The securities sold under agreements to repurchase as of December 31, 2014 and 2013 are securities sold on a short-term basis by the Bank that have been accounted for not as sales but as borrowings. The securities consisted of debt securities issued by U.S. government agencies. The securities were held in the Bank’s safekeeping account at the Federal Home Loan Bank of Boston under the control of the Bank and pledged to the purchasers of the securities. The purchasers have agreed to sell to the Bank substantially identical securities at the maturity of the agreements.

Income_taxes

Income taxes	31 Months Ended
	Dec. 31, 2014
Income taxes	NOTE 10. Income taxes:
	The components of income tax expense are as follows for the years ended December 31:
	(Dollars in thousands)	2014			2013			2012
	Current tax expense	$	2,410		$	2,535		$	3,205
	Deferred tax expense		1,154			592			479
	Total income tax expense	$	3,564		$	3,127		$	3,684
	The reasons for the differences between the tax at the statutory federal income tax rate and the effective tax rates are summarized as follows for the years ended December 31:
		2014			2013			2012
		% of			% of			% of
		Income			Income			Income
	Federal income tax at statutory rate		34	%		34	%		34
	Increase (decrease) in tax resulting from:
	Tax-exempt income		(5.7	)		(6.8	)		(5.5	)
	Dividends received deduction		(0.1	)		(1.0	)		(1.2	)
	Federal tax credits		(2.4	)		(0.3	)		(0.3	)
	Merger related expenses		—			2.3			2.2
	Other, net		0.4			(1.1	)		3
	Effective tax rates		26.2	%		27.1	%		32.2	%
	The Company had gross deferred tax assets and gross deferred tax liabilities as follows as of December 31:
	(Dollars in thousands)	2014			2013
	Deferred tax assets:
	Interest on non-performing loans	$	216		$	134
	Allowance for loan losses		3,203			3,505
	Deferred compensation		804			1,150
	Deferred retirement expense		1,478			1,330
	Restricted stock awards		37			26
	Accrued directors fees		16			21
	Accrued group health contingency		12			32
	Write-down of securities		—			48
	Net unrealized loss on available-for-sale securities		224			784
	Unrecognized employee benefits under ASC 715-10		1,966			1,113
	Other		275			—
	Gross deferred tax assets		8,231			8,143
	Deferred tax liabilities:
	Deferred loan costs, net of fees		(1,621	)		(1,485	)
	Prepaid pension		(1,662	)		(1,643	)
	Accelerated depreciation		(805	)		(721	)
	Purchased goodwill		(3,729	)		(3,447	)
	Mortgage servicing rights		(864	)		(1,002	)
	Core deposit intangibles and other market value adjustments		(2,313	)		(1,984	)
	Other		(259	)		(168	)
	Gross deferred tax liabilities		(11,253	)		(10,450	)
	Net deferred tax liability	$	(3,022	)	$	(2,307	)
	During 2013, the Company acquired CHC. Upon acquisition, deferred taxes were decreased by $1.3 million due to existing deferred taxes and acquisition accounting adjustments.
	During 2013, the Company acquired Central Financial Corporation. Upon acquisition, deferred taxes were increased by $691 thousand due to existing deferred taxes and acquisition accounting adjustments. Deferred taxes were subsequently increased by $146 thousand in 2014 due to post-acquisition goodwill adjustments.
	During 2012, the Company acquired The Nashua Bank. Upon acquisition, deferred taxes were decreased by $223 thousand due to existing deferred taxes and acquisition accounting adjustments.
	It is the Company’s policy to provide for uncertain tax positions and the related interest and penalties based upon management’s assessment of whether a tax benefit is more likely than not to be sustained upon examination by tax authorities. As of December 31, 2014 and 2013, there were no material uncertain tax positions related to federal and state income tax matters. The Company is currently open to audit under the statute of limitations by the Internal Revenue Service and state taxing authorities for the years ended December 31, 2011 through December 31, 2014.

Stock_compensation_plans

Stock compensation plans	31 Months Ended
	Dec. 31, 2014
Stock compensation plans	NOTE 11. Stock compensation plans:
	During December 31, 2014, the Company had two fixed stock-based employee compensation plans, the 2014 Stock Incentive Plan (the “2014 Plan”) and the 2004 Stock Incentive Plan (the “2004 Plan” and collectively, the “Plans”).
	As of December 31, 2014, 410,000 shares were available to be granted under the 2014 Plan in the form of grants of options or shares of restricted stock. As of December 31, 2014, there were 113,500 options and 44,600 restricted stock non-vested awards outstanding under the 2004 Plan. There are currently no outstanding options under the 2014 Plan.
	Under the 2004 Plan, the exercise price of each option equals the market price of the Company’s stock on the date of grant and an option’s maximum term is 10 years. Options were exercisable immediately upon grant. No modifications have been made to the terms of the option agreements.
	A summary of the options issued pursuant to the Plans as of December 31, 2014, 2013 and 2012 and changes during the years ending on those dates is presented below:
		2014					2013					2012
					Weighted-Average					Weighted-Average					Weighted-Average
		Shares			Exercise Price		Shares			Exercise Price		Shares			Exercise Price
	Outstanding at beginning of year		123,000		$	13.38		245,000		$	13.23		304,042		$	12.66
	Forfeited		(2,500	)		13.25		(18,600	)		13.15		(19,000	)		12.74
	Exercised		(7,000	)		13.25		(103,400	)		13.07		(40,042	)		9.13
	Outstanding at end of year		113,500		$	13.39		123,000		$	13.38		245,000		$	13.23
	Options exercisable at year-end		113,500					123,000					245,000
	Weighted-average fair value of options granted during the year		—					—					—
	The following table summarizes information about fixed stock options outstanding as of December 31, 2014:
	Options Outstanding and Exercisable
		Number			Remaining
	Exercise Price	Outstanding			Contractual Life
	$13.25		106,000			0.9 years
	15.3		7,500			1.1 years
	$13.39		113,500			0.9 years
	The Company granted 15,000 shares of restricted stock to ten directors effective May 1, 2014. The restricted stock was granted under the 2004 Plan and awards directors shares of restricted common stock of the Company. The restricted stock vests ratably over a five year period beginning on April 30, 2015. Compensation expense relating to the restricted stock awards is based on the grant-date fair value of $14.75 per share and amounted to $30 thousand for the year ending December 31, 2014. The remaining unrecognized compensation expense at December 31, 2014 of $192 thousand will be recognized over the next 4.3 years.
	The Company granted 1,500 shares of restricted stock to one director effective May 1, 2014 under the 2004 Plan. The restricted stock was immediately vested on the grant date. Compensation expense relating to the restricted stock awards is based on the grant-date fair value of $14.75 per share and amounted to $22 thousand for the year ending December 31, 2014.
	The Company granted a total of 4,500 shares of restricted stock to a non-executive employee effective March 1, 2013. The restricted stock was granted under the 2004 Plan. The restricted stock vests ratably over a five year period beginning on March 1, 2014. Compensation expense relating to these restricted stock awards is based on the grant-date fair value of $13.50 per share and amounted to $12 thousand for the year ending December 31, 2014 and $10 thousand for the year ending December 31, 2013. The remaining unrecognized compensation expense at December 31, 2014 of $38 thousand will be recognized over the next 3.2 years.
	The Company granted a total of 10,000 shares of restricted stock to the Executive Chairman effective May 1, 2013. The restricted stock was granted under the 2004 Plan. The restricted stock vests ratably over a five year period beginning on May 1, 2014. Compensation expense relating to these restricted stock awards is based on the grant-date fair value of $12.81 per share and amounted to $26 thousand for the year ending December 31, 2014 and $17 thousand for the year ending December 31, 2013. The remaining unrecognized compensation expense at December 31, 2014 of $85 thousand will be recognized over the next 3.3 years.
	The Company granted a total of 35,000 shares of restricted stock to seven directors effective June 14, 2012. The restricted stock was granted under the 2004 Plan and awards directors shares of restricted common stock of the Company. In 2012, 5,000 shares of the awarded restricted stock shares were forfeited, leaving 30,000 shares of restricted stock outstanding at December 31, 2014. The restricted stock vests ratably over a five year period beginning on June 13, 2013. Compensation expense relating to the restricted stock awards is based on the grant-date fair value of $12.56 per share and amounted to $75 thousand for the years ending December 31, 2014 and December 31, 2013, and $38 thousand for the year ending December 31, 2012. The remaining unrecognized compensation expense at December 31, 2014 of $188 thousand will be recognized over the next 2.5 years.

Employee_benefit_plans

Employee benefit plans	31 Months Ended
	Dec. 31, 2014
Employee benefit plans	NOTE 12. Employee benefit plans:
	Defined Benefit Pension Plan
	The Company has a defined benefit pension plan covering substantially all full-time employees who have attained age 21 and have completed one year of service. Annual contributions to the plan are based on actuarial estimates. In December 2006, the Company elected to suspend the plan so that employees no longer earn additional benefits for future service under this plan.
	The following tables set forth information about the plan for the years ended December 31, 2014, 2013 and 2012:
	(Dollars in thousands)		2014			2013			2012
	Change in projected benefit obligation:
	Benefit obligation at beginning of year		$	6,961		$	7,507		$	6,560
	Interest cost			341			332			338
	Actuarial loss (gain)			2,069			(648	)		838
	Benefits paid			(247	)		(220	)		(229	)
	Settlements			(150	)		(10	)		—
	Benefit obligation at end of year			8,974			6,961			7,507
	Change in plan assets:
	Plan assets at estimated fair value at beginning of year			8,186			7,361			6,828
	Actual return on plan assets			390			1,055			756
	Benefits paid			(247	)		(220	)		(229	)
	Settlements			(150	)		(10	)		—
	Contributions			—			—			6
	Fair value of plan assets at end of year			8,179			8,186			7,361
	Funded status		$	(795	)	$	1,225		$	(146	)
	Amounts recognized in accumulated other comprehensive loss, before tax effect, consist of unrecognized net actuarial losses of $5.0 million and $2.8 million as of December 31, 2014 and 2013, respectively.
	The discount rate and rate of increase in future compensation levels used in determining the actuarial present value of the projected benefit obligation were 4.24% and 0%, respectively, at December 31, 2014, 5.00% and 0%, respectively, at December 31, 2013, and 4.50% and 0%, respectively, at December 31, 2012.
	The accumulated benefit obligation for the defined benefit pension plan was $9.0 million and $7.0 million at December 31, 2014 and 2013, respectively.
	Components of net periodic (benefit) cost and other comprehensive loss (income) for the years ended December 31:
	(Dollars in thousands)		2014			2013			2012
	Interest cost on benefit obligation		$	341		$	332		$	338
	Expected return on assets			(646	)		(579	)		(536	)
	Amortization of unrecognized actuarial loss			173			303			258
	Net periodic (benefit) cost			(132	)		56			60
	Other changes in plan assets and benefit obligations recognized as other comprehensive loss (income), before tax effect:
	Actuarial loss (gain)			2,325			(1,124	)		618
	Amortization of unrecognized actuarial loss			(173	)		(303	)		(258	)
	Total recognized as other comprehensive loss (income)			2,152			(1,427	)		360
	Total recognized as net periodic (benefit) cost and other comprehensive loss (income)		$	2,020		$	(1,371	)	$	420
	The estimated net loss that will be amortized from accumulated other comprehensive loss into net periodic pension benefit over the year ended December 31, 2015 is $355 thousand.
	For the years ended December 31, 2014, 2013 and 2012, the assumptions used to determine the net period pension cost are as follows:
			2014			2013			2012
	Discount rate			5	%		4.5	%		5.25	%
	Increase in future compensation levels			—			—			—
	Expected long-term rate of return on plan assets			8			8			8
	The Company has examined the historical benchmarks for returns in each asset class in its portfolio, and based on the target asset mix has developed a weighted-average expected return for the portfolio as a whole, partly taking into consideration forecasts of long-term expected inflation rates of 2.5%. The long-term rate of return used by the Company is 8.0%. This rate was determined by adding the expected inflation rates to the weighted sum of the expected long-term return on each asset allocation.
	Plan Assets
	The Company’s pension plan assets measured at fair value at December 31, 2014, by asset category, are as follows:
			Fair Value Measurements at Reporting Date Using:
	Asset Category		Total			Quoted Prices in			Significant			Significant
						Active Markets for			Other Observable			Unobservable
						Identical Assets			Inputs			Inputs
						Level 1			Level 2			Level 3
	(Dollars in thousands)
	December 31, 2014:
	U.S. equity securities		$	868		$	473		$	395		$	—
	Registered investment companies (a)			7,271			7,271			—			—
	Money market			40			40			—			—
	Totals		$	8,179		$	7,784		$	395		$	—
	(a)	Includes 52% invested in fixed income funds and 48% invested in equity and index funds.
	The Company’s pension plan assets measured at fair value at December 31, 2013, by asset category, are as follows:
			Fair Value Measurements at Reporting Date Using:
	Asset Category		Total			Quoted Prices in			Significant			Significant
						Active Markets for			Other Observable			Unobservable
						Identical Assets			Inputs			Inputs
						Level 1			Level 2			Level 3
	(Dollars in thousands)
	December 31, 2013:
	U.S. equity securities		$	857		$	462		$	395		$	—
Registered investment companies (a)			7,184			7,184			—			—
Money market			145			145			—			—
Totals		$	8,186		$	7,791		$	395		$	—
(a)	Includes 53% invested in fixed income funds and 47% invested in equity and index funds.
The Company’s pension plan assets are generally classified within level 1 or level 2 of the fair value hierarchy (See Note 14, “Fair Value Measurements,” to the Consolidated Financial Statements for a description of the fair value hierarchy) because they are valued using quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency.
Equity securities include 30,294 shares of the Company’s common stock as of December 31, 2014 and 2013. The fair values of the shares on those dates were $473 thousand (5.8% of total plan assets) and $462 thousand (5.6% of total plan assets), respectively.
The investment policy for the defined benefit pension plan sponsored by the Company is based on ERISA standards for prudent investing. The Company seeks maximum return, while limiting risk, through a balanced portfolio of equity and fixed income investments. The investment objectives also include appreciation of principal with a modest requirement for current income. The investment horizon varies with circumstances. Within each asset class, a diversified mix of individual securities and bonds is selected.
To maximize the ability of achieving the Company’s overall goals for the plan’s assets and to provide the required level of income each year, the allocation between common stocks, bonds and cash equivalents shall adhere to the following target allocation based on market value:
		Target Allocation
Equities			38-58	%
Fixed income			42-62	%
The Company does not expect to contribute to the defined benefit pension plan in 2015.
Estimated future benefit payments, which reflect expected future service, as appropriate, are as follows:
(Dollars in thousands)
2015		$	345
2016			346
2017			374
2018			391
2019			412
Years 2020-2024			2,348
Defined Contribution Plan
The Bank sponsors a Profit Sharing—Stock Ownership Plan. The Bank may elect, but is not required, to make discretionary and/or matching contributions to the Plan.
For 2014, 2013 and 2012, participating employees’ contributions totaled $1.0 million, $954 thousand and $812 thousand, respectively. The Bank made contributions totaling $828 thousand for 2014, $802 thousand for 2013 and $652 thousand for 2012. A participant’s retirement benefit will depend on the amount of the contributions to the Plan together with the gains or losses on the investments.
Effective January 1, 2008, the Bank amended the Profit Sharing—Stock Ownership Plan whereby employees will receive a safe harbor, nonelective contribution equal to 3% of compensation for the plan year, as defined in the plan. In addition, the Bank shall make a matching contribution in an amount equal to employees’ elective deferrals up to a percentage of compensation for the plan year, to be determined annually, not to exceed 4%. Finally, the Bank may make an additional profit sharing contribution, determined annually, to be allocated on a pro rata basis to eligible employees based on their compensation in relation to the compensation of all participants.
The Company has entered into salary continuation agreements for supplemental retirement income with certain executives and senior officers. The total liability for these agreements included in other liabilities was $4.8 million and $4.1 million for the years ended December 31, 2014 and 2013, respectively. Expense recorded under these agreements was $939 thousand and $690 thousand in 2014 and 2013, respectively. $166 thousand was paid to retired executives and one active employee in 2014 per the agreements, $219 thousand was paid to retired executives and one active employee in 2013 and $45 thousand was paid to a retired executive in 2012.
Effective as of June 1, 2012, the Company and the Bank entered into an employment agreement (“the Agreement”) with the President and Chief Executive Officer of the Company. The Agreement has an initial term of three years and will automatically extend annually for one year unless either the Company or the President gives contrary written notice in advance. The Agreement provides for a guaranteed minimum salary and certain benefits.
In the event of voluntary termination without cause or voluntary termination with good reason, the executive is entitled to receive a severance benefit equal to a lump sum payment equal to salary and bonus which the executive would have received had he continued to work for the remaining unexpired term; and certain other benefits per the Agreement.
Upon a Change in Control, as defined in the Agreement, the executive will receive the severance benefits described above with such benefits being calculated as if the remaining unexpired term of the agreement was three years.
The Company has a change in control agreement with the Chief Operating Officer in which the officer will receive a lump sum severance payment equal to three year’s annual base salary in effect as of the date of termination.
The Company also has change of control agreements with the Chief Financial Officer and five other officers in which the officer will receive a lump sum severance payment equal to one year’s annual base salary in effect as of the date of termination.
On October 7, 2011, the Bank entered into parallel employment agreements with the Chief Executive Officer and the Chief Financial Officer of MEI. The employment agreements are for a period of three years, and extend automatically for three additional three year renewal periods unless either the Company or the executive give contrary written notice in advance. The employment agreements provide for a guaranteed minimum salary, performance bonus and certain benefits.
The employment agreements also provide for severance benefits upon termination without cause, or following a change in control, in amounts of and/or for the remaining unexpired employment period as defined in the employment agreement.
In 2008, the Company adopted ASC 715, “Compensation—Retirement Benefits,” and recognized a liability for the Company’s future postretirement benefit obligations under endorsement split-dollar life insurance arrangements. The total liability for the arrangements included in other liabilities was $457 thousand at December 31, 2014 and $364 thousand at December 31, 2013. The Company recorded expense under this arrangement of $93 thousand in 2014, $14 thousand in 2013 and $15 thousand in 2012.

Commitments_and_contingencies

Commitments and contingencies	31 Months Ended
	Dec. 31, 2014
Commitments and contingencies	NOTE 13. Commitments and contingencies:
	In the normal course of business, the Company has outstanding various commitments and contingent liabilities, such as legal claims, which are not reflected in the consolidated financial statements. Management does not anticipate any material loss as a result of these transactions.
	As of December 31, 2014, the Company was obligated under non-cancelable operating leases for bank premises and equipment expiring between March 31, 2015 and July 31, 2024. The total minimum rent commitments due in future periods under these existing agreements are as follows as of December 31, 2014:
	(Dollars in thousands)
	2015	$	655
	2016		562
	2017		463
	2018		403
	2019		341
	Thereafter		590
	Total minimum lease payments	$	3,014
	Certain leases contain provisions for escalation of minimum lease payments contingent upon increases in real estate taxes and percentage increases in the consumer price index. The total rental expense amounted to $758 thousand, $603 thousand and $506 thousand for the years ended December 31, 2014, 2013 and 2012, respectively.

Fair_value_measurements

Fair value measurements	31 Months Ended
	Dec. 31, 2014
Fair value measurements	NOTE 14. Fair value measurements:
	ASC 820-10, “Fair Value Measurement—Overall,” provides a framework for measuring fair value under generally accepted accounting principles. This guidance also allows an entity the irrevocable option to elect fair value for the initial and subsequent measurement for certain financial assets and liabilities on a contract-by-contract basis.
	In accordance with ASC 820-10, the Company groups its financial assets and financial liabilities measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value.
	Level 1—Valuations for assets and liabilities traded in active exchange markets, such as the New York Stock Exchange. Level 1 also includes U.S. Treasury, other U.S. Government and agency mortgage-backed securities that are traded by dealers or brokers in active markets. Valuations are obtained from readily available pricing sources for market transactions involving identical assets or liabilities.
	Level 2—Valuations for assets and liabilities traded in less active dealer or broker markets. Valuations are obtained from third party pricing services for identical or comparable assets or liabilities.
	Level 3—Valuations for assets and liabilities that are derived from other methodologies, including option pricing models, discounted cash flow models and similar techniques, are not based on market exchange, dealer, or broker traded transactions. Level 3 valuations incorporate certain assumptions and projections in determining the fair value assigned to such assets and liabilities.
	A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.
	A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. These valuation methodologies were applied to all of the Company’s financial assets and financial liabilities carried at fair value for December 31, 2014 and 2013. The Company did not have any significant transfers of assets between level 1 and level 2 of the fair value hierarchy during the year ended December 31, 2014.
	The Company’s investments in marketable equity securities are generally classified within level 1 or level 2 of the fair value hierarchy because they are valued using quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency.
	The Company’s investment in mortgage-backed securities, asset-backed securities, and other debt securities available-for-sale are generally classified within level 2 of the fair value hierarchy. For these securities, the Company obtains fair value measurements from independent pricing services. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. treasury yield curve, trading levels, market consensus prepayment speeds, credit information and the instrument’s terms and conditions.
	The Company’s derivative financial instruments are generally classified within level 2 of the fair value hierarchy. For these financial instruments, the Company obtains fair value measurements from independent pricing services. The fair value measurements utilize a discounted cash flow model that incorporates and considers observable data that may include publicly available third party market quotes in developing the curve utilized for discounting future cash flows.
	Level 3 is for positions that are not traded in active markets or are subject to transfer restrictions, valuations are adjusted to reflect illiquidity and/or non-transferability, and such adjustments are generally based on available market evidence. In the absence of such evidence, management’s best estimate is used. Subsequent to inception, management only changes level 3 inputs and assumptions when corroborated by evidence such as transactions in similar instruments, completed or pending third-party transactions in the underlying investment or comparable entities, subsequent rounds of financing, recapitalization and other transactions across the capital structure, offerings in the equity or debt markets, and changes in financial ratios or cash flows.
	The Company’s impaired loans are reported at the fair value of the underlying collateral if repayment is expected solely from the collateral. Collateral values are estimated using level 2 inputs based upon appraisals of similar properties obtained from a third party. For level 3 inputs, fair value is based upon management estimates of the value of the underlying collateral or the present value of the expected cash flows.
	Other real estate owned values are estimated using level 2 inputs based upon appraisals of similar properties obtained from a third party. For level 3 inputs, fair values are based on management estimates.
	The following summarizes assets measured at fair value on a recurring basis as of December 31, 2014 and 2013.
		Fair Value Measurements at Reporting Date Using:
	(Dollars in thousands)	Total		Quoted Prices in		Significant		Significant
				Active Markets for		Other Observable		Unobservable
				Identical Assets		Inputs		Inputs
				Level 1		Level 2		Level 3
	December 31, 2014:
	U.S. Treasury notes	$	40,123	$	—	$	40,123	$	—
	Government-sponsored enterprise bonds		7,265		—		7,265		—
	Mortgage-backed securities		58,280		—		58,280		—
	Municipal bonds		9,596		—		9,596		—
	Other bonds and debentures		126		—		126		—
	Equity securities		308		308		—		—
	Totals	$	115,698	$	308	$	115,390	$	—
	December 31, 2013:
	U.S. Treasury notes	$	50,016	$	—	$	50,016	$	—
	Government-sponsored enterprise bonds		7,160		—		7,160		—
	Mortgage-backed securities		46,647		—		46,647		—
	Municipal bonds		20,106		—		20,106		—
	Other bonds and debentures		275		—		275		—
	Equity securities		1,034		1,034		—		—
	Totals	$	125,238	$	1,034	$	124,204	$	—
	The following table presents the assets carried on the consolidated balance sheet by caption and by level in the fair value hierarchy at December 31, 2014 and 2013 for which a nonrecurring change in fair value has been recorded:
		Fair Value Measurements at Reporting Date Using:
	(Dollars in thousands)	Total		Quoted Prices in		Significant		Significant
				Active Markets for		Other Observable		Unobservable
				Identical Assets		Inputs		Inputs
				Level 1		Level 2		Level 3
	December 31, 2014:
	Impaired loans	$	997	$	—	$	—	$	997
	Other real estate owned		251		—		—		251
	Totals	$	1,248	$	—	$	—	$	1,248
	December 31, 2013:
	Impaired loans	$	2,321	$	—	$	—	$	2,321
	Other real estate owned		1,343		—		—		1,343
	Totals	$	3,664	$	—	$	—	$	3,664
	The estimated fair values of the Company’s financial instruments, all of which are held or issued for purposes other than trading, were as follows as of December 31:
		December 31, 2014
		Carrying		Fair Value
	(Dollars in thousands)	Amount		Level 1		Level 2		Level 3		Total
	Financial assets:
	Cash and cash equivalents	$	51,120	$	51,120	$	—	$	—	$	51,120
	Interest-bearing time deposits with other banks		747		—		747		—		747
	Securities available-for-sale		115,698		308		115,390		—		115,698
	Federal Home Loan Bank stock		10,762		10,762		—		—		10,762
	Loans held-for-sale		2,000		—		2,029		—		2,029
	Loans, net		1,206,845		—		—		1,205,578		1,205,578
	Investment in unconsolidated subsidiaries		620		—		—		400		400
	Accrued interest receivable		2,576		2,576		—		—		2,576
	Financial liabilities:
Deposits		1,152,714		—		1,154,466		—		1,154,466
FHLB advances		140,992		—		141,746		—		141,746
Securities sold under agreements to repurchase		16,756		16,756		—		—		16,756
Subordinated debentures		37,620		—		—		29,909		29,909
	31-Dec-13
	Carrying		Fair Value
(Dollars in thousands)	Amount		Level 1		Level 2		Level 3		Total
Financial assets:
Cash and cash equivalents	$	33,578	$	33,578	$	—	$	—	$	33,578
Interest-bearing time deposits with other banks		1,743		—		1,743		—		1,743
Securities available-for-sale		125,238		1,034		124,204		—		125,238
Federal Home Loan Bank stock		9,760		9,760		—		—		9,760
Loans held-for-sale		680		—		683		—		683
Loans, net		1,134,110		—		—		1,136,761		1,136,761
Investment in unconsolidated subsidiaries		620		—		—		587		587
Accrued interest receivable		2,628		2,628		—		—		2,628
Financial liabilities:
Deposits		1,088,092		—		1,091,419		—		1,091,419
FHLB advances		121,734		—		123,166		—		123,166
Securities sold under agreements to repurchase		27,885		27,885		—		—		27,885
Subordinated debentures		20,620		—		—		19,519		19,519
The carrying amounts of financial instruments shown in the above table are included in the consolidated balance sheets under the indicated captions, except for investment in unconsolidated subsidiaries, which is included in other assets. Accounting policies related to financial instruments are described in Note 1.

Acquisitions

Acquisitions	31 Months Ended
	Dec. 31, 2014
Acquisitions	NOTE 15. Acquisitions:
	On September 4, 2013, the Bank acquired the remaining 50% of CHC that was not previously owned by the Company for $6.2 million in cash. The Bank was one of the six original owners of CHC and now, as a result of this acquisition, is the sole owner of CHC and its subsidiaries. Goodwill recognized amounted to $4.6 million and of that total, none is deductible for tax purposes. A remeasurement gain of $1.4 million was recorded in noninterest income based on the fair value of the Company’s equity interest in CHC immediately before the business combination. The acquisition date fair value of the Company’s equity interest in CHC was based on independent third party valuations of CHC as a whole obtained by the buyer and the seller and the agreed-upon arm’s length purchase price of fifty percent of CHC from another financial institution. The agreed-upon purchase price of $6.2 million was based on the third party valuations. The carrying value of the equity investment prior to acquisition was $4.8 million resulting in the remeasurement gain of $1.4 million to reflect the value of $6.2 million for 50% ownership at acquisition.
	CTC, a subsidiary of CHC, was formed in 1984 as a New Hampshire-chartered non-depository trust company and is regulated by the State of New Hampshire Banking Department. Headquartered in Concord, New Hampshire, CTC also has offices in New London, Meredith, Peterborough, Hanover and Rochester. CTC’s team of professional wealth advisors and investment managers work confidentially with individuals and families to create, manage and preserve wealth. Managing over $1.5 billion in client assets, CTC acts as fiduciaries for clients in 43 states and 10 countries. For the Bank, full ownership of CTC marks an important milestone in the Bank’s plan to provide a fully comprehensive one-stop financial services company. As part of this plan, the Bank also acquired a New Hampshire-based independent insurance agency, MEI, in 2011. With these strategic acquisitions, the Bank can now offer financial leadership, products and services to customers at any stage of life.
	On October 25, 2013, the Company acquired a 100% ownership interest in Central Financial Corporation. Costs to acquire consisted of 1,087,416 shares issued with a market value of $14.70 per share for a total acquisition cost of $16 million. Goodwill recognized amounted to $4.6 million and of that total, none is deductible for tax purposes. The Company acquired Central Financial Corporation to solidify its presence in Vermont, doubling the number of banking offices with the single acquisition to serve present and future customers.
	A summary of the fair values of assets acquired and liabilities assumed at the date of the acquisitions is as follows:
		Central Financial		Charter Holding
	(Dollars in thousands)	Corporation		Corporation
	Cash and due from banks	$	17,512	$	3,095
	Interest-bearing time deposits with other banks		1,992
	Federal Home Loan Bank stock		467		—
	Securities available-for-sale		6,494		633
	Loans, net		127,721		—
	Other real estate owned		1,477		—
	Premises and equipment		2,532		1,365
	Other assets and accrued interest receivable		1,669		1,411
	Total assets acquired		159,864		6,504
	Total deposits		149,684		—
	Securities sold under agreements to repurchase		2,602		—
	Accrued expenses and other liabilities		791		2,706
	Total liabilities assumed		153,077		2,706
	Net assets acquired		6,787		3,798
	Goodwill		4,630		4,566
	Core deposit intangible asset		4,568		—
	Customer list intangible asset		—		4,036
	Total purchase price	$	15,985	$	12,400
	On December 21, 2012, the Company acquired The Nashua Bank. Costs to acquire consisted of cash of $3.7 million, 1,153,544 shares issued ($12.76 market value per share, or $14.7 million) and preferred stock assumed of $3.0 million for a total acquisition cost of $21.4 million. Goodwill recognized amounted to $6.7 million and of that total, none is deductible for tax purposes.
	A summary of the fair values of assets acquired and liabilities assumed at the date of the acquisition is as follows:
	(Dollars in thousands)	The Nashua Bank
	Cash and due from banks	$	2,790
	Federal Home Loan Bank stock		383
	Securities available-for-sale		20,852
	Loans, net		88,203
	Premises and equipment		729
	Investment in real estate		249
	Other assets and accrued interest receivable		470
	Total assets acquired		113,676
	Total deposits		98,479
	FHLB advances		1,754
	Accrued expenses and other liabilities		897
	Total liabilities assumed		101,130
	Net assets acquired		12,546
	Goodwill		6,746
	Core deposit intangible asset		2,086
	Total purchase price	$	21,378
	The results of operations of the acquired entities have been included in the Company’s consolidated financial statements since the respective acquisition dates.
	The following pro forma information assumes that the acquisitions had occurred at the beginning of each of the periods presented.
	(Dollars in thousands, except per share data)	2013		2012
	Total revenue	$	65,880	$	67,299
	Net income	$	10,219	$	9,345
	Net income available to common shareholders	$	9,903	$	8,649
	Earnings per share:
	Basic	$	1.21	$	1.05
	Diluted	$	1.21	$	1.05
	The pro forma information is presented for information purposes only and is not necessarily indicative of the results of operations that actually would have been achieved had the acquisition been consummated as of that time, nor is it intended to be a projection of future results.

Stockholders_equity

Stockholders' equity	31 Months Ended
	Dec. 31, 2014
Stockholders' equity	NOTE 16. Stockholders’ equity:
	Liquidation account—On May 22, 1986, the Lake Sunapee Bank, FSB received approval from the FHLB and converted from a federally chartered mutual savings bank to a federally chartered stock savings bank. At the time of conversion, the Bank established a liquidation account in an amount of $4.3 million (equal to the Bank’s net worth as of the date of the latest financial statement included in the final offering circular used in connection with the conversion). The liquidation account will be maintained for the benefit of eligible account holders who maintain their deposit accounts in the Bank after conversion. In the event of a complete liquidation of the Bank subsequent to conversion (and only in such event), each eligible account holder will be entitled to receive a liquidation distribution from the liquidation account before any liquidation distribution may be made with respect to capital stock. The amount of the liquidation account is reduced to the extent that the balances of eligible deposit accounts are reduced on any year-end closing date subsequent to the conversion. Company management believes the balance in the liquidation account would be immaterial to the consolidated financial statements as of December 31, 2014.
	Dividends—The Bank may not declare or pay a cash dividend on or purchase any of its stock if the effect would be to reduce the net worth of the Bank below either the amount of the liquidation account or the net worth requirements of the banking regulators.
	Special bad debts deduction—In prior years, the Bank was allowed a special tax-basis bad debt deduction under certain provisions of the Internal Revenue Code. As a result, retained income of the Bank, as of December 31, 2014, includes $2.1 million for which federal and state income taxes have not been provided. If the Bank no longer qualifies as a bank as defined in certain provisions of the Internal Revenue Code, this amount will be subject to recapture in taxable income ratably over four (4) years, subject to a combined federal and state tax rate of approximately 40%.

Earnings_per_share_EPS

Earnings per share (EPS)	31 Months Ended
	Dec. 31, 2014
Earnings per share (EPS)	NOTE 17. Earnings per share (EPS):
	Reconciliation of the numerators and the denominators of the basic and diluted per share computations for net income are as follows:
		Income			Shares		Per-Share
	(Dollars in thousands, except for per share data):	(Numerator)			(Denominator)		Amount
	Year ended December 31, 2014
	Basic EPS
	Net income as reported	$	10,040
	Preferred stock dividend earned		(230	)
	Net income available to common stockholders		9,810			8,235,213	$	1.19
	Effect of dilutive securities, options		—			11,315
	Diluted EPS
	Income available to common stockholders and assumed conversions	$	9,810			8,246,528	$	1.19
	Year ended December 31, 2013
	Basic EPS
	Net income as reported	$	8,414
	Preferred stock dividend earned		(316	)
	Net income available to common stockholders		8,098			7,294,916	$	1.11
	Effect of dilutive securities, options		—			6,945
	Diluted EPS
	Income available to common stockholders and assumed conversions	$	8,098			7,301,861	$	1.11
	Year ended December 31, 2012
	Basic EPS
	Net income as reported	$	7,759
	Preferred stock dividend earned		(666	)
	Net income available to common stockholders		7,093			5,907,113	$	1.2
	Effect of dilutive securities, options		—			4,938
	Diluted EPS
	Income available to common stockholders and assumed conversions	$	7,093			5,912,051	$	1.2

Other_comprehensive_loss_incom

Other comprehensive (loss) income	31 Months Ended
	Dec. 31, 2014
Other comprehensive (loss) income	NOTE 18. Other comprehensive (loss) income:
	Accounting principles generally require that recognized revenue, expenses, gains and losses be included in net income. Although certain changes in assets and liabilities are reported as a separate component of the equity section of the consolidated balance sheets, such items, along with net income, are components of comprehensive income.
	The components of other comprehensive loss included in stockholders’ equity are as follows during the years ended December 31:
	(Dollars in thousands)	2014			2013			2012
	Net unrealized holding gains (losses) on available-for-sale securities	$	2,367		$	(2,979	)	$	2,942
	Reclassification adjustment for realized gains in net income		(950	)		(964	)		(3,819	)
	Other comprehensive income (loss) before income tax effect		1,417			(3,943	)		(877	)
	Income tax (expense) benefit		(560	)		1,561			347
			857			(2,382	)		(530	)
	Other comprehensive (loss) income—pension plan (See Note 12)		(2,152	)		1,427			(360	)
	Income tax benefit (expense)		853			(567	)		143
			(1,299	)		860			(217	)
	Change in fair value of derivatives used for cash flow hedges		—			166			302
	Income tax expense		—			(65	)		(120	)
			—			101			182
	Other comprehensive income—equity investment		—			12			8
	Reclassification adjustment for realized gains in net income		—			(44	)		—
	Other comprehensive (loss) income before income tax effect		—			(32	)		8
	Income tax benefit (expense)		—			—			—
			—			(32	)		8
	Other comprehensive loss, net of tax effect	$	(442	)	$	(1,453	)	$	(557	)
	Accumulated other comprehensive loss consists of the following as of December 31:
	(Dollars in thousands)	2014			2013			2012
	Net unrealized holding (losses) gains on available-for-sale securities, net of taxes	$	(341	)	$	(1,198	)	$	1,184
	Unrecognized net actuarial loss, defined benefit pension plan, net of tax		(2,998	)		(1,699	)		(2,559	)
	Unrecognized net loss, derivative, net of tax		—			—			(101	)
	Unrecognized net income, equity investment, net of tax		—			—			32
	Accumulated other comprehensive loss	$	(3,339	)	$	(2,897	)	$	(1,444	)
	Realized gains and losses on securities are identified on the consolidated statements of income as net gain on sales and calls of securities. Gains from the former equity investment in CHC were reported on the consolidated statements of income within remeasurement gain of equity interest in CHC. The tax effect of these realized gains and losses, if any, are included in provision for income taxes, and the after tax amount is included in the net income.

Regulatory_matters

Regulatory matters	31 Months Ended
	Dec. 31, 2014
Regulatory matters	NOTE 19. Regulatory matters:
	The Bank is subject to various capital requirements administered by its primary federal regulator, the Office of the Comptroller of the Currency. Failure to meet minimum regulatory 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 the regulatory capital adequacy guidelines and the regulatory framework for prompt corrective action, the Bank must meet specific capital guidelines involving quantitative measures of the Bank’s assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The Bank’s capital amounts and classifications under the prompt corrective action guidelines are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.
	Quantitative measures established by regulation to ensure capital adequacy require the Bank to maintain minimum amounts and ratios (set forth in the table below) of Total and Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined), and of Tier 1 capital (as defined) to total assets (as defined). Management believes, as of December 31, 2014 and 2013, that the Bank meets all capital adequacy requirements to which it is subject.
	As of December 31, 2014, the most recent notification from the Office of the Comptroller of the Currency categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, the Bank must maintain minimum total risk-based, Tier 1 risk-based and Tier 1 leverage ratios as set forth in the table. There are no conditions or events since that notification that management believes have changed the Bank’s category.
														To Be Well
														Capitalized Under
								For Capital						Prompt Corrective
		Actual						Adequacy Purposes						Action Provisions
	(Dollars in thousands)	Amount			Ratio			Amount			Ratio			Amount		Ratio
	As of December 31, 2014:
	Total Capital to Risk Weighted Assets	$	131,597			13.28	%	$	79,283			8	%	$	99,103		10	%
	Tier 1 Capital to Risk Weighted Assets		122,161			12.33			39,641			4			59,462		6
	Tier 1 Capital to Total Assets		122,161			8.43			57,937			4			72,421		5
	As of December 31, 2013:
	Total Capital to Risk Weighted Assets	$	123,556			12.89	%	$	74,876			8	%	$	94,044		10	%
	Tier 1 Capital to Risk Weighted Assets		113,382			11.83			38,337			4			57,506		6
	Tier 1 Capital to Total Assets		113,382			8.29			54,688			4			68,360		5
	The following is a reconcilement of the Bank’s total equity, included in the consolidated balance sheet, to the regulatory capital ratios disclosed in the table above:
		December 31, 2014						December 31, 2013
		Tier 1			Total			Tier 1			Total
	(Dollars in thousands)	Capital			Capital			Capital			Capital
	Total stockholders’ equity	$	172,730		$	172,730		$	166,183		$	166,182
	Accumulated other comprehensive loss		3,339			3,339			2,851			2,982
	Allowable allowance for loan losses		—			9,436			—			10,043
	Goodwill and intangible assets		(53,908	)		(53,908	)		(55,652	)		(55,652	)
	Totals	$	122,161		$	131,597		$	113,382		$	123,555
	On July 2, 2013, the Federal Reserve Bank (FRB) approved the final rules implementing the Basel Committee on Banking Supervision’s capital guidelines for U.S. banks. On July 9, 2013, the FDIC also approved, as an interim final rule, the regulatory capital requirements for U.S. banks, following the actions of the FRB. On April 8, 2014, the FDIC adopted as final its interim final rule, which is identical in substance to the final rules issued by the FRB in July 2013. Under the final rules, minimum requirements will increase for both the quantity and quality of capital held by the Bank. The rules include a new common equity Tier 1 capital risk-weighted assets minimum ratio of 4.5%, raise the minimum ratio of Tier 1 capital to risk-weighted assets from 4.0% to 6.0%, require a minimum ratio of Total capital to risk-weighted assets of 8.0%, and require a minimum Tier 1 leverage ratio of 4.0%. A new capital conservation buffer, comprised of common equity Tier 1 capital, is also established above the regulatory minimum capital requirements. This capital conservation buffer will be phased in beginning January 1, 2016 at 0.625% of risk-weighted assets and increase each subsequent year by an additional 0.625% until reaching its final level of 2.5% on January 1, 2019. Strict eligibility criteria for regulatory capital instruments were also implemented under the final rules.
	The phase-in period for the final rules will begin for the Bank on January 1, 2015, with full compliance with all of the final rule’s requirements phased in over a multi-year schedule and should be fully phased-in by January 1, 2019. Management believes that the Bank’s capital levels will remain characterized as “well-capitalized” under the new rules.

Preferred_stock

Preferred stock	31 Months Ended
	Dec. 31, 2014
Preferred stock	NOTE 20. Preferred stock:
	On January 16, 2009, as part of the Capital Purchase Program, the Company entered into a Letter Agreement with the Treasury pursuant to which the Company issued and sold to the Treasury 10,000 shares of the Company’s Fixed-Rate Cumulative Perpetual Preferred Stock, Series A, par value $0.01 per preferred share, having a liquidation preference of $1,000 per preferred share (the “Series A Preferred Stock”) and a ten-year warrant to purchase up to 184,275 shares of the Company’s common stock, par value $0.01 per common share (the “Common Stock”), at an initial exercise price of $8.14 per common share (the “Warrant”), for an aggregate purchase price of $10.0 million in cash. All of the proceeds from the sale of the Series A Preferred Stock were treated as Tier 1 capital for regulatory purposes. The Warrant was immediately exercisable. On August 25, 2011, the Company redeemed 10,000 shares of the Series A Preferred Stock for $10.0 million. The Warrant was repurchased in its entirety by the Company on February 15, 2012.
	On August 25, 2011, as part of the Small Business Lending Fund (“SBLF”), the Company entered into a Purchase Agreement with the U.S. Department of the Treasury (“Treasury”) pursuant to which the Company issued and sold to the Treasury 20,000 shares of the Company’s Non-Cumulative Perpetual Preferred Stock, Series B, par value $0.01 per preferred share, having a liquidation preference of $1,000 per preferred share (the “Series B Preferred Stock”). The SBLF is the Treasury’s effort to bring Main Street banks and small businesses together to help create jobs and promote economic growth in local communities. The Company used $10.0 million of the SBLF proceeds to repurchase the Series A Preferred Stock issued under the Treasury’s Capital Purchase Program as indicated in the preceding paragraph.
	As part of the acquisition of The Nashua Bank, on December 21, 2012, the Company assumed The Nashua Bank’s outstanding 3,000 shares of Senior Non-Cumulative Perpetual Preferred Stock, Series A (the “TNB Preferred Stock”) issued to Treasury under the SBLF program.
	The Company’s initial dividend rate payable on SBLF capital is, at most, five percent, and the dividend rate falls to one percent if a bank’s small business lending increases by ten percent or more. Banks that increase their lending by less than ten percent but more than 2.5 percent pay rates between two percent and four percent. If a bank’s lending does not increase in the first two years, however, the rate increases to seven percent, and after 4.5 years total, the rate increases to nine percent regardless of the amount of small business lending activities. The dividend will be paid only when declared by the Company’s Board of Directors. The Series B Preferred Stock has no maturity date and ranks senior to the Common Stock with respect to the payment of dividends and distributions and amounts payable upon liquidation, dissolution and winding up of the Company. The Series B Preferred Stock generally is non-voting, other than class voting on certain matters that could adversely affect the Series B Preferred Stock.
	The Company was a participant in the TARP Capital Purchase Program and did not redeem, or apply to redeem, the TARP investment on or prior to December 16, 2010, therefore, if at the beginning of the tenth full calendar quarter after the investment date the amount of Qualified Small Business Lending has not increased over the Baseline Amount (as defined in the Purchase Agreement), then at the beginning of the fifth anniversary of the TARP Capital Purchase Program, or January 16, 2014, and at the beginning of each full calendar quarter thereafter, the Company shall pay the Treasury a lending incentive fee equal to 2% per annum of the aggregate liquidation preference of the then-outstanding SBLF Preferred Stock. This lending incentive fee terminates 4.5 years after the investment date.
	The SBLF Preferred Stock may be redeemed at any time by the Company, subject to the approval of its federal banking regulator. The redemption price is the aggregate liquidation preference of the SBLF Preferred Stock plus accrued but unpaid dividends and pro rata portion of any lending incentive fee. All redemptions must be in an amount at least equal to 25% of the number of originally issued shares of SBLF Preferred Stock, or 100% of the then-outstanding shares if less than 25% of the number of shares originally issued.
	On December 29, 2014, the Company redeemed $15.0 million of the outstanding preferred securities issued under the U.S. Treasury’s SBLF program. The redemption was funded with the proceeds of the $17.0 million private placement of subordinated notes, which the Company completed in October 2014, as described in Note 2. At December 31, 2014, $8.0 million of preferred securities are outstanding under the SBLF program. The Company anticipates redeeming the preferred securities on or before first quarter 2016 when the dividend on such securities is scheduled to increase from 1% to 9%.

Financial_instruments

Financial instruments	31 Months Ended
	Dec. 31, 2014
Financial instruments	NOTE 21. Financial instruments:
	The Company is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to originate loans, standby letters of credit and unadvanced funds on loans. The instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the balance sheets. The contract amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments.
	The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for loan commitments and standby letters of credit is represented by the contractual amounts of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments.
	Commitments to originate loans are agreements to lend to a customer provided there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the borrower. Collateral held varies, but may include secured interests in mortgages, accounts receivable, inventory, property, plant and equipment and income-producing properties.
	Standby letters of credit are conditional commitments issued by the Company to guarantee the performance by a customer to a third party. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. As of December 31, 2014 and 2013, the maximum potential amount of the Company’s obligation was $1.1 million for financial and standby letters of credit. The Company’s outstanding letters of credit generally have a term of less than one year. If a letter of credit is drawn upon, the Company may seek recourse through the customer’s underlying line of credit. If the customer’s line of credit is also in default, the Company may take possession of the collateral, if any, securing the line of credit.
	Notional amounts of financial liabilities with off-balance sheet credit risk are as follows as of December 31:
	(Dollars in thousands)	2014		2013
	Commitments to extend credit	$	25,503	$	20,793
	Letters of credit	$	1,146	$	1,065
	Lines of credit	$	119,901	$	122,031
	Unadvanced portion of construction loans	$	12,560	$	23,320

Goodwill_and_intangible_assets

Goodwill and intangible assets	31 Months Ended
	Dec. 31, 2014
Goodwill and intangible assets	NOTE 22. Goodwill and intangible assets:
	The following table represents the Company’s goodwill and intangible assets by related acquisition at December 31, 2014:
	(Dollars in thousands)	Goodwill		Intangible		Goodwill and
				Assets		Intangible
						Assets
	Landmark Bank	$	2,472	$	—	$	2,472
	New London Trust		9,668		—		9,668
	First Brandon		7,503		191		7,694
	First Community		7,651		95		7,746
	McCrillis & Eldredge		1,356		398		1,754
	The Nashua Bank		6,786		1,366		8,152
	Charter Holding Corporation		4,760		3,374		8,134
	Central Financial Corporation		4,380		3,908		8,288
	Total	$	44,576	$	9,332	$	53,908
	The Company evaluated its goodwill and intangible assets as of December 31, 2014 and 2013 and found no impairment.
	A summary of acquired amortizing intangible assets is as follows:
		Gross				Net
		Carrying		Accumulated		Carrying
	(Dollars in thousands)	Amount		Amortization		Amount
	December 31, 2014:
	Core deposit intangible-First Brandon	$	2,476	$	2,285	$	191
	Core deposit intangible-First Community		992		897		95
	Customer list intangible-McCrillis & Eldredge		629		231		398
	Core deposit intangible—The Nashua Bank		2,086		720		1,366
	Customer list intangible-Charter Holding Corporation		4,036		662		3,374
	Core deposit intangible-Central Financial Corporation		4,568		660		3,908
	Total	$	14,787	$	5,455	$	9,332
	December 31, 2013:
	Core deposit intangible-First Brandon	$	2,476	$	2,131	$	345
	Core deposit intangible-First Community		992		830		162
	Customer list intangible-McCrillis & Eldredge		629		164		465
	Core deposit intangible—The Nashua Bank		2,086		379		1,707
	Customer list intangible-Charter Holding Corporation		4,036		168		3,868
	Core deposit intangible-Central Financial Corporation		4,568		95		4,473
	Total	$	14,787	$	3,767	$	11,020
	Aggregate amortization expense for core deposit intangibles was $1.1 million in 2014, $759 thousand in 2013 and $348 thousand in 2012. Amortization for core deposit intangibles is being calculated on the sum-of-the-years digits method over periods ranging from ten through fifteen years. Aggregate amortization expense for customer list intangibles was $561 thousand in 2014, $241 thousand in 2013 and $77 thousand in 2012. Amortization for customer list intangibles is being calculated on the sum-of-the-years digits method over 15 years.
	Estimated amortization expense for each of the five years succeeding 2014 is as follows:
	(Dollars in thousands)
	2015	$	1,510
	2016		1,332
	2017		1,154
	2018		1,007
	2019		892

Operating_Segments

Operating Segments	31 Months Ended
	Dec. 31, 2014
Operating Segments	NOTE 23. Operating Segments:
	The Company has two reportable operating segments: Banking, which includes the activities of the Bank and its subsidiaries, excluding CHC, and Wealth Management, which includes the activities of CHC and its subsidiaries. New Hampshire Thrift Bancshares, Inc. operates as the parent company of the Bank and its subsidiaries and all financial activity between them is eliminated.
	The accounting policies of each reportable segment are the same as those of the Company. Income tax expense for the individual segments is calculated based on the activity of the segments. CHC was acquired on September 4, 2013 and did not meet the requirements for disclosure of a reportable segment for the year ended December 31, 2013. There were no other reportable operating segments for the year ended December 31, 2012.
	A summary of the Company’s operating segments is as follows:
	(Dollars in thousands)	Banking		Wealth		Holding			Eliminations			Total
				Management		Company						Consolidated
	Year Ended December 31, 2014
	Net interest and dividend income (expense)	$	42,757	$	7	$	(835	)	$	—		$	41,929
	Provision for loan losses		905		—		—			—			905
	Non-interest income		10,810		8,416		6,993			(6,993	)		19,226
	Non-interest expense		38,865		7,035		746			—			46,646
	Income before provision for income taxes		13,797		1,388		5,412			(6,993	)		13,604
	Provision for income taxes		3,704		488		(628	)		—			3,564
	Net income	$	10,093	$	900	$	6,040		$	(6,993	)	$	10,040
	Total Assets	$	1,480,357	$	18,325	$	177,837		$	(172,733	)	$	1,503,786

Condensed_parent_company_only_

Condensed parent company only financial statements	31 Months Ended
	Dec. 31, 2014
Condensed parent company only financial statements	NOTE 24. Condensed parent company only financial statements:
	The following are condensed balance sheets, statements of income and cash flows for New Hampshire Thrift Bancshares, Inc. (“Parent Company Only”) as of and for the years ended December 31:
	CONDENSED BALANCE SHEETS
	(Dollars in thousands)	2014			2013
	ASSETS
	Cash	$	3,079		$	2,589
	Investment in subsidiary, Lake Sunapee Bank		172,730			166,182
	Investment in affiliate, NHTB Capital Trust II		310			310
	Investment in affiliate, NHTB Capital Trust III		310			310
	Deferred expenses		818			218
	Advances to Lake Sunapee Bank		68			28
	Other assets		522			429
	Total assets	$	177,837		$	170,066
	LIABILITIES
	Subordinated debentures	$	37,620		$	20,620
	Other liabilities		381			189
	Total liabilities		38,001			20,809
	STOCKHOLDERS’ EQUITY
	Stockholders’ equity		139,836			149,257
	Total liabilities and stockholders’ equity	$	177,837		$	170,066
	CONDENSED STATEMENTS OF INCOME
	(Dollars in thousands)	2014			2013			2012
	Dividends from subsidiary, Lake Sunapee Bank	$	4,000		$	4,000		$	—
	Dividends from subsidiaries, NHTB Capital Trust II and III		20			19			20
	Interest expense on subordinated debentures		855			806			1,027
	Interest expense on other borrowings		—			—			2
	Net operating loss including tax benefit		(118	)		(796	)		(840	)
	Income (loss) before equity in undistributed earnings of subsidiaries		3,047			2,417			(1,849	)
	Equity in undistributed earnings of subsidiaries		6,993			5,997			9,608
	Net income	$	10,040		$	8,414		$	7,759
	CONDENSED STATEMENTS OF CASH FLOWS
	(Dollars in thousands)	2014			2013			2012
	Cash flows from operating activities:
	Net income	$	10,040		$	8,414		$	7,759
	Decrease (increase) in other assets		31			(16	)		1
	Increase (decrease) in accrued interest payable and other liabilities		164			(397	)		345
	(Increase) decrease in taxes receivable		(113	)		(87	)		97
	Deferred tax benefit		(11	)		(11	)		(15	)
	Tax benefit for stock options and awards		(2	)		(30	)		(25	)
	Amortization of deferred expenses relating to issuance of capital securities and subordinated debentures		20			11			11
	Stock award expense		165			103			38
	Equity in undistributed earnings of subsidiaries		(6,993	)		(5,997	)		(9,608	)
	Net cash provided by (used in) operating activities		3,301			1,990			(1,397	)
	Cash flows from investing activities:
	Investment in subsidiary, Lake Sunapee Bank		3			(15,884	)		(10,364	)
	Net change in advances to subsidiary, Lake Sunapee Bank		(40	)		45			(30	)
	Net cash used in investing activities		(37	)		(15,839	)		(10,394	)
	Cash flows from financing activities:
	Proceeds from exercise of stock options		92			514			365
	Assumption of preferred stock		—			—			3,000
	Issuance of subordinated debt, net of issuance costs		16,380
	Issuance of common stock through dividend reinvestment plan contributions		109			202			—
	Redemption of preferred stock		(15,000	)		—			—
	Acquisition of Central Financial Corporation		—			15,985			—
	Acquisition of The Nashua Bank		—			—			14,632
	Purchase of warrants		—			—			(737	)
	Repayment of note payable		—			—			(543	)
	Tax benefit for stock options and awards		2			30			25
	Dividends paid on preferred stock		(230	)		(316	)		(848	)
	Dividends paid on common stock		(4,127	)		(3,684	)		(3,052	)
	Net cash (used in) provided by financing activities		(2,774	)		12,731			12,842
	Net increase (decrease) in cash		490			(1,118	)		1,051
	Cash, beginning of year		2,589			3,707			2,656
	Cash, end of year	$	3,079		$	2,589		$	3,707
The parent company only Statements of Changes in Stockholders’ Equity are identical to the Consolidated Statements of Changes in Stockholders’ Equity for the years ended December 31, 2014, 2013 and 2012 and are therefore not reprinted here.

Quarterly_Results_of_Operation

Quarterly Results of Operations (UNAUDITED)	31 Months Ended
	Dec. 31, 2014
Quarterly Results of Operations (UNAUDITED)	NOTE 25. Quarterly Results of Operations (UNAUDITED)
	Summarized quarterly financial data for 2014 and 2013 follows:
		(In thousands, except earnings per share)
		2014 Quarters Ended
		March 31		June 30		Sept 30		Dec 31
	Interest and dividend income	$	11,880	$	12,254	$	12,319	$	12,275
	Interest expense		1,627		1,591		1,689		1,892
	Net interest and dividend income		10,253		10,663		10,630		10,383
	Provision for loan losses		—		709		27		169
	Noninterest income		4,382		5,072		4,868		4,904
	Noninterest expense		11,593		11,690		11,458		11,905
	Income before income taxes		3,042		3,336		4,013		3,213
	Income tax expense		899		994		1,309		362
	Net income	$	2,143	$	2,342	$	2,704	$	2,851
	Net income available to common stockholders	$	2,085	$	2,284	$	2,646	$	2,795
	Basic earnings per common share	$	0.25	$	0.28	$	0.32	$	0.34
	Earnings per common share, assuming dilution	$	0.25	$	0.28	$	0.32	$	0.34
		(In thousands, except earnings per share)
		2013 Quarters Ended
		March 31		30-Jun		30-Sep		31-Dec
	Interest and dividend income	$	9,857	$	9,532	$	9,573	$	11,314
	Interest expense		1,709		1,717		1,500		1,571
	Net interest and dividend income		8,148		7,815		8,073		9,743
	Provision for loan losses		414		162		118		268
	Noninterest income		3,180		3,392		4,541		4,575
	Noninterest expense		8,031		8,269		9,509		11,155
	Income before income taxes		2,883		2,776		2,987		2,895
	Income tax expense		831		981		415		900
	Net income	$	2,052	$	1,795	$	2,572	$	1,995
	Net income available to common stockholders	$	1,911	$	1,735	$	2,514	$	1,937
	Basic earnings per common share	$	0.27	$	0.25	$	0.35	$	0.24
	Earnings per common share, assuming dilution	$	0.27	$	0.25	$	0.35	$	0.24

Subsequent_Events

Subsequent Events	31 Months Ended
	Dec. 31, 2014
Subsequent Events	NOTE 26. Subsequent Events
	On January 8, 2015, the Company declared a regular quarterly cash dividend of $0.13 per share, payable January 30, 2015 to stockholders of record as of January 23, 2015.

Reclassification

Reclassification	31 Months Ended
	Dec. 31, 2014
Reclassification	NOTE 27. Reclassification
	Certain amounts in the prior year have been reclassified to be consistent with the current year’s statement presentation.

Summary_of_significant_account1

Summary of significant accounting policies (Policies)	31 Months Ended
	Dec. 31, 2014
Use of estimates in the preparation of financial statements	Use of estimates in the preparation of financial statements—The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the 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 are the determination of the allowance for loan losses, fair values of investments securities, goodwill and intangibles and income taxes.
Principles of consolidation	Principles of consolidation—The consolidated financial statements include the accounts of the Company, the Bank, Lake Sunapee Group, Inc. (“LSGI”), which owns and maintains all buildings and investment properties; Lake Sunapee Financial Services Corp. (“LSFSC”), which sells brokerage securities and insurance products to customers; McCrillis & Eldredge Insurance, Inc. (“MEI”), a full-line independent insurance agency acquired in 2011, which offers a complete range of commercial insurance services and consumer products; and Charter Holding Corp. (“CHC”), which wholly owns Charter Trust Company (“CTC”), a trust services and wealth management company. LSGI, LSFSC, MEI, and CHC are wholly owned subsidiaries of the Bank. All significant intercompany accounts and transactions have been eliminated in consolidation.
	NHTB Capital Trust II and NHTB Capital Trust III, affiliates of the Company, were formed to sell capital securities to the public through a third party trust pool. In accordance with the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) 810-10, “Consolidation—Overall,” these subsidiaries have not been included in the consolidated financial statements.
Cash and cash equivalents	Cash and cash equivalents—For purposes of reporting cash flows, the Company considers cash and due from banks and Federal Reserve Bank interest-bearing deposit to be cash equivalents. Cash and due from banks as of December 31, 2014 and 2013 includes $11.4 million and $7.3 million, respectively, which is subject to withdrawal and usage restrictions to satisfy the reserve requirements of the Federal Reserve Bank.
Securities available-for-sale	Securities available-for-sale—Available-for-sale securities consist of bonds, notes, debentures, and certain equity securities. Unrealized holding gains and losses, net of tax, on available-for-sale securities are reported as a net amount in a separate component of stockholders’ equity until realized. Gains and losses on the sale of available-for-sale securities are determined using the specific-identification method.
Securities held-to-maturity	Securities held-to-maturity—Bonds, notes and debentures which the Company has the positive intent and ability to hold to maturity are reported at cost, adjusted for premiums and discounts recognized in interest income using the interest method over the period to maturity. For any debt security with a fair value less than its amortized cost basis, the Company will determine whether it has the intent to sell the debt security or whether it is more likely than not it will be required to sell the debt security before the recovery of its amortized cost basis. If either condition is met, the Company will recognize a full impairment charge to earnings. For all other debt securities that are considered other-than-temporarily impaired and do not meet either condition, the credit loss portion of impairment will be recognized in earnings as realized losses. The other-than-temporary impairment related to all other factors will be recorded in other comprehensive income.
	Declines in marketable equity securities below their cost that are deemed other than temporary are reflected in earnings as realized losses.
Securities held for trading	Securities held for trading—Trading securities are carried at fair value on the consolidated balance sheets. Unrealized holding gains and losses for trading securities are included in earnings.
Federal Home Loan Bank stock	Federal Home Loan Bank stock—As a member of the Federal Home Loan Bank (“FHLB”), the Company is required to invest in $100 par value stock of the FHLB. The FHLB capital structure mandates that members must own stock as determined by their Total Stock Investment Requirement which is the sum of a member’s Membership Stock Investment Requirement and Activity-Based Stock Investment Requirement. The Membership Stock Investment Requirement is calculated as 0.35% of a member’s Stock Investment Base, subject to a minimum investment of $10,000 and a maximum investment of $25,000,000. The Stock Investment Base is an amount calculated based on certain assets held by a member that are reflected on call reports submitted to applicable regulatory authorities. The Activity-Based Stock Investment Requirement is calculated as 3.0% for overnight advances, 4.0% for FHLB advances with original terms to maturity of two days to three months and 4.5% for other advances plus a percentage of advance commitments, 0.5% of standby letters of credit issued by the FHLB and 4.5% of the value of intermediated derivative contracts. Management evaluates the Company’s investment in FHLB stock for other-than-temporary impairment at least on a quarterly basis and more frequently when economic or market conditions warrant such evaluation. Based on its most recent analysis of the FHLB as of December 31, 2014, management deems its investment in FHLB stock to be not other-than-temporarily impaired.
Investment in CHC	Investment in CHC—Through September 3, 2013, the Company owned a 50% interest in CHC with one other New Hampshire bank. On September 4, 2013, the Company purchased the other bank’s ownership interest. As a result, the Bank wholly owned CHC at December 31, 2014 and December 31, 2013, and the accounts of CHC are included in the consolidated financial statements at said dates. Headquartered in Concord, New Hampshire, CHC provides trust and investment services from six offices across New Hampshire. Charter New England Agency, a subsidiary of CHC, provides life insurance, fixed and variable annuities and mutual fund products, in addition to full brokerage services.
	The Bank used the equity method of accounting to account for its 50% ownership investment in CHC through September 3, 2013. An investor using the equity method initially records an investment at cost. Subsequently, the carrying amount of the investment is increased to reflect the investor’s share of income of the investee and is reduced to reflect the investor’s share of losses of the investee or dividends received from the investee. The investor’s share of the income or losses of the investee is included in the investor’s net income as the investee reports them. Adjustments similar to those made in preparing consolidated financial statements, such as elimination of intercompany gains and losses, also are applicable to the equity method.
Loans held-for-sale	Loans held-for-sale—Mortgage loans originated and intended for sale in the secondary market are carried at the lower of cost or estimated market value in the aggregate. Net unrealized losses are recognized through a valuation allowance by charges to income. No losses have been recorded.
Nonaccrual loans	Nonaccrual loans—Residential real estate loans and consumer loans are placed on nonaccrual status when they become 90 days past due. Commercial loans are placed on nonaccrual status when they become 90 days past due or when it becomes probable that the Bank will be unable to collect all amounts due pursuant to the terms of the loan agreement. When a loan has been placed on nonaccrual status, previously accrued interest is reversed with a charge against interest income on loans. Interest received on nonaccrual loans is generally booked to interest income on a cash basis. Residential real estate loans and consumer loans generally are returned to accrual status when they are no longer over 90 days past due. Commercial loans are generally returned to accrual status when the collectability of principal and interest is reasonably assured.
Acquired Loans	Acquired loans—Acquired loans that have evidence of deterioration in credit quality since origination and for which it is probable, at acquisition, that all contractually required payments will not be collected are initially recorded at fair value without recording an allowance for loan losses. Fair value of the loans is determined using market participant assumptions in estimating the amount and timing of both principal and interest cash flows expected to be collected, as adjusted for an estimate of future credit losses and prepayments, and then applying a market-based discount rate to those cash flows.
	Under the accounting model for acquired loans, the excess of cash flows expected to be collected over the carrying amount of the loans, referred to as the “accretable yield,” is accreted into interest income over the life of the loans using the effective yield method. The difference between contractually required principal and interest payments and the cash flows expected to be collected, referred to as the “nonaccretable difference,” includes estimates of both the impact of prepayments and future credit losses expected to be incurred over the life of the loan. As such, charge-offs on acquired loans are first applied to the nonaccretable difference and then to any allowance for loan losses recognized subsequent to acquisition.
	Actual cash collections are monitored relative to management’s expectations and revised cash flow forecasts are prepared, as warranted. These revised forecasts involved updates, as necessary, of the key assumptions and estimates used in the initial estimate of fair value. Generally speaking, expected cash flows are affected by:
		•		Changes in the expected principal and interest payments over the estimated life—Updates to changes in expected cash flows are driven by the credit outlook and actions taken with borrowers. Changes in expected future cash flows resulting from loan modifications are included in the assessment of expected cash flows;
		•		Changes in prepayment assumptions—Prepayments affect the estimated lives of the loans which may change the amount of interest income, and possibly principal, expected to be collected; and
		•		Changes in interest rate indices for variable rate loans—Expected future cash flows are based, as applicable, on the variable rates in effect at the time of the assessment of expected cash flows.
Allowance for loan losses	Allowance for loan losses—The allowance for loan losses is established as losses are estimated to have occurred through a provision for loan losses charged to earnings. Loan losses are charged against the allowance when management believes the uncollectibility of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance.
	The allowance for loan losses is evaluated on a regular basis by management and is based upon management’s periodic review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available.
	General component—The general component of the allowance for loan losses is based on historical loss experience adjusted for qualitative factors stratified by the following loan segments: residential real estate, commercial real estate, construction, commercial and consumer. Management uses a rolling average of historical losses based on a time frame appropriate to capture relevant loss data for each loan segment. This historical loss factor is adjusted for the following qualitative factors: levels/trends in delinquencies; trends in volume and terms of loans; effects of changes in risk selection and underwriting standards and other changes in lending policies, procedures and practices; experience/ability/depth of lending management and staff; concentration of credit risk and national and local economic trends and conditions. There were no significant changes in the Company’s policies or methodology pertaining to the general component of the allowance for loan losses during 2014.
	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 Bank generally does not originate loans with a loan-to-value ratio greater than 80 percent and does not grant subprime loans. All loans in this segment are collateralized by owner-occupied residential real estate and repayment is dependent on the credit quality of the individual borrower. The overall health of the economy, including unemployment rates and housing prices, will have an effect on the credit quality in this segment. This segment also includes home equity loans.
	Commercial real estate: Loans in this segment are primarily income-producing properties throughout New Hampshire and Vermont. The underlying cash flows generated by the properties are 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. Management periodically obtains rent rolls and continually monitors the cash flows of these loans.
	Construction loans: The Bank offers construction loan financing on one-to-four family owner occupied dwellings in the Bank’s local real estate market. Generally, the Bank makes construction loans up to 80% of value with terms of up to nine months. During the construction phase, inspections are made to assess construction progress and monitor the disbursement of loan proceeds. The Bank also offers a “one-step” construction loan, which provides construction and permanent financing with one loan closing. The “one-step” is provided under the same terms and conditions of the Bank’s conventional residential program.
	Commercial loans: Loans in this segment are made to businesses and are generally secured by assets of the business. Repayment is expected from the cash flows of the business. A weakened economy, and resultant decreased consumer spending, will have an effect on the credit quality in this segment.
	Consumer loans: Loans in this segment are unsecured or secured by collateral such as automobiles, boats and other recreational vehicles. Repayment is dependent on the credit quality of the individual borrower.
	Allocated component—The allocated component relates to loans that are classified as impaired. Impairment is measured on a loan by loan basis for commercial, commercial real estate and construction loans 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 are lower than the carrying value of that loan. Large groups of smaller balance homogeneous loans are collectively evaluated for impairment. Accordingly, the Company does not separately identify individual consumer and residential real estate loans for impairment disclosures, unless such loans meet certain criteria as outlined in the Company’s loan policy or are subject to a troubled debt restructuring agreement.
	A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan by loan basis for commercial and construction loans by either the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s obtainable market price, or the fair value of the collateral if the loan is collateral dependent.
	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.
	Unallocated component—An unallocated component may be 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.
Deferred loan origination fees/costs	Deferred loan origination fees/costs—Loan origination fees, commitment fees and certain direct origination costs are deferred, and the net amount is amortized as an adjustment of the related loan’s yield. The Company amortizes these amounts over the contractual lives of the related loans.
Loan servicing	Loan servicing—The Company recognizes as separate assets from their related loans the rights to service mortgage loans for others, either through acquisition of those rights or from the sale or securitization of loans with the servicing rights retained on those loans, based on their relative fair values. To determine the fair value of the servicing rights created, the Company uses the market prices under comparable servicing sale contracts, when available, or alternatively uses a valuation model that calculates the present value of future cash flows to determine the fair value of the servicing rights. In using this valuation method, the Company incorporates assumptions that market participants would use in estimating future net servicing income, which includes estimates of the cost of servicing loans, the discount rate, ancillary income, prepayment speeds and default rates.
	Mortgage servicing rights are amortized in proportion to, and over the period of, estimated net servicing revenues. Refinance activities are considered in estimating the period’s net servicing revenues. Impairment of mortgage servicing rights is assessed based on the fair value of those rights. Fair values are estimated using discounted cash flows based on a current market interest rate. For purposes of measuring impairment, the rights are stratified based on the interest rate risk characteristics of the underlying loans. The amount of impairment recognized is the amount by which the capitalized mortgage servicing rights for a stratum exceed their fair value.
Concentration of credit risk	Concentration of credit risk—Most of the Company’s business activity is with customers located within the states of New Hampshire and Vermont. There are no concentrations of credit to borrowers that have similar economic characteristics. The majority of the Company’s loan portfolio is composed of loans collateralized by real estate located in the states of New Hampshire and Vermont.
Premises and equipment	Premises and equipment—Company premises and equipment are stated at cost, less accumulated depreciation. Depreciation is computed using straight-line and accelerated methods over the estimated useful lives of the assets. Estimated lives are 5 to 40 years for buildings and premises and 3 to 15 years for furniture, fixtures and equipment. Expenditures for replacements or major improvements are capitalized and expenditures for normal maintenance and repairs are charged to expense as incurred. Upon the sale or retirement of Company premises and equipment, the cost and accumulated depreciation are removed from the respective accounts and any gain or loss is included in income.
Investment in real estate	Investment in real estate—Investment in real estate is carried at the lower of cost or estimated fair value. The buildings are being depreciated over their useful lives. The properties consist of three buildings that the Company rents for commercial purposes. Rental income is recorded in income when received and expenses for maintaining these assets are charged to expense as incurred.
Real estate owned and property acquired in settlement of loans	Real estate owned and property acquired in settlement of loans—The Company classifies loans as in-substance repossessed or foreclosed if the Company receives physical possession of the debtor’s assets regardless of whether formal foreclosure proceedings take place. At the time of foreclosure or possession, the Company records the property at estimated fair value minus estimated costs to sell. All properties are periodically reviewed and declines in the value of the property are charged against income.
Earnings per share	Earnings per share—Basic earnings per share represents net income available to common stockholders divided by the weighted-average number of common shares outstanding during the period. If rights to dividends on unvested options/awards are non-forfeitable, these unvested awards/options are considered outstanding in the computation of basic earnings per share. Diluted earnings per share, if applicable, reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock or resulted in the issuance of common stock that then shared in the earnings of the entity.
Advertising	Advertising—The Company directly expenses costs associated with advertising as they are incurred.
Income taxes	Income taxes—The Company recognizes income taxes under the asset and liability method. Under this method, deferred tax assets and liabilities are established for the temporary differences between the accounting basis and the tax basis of the Company’s assets and liabilities at enacted tax rates expected to be in effect when the amounts related to such temporary differences are realized or settled.
Goodwill and other intangibles	Goodwill and other intangibles—Business combinations are accounted for using the acquisition method of accounting. Accordingly, the net assets of the companies acquired are recorded at their fair values at the date of acquisition. Goodwill represents the excess of purchase price over the fair value of net assets acquired and is assigned to specific reporting units which are the same as the operating segments. Other intangible assets represent purchased assets that lack physical substance, but can be distinguished from goodwill because of contractual or other legal rights, or because the asset is capable of being sold or exchanged either on its own, or in combination with a related contract, asset, or liability.
	The Company evaluates goodwill and other intangibles on an annual basis or whenever there is an indicator of impairment. Any impairment losses are charged to earnings. The Company amortizes other intangible assets over their respective estimated useful lives. The Company has estimated the remaining useful life of its insurance agency customer list intangible, trust company customer list intangible, and core deposit intangible assets to have a weighted-average of fifteen years, fifteen years, and ten years, respectively. Intangible assets are stated at cost less accumulated amortization.
Fair value of financial instruments	Fair value of financial instruments—The following methods and assumptions were used by the Company in estimating fair values of financial instruments as disclosed herein:
	Cash and cash equivalents—The carrying amounts of cash and cash equivalents approximate their fair values.
	Available-for-sale securities—Fair values for available-for-sale securities are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments.
	Loans held-for-sale—Fair values of loans held-for-sale are based on estimated market values.
	Loans receivable—For variable-rate loans that reprice frequently and have no significant change in credit risk, fair values are based on carrying values. Fair values for all other loans are estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. Fair values for impaired loans are estimated using discounted cash flow analyses or underlying collateral values, where applicable.
	Investment in unconsolidated subsidiaries—Fair value of investment in unconsolidated subsidiaries is estimated using discounted cash flow analyses, using interest rates currently being offered for similar investments.
	Accrued interest receivable—The carrying amounts of accrued interest receivable approximate their fair values.
	Deposit liabilities—The fair values disclosed for demand deposits are, by definition, equal to the amount payable on demand at the reporting date (that is, their carrying amounts). The carrying amounts of variable-rate, fixed term money-market accounts and certificates of deposits (CDs) approximate their fair values at the reporting date. Fair values for fixed-rate CDs are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits.
	Federal Home Loan Bank advances—Fair values for FHLB advances are estimated using a discounted cash flow technique that applies interest rates currently being offered on advances to a schedule of aggregated expected monthly maturities on FHLB advances.
	Securities sold under agreements to repurchase—The carrying amounts of securities sold under agreements to repurchase approximate their fair values.
	Subordinated debentures—Fair values of subordinated debentures are estimated using discounted cash flow analyses, using interest rates currently being offered for debentures with similar terms.
	Derivative financial instruments—Fair values for interest rate swap agreements are based upon the amounts required to settle the contracts.
	Off-balance sheet instruments—Fair values for loan commitments have not been presented as the future revenue derived from such financial instruments is not significant.
Interest rate swap agreement	Interest rate swap agreement—For asset/liability management purposes, the Company uses interest rate swap agreements to hedge various exposures or to modify interest rate characteristics of various balance sheet accounts. Such derivatives are used as part of the asset/liability management process and are linked to specific assets or liabilities, and have high correlation between the contract and the underlying item being hedged, both at inception and throughout the hedge period. At December 31, 2014 and 2013, the Company had no active interest rate swap agreements.
	The Company may utilize interest rate swap agreements to convert a portion of its variable-rate debt to a fixed rate (cash flow hedge). Interest rate swaps are contracts in which a series of interest rate flows are exchanged over a prescribed period. The notional amount on which the interest payments are based is not exchanged.
	The effective portion of the gain or loss on a derivative designated and qualifying as a cash flow hedging instrument is initially reported as a component of other comprehensive income and subsequently reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. The ineffective portion of the gain or loss on the derivative instrument, if any, is recognized currently in earnings.
	Interest rate derivative financial instruments receive hedge accounting treatment only if they are designated as a hedge and are expected to be, and are, effective in substantially reducing interest rate risk arising from the assets and liabilities identified as exposing the Company to risk. Those derivative financial instruments that do not meet the hedging criteria discussed below would be classified as trading activities and would be recorded at fair value with changes in fair value recorded in income. Derivative hedge contracts must meet specific effectiveness tests (i.e., over time the change in their fair values due to the designated hedge risk must be within 80 to 125 percent of the opposite change in the fair values of the hedged assets or liabilities). Changes in fair value of the derivative financial instruments must be effective at offsetting changes in the fair value of the hedged items due to the designated hedge risk during the term of the hedge. Further, if the underlying financial instrument differs from the hedged asset or liability, there must be a clear economic relationship between the prices of the two financial instruments. If periodic assessment indicates derivatives no longer provide an effective hedge, the derivatives contracts would be closed out and settled or classified as a trading activity.
	Hedges of variable-rate debt are accounted for as cash flow hedges, with changes in fair value recorded in other assets or liabilities and other comprehensive income. The net settlement (upon close out or termination) that offsets changes in the value of the hedged debt is deferred and amortized into net interest income over the life of the hedged debt. The portion, if any, of the net settlement amount that did not offset changes in the value of the hedged asset or liability is recognized immediately in non-interest income.
	Cash flows resulting from the derivative financial instruments that are accounted for as hedges of assets and liabilities are classified in the cash flow statement in the same category as the cash flows of the items being hedged.
Operating Segments	Operating Segments—The Company’s operations are managed along two reportable segments that represent the core businesses: Banking and Wealth Management. The Banking segment provides a wide array of lending and depository-related products and services to individuals, businesses and municipal enterprises. The Banking segment also provides insurance and brokerage services through the Bank’s subsidiaries, MEI and LSFSC, respectively. The Wealth Management segment provides trust and investment services through the Bank’s subsidiaries, CHC and CTC. A summary of the financial results for each of our operating segments is included in note 23—Operating Segments.
Stock based compensation	Stock based compensation—At December 31, 2014, the Company has one stock-based employee compensation plan under which additional shares are available to be granted. The Company accounts for this plan under ASC 718-10, “Compensation—Stock Compensation—Overall.” See Note 11.
Recent Accounting Pronouncements	Recent Accounting Pronouncements—In January 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2014-01, “Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects.” The amendments in this ASU apply to all reporting entities that invest in qualified affordable housing projects through limited liability entities that are flow-through entities for tax purposes as follows:
		1	For reporting entities that meet the conditions for and that elect to use the proportional amortization method to account for investments in qualified affordable housing projects, all amendments in this ASU apply.
		2	For reporting entities that do not meet the conditions for or that do not elect the proportional amortization method, only the amendments in this ASU that are related to disclosures apply.
	The amendments in this ASU permit reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense (benefit). For those investments in qualified affordable housing projects not accounted for using the proportional amortization method, the investment should be accounted for as an equity method investment or a cost method investment in accordance with Subtopic 970-323. The amendments in this ASU should be applied retrospectively to all periods presented. A reporting entity that uses the effective yield method to account for its investments in qualified affordable housing projects before the date of adoption may continue to apply the effective yield method for those preexisting investments. The amendments in this ASU are effective for annual periods and interim reporting periods within those annual periods, beginning after December 15, 2014. Early adoption is permitted. The Company anticipates that the adoption of this guidance will not have a material impact on its consolidated financial statements.
	In January 2014, the FASB issued ASU 2014-04, “Receivables-Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure.” The objective of the amendments in this ASU is to reduce diversity by clarifying when an in substance repossession or foreclosure occurs, that is, when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan receivable should be derecognized and the real estate property recognized. The amendments in this ASU clarify that an in substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (i) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (ii) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosure of both (i) the amount of foreclosed residential real estate property held by the creditor and (ii) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. The amendments in this ASU are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. The Company can elect to adopt the amendments in this ASU using either a modified retrospective transition method or a prospective transition method. The Company anticipates that the adoption of this guidance will not have a material impact on its consolidated financial statements.
	In April 2014, the FASB issued ASU 2014-08, “Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity.” This ASU changes the criteria for reporting discontinued operations and modifies related disclosure requirements. The new guidance is effective on a prospective basis for fiscal years beginning on or after December 15, 2014, and interim periods within those years. The Company anticipates that the adoption of this guidance will not have a material impact on its consolidated financial statements.
	In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606).” The objective of this ASU is to clarify principles for recognizing revenue and to develop a common revenue standard for GAAP and International Financial Reporting Standards. The guidance in this ASU affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards. The core principal of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendments in this update are effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The Company is currently reviewing this ASU to determine if it will have an impact on its consolidated financial statements.
	In June 2014, the FASB issued ASU 2014-11, “Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures.” The amendments in this ASU require two accounting changes. First, the amendments in this ASU change the accounting for repurchase-to-maturity transactions to secured borrowing accounting. Second, for repurchase financing arrangements, the amendments require separate accounting for a transfer of a financial asset executed contemporaneously with a repurchase agreement with the same counterparty, which will result in secured borrowing accounting for the repurchase agreement. This ASU also includes new disclosure requirements. The accounting changes in this Update are effective for the first interim or annual period beginning after December 15, 2014. An entity is required to present changes in accounting for transactions outstanding on the effective date as a cumulative-effect adjustment to retained earnings as of the beginning of the period of adoption. Earlier application is prohibited. The Company anticipates that the adoption of this guidance will not have a material impact on its consolidated financial statements.
	In June 2014, the FASB issued ASU 2014-12, “Compensation—Stock Compensation (Topic 718): Accounting for Share-Based Payments When the Terms of an Award Provide That a Performance Target Could be Achieved after the Requisite Service Period.” The amendments in this ASU require that a performance target that affects vesting and that could be achieved after the requisite service period be treated as a performance condition. A reporting entity should apply existing guidance in Topic 718 as it relates to awards with performance conditions that affect vesting to account for such awards. This ASU is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2015. Earlier adoption is permitted. ASU 2014-12 may be adopted either (a) prospectively to all awards granted or modified after the effective date or (b) retrospectively to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements, and to all new or modified awards thereafter. If retrospective transition is adopted, the cumulative effect of applying this update as of the beginning of the earliest annual period presented in the financial statements should be recognized as an adjustment to the opening retained earnings balance at that date. The Company anticipates that the adoption of this guidance will not have a material impact on its consolidated financial statements.
	In August 2014, the FASB issued ASU 2014-13, “Consolidation (Topic 810): Measuring the Financial Assets and the Financial Liabilities of a Consolidated Collateralized Financing Entity.” This ASU applies to entities that meet the following criteria:
		1	they are required to consolidate a collateralized entity under the Variable Interest Entities guidance;
		2	they measure all of the financial assets and the financial liabilities of that consolidated collateralized financing entity at fair value in the consolidated financial statements based on other FASB rules; and
		3	those changes in fair value are reflected in earnings.
	Under ASU 2014-13, entities that meet these criteria are provided an alternative under which they can choose to eliminate the difference between the fair value of financial assets and financial liabilities of a consolidated collateralized financing entity. If that alternative is not elected, then ASU 2014-13 indicates that the fair value of the financial assets and the fair value of the financial liabilities of the consolidated collateralized financing entity should be measured in accordance with ASC 820, “Fair Value Measurement,” and differences between the fair value of the financial assets and the financial liabilities of that consolidated collateralized financing entity should be reflected in earnings and attributed to the reporting entity in the consolidated statement of income or loss. The amendments in this ASU are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2015. The Company anticipates that the adoption of this ASU will not have an impact on its consolidated financial statements.
	In August 2014, the FASB issued ASU 2014-14, “Receivables—Troubled Debt Restructurings by Creditors (Subtopic 310-40): Classification of Certain Government—Guaranteed Mortgage Loans upon Foreclosure.” The amendments in this ASU require that a mortgage loan be derecognized and that a separate other receivable be recognized upon foreclosure if the following conditions are met:
		1	the loan has a government guarantee that is not separable from the loan before foreclosure;
		2	at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim; and
		3	at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed.
	Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance (principal and interest) expected to be recovered from the guarantor. The amendments in this ASU are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. The Company anticipates that the adoption of this ASU will not have a material impact on its consolidated financial statements.
	In August 2014, the FASB issued ASU 2014-15, “Presentation of Financial Statements—Going Concern (Subtopic 205-40).” The amendments in this ASU provide guidance about management’s responsibility to evaluate whether there is substantial doubt about an entity’s ability to continue as a going concern and to provide related footnote disclosures. The amendments require management to assess an entity’s ability to continue as a going concern by incorporating and expanding upon certain principles that are currently in U.S. auditing standards. Specifically, the amendments (1) provide a definition of the term substantial doubt, (2) require an evaluation every reporting period including interim periods, (3) provide principles for considering the mitigating effect of management’s plans, (4) require certain disclosures when substantial doubt is alleviated as a result of consideration of management’s plans, (5) require an express statement and other disclosures when substantial doubt is not alleviated, and (6) require an assessment for a period of one year after the date that the financial statements are issued (or available to be issued). The amendments in this ASU are effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted. The adoption of this guidance is not expected to have an impact on the Company’s results of operations or financial position.
	In November 2014, the FASB issued ASU 2014-16, “Derivatives and Hedging (Topic 815).” The objective of this ASU is to eliminate the use of different methods in practice and thereby reduce existing diversity under GAAP in the accounting for hybrid financial instruments issued in the form of a share. The amendments in this ASU apply to all entities that are issuers of, or investors in, hybrid financial instruments that are issued in the form of a share. The amendments in this ASU do not change the current criteria in GAAP for determining when separation of certain embedded derivative features in a hybrid financial instrument is required. The amendments clarify how current GAAP should be interpreted in evaluating the economic characteristics and risks of a host contract in a hybrid financial instrument that is issued in the form of a share. Specifically, the amendments clarify that an entity should consider all relevant terms and features, including the embedded derivative feature being evaluated for bifurcation, in evaluating the nature of the host contract. Furthermore, the amendments clarify that no single term or feature would necessarily determine the economic characteristics and risks of the host contract. Rather, the nature of the host contract depends upon the economic characteristics and risks of the entire hybrid financial instrument. In addition, the amendments in this ASU clarify that, in evaluating the nature of a host contract, an entity should assess the substance of the relevant terms and features when considering how to weight those terms and features. Specifically, the assessment of the substance of the relevant terms and features should incorporate a consideration of (1) the characteristics of the terms and features themselves, (2) the circumstances under which the hybrid financial instrument was issued or acquired, and (3) the potential outcomes of the hybrid financial instrument, as well as the likelihood of those potential outcomes. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The adoption of this guidance is not expected to have an impact on the Company’s results of operations or financial position.
	In November 2014, the FASB issued ASU 2014-17, “Business Combinations (Topic 805): Pushdown Accounting.” The amendments in this ASU provide guidance on whether and at what threshold an acquired entity that is a business or nonprofit activity may elect to apply pushdown accounting in its separate financial statements upon a change-in-control event in which an acquirer obtains control of the acquired entity. The amendments in this ASU are effective on November 18, 2014. After the effective date, an acquired entity can make an election to apply the guidance to future change-in-control events or to its most recent change-in-control event. However, if the financial statements for the period in which the most recent change-in-control event occurred already have been issued or made available to be issued, the application of this guidance would be a change in accounting principle. The adoption of this guidance did not have an impact on the Company’s results of operations or financial position.
	In January 2015, the FASB issued ASU 2015-01, “Income Statement—Extraordinary and Unusual Items (Subtopic 225-20).” The amendments in this ASU eliminate the concept of extraordinary items. Eliminating the concept of extraordinary items will save time and reduce costs for preparers because they will not have to assess whether a particular event or transaction event is extraordinary (even if they ultimately would conclude it is not). This also alleviates uncertainty for preparers, auditors, and regulators because auditors and regulators no longer will need to evaluate whether a preparer treated an unusual and/or infrequent item appropriately. The presentation and disclosure guidance for items that are unusual in nature or occur infrequently will be retained and will be expanded to include items that are both unusual in nature and infrequently occurring. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. A reporting entity may apply the amendments prospectively. A reporting entity also may apply the amendments retrospectively to all prior periods presented in the financial statements. Early adoption is permitted provided that the guidance is applied from the beginning of the fiscal year of adoption. The adoption of this guidance is not expected to have an impact on the Company’s results of operations or financial position.

Securities_Tables

Securities (Tables)	31 Months Ended
	Dec. 31, 2014
Amortized Cost of Securities Available-for-Sale and Approximate Fair Values	The amortized cost of securities and their approximate fair values are summarized as follows:
	(Dollars in thousands)	Amortized		Gross		Gross		Fair
		Cost		Unrealized		Unrealized		Value
		Basis		Gains		Losses
	December 31, 2014:
	Available-for-sale securities
	Bonds and notes—
	U.S. Treasury notes	$	40,512	$	—	$	389	$	40,123
	U.S. Government-sponsored enterprise bonds		7,361		2		98		7,265
	Mortgage-backed securities		58,439		112		271		58,280
	Municipal bonds		9,579		103		86		9,596
	Other bonds and debentures		114		12		—		126
	Equity securities		258		51		1		308
	Total available-for-sale	$	116,263	$	280	$	845	$	115,698
	December 31, 2013:
	Available-for-sale securities
	Bonds and notes—
	U.S. Treasury notes	$	50,683	$	—	$	667	$	50,016
	U.S. Government-sponsored enterprise bonds		7,388		4		232		7,160
	Mortgage-backed securities		47,612		27		992		46,647
	Municipal bonds		20,532		63		489		20,106
	Other bonds and debentures		263		12		—		275
	Equity securities		742		292		—		1,034
	Total available-for-sale	$	127,220	$	398	$	2,380	$	125,238
Maturities of Debt Securities, Excluding Mortgage-Backed Securities	Maturities of debt securities, excluding mortgage-backed securities, classified as available-for-sale are as follows as of December 31, 2014:
	(Dollars in thousands)	Fair
		Value
	U.S. Treasury notes	$	10,075
	Municipal bonds		945
	Total due in less than one year	$	11,020
	U.S. Treasury notes	$	30,048
	U.S. Government-sponsored enterprise bonds		6,906
	Municipal bonds		4,509
	Other bonds and debentures		97
	Total due after one year through five years	$	41,560
	U.S. Government-sponsored enterprise bonds	$	188
	Municipal bonds		2,932
	Total due after five years through ten years	$	3,120
	U.S. Government-sponsored enterprise bonds	$	171
	Municipal bonds		1,210
	Other bonds and debentures		29
	Total due after ten years	$	1,410
Aggregate Fair Value and Unrealized Losses of Securities that have been in Continuous Unrealized-Loss Position	The aggregate fair value and unrealized losses of securities that have been in a continuous unrealized loss position for less than twelve months and for twelve months or more, and are not other-than-temporarily impaired, are as follows as of December 31:
		Less than 12 Months				12 Months or Longer				Total
	(Dollars in thousands)	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
		Value		Losses		Value		Losses		Value		Losses
	December 31, 2014:
	Bonds and notes—
	U.S. Treasury notes	$	10,112	$	53	$	20,012	$	336	$	30,124	$	389
	U.S. Government-sponsored enterprise bonds		—		—		7,077		98		7,077		98
	Mortgage-backed securities		12,109		14		13,675		257		25,784		271
	Municipal bonds		—		—		3,554		86		3,554		86
	Equity securities		42		1		—		—		42		1
	Total temporarily impaired securities	$	22,263	$	68	$	44,318	$	777	$	66,581	$	845
	December 31, 2013:
	Bonds and notes—
	U.S. Treasury notes	$	29,961	$	273	$	10,056	$	394	$	40,017	$	667
	U.S. Government-sponsored enterprise bonds		6,954		232		—		—		6,954		232
	Mortgage-backed securities		38,574		663		5,976		329		44,550		992
	Municipal bonds		10,140		489		—		—		10,140		489
	Total temporarily impaired securities	$	85,629	$	1,657	$	16,032	$	723	$	101,661	$	2,380

Loans_receivable_Tables

Loans receivable (Tables)	31 Months Ended
	Dec. 31, 2014
Loans Receivable	Loans receivable consisted of the following as of December 31:
			2014									2013
	(Dollars in thousands)		Originated			Acquired			Total			Originated			Acquired			Total
	Real estate:
	Conventional		$	592,386		$	53,304		$	645,690		$	536,588		$	65,682		$	602,270
	Home equity			63,176			6,027			69,203			63,736			6,828			70,564
	Commercial			235,640			77,377			313,017			198,741			89,072			287,813
	Construction			34,988			1,457			36,445			26,062			3,660			29,722
				926,190			138,165			1,064,355			825,127			165,242			990,369
	Commercial and municipal loans			125,161			13,414			138,575			121,256			18,815			140,071
	Consumer loans			7,438			1,712			9,150			6,829			2,988			9,817
	Total loans			1,058,789			153,291			1,212,080			953,212			187,045			1,140,257
	Allowance for loan losses			(9,269	)		—			(9,269	)		(9,757	)		—			(9,757	)
	Deferred loan origination costs, net			4,034			—			4,034			3,610			—			3,610
	Loans receivable, net		$	1,053,554		$	153,291		$	1,206,845		$	947,065		$	187,045		$	1,134,110
Allowance for Loan and Lease Losses by Portfolio Segment	The following table sets forth information regarding the allowance for loan and lease losses by portfolio segment as of and for the years ended December 31:
			Real Estate:
	(Dollars in thousands)		Conventional and			Commercial			Construction			Commercial			Consumer			Unallocated			Total
			Home Equity									and Municipal
	December 31, 2014:
	Allowance for loan losses:
	Originated:
	Beginning balance		$	5,385		$	2,143		$	353		$	1,561		$	75		$	240		$	9,757
	Charge-offs			(681	)		(533	)		—			(445	)		(219	)		—			(1,878	)
	Recoveries			314			1			—			57			113			—			485
	(Benefit) provision			(255	)		1,113			638			(538	)		117			(170	)		905
	Ending balance		$	4,763		$	2,724		$	991		$	635		$	86		$	70		$	9,269
	Acquired:
	Beginning balance		$	—		$	—		$	—		$	—		$	—		$	—		$	—
	Charge-offs			—			—			—			—			—			—			—
	Recoveries			—			—			—			—			—			—			—
	Provision (benefit)			—			—			—			—			—			—			—
	Ending balance		$	—		$	—		$	—		$	—		$	—		$	—		$	—
	Originated:
	Individually evaluated for impairment		$	50		$	17		$	—		$	—		$	—		$	—		$	67
	Collectively evaluated for impairment			4,713			2,707			991			635			86			70			9,202
	Acquired loans:
	(discounts related to credit quality)			—			—			—			—			—			—			—
	Total allowance for loan losses ending balance		$	4,763		$	2,724		$	991		$	635		$	86		$	70		$	9,269
	Loans:
	Originated:
	Individually evaluated for impairment		$	5,965		$	8,110		$	1,163		$	880		$	—		$	—		$	16,118
	Collectively evaluated for impairment			649,597			227,530			33,825			124,281			7,438			—			1,042,671
	Acquired loans:
	(discounts related to credit quality)			59,331			77,377			1,457			13,414			1,712			—			153,291
	Total loans ending balance		$	714,893		$	313,017		$	36,445		$	138,575		$	9,150		$	—		$	1,212,080
			Real Estate:
	(Dollars in thousands)		Conventional and			Commercial			Construction			Commercial			Consumer			Unallocated			Total
			Home Equity									and Municipal
	December 31, 2013:
	Allowance for loan losses:
	Originated:
	Beginning balance		$	4,897		$	3,616		$	208		$	918		$	58		$	226		$	9,923
	Charge-offs			(851	)		(593	)		—			(302	)		(230	)		—			(1,976	)
	Recoveries			267			284			—			154			142			—			847
	Provision (benefit)			1,072			(1,164	)		145			791			105			14			963
	Ending balance		$	5,385		$	2,143		$	353		$	1,561		$	75		$	240		$	9,757
	Acquired:
	Beginning balance		$	—		$	—		$	—		$	—		$	—		$	—		$	—
	Charge-offs			—			—			—			—			—			—			—
	Recoveries			—			—			—			—			—			—			—
	Provision (benefit)			—			—			—			—			—			—			—
	Ending balance		$	—		$	—		$	—		$	—		$	—		$	—		$	—
	Originated:
	Individually evaluated for impairment		$	71		$	116		$	—		$	10		$	—		$	—		$	197
	Collectively evaluated for impairment			5,314			2,027			353			1,551			75			240			9,560
	Acquired loans:
	(discounts related to credit quality)			—			—			—			—			—			—			—
	Total allowance for loan losses ending balance		$	5,385		$	2,143		$	353		$	1,561		$	75		$	240		$	9,757
	Loans:
	Originated:
	Individually evaluated for impairment		$	6,716		$	11,363		$	1,494		$	1,582		$	—		$	—		$	21,155
	Collectively evaluated for impairment			593,608			187,378			24,568			119,674			6,829			—			932,057
	Acquired loans:
	(discounts related to credit quality)			72,510			89,072			3,660			18,815			2,988			—			187,045
	Total loans ending balance		$	672,834		$	287,813		$	29,722		$	140,071		$	9,817		$	—		$	1,140,257
			Real Estate:
	(Dollars in thousands)		Conventional and			Commercial			Construction			Commercial			Consumer			Unallocated			Total
			Home Equity									and Municipal
December 31, 2012:
Allowance for loan losses:
Originated:
Beginning balance		$	4,845		$	3,146		$	222		$	721		$	58		$	139		$	9,131
Charge-offs			(1,239	)		(474	)		(138	)		(438	)		(220	)		—			(2,509	)
Recoveries			167			56			68			142			163			—			596
Provision (benefit)			1,124			888			56			493			57			87			2,705
Ending balance		$	4,897		$	3,616		$	208		$	918		$	58		$	226		$	9,923
Acquired:
Beginning balance		$	—		$	—		$	—		$	—		$	—		$	—		$	—
Charge-offs			—			—			—			—			—			—			—
Recoveries			—			—			—			—			—			—			—
Provision (benefit)			—			—			—			—			—			—			—
Ending balance		$	—		$	—		$	—		$	—		$	—		$	—		$	—
Originated:
Individually evaluated for impairment		$	232		$	129		$	—		$	—		$	—		$	—		$	361
Collectively evaluated for impairment			4,665			3,487			208			918			58			226			9,562
Acquired loans:
(discounts related to credit quality)			—			—			—			—			—			—			—
Total allowance for loan losses ending balance		$	4,897		$	3,616		$	208		$	918		$	58		$	226		$	9,923
Loans:
Originated:
Individually evaluated for impairment		$	6,964		$	9,988		$	1,527		$	402		$	—		$	—		$	18,881
Collectively evaluated for impairment			519,417			168,586			13,706			93,278			6,595			—			801,582
Acquired loans:
(discounts related to credit quality)			14,359			55,690			4,179			14,070			709			—			89,007
Total loans ending balance		$	540,740		$	234,264		$	19,412		$	107,750		$	7,304		$	—		$	909,470
Nonaccrual Loans and Past-due Loans	The following tables set forth information regarding nonaccrual and past due loans as of December 31, 2014 and December 31, 2013:
	(Dollars in thousands)		30-59 Days			60-89 Days			90 Days			Total			Total			Total			90 Days			Nonaccrual
									or More			Past Due			Current						or More			Loans
									Past Due												Past Due
																					and Accruing
	December 31, 2014:
	Real estate:
	Conventional		$	3,546		$	1,399		$	1,432		$	6,377		$	639,313		$	645,690		$	—		$	2,426
	Home equity			60			31			181			272			68,931			69,203			—			181
	Commercial			2,228			1,472			1,343			5,043			307,974			313,017			—			3,926
	Construction			—			28			15			43			36,402			36,445			—			15
	Commercial and municipal			305			463			330			1,098			137,477			138,575			—			779
	Consumer (including credit card)			71			21			—			92			9,058			9,150			—			—
	Total		$	6,210		$	3,414		$	3,301		$	12,925		$	1,199,155		$	1,212,080		$	—		$	7,327
	(Dollars in thousands)		30-59 Days			60-89 Days			90 Days			Total			Total			Total			90 Days			Nonaccrual
									or More			Past Due			Current						or More			Loans
									Past Due												Past Due
																					and Accruing
	December 31, 2013:
	Real estate:
	Conventional		$	2,654		$	498		$	2,812		$	5,964		$	596,306		$	602,270		$	—		$	3,821
	Commercial			1,859			267			903			3,029			284,784			287,813			—			4,512
	Home equity			53			57			52			162			70,402			70,564			—			104
	Construction			95			—			—			95			29,627			29,722			—			230
	Commercial and municipal			133			10			159			302			139,769			140,071			—			621
	Consumer			29			60			15			104			9,713			9,817			—			15
	Total		$	4,823		$	892		$	3,941		$	9,656		$	1,130,601		$	1,140,257		$	—		$	9,303
Loans that Meet Definition of Impaired Loan	As of December 31, 2014, the Company’s impaired loans consist of certain loans, including all TDRs. The following tables summarizes, by class of loan, information related to impaired loans as of December 31, 2014 and December 31, 2013:
	(Dollars in thousands)		Recorded			Unpaid			Related			Average			Interest
			Investment			Principal			Allowance			Recorded			Income
						Balance						Investment			Recognized
	December 31, 2014:
	With no related allowance recorded:
	Real estate:
	Conventional		$	5,447		$	6,028		$	—		$	5,735		$	342
	Home equity			181			264			—			232			5
	Commercial			7,383			8,151			—			8,093			379
	Construction			1,163			1,185			—			1,233			53
	Commercial and municipal			880			1,204			—			1,118			77
	Total impaired with no related allowance		$	15,054		$	16,832		$	—		$	16,411		$	856
	With an allowance recorded:
	Real estate:
	Conventional		$	337		$	370		$	50		$	546		$	17
	Commercial			727			727			17			1,539			32
	Commercial and municipal			—			—			—			350			—
	Total impaired with an allowance recorded		$	1,064		$	1,097		$	67		$	2,435		$	49
	Total
	Real estate:
	Conventional		$	5,784		$	6,398		$	50		$	6,281		$	359
	Home equity			181			264			—			232			5
	Commercial			8,110			8,878			17			9,632			411
	Construction			1,163			1,185			—			1,233			53
	Commercial and municipal			880			1,204			—			1,468			77
	Total impaired loans		$	16,118		$	17,929		$	67		$	18,846		$	905
	(Dollars in thousands)		Recorded			Unpaid			Related			Average			Interest
			Investment			Principal			Allowance			Recorded			Income
						Balance						Investment			Recognized
	December 31, 2013:
	With no related allowance recorded:
	Real estate:
	Conventional		$	6,084		$	7,029		$	—		$	5,387		$	261
	Home equity			153			312			—			104			9
	Commercial			9,807			10,432			—			10,832			534
	Construction			1,494			1,515			—			1,749			69
	Commercial and municipal			1,099			1,141			—			728			65
	Total impaired with no related allowance		$	18,637		$	20,429		$	—		$	18,800		$	938
	With an allowance recorded:
	Real estate:
	Conventional		$	479		$	512		$	71		$	618		$	23
	Home equity			—			—			—			—			—
	Commercial			1,556			1,556			116			1,622			105
	Construction			—			—			—			—			—
	Commercial and municipal			483			483			10			527			24
	Total impaired with an allowance recorded		$	2,518		$	2,551		$	197		$	2,767		$	152
	Total
	Real estate:
	Conventional		$	6,563		$	7,541		$	71		$	6,005		$	284
	Home equity			153			312			—			104			9
	Commercial			11,363			11,988			116			12,454			639
	Construction			1,494			1,515			—			1,749			69
	Commercial and municipal			1,582			1,624			10			1,255			89
	Total impaired loans		$	21,155		$	22,980		$	197		$	21,567		$	1,090
Troubled Debt Restructurings on Financing Receivables	The following table presents modified loans by class that were determined to be TDRs that occurred during the years ended December 31:
	(Dollars in thousands)		Number of			Pre-Modification			Post-Modification
			Contracts			Outstanding Recorded			Outstanding Recorded
						Investment			Investment
	December 31, 2014:
	Troubled Debt Restructurings:
	Real estate:
	Conventional			16		$	1,257		$	1,257
	Commercial			4			991			991
	Construction			1			95			95
	Commercial and municipal			1			35			35
				22		$	2,378		$	2,378
	There were no loans modified as TDRs that defaulted during the year ended December 31, 2014.
	(Dollars in thousands)		Number of			Pre-Modification			Post-Modification
			Contracts			Outstanding Recorded			Outstanding Recorded
						Investment			Investment
	December 31, 2013:
	Troubled Debt Restructurings:
	Real estate:
	Conventional			15		$	2,680		$	2,680
	Commercial			5			3,018			3,018
	Construction			3			700			700
	Commercial and municipal			5			560			560
				28		$	6,958		$	6,958
	(Dollars in thousands)		Number of			Recorded Investment
			Contracts
	Troubled Debt Restructurings that Subsequently Defaulted:
	Conventional			4		$	541
	Construction			1			23
				5		$	564
Pre-Modification Balance Information on how Loans were Modified as TDRs	The following tables present information on how loans were modified as TDRs during the years ended December 31:
	(Dollars in thousands)		Extended			Combination of			Combination of			Combination of			Other (a)			Total
			Maturity			Payments, Rate			Interest Only			Interest Rate,
						And Maturity			Payments and			Maturity and
									Maturity			Reamortized
	December 31, 2014:
	Real estate:
	Conventional		$	—		$	516		$	619		$	122		$	—		$	1,257
	Commercial			211			210			—			—			570			991
	Construction			—			—			95			—			—			95
	Commercial and municipal			—			—			—			—			35			35
	Total TDRs		$	211		$	726		$	714		$	122		$	605		$	2,378
	(Dollars in thousands)		Extended			Combination of			Interest Only			Combination of			Other (a)			Total
			Maturity			Payments, Rate			Payments and			Interest Rate,
						And Maturity			Maturity			Maturity and
												Reamortized
	December 31, 2013:
	Real estate:
	Conventional		$	—		$	996		$	1,273		$	219		$	192		$	2,680
	Commercial			764			1,143			1,111			—			—			3,018
	Construction			700			—			—			—			—			700
	Commercial and municipal			—			—			524			—			36			560
	Total TDRs		$	1,464		$	2,139		$	2,908		$	219		$	228		$	6,958
	(a)	Other includes covenant modifications, forbearance and/or other modifications.
Company's Loans by Risk Ratings	The following tables present the Company’s loans by risk rating as of December 31:
			Real Estate:
			Conventional and									Commercial
	(Dollars in thousands)		Home Equity			Commercial			Construction			and Municipal			Consumer			Total
	December 31, 2014:
	Originated
	Grade:
	Pass		$	—		$	205,158		$	19,798		$	99,705		$	—		$	324,661
	Special mention			—			2,952			35			850			—			3,837
	Substandard			4,790			11,944			2,384			359			—			19,477
	Loans not formally rated			650,772			15,586			12,771			24,247			7,438			710,814
	Total		$	655,562		$	235,640		$	34,988		$	125,161		$	7,438		$	1,058,789
	Acquired
	Grade:
	Pass		$	—		$	64,441		$	924		$	10,676		$	—		$	76,041
	Special mention			—			5,600			—			401			—			6,001
	Substandard			863			5,693			389			1,811			—			8,756
	Loans not formally rated			58,468			1,643			144			526			1,712			62,493
	Total		$	59,331		$	77,377		$	1,457		$	13,414		$	1,712		$	153,291
	(Dollars in thousands)
	December 31, 2013:
	Originated
	Grade:
	Pass		$	—		$	164,554		$	13,337		$	98,469		$	—		$	276,360
	Special mention			—			3,885			812			674			—			5,371
	Substandard			5,708			12,373			1,880			1,193			—			21,154
	Loans not formally rated			594,616			17,929			10,033			20,920			6,829			650,327
	Total		$	600,324		$	198,741		$	26,062		$	121,256		$	6,829		$	953,212
	Acquired
	Grade:
	Pass		$	—		$	80,730		$	2,148		$	16,577		$	—		$	99,455
	Special mention			—			1,341			—			—			—			1,341
	Substandard			1,521			5,518			228			1,876			—			9,143
	Loans not formally rated			70,989			1,483			1,284			362			2,988			77,106
	Total		$	72,510		$	89,072		$	3,660		$	18,815		$	2,988		$	187,045
Amount of Loans Sold and Participated	The amount of loans sold and participated out which are serviced by the Company are as follows as of December 31:
	(Dollars in thousands)		2014			2013
	Sold loans		$	411,583		$	417,274
	Participation loans		$	31,147		$	30,022
Analysis of Aggregate Changes in Valuation Allowances for Capitalized Servicing Rights	Following is an analysis of the aggregate changes in the valuation allowances for capitalized servicing rights:
	(Dollars in thousands)		2014			2013
	Balance, beginning of year		$	65		$	69
	Additions			4			155
	Reductions			(50	)		(159	)
	Balance, end of year		$	19		$	65
Central Financial Corporation
Summary of Credit Impaired Loans Acquired through Merger	The following table presents a summary of credit impaired loans acquired through the merger with Central Financial Corporation as of the dates indicated:
	December 31, 2014
	(Dollars in thousands)		Commercial			Conventional
			Real Estate and			Real Estate
			Commercial
			and Municipal
	Contractually required payments receivable		$	983		$	800
	Nonaccretable difference			—			—
	Cash flows expected to be collected			983			800
	Accretable yield			—			—
	Fair value of purchased credit impaired loans acquired		$	983		$	800
	December 31, 2013
	(Dollars in thousands)		Commercial			Conventional
			Real Estate and			Real Estate
			Commercial
			and Municipal
	Contractually required payments receivable		$	1,604		$	984
	Nonaccretable difference			—			—
	Cash flows expected to be collected			1,604			984
	Accretable yield			—			—
	Fair value of purchased credit impaired loans acquired		$	1,604		$	984
Nashua Bank
Summary of Credit Impaired Loans Acquired through Merger	The following table presents a summary of credit impaired loans acquired through the merger with The Nashua Bank as of the dates indicated:
	December 31, 2014
	(Dollars in thousands)		Commercial
			Real Estate and
			Commercial
			and Municipal
	Contractually required payments receivable		$	971
	Nonaccretable difference			—
	Cash flows expected to be collected			971
	Accretable yield			—
	Fair value of purchased credit impaired loans acquired		$	971
	December 31, 2013
	(Dollars in thousands)		Commercial
			Real Estate and
			Commercial
			and Municipal
	Contractually required payments receivable		$	1,012
	Nonaccretable difference			—
	Cash flows expected to be collected			1,012
	Accretable yield			—
	Fair value of purchased credit impaired loans acquired		$	1,012

Premises_and_equipment_Tables

Premises and equipment (Tables)	31 Months Ended
	Dec. 31, 2014
Premises and Equipment	Premises and equipment are shown on the consolidated balance sheets at cost, net of accumulated depreciation, as follows as of December 31:
	(Dollars in thousands)	2014		2013
	Land and land improvements	$	3,235	$	3,235
	Buildings and premises		26,638		25,653
	Furniture, fixtures and equipment		14,121		12,566
			43,994		41,454
	Less—accumulated depreciation		19,603		17,612
		$	24,391	$	23,842

Investment_in_real_estate_Tabl

Investment in real estate (Tables)	31 Months Ended
	Dec. 31, 2014
Investment in Real Estate	The balance in investment in real estate consisted of the following as of December 31:
	(Dollars in thousands)	2014		2013
	Land and land improvements	$	412	$	412
	Buildings and premises		4,163		4,163
			4,575		4,575
	Less—accumulated depreciation		1,042		894
		$	3,533	$	3,681

Deposits_Tables

Deposits (Tables)	31 Months Ended
	Dec. 31, 2014
Deposits	Deposits are summarized as follows as of December 31:
	(Dollars in thousands)	2014		2013
	Demand deposits	$	117,889	$	101,446
	Savings		233,697		218,100
	N.O.W.		333,984		303,054
	Money market		103,817		104,755
	Time deposits		363,327		360,737
		$	1,152,714	$	1,088,092
Maturities of Time Deposits	The following is a summary of maturities of time deposits as of December 31, 2014:
	(Dollars in thousands)
	2015	$	235,110
	2016		60,847
	2017		30,789
	2018		20,099
	2019		16,482
	Total	$	363,327
Interest Expense by Major Category of Interest Bearing Deposits	Interest expense by major category of interest-bearing deposits is summarized as follows for the years ended December 31:
	(Dollars in thousands)	2014		2013		2012
	Time deposits	$	3,635	$	3,283	$	3,762
	N.O.W.		259		248		209
	Money market		314		297		137
	Savings		256		227		273
		$	4,464	$	4,055	$	4,381

Federal_Home_Loan_Bank_Advance1

Federal Home Loan Bank Advances and Letters of Credit (Tables)	31 Months Ended
	Dec. 31, 2014
Advances of Federal Home Loan Bank Redeemable at Par at Option of Federal Home Loan Bank	As of December 31, 2014, the following advances from the FHLB were redeemable at par at the option of the FHLB (dollars in thousands):
	MATURITY DATE	OPTIONAL REDEMPTION DATE		AMOUNT
	April 30, 2018	January 28, 2015 and quarterly thereafter		$	10,000
	October 24, 2018	24-Oct-15		$	10,000
	October 24, 2018	24-Oct-15		$	10,000
Federal Home Loan Bank Advances
Maturities of Advances from FHLB	Maturities of advances from the FHLB for the years ending after December 31, 2014 are summarized as follows:
	(Dollars in thousands)
	2015	$	95,992
	2016		15,000
	2018		30,000
		$	140,992

Income_taxes_Tables

Income taxes (Tables)	31 Months Ended
	Dec. 31, 2014
Components of Income Tax Expense	The components of income tax expense are as follows for the years ended December 31:
	(Dollars in thousands)	2014			2013			2012
	Current tax expense	$	2,410		$	2,535		$	3,205
	Deferred tax expense		1,154			592			479
	Total income tax expense	$	3,564		$	3,127		$	3,684
Schedule of Effective Income Tax Rate Reconciliation	The reasons for the differences between the tax at the statutory federal income tax rate and the effective tax rates are summarized as follows for the years ended December 31:
		2014			2013			2012
		% of			% of			% of
		Income			Income			Income
	Federal income tax at statutory rate		34	%		34	%		34
	Increase (decrease) in tax resulting from:
	Tax-exempt income		(5.7	)		(6.8	)		(5.5	)
	Dividends received deduction		(0.1	)		(1.0	)		(1.2	)
	Federal tax credits		(2.4	)		(0.3	)		(0.3	)
	Merger related expenses		—			2.3			2.2
	Other, net		0.4			(1.1	)		3
	Effective tax rates		26.2	%		27.1	%		32.2	%
Schedule of Deferred Tax Assets and Liabilities	The Company had gross deferred tax assets and gross deferred tax liabilities as follows as of December 31:
	(Dollars in thousands)	2014			2013
	Deferred tax assets:
	Interest on non-performing loans	$	216		$	134
	Allowance for loan losses		3,203			3,505
	Deferred compensation		804			1,150
	Deferred retirement expense		1,478			1,330
	Restricted stock awards		37			26
	Accrued directors fees		16			21
	Accrued group health contingency		12			32
	Write-down of securities		—			48
	Net unrealized loss on available-for-sale securities		224			784
	Unrecognized employee benefits under ASC 715-10		1,966			1,113
	Other		275			—
	Gross deferred tax assets		8,231			8,143
	Deferred tax liabilities:
	Deferred loan costs, net of fees		(1,621	)		(1,485	)
	Prepaid pension		(1,662	)		(1,643	)
	Accelerated depreciation		(805	)		(721	)
	Purchased goodwill		(3,729	)		(3,447	)
	Mortgage servicing rights		(864	)		(1,002	)
	Core deposit intangibles and other market value adjustments		(2,313	)		(1,984	)
	Other		(259	)		(168	)
	Gross deferred tax liabilities		(11,253	)		(10,450	)
	Net deferred tax liability	$	(3,022	)	$	(2,307	)

Stock_compensation_plans_Table

Stock compensation plans (Tables)	31 Months Ended
	Dec. 31, 2014
Summary of Options Issued Pursuant to the Plans	A summary of the options issued pursuant to the Plans as of December 31, 2014, 2013 and 2012 and changes during the years ending on those dates is presented below:
		2014					2013					2012
					Weighted-Average					Weighted-Average					Weighted-Average
		Shares			Exercise Price		Shares			Exercise Price		Shares			Exercise Price
	Outstanding at beginning of year		123,000		$	13.38		245,000		$	13.23		304,042		$	12.66
	Forfeited		(2,500	)		13.25		(18,600	)		13.15		(19,000	)		12.74
	Exercised		(7,000	)		13.25		(103,400	)		13.07		(40,042	)		9.13
	Outstanding at end of year		113,500		$	13.39		123,000		$	13.38		245,000		$	13.23
	Options exercisable at year-end		113,500					123,000					245,000
	Weighted-average fair value of options granted during the year		—					—					—
Fixed Stock Options Outstanding	The following table summarizes information about fixed stock options outstanding as of December 31, 2014:
	Options Outstanding and Exercisable
		Number			Remaining
	Exercise Price	Outstanding			Contractual Life
	$13.25		106,000			0.9 years
	15.3		7,500			1.1 years
	$13.39		113,500			0.9 years

Employee_benefit_plans_Tables

Employee benefit plans (Tables)	31 Months Ended
	Dec. 31, 2014
Schedule of Changes in Projected Benefit Obligation and Plan Assets	The following tables set forth information about the plan for the years ended December 31, 2014, 2013 and 2012:
	(Dollars in thousands)		2014			2013			2012
	Change in projected benefit obligation:
	Benefit obligation at beginning of year		$	6,961		$	7,507		$	6,560
	Interest cost			341			332			338
	Actuarial loss (gain)			2,069			(648	)		838
	Benefits paid			(247	)		(220	)		(229	)
	Settlements			(150	)		(10	)		—
	Benefit obligation at end of year			8,974			6,961			7,507
	Change in plan assets:
	Plan assets at estimated fair value at beginning of year			8,186			7,361			6,828
	Actual return on plan assets			390			1,055			756
	Benefits paid			(247	)		(220	)		(229	)
	Settlements			(150	)		(10	)		—
	Contributions			—			—			6
	Fair value of plan assets at end of year			8,179			8,186			7,361
	Funded status		$	(795	)	$	1,225		$	(146	)
Components of Net Periodic Cost and Other Comprehensive Loss (Income)	Components of net periodic (benefit) cost and other comprehensive loss (income) for the years ended December 31:
	(Dollars in thousands)		2014			2013			2012
	Interest cost on benefit obligation		$	341		$	332		$	338
	Expected return on assets			(646	)		(579	)		(536	)
	Amortization of unrecognized actuarial loss			173			303			258
	Net periodic (benefit) cost			(132	)		56			60
	Other changes in plan assets and benefit obligations recognized as other comprehensive loss (income), before tax effect:
	Actuarial loss (gain)			2,325			(1,124	)		618
	Amortization of unrecognized actuarial loss			(173	)		(303	)		(258	)
	Total recognized as other comprehensive loss (income)			2,152			(1,427	)		360
	Total recognized as net periodic (benefit) cost and other comprehensive loss (income)		$	2,020		$	(1,371	)	$	420
Assumptions Used to Determine Net Periodic Pension Cost	For the years ended December 31, 2014, 2013 and 2012, the assumptions used to determine the net period pension cost are as follows:
			2014			2013			2012
	Discount rate			5	%		4.5	%		5.25	%
	Increase in future compensation levels			—			—			—
	Expected long-term rate of return on plan assets			8			8			8
Pension Plan Assets Measured at Fair Value by Asset Category	The Company’s pension plan assets measured at fair value at December 31, 2014, by asset category, are as follows:
			Fair Value Measurements at Reporting Date Using:
	Asset Category		Total			Quoted Prices in			Significant			Significant
						Active Markets for			Other Observable			Unobservable
						Identical Assets			Inputs			Inputs
						Level 1			Level 2			Level 3
	(Dollars in thousands)
	December 31, 2014:
	U.S. equity securities		$	868		$	473		$	395		$	—
	Registered investment companies (a)			7,271			7,271			—			—
	Money market			40			40			—			—
	Totals		$	8,179		$	7,784		$	395		$	—
	(a)	Includes 52% invested in fixed income funds and 48% invested in equity and index funds.
	The Company’s pension plan assets measured at fair value at December 31, 2013, by asset category, are as follows:
			Fair Value Measurements at Reporting Date Using:
	Asset Category		Total			Quoted Prices in			Significant			Significant
						Active Markets for			Other Observable			Unobservable
						Identical Assets			Inputs			Inputs
						Level 1			Level 2			Level 3
	(Dollars in thousands)
	December 31, 2013:
	U.S. equity securities		$	857		$	462		$	395		$	—
	Registered investment companies (a)			7,184			7,184			—			—
	Money market			145			145			—			—
	Totals		$	8,186		$	7,791		$	395		$	—
	(a)	Includes 53% invested in fixed income funds and 47% invested in equity and index funds.
	To maximize the ability of achieving the Company’s overall goals for the plan’s assets and to provide the required level of income each year, the allocation between common stocks, bonds and cash equivalents shall adhere to the following target allocation based on market value:
			Target Allocation
	Equities			38-58	%
	Fixed income			42-62	%
Estimated Future Benefit Payments	Estimated future benefit payments, which reflect expected future service, as appropriate, are as follows:
	(Dollars in thousands)
	2015		$	345
	2016			346
	2017			374
	2018			391
	2019			412
	Years 2020-2024			2,348

Commitments_and_contingencies_

Commitments and contingencies (Tables)	31 Months Ended
	Dec. 31, 2014
Minimum Rent Commitments Due in Future Periods	The total minimum rent commitments due in future periods under these existing agreements are as follows as of December 31, 2014:
	(Dollars in thousands)
	2015	$	655
	2016		562
	2017		463
	2018		403
	2019		341
	Thereafter		590
	Total minimum lease payments	$	3,014

Fair_value_measurements_Tables

Fair value measurements (Tables)	31 Months Ended
	Dec. 31, 2014
Assets Measured at Fair Value on Recurring Basis	The following summarizes assets measured at fair value on a recurring basis as of December 31, 2014 and 2013.
		Fair Value Measurements at Reporting Date Using:
	(Dollars in thousands)	Total		Quoted Prices in		Significant		Significant
				Active Markets for		Other Observable		Unobservable
				Identical Assets		Inputs		Inputs
				Level 1		Level 2		Level 3
	December 31, 2014:
	U.S. Treasury notes	$	40,123	$	—	$	40,123	$	—
	Government-sponsored enterprise bonds		7,265		—		7,265		—
	Mortgage-backed securities		58,280		—		58,280		—
	Municipal bonds		9,596		—		9,596		—
	Other bonds and debentures		126		—		126		—
	Equity securities		308		308		—		—
	Totals	$	115,698	$	308	$	115,390	$	—
	December 31, 2013:
	U.S. Treasury notes	$	50,016	$	—	$	50,016	$	—
	Government-sponsored enterprise bonds		7,160		—		7,160		—
	Mortgage-backed securities		46,647		—		46,647		—
	Municipal bonds		20,106		—		20,106		—
	Other bonds and debentures		275		—		275		—
	Equity securities		1,034		1,034		—		—
	Totals	$	125,238	$	1,034	$	124,204	$	—
Financial Instruments Measured at Fair Value on Non-recurring Basis	The following table presents the assets carried on the consolidated balance sheet by caption and by level in the fair value hierarchy at December 31, 2014 and 2013 for which a nonrecurring change in fair value has been recorded:
		Fair Value Measurements at Reporting Date Using:
	(Dollars in thousands)	Total		Quoted Prices in		Significant		Significant
				Active Markets for		Other Observable		Unobservable
				Identical Assets		Inputs		Inputs
				Level 1		Level 2		Level 3
	December 31, 2014:
	Impaired loans	$	997	$	—	$	—	$	997
	Other real estate owned		251		—		—		251
	Totals	$	1,248	$	—	$	—	$	1,248
	December 31, 2013:
	Impaired loans	$	2,321	$	—	$	—	$	2,321
	Other real estate owned		1,343		—		—		1,343
	Totals	$	3,664	$	—	$	—	$	3,664
Estimated Fair Values of Company's Financial Instruments	The estimated fair values of the Company’s financial instruments, all of which are held or issued for purposes other than trading, were as follows as of December 31:
		December 31, 2014
		Carrying		Fair Value
	(Dollars in thousands)	Amount		Level 1		Level 2		Level 3		Total
	Financial assets:
	Cash and cash equivalents	$	51,120	$	51,120	$	—	$	—	$	51,120
	Interest-bearing time deposits with other banks		747		—		747		—		747
	Securities available-for-sale		115,698		308		115,390		—		115,698
	Federal Home Loan Bank stock		10,762		10,762		—		—		10,762
	Loans held-for-sale		2,000		—		2,029		—		2,029
	Loans, net		1,206,845		—		—		1,205,578		1,205,578
	Investment in unconsolidated subsidiaries		620		—		—		400		400
	Accrued interest receivable		2,576		2,576		—		—		2,576
	Financial liabilities:
	Deposits		1,152,714		—		1,154,466		—		1,154,466
	FHLB advances		140,992		—		141,746		—		141,746
	Securities sold under agreements to repurchase		16,756		16,756		—		—		16,756
	Subordinated debentures		37,620		—		—		29,909		29,909
		31-Dec-13
		Carrying		Fair Value
	(Dollars in thousands)	Amount		Level 1		Level 2		Level 3		Total
	Financial assets:
	Cash and cash equivalents	$	33,578	$	33,578	$	—	$	—	$	33,578
	Interest-bearing time deposits with other banks		1,743		—		1,743		—		1,743
	Securities available-for-sale		125,238		1,034		124,204		—		125,238
	Federal Home Loan Bank stock		9,760		9,760		—		—		9,760
	Loans held-for-sale		680		—		683		—		683
	Loans, net		1,134,110		—		—		1,136,761		1,136,761
	Investment in unconsolidated subsidiaries		620		—		—		587		587
	Accrued interest receivable		2,628		2,628		—		—		2,628
	Financial liabilities:
	Deposits		1,088,092		—		1,091,419		—		1,091,419
	FHLB advances		121,734		—		123,166		—		123,166
	Securities sold under agreements to repurchase		27,885		27,885		—		—		27,885
	Subordinated debentures		20,620		—		—		19,519		19,519

Acquisitions_Tables

Acquisitions (Tables)	31 Months Ended
	Dec. 31, 2014
Fair Values of Assets Acquired and Liabilities	A summary of the fair values of assets acquired and liabilities assumed at the date of the acquisitions is as follows:
		Central Financial		Charter Holding
	(Dollars in thousands)	Corporation		Corporation
	Cash and due from banks	$	17,512	$	3,095
	Interest-bearing time deposits with other banks		1,992
	Federal Home Loan Bank stock		467		—
	Securities available-for-sale		6,494		633
	Loans, net		127,721		—
	Other real estate owned		1,477		—
	Premises and equipment		2,532		1,365
	Other assets and accrued interest receivable		1,669		1,411
	Total assets acquired		159,864		6,504
	Total deposits		149,684		—
	Securities sold under agreements to repurchase		2,602		—
	Accrued expenses and other liabilities		791		2,706
	Total liabilities assumed		153,077		2,706
	Net assets acquired		6,787		3,798
	Goodwill		4,630		4,566
	Core deposit intangible asset		4,568		—
	Customer list intangible asset		—		4,036
	Total purchase price	$	15,985	$	12,400
	A summary of the fair values of assets acquired and liabilities assumed at the date of the acquisition is as follows:
	(Dollars in thousands)	The Nashua Bank
	Cash and due from banks	$	2,790
	Federal Home Loan Bank stock		383
	Securities available-for-sale		20,852
	Loans, net		88,203
	Premises and equipment		729
	Investment in real estate		249
	Other assets and accrued interest receivable		470
	Total assets acquired		113,676
	Total deposits		98,479
	FHLB advances		1,754
	Accrued expenses and other liabilities		897
	Total liabilities assumed		101,130
	Net assets acquired		12,546
	Goodwill		6,746
	Core deposit intangible asset		2,086
	Total purchase price	$	21,378
Proforma Information Assumptions of Acquisition	The following pro forma information assumes that the acquisitions had occurred at the beginning of each of the periods presented.
	(Dollars in thousands, except per share data)	2013		2012
	Total revenue	$	65,880	$	67,299
	Net income	$	10,219	$	9,345
	Net income available to common shareholders	$	9,903	$	8,649
	Earnings per share:
	Basic	$	1.21	$	1.05
	Diluted	$	1.21	$	1.05

Earnings_per_share_EPS_Tables

Earnings per share (EPS) (Tables)	31 Months Ended
	Dec. 31, 2014
Basic and Diluted Net Income Per Common Share	Reconciliation of the numerators and the denominators of the basic and diluted per share computations for net income are as follows:
		Income			Shares		Per-Share
	(Dollars in thousands, except for per share data):	(Numerator)			(Denominator)		Amount
	Year ended December 31, 2014
	Basic EPS
	Net income as reported	$	10,040
	Preferred stock dividend earned		(230	)
	Net income available to common stockholders		9,810			8,235,213	$	1.19
	Effect of dilutive securities, options		—			11,315
	Diluted EPS
	Income available to common stockholders and assumed conversions	$	9,810			8,246,528	$	1.19
	Year ended December 31, 2013
	Basic EPS
	Net income as reported	$	8,414
	Preferred stock dividend earned		(316	)
	Net income available to common stockholders		8,098			7,294,916	$	1.11
	Effect of dilutive securities, options		—			6,945
	Diluted EPS
	Income available to common stockholders and assumed conversions	$	8,098			7,301,861	$	1.11
	Year ended December 31, 2012
	Basic EPS
	Net income as reported	$	7,759
	Preferred stock dividend earned		(666	)
	Net income available to common stockholders		7,093			5,907,113	$	1.2
	Effect of dilutive securities, options		—			4,938
	Diluted EPS
	Income available to common stockholders and assumed conversions	$	7,093			5,912,051	$	1.2

Other_comprehensive_loss_incom1

Other comprehensive (loss) income (Tables)	31 Months Ended
	Dec. 31, 2014
Components of Other Comprehensive Income	The components of other comprehensive loss included in stockholders’ equity are as follows during the years ended December 31:
	(Dollars in thousands)	2014			2013			2012
	Net unrealized holding gains (losses) on available-for-sale securities	$	2,367		$	(2,979	)	$	2,942
	Reclassification adjustment for realized gains in net income		(950	)		(964	)		(3,819	)
	Other comprehensive income (loss) before income tax effect		1,417			(3,943	)		(877	)
	Income tax (expense) benefit		(560	)		1,561			347
			857			(2,382	)		(530	)
	Other comprehensive (loss) income—pension plan (See Note 12)		(2,152	)		1,427			(360	)
	Income tax benefit (expense)		853			(567	)		143
			(1,299	)		860			(217	)
	Change in fair value of derivatives used for cash flow hedges		—			166			302
	Income tax expense		—			(65	)		(120	)
			—			101			182
	Other comprehensive income—equity investment		—			12			8
	Reclassification adjustment for realized gains in net income		—			(44	)		—
	Other comprehensive (loss) income before income tax effect		—			(32	)		8
	Income tax benefit (expense)		—			—			—
			—			(32	)		8
	Other comprehensive loss, net of tax effect	$	(442	)	$	(1,453	)	$	(557	)
Accumulated Other Comprehensive Loss	Accumulated other comprehensive loss consists of the following as of December 31:
	(Dollars in thousands)	2014			2013			2012
	Net unrealized holding (losses) gains on available-for-sale securities, net of taxes	$	(341	)	$	(1,198	)	$	1,184
	Unrecognized net actuarial loss, defined benefit pension plan, net of tax		(2,998	)		(1,699	)		(2,559	)
	Unrecognized net loss, derivative, net of tax		—			—			(101	)
	Unrecognized net income, equity investment, net of tax		—			—			32
	Accumulated other comprehensive loss	$	(3,339	)	$	(2,897	)	$	(1,444	)

Regulatory_matters_Tables

Regulatory matters (Tables)	31 Months Ended
	Dec. 31, 2014
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	As of December 31, 2014, the most recent notification from the Office of the Comptroller of the Currency categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, the Bank must maintain minimum total risk-based, Tier 1 risk-based and Tier 1 leverage ratios as set forth in the table. There are no conditions or events since that notification that management believes have changed the Bank’s category.
														To Be Well
														Capitalized Under
								For Capital						Prompt Corrective
		Actual						Adequacy Purposes						Action Provisions
	(Dollars in thousands)	Amount			Ratio			Amount			Ratio			Amount		Ratio
	As of December 31, 2014:
	Total Capital to Risk Weighted Assets	$	131,597			13.28	%	$	79,283			8	%	$	99,103		10	%
	Tier 1 Capital to Risk Weighted Assets		122,161			12.33			39,641			4			59,462		6
	Tier 1 Capital to Total Assets		122,161			8.43			57,937			4			72,421		5
	As of December 31, 2013:
	Total Capital to Risk Weighted Assets	$	123,556			12.89	%	$	74,876			8	%	$	94,044		10	%
	Tier 1 Capital to Risk Weighted Assets		113,382			11.83			38,337			4			57,506		6
	Tier 1 Capital to Total Assets		113,382			8.29			54,688			4			68,360		5
	The following is a reconcilement of the Bank’s total equity, included in the consolidated balance sheet, to the regulatory capital ratios disclosed in the table above:
		December 31, 2014						December 31, 2013
		Tier 1			Total			Tier 1			Total
	(Dollars in thousands)	Capital			Capital			Capital			Capital
	Total stockholders’ equity	$	172,730		$	172,730		$	166,183		$	166,182
	Accumulated other comprehensive loss		3,339			3,339			2,851			2,982
	Allowable allowance for loan losses		—			9,436			—			10,043
	Goodwill and intangible assets		(53,908	)		(53,908	)		(55,652	)		(55,652	)
	Totals	$	122,161		$	131,597		$	113,382		$	123,555

Financial_instruments_Tables

Financial instruments (Tables)	31 Months Ended
	Dec. 31, 2014
Notional Amounts of Financial Liabilities with Off-Balance Sheet Credit Risk	Notional amounts of financial liabilities with off-balance sheet credit risk are as follows as of December 31:
	(Dollars in thousands)	2014		2013
	Commitments to extend credit	$	25,503	$	20,793
	Letters of credit	$	1,146	$	1,065
	Lines of credit	$	119,901	$	122,031
	Unadvanced portion of construction loans	$	12,560	$	23,320

Goodwill_and_intangible_assets1

Goodwill and intangible assets (Tables)	31 Months Ended
	Dec. 31, 2014
Goodwill and Intangible Assets by Related Acquisition	The following table represents the Company’s goodwill and intangible assets by related acquisition at December 31, 2014:
	(Dollars in thousands)	Goodwill		Intangible		Goodwill and
				Assets		Intangible
						Assets
	Landmark Bank	$	2,472	$	—	$	2,472
	New London Trust		9,668		—		9,668
	First Brandon		7,503		191		7,694
	First Community		7,651		95		7,746
	McCrillis & Eldredge		1,356		398		1,754
	The Nashua Bank		6,786		1,366		8,152
	Charter Holding Corporation		4,760		3,374		8,134
	Central Financial Corporation		4,380		3,908		8,288
	Total	$	44,576	$	9,332	$	53,908
Summary of Acquired Amortizing Intangible Assets	A summary of acquired amortizing intangible assets is as follows:
		Gross				Net
		Carrying		Accumulated		Carrying
	(Dollars in thousands)	Amount		Amortization		Amount
	December 31, 2014:
	Core deposit intangible-First Brandon	$	2,476	$	2,285	$	191
	Core deposit intangible-First Community		992		897		95
	Customer list intangible-McCrillis & Eldredge		629		231		398
	Core deposit intangible—The Nashua Bank		2,086		720		1,366
	Customer list intangible-Charter Holding Corporation		4,036		662		3,374
	Core deposit intangible-Central Financial Corporation		4,568		660		3,908
	Total	$	14,787	$	5,455	$	9,332
	December 31, 2013:
	Core deposit intangible-First Brandon	$	2,476	$	2,131	$	345
	Core deposit intangible-First Community		992		830		162
	Customer list intangible-McCrillis & Eldredge		629		164		465
	Core deposit intangible—The Nashua Bank		2,086		379		1,707
	Customer list intangible-Charter Holding Corporation		4,036		168		3,868
	Core deposit intangible-Central Financial Corporation		4,568		95		4,473
	Total	$	14,787	$	3,767	$	11,020
Estimated Amortization Expense	Estimated amortization expense for each of the five years succeeding 2014 is as follows:
	(Dollars in thousands)
	2015	$	1,510
	2016		1,332
	2017		1,154
	2018		1,007
	2019		892

Operating_Segments_Tables

Operating Segments (Tables)	31 Months Ended
	Dec. 31, 2014
Summary of Operating Segments	A summary of the Company’s operating segments is as follows:
	(Dollars in thousands)	Banking		Wealth		Holding			Eliminations			Total
				Management		Company						Consolidated
	Year Ended December 31, 2014
	Net interest and dividend income (expense)	$	42,757	$	7	$	(835	)	$	—		$	41,929
	Provision for loan losses		905		—		—			—			905
	Non-interest income		10,810		8,416		6,993			(6,993	)		19,226
	Non-interest expense		38,865		7,035		746			—			46,646
	Income before provision for income taxes		13,797		1,388		5,412			(6,993	)		13,604
	Provision for income taxes		3,704		488		(628	)		—			3,564
	Net income	$	10,093	$	900	$	6,040		$	(6,993	)	$	10,040
	Total Assets	$	1,480,357	$	18,325	$	177,837		$	(172,733	)	$	1,503,786

Condensed_parent_company_only_1

Condensed parent company only financial statements (Tables)	31 Months Ended
	Dec. 31, 2014
Condensed Balance Sheets of Parent	CONDENSED BALANCE SHEETS
	(Dollars in thousands)	2014			2013
	ASSETS
	Cash	$	3,079		$	2,589
	Investment in subsidiary, Lake Sunapee Bank		172,730			166,182
	Investment in affiliate, NHTB Capital Trust II		310			310
	Investment in affiliate, NHTB Capital Trust III		310			310
	Deferred expenses		818			218
	Advances to Lake Sunapee Bank		68			28
	Other assets		522			429
	Total assets	$	177,837		$	170,066
	LIABILITIES
	Subordinated debentures	$	37,620		$	20,620
	Other liabilities		381			189
	Total liabilities		38,001			20,809
	STOCKHOLDERS’ EQUITY
	Stockholders’ equity		139,836			149,257
	Total liabilities and stockholders’ equity	$	177,837		$	170,066
Condensed Statements of Income of Parent	CONDENSED STATEMENTS OF INCOME
	(Dollars in thousands)	2014			2013			2012
	Dividends from subsidiary, Lake Sunapee Bank	$	4,000		$	4,000		$	—
	Dividends from subsidiaries, NHTB Capital Trust II and III		20			19			20
	Interest expense on subordinated debentures		855			806			1,027
	Interest expense on other borrowings		—			—			2
	Net operating loss including tax benefit		(118	)		(796	)		(840	)
	Income (loss) before equity in undistributed earnings of subsidiaries		3,047			2,417			(1,849	)
	Equity in undistributed earnings of subsidiaries		6,993			5,997			9,608
	Net income	$	10,040		$	8,414		$	7,759
Condensed Statements of Cash Flows of Parent	CONDENSED STATEMENTS OF CASH FLOWS
	(Dollars in thousands)	2014			2013			2012
	Cash flows from operating activities:
	Net income	$	10,040		$	8,414		$	7,759
	Decrease (increase) in other assets		31			(16	)		1
	Increase (decrease) in accrued interest payable and other liabilities		164			(397	)		345
	(Increase) decrease in taxes receivable		(113	)		(87	)		97
	Deferred tax benefit		(11	)		(11	)		(15	)
	Tax benefit for stock options and awards		(2	)		(30	)		(25	)
	Amortization of deferred expenses relating to issuance of capital securities and subordinated debentures		20			11			11
	Stock award expense		165			103			38
	Equity in undistributed earnings of subsidiaries		(6,993	)		(5,997	)		(9,608	)
	Net cash provided by (used in) operating activities		3,301			1,990			(1,397	)
	Cash flows from investing activities:
	Investment in subsidiary, Lake Sunapee Bank		3			(15,884	)		(10,364	)
	Net change in advances to subsidiary, Lake Sunapee Bank		(40	)		45			(30	)
	Net cash used in investing activities		(37	)		(15,839	)		(10,394	)
	Cash flows from financing activities:
	Proceeds from exercise of stock options		92			514			365
	Assumption of preferred stock		—			—			3,000
	Issuance of subordinated debt, net of issuance costs		16,380
	Issuance of common stock through dividend reinvestment plan contributions		109			202			—
	Redemption of preferred stock		(15,000	)		—			—
	Acquisition of Central Financial Corporation		—			15,985			—
	Acquisition of The Nashua Bank		—			—			14,632
	Purchase of warrants		—			—			(737	)
	Repayment of note payable		—			—			(543	)
	Tax benefit for stock options and awards		2			30			25
	Dividends paid on preferred stock		(230	)		(316	)		(848	)
	Dividends paid on common stock		(4,127	)		(3,684	)		(3,052	)
	Net cash (used in) provided by financing activities		(2,774	)		12,731			12,842
	Net increase (decrease) in cash		490			(1,118	)		1,051
	Cash, beginning of year		2,589			3,707			2,656
	Cash, end of year	$	3,079		$	2,589		$	3,707

Quarterly_Results_of_Operation1

Quarterly Results of Operations (UNAUDITED) (Tables)	31 Months Ended
	Dec. 31, 2014
Quarterly Financial Data	Summarized quarterly financial data for 2014 and 2013 follows:
		(In thousands, except earnings per share)
		2014 Quarters Ended
		March 31		June 30		Sept 30		Dec 31
	Interest and dividend income	$	11,880	$	12,254	$	12,319	$	12,275
	Interest expense		1,627		1,591		1,689		1,892
	Net interest and dividend income		10,253		10,663		10,630		10,383
	Provision for loan losses		—		709		27		169
	Noninterest income		4,382		5,072		4,868		4,904
	Noninterest expense		11,593		11,690		11,458		11,905
	Income before income taxes		3,042		3,336		4,013		3,213
	Income tax expense		899		994		1,309		362
	Net income	$	2,143	$	2,342	$	2,704	$	2,851
	Net income available to common stockholders	$	2,085	$	2,284	$	2,646	$	2,795
	Basic earnings per common share	$	0.25	$	0.28	$	0.32	$	0.34
	Earnings per common share, assuming dilution	$	0.25	$	0.28	$	0.32	$	0.34
		(In thousands, except earnings per share)
		2013 Quarters Ended
		March 31		30-Jun		30-Sep		31-Dec
	Interest and dividend income	$	9,857	$	9,532	$	9,573	$	11,314
	Interest expense		1,709		1,717		1,500		1,571
	Net interest and dividend income		8,148		7,815		8,073		9,743
	Provision for loan losses		414		162		118		268
	Noninterest income		3,180		3,392		4,541		4,575
	Noninterest expense		8,031		8,269		9,509		11,155
	Income before income taxes		2,883		2,776		2,987		2,895
	Income tax expense		831		981		415		900
	Net income	$	2,052	$	1,795	$	2,572	$	1,995
	Net income available to common stockholders	$	1,911	$	1,735	$	2,514	$	1,937
	Basic earnings per common share	$	0.27	$	0.25	$	0.35	$	0.24
	Earnings per common share, assuming dilution	$	0.27	$	0.25	$	0.35	$	0.24

Recovered_Sheet1

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2013	Sep. 03, 2013
	EquityPlan	Segment
	Segment
	Branch
	Building
Summary Of Significant Accounting Policies [Line Items]
Number of branches operated by the subsidiary	36
Restricted cash and due from banks	$11,400,000		$7,300,000
Federal Home Loan Bank stock, par value	$100
Membership Stock Investment Requirement as a percentage of member's Stock Investment Base	0.35%
Ownership percentage in Charter Holding Corp.				50.00%
Investment in real estate, number of buildings the company rents for commercial purpose	3
Derivative designated as hedging, change in fair value threshold, minimum	80.00%
Derivative designated as hedging, change in fair value threshold, maximum	125.00%
Number of reportable segments	2	0
Number of stock-based employee compensation plans	2
Interest Rate Swap
Summary Of Significant Accounting Policies [Line Items]
Number of derivative instruments held	0		0
Stock Compensation Plan
Summary Of Significant Accounting Policies [Line Items]
Number of stock-based employee compensation plans	1
Minimum
Summary Of Significant Accounting Policies [Line Items]
Membership Stock Investment Requirement, Stock Investment Base	10,000
Minimum | Buildings and Premises
Summary Of Significant Accounting Policies [Line Items]
Premises and equipment, estimated useful lives	5 years
Minimum | Furniture, Fixtures and Equipment
Summary Of Significant Accounting Policies [Line Items]
Premises and equipment, estimated useful lives	3 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Membership Stock Investment Requirement, Stock Investment Base	$25,000,000
Maximum | Buildings and Premises
Summary Of Significant Accounting Policies [Line Items]
Premises and equipment, estimated useful lives	40 years
Maximum | Furniture, Fixtures and Equipment
Summary Of Significant Accounting Policies [Line Items]
Premises and equipment, estimated useful lives	15 years
Maximum | Construction Loans
Summary Of Significant Accounting Policies [Line Items]
Loan to value ratio	80.00%
Overnight Advance
Summary Of Significant Accounting Policies [Line Items]
Activity-Based Stock Investment Requirement, percentage	3.00%
Federal Home Loan Bank Borrowings
Summary Of Significant Accounting Policies [Line Items]
Activity-Based Stock Investment Requirement, percentage	4.00%
Federal Home Loan Bank Borrowings | Minimum
Summary Of Significant Accounting Policies [Line Items]
Maturity period	2 days
Federal Home Loan Bank Borrowings | Maximum
Summary Of Significant Accounting Policies [Line Items]
Maturity period	3 months
Other advances
Summary Of Significant Accounting Policies [Line Items]
Activity-Based Stock Investment Requirement, percentage	4.50%
Insurance Agency Customer List
Summary Of Significant Accounting Policies [Line Items]
Remaining useful life of intangible assets	15 years
Trust Company Customer List
Summary Of Significant Accounting Policies [Line Items]
Remaining useful life of intangible assets	15 years
Core Deposits
Summary Of Significant Accounting Policies [Line Items]
Remaining useful life of intangible assets	10 years
Intermediated Derivative Contract
Summary Of Significant Accounting Policies [Line Items]
Percentage of advance commitments	4.50%
Residential Real Estate
Summary Of Significant Accounting Policies [Line Items]
Number of past due dates to place loans on nonaccrual status	90 days
Residential Real Estate | Maximum
Summary Of Significant Accounting Policies [Line Items]
Loan to value ratio	80.00%
Commercial
Summary Of Significant Accounting Policies [Line Items]
Number of past due dates to place loans on nonaccrual status	90 days
Consumer
Summary Of Significant Accounting Policies [Line Items]
Number of past due dates to place loans on nonaccrual status	90 days
Standby Letters of Credit
Summary Of Significant Accounting Policies [Line Items]
Percentage of advance commitments	0.50%

Recovered_Sheet2

Issuance of Capital Securities - Additional Information (Detail) (USD $)	0 Months Ended
	Oct. 29, 2014	Mar. 10, 2014	Mar. 30, 2004
Subordinated Notes
Investments in and Advances to Affiliates [Line Items]
Debt instrument, maturity date	1-Nov-24
Notes issued	$17,000,000
Notes fixed interest rate	6.75%
NHTB Capital Trust II | Capital Securities II
Investments in and Advances to Affiliates [Line Items]
Proceed from sale of capital securities		10,000,000
Capital securities issued, offering costs		160,000
Liquidation amount per capital security			10
NHTB Capital Trust II | Capital Securities II | Three Month Libor Rate Plus
Investments in and Advances to Affiliates [Line Items]
Additional rate on variable interest rate		2.79%
NHTB Capital Trust II | Capital Securities II | Debentures II
Investments in and Advances to Affiliates [Line Items]
Debt instrument, maturity date			30-Mar-34
NHTB Capital Trust III | Capital Securities III
Investments in and Advances to Affiliates [Line Items]
Proceed from sale of capital securities			10,000,000
Capital securities issued, offering costs			160,000
Liquidation amount per capital security			10
Fixed interest rate			6.06%
Capital securities, maturity period			5 years
NHTB Capital Trust III | Capital Securities III | Debentures Three [Member]
Investments in and Advances to Affiliates [Line Items]
Junior subordinate deferrable interest debentures, interest rate			6.06%

Amortized_Cost_of_Securities_A

Amortized Cost of Securities Available-for-Sale and Approximate Fair Values (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	$116,263	$127,220
Gross Unrealized Gains	280	398
Gross Unrealized Losses	845	2,380
Fair Value	115,698	125,238
US Treasury notes
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	40,512	50,683
Gross Unrealized Losses	389	667
Fair Value	40,123	50,016
U.S. Government-sponsored enterprise bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	7,361	7,388
Gross Unrealized Gains	2	4
Gross Unrealized Losses	98	232
Fair Value	7,265	7,160
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	58,439	47,612
Gross Unrealized Gains	112	27
Gross Unrealized Losses	271	992
Fair Value	58,280	46,647
Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	9,579	20,532
Gross Unrealized Gains	103	63
Gross Unrealized Losses	86	489
Fair Value	9,596	20,106
Other bonds and debentures
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	114	263
Gross Unrealized Gains	12	12
Fair Value	126	275
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	258	742
Gross Unrealized Gains	51	292
Gross Unrealized Losses	1
Fair Value	$308	$1,034

Securities_Additional_Informat

Securities - Additional Information (Detail) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Investment [Line Items]
Proceeds from sales of securities available-for-sale									$125,800,000	$125,800,000	$194,300,000
Realized gross gains on sales proceeds									951,000	1,200,000	3,800,000
Realized gross losses on sales proceeds									1,000	222,000	0
Provision for income taxes	362,000	1,309,000	994,000	899,000	900,000	415,000	981,000	831,000	3,564,000	3,127,000	3,684,000
Advances and securities sold under agreements to repurchase	115,100,000				120,100,000				115,100,000	120,100,000
Available-for-sale Securities
Investment [Line Items]
Provision for income taxes									$376,000	$382,000	$1,500,000

Maturities_of_Debt_Securities_

Maturities of Debt Securities Excluding Mortgage-Backed Securities (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Total due in less than one year	$11,020
Total due after one year through five years	41,560
Total due after five years through ten years	3,120
Total due after ten years	1,410
US Treasury notes
Schedule of Available-for-sale Securities [Line Items]
Total due in less than one year	10,075
Total due after one year through five years	30,048
Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Total due in less than one year	945
Total due after one year through five years	4,509
Total due after five years through ten years	2,932
Total due after ten years	1,210
U.S. Government-sponsored enterprise bonds
Schedule of Available-for-sale Securities [Line Items]
Total due after one year through five years	6,906
Total due after five years through ten years	188
Total due after ten years	171
Other bonds and debentures
Schedule of Available-for-sale Securities [Line Items]
Total due after one year through five years	97
Total due after ten years	$29

Aggregate_Fair_Value_and_Unrea

Aggregate Fair Value and Unrealized Losses of Securities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	$22,263	$85,629
Less Than 12 Months, Unrealized Losses	68	1,657
12 Months or Longer, Fair Value	44,318	16,032
12 Months or Longer, Unrealized Losses	777	723
Total Fair Value	66,581	101,661
Total Unrealized Losses	845	2,380
US Treasury notes
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	10,112	29,961
Less Than 12 Months, Unrealized Losses	53	273
12 Months or Longer, Fair Value	20,012	10,056
12 Months or Longer, Unrealized Losses	336	394
Total Fair Value	30,124	40,017
Total Unrealized Losses	389	667
U.S. Government-sponsored enterprise bonds
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value		6,954
Less Than 12 Months, Unrealized Losses		232
12 Months or Longer, Fair Value	7,077
12 Months or Longer, Unrealized Losses	98
Total Fair Value	7,077	6,954
Total Unrealized Losses	98	232
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	12,109	38,574
Less Than 12 Months, Unrealized Losses	14	663
12 Months or Longer, Fair Value	13,675	5,976
12 Months or Longer, Unrealized Losses	257	329
Total Fair Value	25,784	44,550
Total Unrealized Losses	271	992
Municipal bonds
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value		10,140
Less Than 12 Months, Unrealized Losses		489
12 Months or Longer, Fair Value	3,554
12 Months or Longer, Unrealized Losses	86
Total Fair Value	3,554	10,140
Total Unrealized Losses	86	489
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	42
Less Than 12 Months, Unrealized Losses	1
Total Fair Value	42
Total Unrealized Losses	$1

Loans_Receivable_Detail

Loans Receivable (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Real estate loans
Commercial and municipal loans	$138,575	$140,071
Consumer loans	9,150	9,817
Total loans	1,212,080	1,140,257	909,470
Allowance for loan losses	-9,269	-9,757
Deferred loan origination costs, net	4,034	3,610
Loans receivable, net	1,206,845	1,134,110
Conventional
Real estate loans
Total loans	645,690	602,270
Home Equity
Real estate loans
Total loans	69,203	70,564
Commercial
Real estate loans
Total loans	313,017	287,813	234,264
Construction
Real estate loans
Total loans	36,445	29,722	19,412
Mortgage Loans on Real Estate
Real estate loans
Total loans	1,064,355	990,369
Mortgage Loans on Real Estate | Conventional
Real estate loans
Total loans	645,690	602,270
Mortgage Loans on Real Estate | Home Equity
Real estate loans
Total loans	69,203	70,564
Mortgage Loans on Real Estate | Commercial
Real estate loans
Total loans	313,017	287,813
Mortgage Loans on Real Estate | Construction
Real estate loans
Total loans	36,445	29,722
Originated
Real estate loans
Commercial and municipal loans	125,161	121,256
Consumer loans	7,438	6,829
Total loans	1,058,789	953,212
Allowance for loan losses	-9,269	-9,757	-9,923	-9,131
Deferred loan origination costs, net	4,034	3,610
Loans receivable, net	1,053,554	947,065
Originated | Commercial
Real estate loans
Total loans	235,640	198,741
Allowance for loan losses	-2,724	-2,143	-3,616	-3,146
Originated | Construction
Real estate loans
Total loans	34,988	26,062
Allowance for loan losses	-991	-353	-208	-222
Originated | Mortgage Loans on Real Estate
Real estate loans
Total loans	926,190	825,127
Originated | Mortgage Loans on Real Estate | Conventional
Real estate loans
Total loans	592,386	536,588
Originated | Mortgage Loans on Real Estate | Home Equity
Real estate loans
Total loans	63,176	63,736
Originated | Mortgage Loans on Real Estate | Commercial
Real estate loans
Total loans	235,640	198,741
Originated | Mortgage Loans on Real Estate | Construction
Real estate loans
Total loans	34,988	26,062
Acquired
Real estate loans
Commercial and municipal loans	13,414	18,815
Consumer loans	1,712	2,988
Total loans	153,291	187,045
Loans receivable, net	153,291	187,045
Acquired | Commercial
Real estate loans
Total loans	77,377	89,072
Acquired | Construction
Real estate loans
Total loans	1,457	3,660
Acquired | Mortgage Loans on Real Estate
Real estate loans
Total loans	138,165	165,242
Acquired | Mortgage Loans on Real Estate | Conventional
Real estate loans
Total loans	53,304	65,682
Acquired | Mortgage Loans on Real Estate | Home Equity
Real estate loans
Total loans	6,027	6,828
Acquired | Mortgage Loans on Real Estate | Commercial
Real estate loans
Total loans	77,377	89,072
Acquired | Mortgage Loans on Real Estate | Construction
Real estate loans
Total loans	$1,457	$3,660

Loan_Receivable_Additional_Inf

Loan Receivable - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
	Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loan commitments to related parties	$537,000
Principal advances to related parties	516,000
Principal payments collected from related parties	2,900,000
Number of contracts subsequently defaulted	5
TDRs allowance for credit loss	53,000	16,000
Company formally reviews the ratings on all loans	250,000
The balance of capitalized servicing rights, net of valuation allowances, included in other assets	2,400,000	2,700,000
Capitalized servicing rights	518,000	1,600,000	1,400,000
Amortization of capitalized servicing rights	867,000	1,000,000	1,000,000
Fair value of capitalized servicing rights	$4,200,000	$4,100,000
Nonaccrual Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of contracts subsequently defaulted	0	2
Impaired Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of contracts subsequently defaulted	3	1

Information_Regarding_Allowanc

Information Regarding Allowance for Loan Losses by Portfolio Segment (Detail) (USD $)	3 Months Ended							12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Loans:
Acquired loans (Discounts related to Credit Quality)	$153,291			$187,045				$153,291	$187,045	$89,007
Total	1,212,080			1,140,257				1,212,080	1,140,257	909,470
Allowance for loan losses:
Beginning balance								9,757
(Benefit) provision	169	27	709	268	118	162	414	905	962	2,705
Ending balance	9,269			9,757				9,269	9,757
Total allowance for loan losses ending balance	9,269			9,757				9,269	9,757	9,923
Originated
Loans:
Individually evaluated for impairment	16,118			21,155				16,118	21,155	18,881
Collectively evaluated for impairment	1,042,671			932,057				1,042,671	932,057	801,582
Total	1,058,789			953,212				1,058,789	953,212
Allowance for loan losses:
Beginning balance							9,923	9,757	9,923	9,131
Charge-offs								-1,878	-1,976	-2,509
Recoveries								485	847	596
(Benefit) provision								905	963	2,705
Ending balance	9,269			9,757				9,269	9,757	9,923
Individually evaluated for impairment	67			197				67	197	361
Collectively evaluated for impairment	9,202			9,560				9,202	9,560	9,562
Conventional and Home Equity Loan
Loans:
Acquired loans (Discounts related to Credit Quality)	59,331			72,510				59,331	72,510	14,359
Total	714,893			672,834				714,893	672,834	540,740
Allowance for loan losses:
Total allowance for loan losses ending balance	4,763			5,385				4,763	5,385	4,897
Conventional and Home Equity Loan | Originated
Loans:
Individually evaluated for impairment	5,965			6,716				5,965	6,716	6,964
Collectively evaluated for impairment	649,597			593,608				649,597	593,608	519,417
Total	655,562			600,324				655,562	600,324
Allowance for loan losses:
Beginning balance							4,897	5,385	4,897	4,845
Charge-offs								-681	-851	-1,239
Recoveries								314	267	167
(Benefit) provision								-255	1,072	1,124
Ending balance	4,763			5,385				4,763	5,385	4,897
Individually evaluated for impairment	50			71				50	71	232
Collectively evaluated for impairment	4,713			5,314				4,713	5,314	4,665
Commercial
Loans:
Acquired loans (Discounts related to Credit Quality)	77,377			89,072				77,377	89,072	55,690
Total	313,017			287,813				313,017	287,813	234,264
Allowance for loan losses:
Total allowance for loan losses ending balance	2,724			2,143				2,724	2,143	3,616
Commercial | Originated
Loans:
Individually evaluated for impairment	8,110			11,363				8,110	11,363	9,988
Collectively evaluated for impairment	227,530			187,378				227,530	187,378	168,586
Total	235,640			198,741				235,640	198,741
Allowance for loan losses:
Beginning balance							3,616	2,143	3,616	3,146
Charge-offs								-533	-593	-474
Recoveries								1	284	56
(Benefit) provision								1,113	-1,164	888
Ending balance	2,724			2,143				2,724	2,143	3,616
Individually evaluated for impairment	17			116				17	116	129
Collectively evaluated for impairment	2,707			2,027				2,707	2,027	3,487
Construction
Loans:
Acquired loans (Discounts related to Credit Quality)	1,457			3,660				1,457	3,660	4,179
Total	36,445			29,722				36,445	29,722	19,412
Allowance for loan losses:
Total allowance for loan losses ending balance	991			353				991	353	208
Construction | Originated
Loans:
Individually evaluated for impairment	1,163			1,494				1,163	1,494	1,527
Collectively evaluated for impairment	33,825			24,568				33,825	24,568	13,706
Total	34,988			26,062				34,988	26,062
Allowance for loan losses:
Beginning balance							208	353	208	222
Charge-offs										-138
Recoveries										68
(Benefit) provision								638	145	56
Ending balance	991			353				991	353	208
Collectively evaluated for impairment	991			353				991	353	208
Commercial and Municipal
Loans:
Acquired loans (Discounts related to Credit Quality)	13,414			18,815				13,414	18,815	14,070
Total	138,575			140,071				138,575	140,071	107,750
Allowance for loan losses:
Total allowance for loan losses ending balance	635			1,561				635	1,561	918
Commercial and Municipal | Originated
Loans:
Individually evaluated for impairment	880			1,582				880	1,582	402
Collectively evaluated for impairment	124,281			119,674				124,281	119,674	93,278
Total	125,161			121,256				125,161	121,256
Allowance for loan losses:
Beginning balance							918	1,561	918	721
Charge-offs								-445	-302	-438
Recoveries								57	154	142
(Benefit) provision								-538	791	493
Ending balance	635			1,561				635	1,561	918
Individually evaluated for impairment				10					10
Collectively evaluated for impairment	635			1,551				635	1,551	918
Consumer
Loans:
Acquired loans (Discounts related to Credit Quality)	1,712			2,988				1,712	2,988	709
Total	9,150			9,817				9,150	9,817	7,304
Allowance for loan losses:
Total allowance for loan losses ending balance	86			75				86	75	58
Consumer | Originated
Loans:
Collectively evaluated for impairment	7,438			6,829				7,438	6,829	6,595
Total	7,438			6,829				7,438	6,829
Allowance for loan losses:
Beginning balance							58	75	58	58
Charge-offs								-219	-230	-220
Recoveries								113	142	163
(Benefit) provision								117	105	57
Ending balance	86			75				86	75	58
Collectively evaluated for impairment	86			75				86	75	58
Unallocated Financing Receivables
Allowance for loan losses:
Total allowance for loan losses ending balance	70			240				70	240	226
Unallocated Financing Receivables | Originated
Allowance for loan losses:
Beginning balance							226	240	226	139
(Benefit) provision								-170	14	87
Ending balance	70			240				70	240	226
Collectively evaluated for impairment	$70			$240				$70	$240	$226

NonAccrual_Loans_and_PastDue_L

Non-Accrual Loans and Past-Due Loans (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-59 Days	$6,210	$4,823
60-89 Days	3,414	892
90 Days or More Past Due	3,301	3,941
Total Past Due	12,925	9,656
Total Current	1,199,155	1,130,601
Total	1,212,080	1,140,257	909,470
90 Days or More Past Due and Accruing	0	0
Nonaccrual Loans	7,327	9,303
Conventional
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-59 Days	3,546	2,654
60-89 Days	1,399	498
90 Days or More Past Due	1,432	2,812
Total Past Due	6,377	5,964
Total Current	639,313	596,306
Total	645,690	602,270
90 Days or More Past Due and Accruing	0	0
Nonaccrual Loans	2,426	3,821
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-59 Days	2,228	1,859
60-89 Days	1,472	267
90 Days or More Past Due	1,343	903
Total Past Due	5,043	3,029
Total Current	307,974	284,784
Total	313,017	287,813	234,264
90 Days or More Past Due and Accruing	0	0
Nonaccrual Loans	3,926	4,512
Home Equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-59 Days	60	53
60-89 Days	31	57
90 Days or More Past Due	181	52
Total Past Due	272	162
Total Current	68,931	70,402
Total	69,203	70,564
90 Days or More Past Due and Accruing	0	0
Nonaccrual Loans	181	104
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-59 Days		95
60-89 Days	28
90 Days or More Past Due	15
Total Past Due	43	95
Total Current	36,402	29,627
Total	36,445	29,722	19,412
90 Days or More Past Due and Accruing	0	0
Nonaccrual Loans	15	230
Commercial and Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-59 Days	305	133
60-89 Days	463	10
90 Days or More Past Due	330	159
Total Past Due	1,098	302
Total Current	137,477	139,769
Total	138,575	140,071	107,750
90 Days or More Past Due and Accruing	0	0
Nonaccrual Loans	779	621
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-59 Days	71	29
60-89 Days	21	60
90 Days or More Past Due		15
Total Past Due	92	104
Total Current	9,058	9,713
Total	9,150	9,817	7,304
90 Days or More Past Due and Accruing	0	0
Nonaccrual Loans		$15

Summary_of_Class_of_Loan_with_

Summary of Class of Loan with Information Related to Individually Evaluated Impaired Loans within Originated Portfolio (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Impaired [Line Items]
With an allowance recorded, Recorded Investment	$1,064	$2,518
With no related allowance recorded, Recorded Investment	15,054	18,637
With an allowance recorded, Unpaid Principal Balance	1,097	2,551
With no related allowance recorded, Unpaid Principal Balance	16,832	20,429
Related Allowance	67	197
With no related allowance recorded, Average Recorded Investment	16,411	18,800
With an allowance recorded, Average Recorded Investment	2,435	2,767
With no related allowance recorded, Interest Income Recognized	856	938
With an allowance recorded, Interest Income Recognized	49	152
Total Recorded Investment	16,118	21,155
Total Unpaid Principal Balance	17,929	22,980
Total Related Allowance	67	197
Total Average Recorded Investment	18,846	21,567
Total Interest Income Recognized	905	1,090
Conventional
Financing Receivable, Impaired [Line Items]
With an allowance recorded, Recorded Investment	337	479
With no related allowance recorded, Recorded Investment	5,447	6,084
With an allowance recorded, Unpaid Principal Balance	370	512
With no related allowance recorded, Unpaid Principal Balance	6,028	7,029
Related Allowance	50	71
With no related allowance recorded, Average Recorded Investment	5,735	5,387
With an allowance recorded, Average Recorded Investment	546	618
With no related allowance recorded, Interest Income Recognized	342	261
With an allowance recorded, Interest Income Recognized	17	23
Total Recorded Investment	5,784	6,563
Total Unpaid Principal Balance	6,398	7,541
Total Related Allowance	50	71
Total Average Recorded Investment	6,281	6,005
Total Interest Income Recognized	359	284
Home Equity
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	181	153
With no related allowance recorded, Unpaid Principal Balance	264	312
With no related allowance recorded, Average Recorded Investment	232	104
With no related allowance recorded, Interest Income Recognized	5	9
Total Recorded Investment	181	153
Total Unpaid Principal Balance	264	312
Total Average Recorded Investment	232	104
Total Interest Income Recognized	5	9
Commercial
Financing Receivable, Impaired [Line Items]
With an allowance recorded, Recorded Investment	727	1,556
With no related allowance recorded, Recorded Investment	7,383	9,807
With an allowance recorded, Unpaid Principal Balance	727	1,556
With no related allowance recorded, Unpaid Principal Balance	8,151	10,432
Related Allowance	17	116
With no related allowance recorded, Average Recorded Investment	8,093	10,832
With an allowance recorded, Average Recorded Investment	1,539	1,622
With no related allowance recorded, Interest Income Recognized	379	534
With an allowance recorded, Interest Income Recognized	32	105
Total Recorded Investment	8,110	11,363
Total Unpaid Principal Balance	8,878	11,988
Total Related Allowance	17	116
Total Average Recorded Investment	9,632	12,454
Total Interest Income Recognized	411	639
Construction
Financing Receivable, Impaired [Line Items]
With no related allowance recorded, Recorded Investment	1,163	1,494
With no related allowance recorded, Unpaid Principal Balance	1,185	1,515
With no related allowance recorded, Average Recorded Investment	1,233	1,749
With no related allowance recorded, Interest Income Recognized	53	69
Total Recorded Investment	1,163	1,494
Total Unpaid Principal Balance	1,185	1,515
Total Average Recorded Investment	1,233	1,749
Total Interest Income Recognized	53	69
Commercial and Municipal
Financing Receivable, Impaired [Line Items]
With an allowance recorded, Recorded Investment		483
With no related allowance recorded, Recorded Investment	880	1,099
With an allowance recorded, Unpaid Principal Balance		483
With no related allowance recorded, Unpaid Principal Balance	1,204	1,141
Related Allowance		10
With no related allowance recorded, Average Recorded Investment	1,118	728
With an allowance recorded, Average Recorded Investment	350	527
With no related allowance recorded, Interest Income Recognized	77	65
With an allowance recorded, Interest Income Recognized		24
Total Recorded Investment	880	1,582
Total Unpaid Principal Balance	1,204	1,624
Total Related Allowance		10
Total Average Recorded Investment	1,468	1,255
Total Interest Income Recognized	$77	$89

Summary_of_Credit_Impaired_Loa

Summary of Credit Impaired Loans Acquired through Merger (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Nashua Bank | Commercial Real Estate and Commercial and Municipal
Financing Receivable, Impaired [Line Items]
Contractually required payments receivable	$971	$1,012
Nonaccretable difference	0	0
Cash flows expected to be collected	971	1,012
Accretable yield	0	0
Fair value of purchased credit impaired loans acquired	971	1,012
Central Financial Corporation | Commercial Real Estate and Commercial and Municipal
Financing Receivable, Impaired [Line Items]
Contractually required payments receivable	983	1,604
Nonaccretable difference	0	0
Cash flows expected to be collected	983	1,604
Accretable yield	0	0
Fair value of purchased credit impaired loans acquired	983	1,604
Central Financial Corporation | Conventional Real Estate
Financing Receivable, Impaired [Line Items]
Contractually required payments receivable	800	984
Nonaccretable difference	0	0
Cash flows expected to be collected	800	984
Accretable yield	0	0
Fair value of purchased credit impaired loans acquired	$800	$984

Modified_Loans_by_Class_of_Tro

Modified Loans by Class of Troubled Debt Restructuring (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
	Loan	Loan
Financing Receivable, Modifications [Line Items]
Number of contracts	22	28
Pre-Modification outstanding recorded investment	$2,378	$6,958
Post-modification outstanding recorded investment	2,378	6,958
Number of contracts subsequently defaulted	5
Recorded Investment	564
Conventional
Financing Receivable, Modifications [Line Items]
Number of contracts	16	15
Pre-Modification outstanding recorded investment	1,257	2,680
Post-modification outstanding recorded investment	1,257	2,680
Number of contracts subsequently defaulted	4
Recorded Investment	541
Commercial
Financing Receivable, Modifications [Line Items]
Number of contracts	4	5
Pre-Modification outstanding recorded investment	991	3,018
Post-modification outstanding recorded investment	991	3,018
Construction
Financing Receivable, Modifications [Line Items]
Number of contracts	1	3
Pre-Modification outstanding recorded investment	95	700
Post-modification outstanding recorded investment	95	700
Number of contracts subsequently defaulted	1
Recorded Investment	23
Commercial and Municipal
Financing Receivable, Modifications [Line Items]
Number of contracts	1	5
Pre-Modification outstanding recorded investment	35	560
Post-modification outstanding recorded investment	$35	$560

PreModification_Balance_Inform

Pre-Modification Balance Information on how Loans were Modified as TDRs (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Financing Receivable, Modifications [Line Items]
Financing receivable modifications, Extended Maturity	$211		$1,464
Financing receivable modifications, Combination of Payments, Rate And Maturity	726		2,139
Financing receivable modifications, Combination of Interest Only Payments and Maturity	714		2,908
Financing receivable modifications, Combination of Interest Rate, Maturity and Reamortized	122		219
Financing receivable modifications, Other	605	[1]	228	[1]
Financing receivable modifications, Total	2,378		6,958
Conventional
Financing Receivable, Modifications [Line Items]
Financing receivable modifications, Combination of Payments, Rate And Maturity	516		996
Financing receivable modifications, Combination of Interest Only Payments and Maturity	619		1,273
Financing receivable modifications, Combination of Interest Rate, Maturity and Reamortized	122		219
Financing receivable modifications, Other			192	[1]
Financing receivable modifications, Total	1,257		2,680
Commercial
Financing Receivable, Modifications [Line Items]
Financing receivable modifications, Extended Maturity	211		764
Financing receivable modifications, Combination of Payments, Rate And Maturity	210		1,143
Financing receivable modifications, Combination of Interest Only Payments and Maturity			1,111
Financing receivable modifications, Other	570	[1]
Financing receivable modifications, Total	991		3,018
Construction
Financing Receivable, Modifications [Line Items]
Financing receivable modifications, Extended Maturity			700
Financing receivable modifications, Combination of Interest Only Payments and Maturity	95
Financing receivable modifications, Total	95		700
Commercial and Municipal
Financing Receivable, Modifications [Line Items]
Financing receivable modifications, Combination of Interest Only Payments and Maturity			524
Financing receivable modifications, Other	35	[1]	36	[1]
Financing receivable modifications, Total	$35		$560
[1]	Other includes covenant modifications, forbearance and/or other modifications.

Loans_by_Risk_Ratings_Detail

Loans by Risk Ratings (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]
Total loans	$1,212,080	$1,140,257	$909,470
Originated
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,058,789	953,212
Originated | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	324,661	276,360
Originated | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	3,837	5,371
Originated | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	19,477	21,154
Originated | Loans not formally rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	710,814	650,327
Acquired
Financing Receivable, Recorded Investment [Line Items]
Total loans	153,291	187,045
Acquired | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	76,041	99,455
Acquired | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	6,001	1,341
Acquired | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	8,756	9,143
Acquired | Loans not formally rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	62,493	77,106
Conventional and Home Equity Loan
Financing Receivable, Recorded Investment [Line Items]
Total loans	714,893	672,834	540,740
Conventional and Home Equity Loan | Originated
Financing Receivable, Recorded Investment [Line Items]
Total loans	655,562	600,324
Conventional and Home Equity Loan | Originated | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	4,790	5,708
Conventional and Home Equity Loan | Originated | Loans not formally rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	650,772	594,616
Conventional and Home Equity Loan | Acquired
Financing Receivable, Recorded Investment [Line Items]
Total loans	59,331	72,510
Conventional and Home Equity Loan | Acquired | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	863	1,521
Conventional and Home Equity Loan | Acquired | Loans not formally rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	58,468	70,989
Commercial
Financing Receivable, Recorded Investment [Line Items]
Total loans	313,017	287,813	234,264
Commercial | Originated
Financing Receivable, Recorded Investment [Line Items]
Total loans	235,640	198,741
Commercial | Originated | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	205,158	164,554
Commercial | Originated | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,952	3,885
Commercial | Originated | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	11,944	12,373
Commercial | Originated | Loans not formally rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	15,586	17,929
Commercial | Acquired
Financing Receivable, Recorded Investment [Line Items]
Total loans	77,377	89,072
Commercial | Acquired | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	64,441	80,730
Commercial | Acquired | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,600	1,341
Commercial | Acquired | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	5,693	5,518
Commercial | Acquired | Loans not formally rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,643	1,483
Construction
Financing Receivable, Recorded Investment [Line Items]
Total loans	36,445	29,722	19,412
Construction | Originated
Financing Receivable, Recorded Investment [Line Items]
Total loans	34,988	26,062
Construction | Originated | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	19,798	13,337
Construction | Originated | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	35	812
Construction | Originated | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,384	1,880
Construction | Originated | Loans not formally rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	12,771	10,033
Construction | Acquired
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,457	3,660
Construction | Acquired | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	924	2,148
Construction | Acquired | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	389	228
Construction | Acquired | Loans not formally rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	144	1,284
Commercial and Municipal
Financing Receivable, Recorded Investment [Line Items]
Total loans	138,575	140,071	107,750
Commercial and Municipal | Originated
Financing Receivable, Recorded Investment [Line Items]
Total loans	125,161	121,256
Commercial and Municipal | Originated | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	99,705	98,469
Commercial and Municipal | Originated | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	850	674
Commercial and Municipal | Originated | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	359	1,193
Commercial and Municipal | Originated | Loans not formally rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	24,247	20,920
Commercial and Municipal | Acquired
Financing Receivable, Recorded Investment [Line Items]
Total loans	13,414	18,815
Commercial and Municipal | Acquired | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	10,676	16,577
Commercial and Municipal | Acquired | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	401
Commercial and Municipal | Acquired | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,811	1,876
Commercial and Municipal | Acquired | Loans not formally rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	526	362
Consumer
Financing Receivable, Recorded Investment [Line Items]
Total loans	9,150	9,817	7,304
Consumer | Originated
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,438	6,829
Consumer | Originated | Loans not formally rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	7,438	6,829
Consumer | Acquired
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,712	2,988
Consumer | Acquired | Loans not formally rated
Financing Receivable, Recorded Investment [Line Items]
Total loans	$1,712	$2,988

Amount_of_Loans_Sold_and_Parti

Amount of Loans Sold and Participated (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Loans Securitized Sold
Loans Held for Sale [Line Items]
Loans serviced by the company	$411,583	$417,274
Participating Loans
Loans Held for Sale [Line Items]
Loans serviced by the company	$31,147	$30,022

Analysis_of_Aggregate_Changes_

Analysis of Aggregate Changes in Valuation Allowances for Capitalized Servicing Rights (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items]
Beginning balance	$65	$69
Additions	4	155
Reductions	-50	-159
Ending balance	$19	$65

Premises_and_Equipment_Detail

Premises and Equipment (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]
Land and land improvements	$3,235	$3,235
Buildings and premises	26,638	25,653
Furniture, fixtures and equipment	14,121	12,566
Property plant and equipment, Gross	43,994	41,454
Less-Accumulated depreciation	19,603	17,612
Property plant and equipment, Net	$24,391	$23,842

Premises_and_Equipment_Additio

Premises and Equipment - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Depreciation expense	$2.10	$1.50	$1.20

Investment_in_Real_Estate_Deta

Investment in Real Estate (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Real Estate Properties [Line Items]
Land and land improvements	$3,235	$3,235
Investment in real estate	3,533	3,681
Real Estate
Real Estate Properties [Line Items]
Land and land improvements	412	412
Buildings and premises	4,163	4,163
Real Estate Investment Property, at Cost, Total	4,575	4,575
Less-accumulated depreciation	1,042	894
Investment in real estate	$3,533	$3,681

Investment_in_Real_Estate_Addi

Investment in Real Estate - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Real Estate Acquired Through Foreclosure Or Similar Procedures [Line Items]
Rental income from investment in real estate	$308	$309	$283
Depreciation expense on real estate	$148	$153	$129

Deposits_Detail

Deposits (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Deposits [Line Items]
Demand deposits	$117,889	$101,446
Savings	233,697	218,100
N.O.W.	333,984	303,054
Money market	103,817	104,755
Time deposits	363,327	360,737
Total deposits	$1,152,714	$1,088,092

Maturities_of_Time_Deposits_De

Maturities of Time Deposits (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Time Deposits [Line Items]
2015	$235,110
2016	60,847
2017	30,789
2018	20,099
2019	16,482
Total	$363,327	$360,737

Interest_Expense_by_Major_Cate

Interest Expense by Major Category of Interest Bearing Deposits (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule Of Interest Expenses [Line Items]
Time deposits	$3,635	$3,283	$3,762
N.O.W.	259	248	209
Money market	314	297	137
Savings	256	227	273
Total	$4,464	$4,055	$4,381

Deposits_Additional_Informatio

Deposits - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Deposits [Line Items]
Deposits from related parties	$3,700,000	$3,100,000
Time deposits in denomination of $100 thousands or more	144,100,000	157,000,000
Time deposits in denomination of $250 thousands or more	48,400,000
Aggregate amount of brokered time deposits	51,100,000	20,800,000
Aggregate amount of brokered time deposits in denomination of $100 thousands or less	51,100,000
Maximum
Deposits [Line Items]
Deposits insured by FDIC	$250,000

Maturities_of_Advances_from_Fe

Maturities of Advances from Federal Home Loan Advances (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Debt Instrument [Line Items]
2015	$95,992
2016	15,000
2018	30,000
Total	$140,992

Advances_of_Federal_Home_Loan_

Advances of Federal Home Loan Bank Redeemable at Par at Option of Federal Home Loan Bank (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Amount	$140,992	$121,734
Federal Home Loan Bank Advances One
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Maturity date	30-Apr-18
Optional Redemption Date	January 28, 2015 and quarterly thereafter
Optional Redemption Date	28-Jan-15
Amount	10,000
Federal Home Loan Bank Advances Two
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Maturity date	24-Oct-18
Optional Redemption Date	24-Oct-15
Optional Redemption Date	24-Oct-15
Amount	10,000
Federal Home Loan Bank Advances Three
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Maturity date	24-Oct-18
Optional Redemption Date	24-Oct-15
Optional Redemption Date	24-Oct-15
Amount	$10,000

Federal_Home_Loan_Bank_Advance2

Federal Home Loan Bank Advances and Letters of Credit - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Federal Home Loan Bank advances	$140,992	$121,734
Federal home loan bank advances (FHLB), Interest rate range from	0.00%
Federal home loan bank advances (FHLB), Interest rate range to	4.13%
Federal home loan bank advances (FHLB), Weighted average interest rate	0.90%
Letters of credit	1,146	1,065
Federal Home Loan Bank
Debt Instrument [Line Items]
Letters of credit	44,200
Other Federal Home Loan Bank Advances
Debt Instrument [Line Items]
Federal Home Loan Bank advances	$1,000
Debt instrument, maturity date	1-Sep-15
Debt instrument repayment, initial strike date	2-Mar-15
Federal home loan bank advances, fixed interest rate	4.13%
Strike rate	6.75%
LIBOR rate	0.26%

Components_of_Income_Tax_Expen

Components of Income Tax Expense (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Line Items]
Current tax expense									$2,410	$2,535	$3,205
Deferred tax expense									1,154	592	479
Total income tax expense	$362	$1,309	$994	$899	$900	$415	$981	$831	$3,564	$3,127	$3,684

Reconciliation_of_Statutory_Fe

Reconciliation of Statutory Federal Income Tax Rate to Effective Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Statutory Federal Tax Rate [Line Items]
Federal income tax at statutory rate	34.00%	34.00%	34.00%
Tax-exempt income	-5.70%	-6.80%	-5.50%
Dividends received deduction	-0.10%	-1.00%	-1.20%
Federal tax credits	-2.40%	-0.30%	-0.30%
Merger related expenses		2.30%	2.20%
Other, net	0.40%	-1.10%	3.00%
Effective tax rates	26.20%	27.10%	32.20%

Deferred_Tax_Assets_and_Liabil

Deferred Tax Assets and Liabilities (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Deferred tax assets:
Interest on non-performing loans	$216	$134
Allowance for loan losses	3,203	3,505
Deferred compensation	804	1,150
Deferred retirement expense	1,478	1,330
Restricted stock awards	37	26
Accrued directors fees	16	21
Accrued group health contingency	12	32
Write-down of securities		48
Net unrealized loss on available-for-sale securities	224	784
Unrecognized employee benefits under ASC 715-10	1,966	1,113
Other	275
Gross deferred tax assets	8,231	8,143
Deferred tax liabilities:
Deferred loan costs, net of fees	-1,621	-1,485
Prepaid pension	-1,662	-1,643
Accelerated depreciation	-805	-721
Purchased goodwill	-3,729	-3,447
Mortgage servicing rights	-864	-1,002
Core deposit intangibles and other market value adjustments	-2,313	-1,984
Other	-259	-168
Gross deferred tax liabilities	-11,253	-10,450
Net deferred tax liability	($3,022)	($2,307)

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
Charter Holding Corporation
Income Tax [Line Items]
Increase (decrease) in deferred tax	($1,300)
Nashua Bank
Income Tax [Line Items]
Increase (decrease) in deferred tax		-223
Central Financial Corporation
Income Tax [Line Items]
Increase (decrease) in deferred tax	$691		$146

Stock_compensation_plans_Addit

Stock compensation plans - Additional Information (Detail) (USD $)	12 Months Ended	8 Months Ended	12 Months Ended	22 Months Ended	12 Months Ended	31 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2014	Dec. 31, 2011
	EquityPlan	Director				Director
Schedule Of Stock Options [Line Items]
Number of stock-based employee compensation plans	2
Options outstanding	113,500	113,500	123,000	113,500	245,000	113,500	304,042
2004 Plan
Schedule Of Stock Options [Line Items]
Options outstanding	113,500	113,500		113,500		113,500
Options maximum term	10 years
2004 Plan | Restricted Stock
Schedule Of Stock Options [Line Items]
Stock awards, shares outstanding	44,600	44,600		44,600		44,600
2004 Plan | Restricted Stock | Ten Directors
Schedule Of Stock Options [Line Items]
Stock awards, shares granted		15,000
Stock awards, number of directors shares granted	10	10		10		10
Stock awards, vesting period	5 years
Stock awards, grant-date fair value	14.75
Stock awards, compensation expense	30
Stock awards, remaining unrecognized compensation expense	192	192		192		192
Stock awards, recognition period for remaining unrecognized compensation expense	4 years 3 months 18 days
2004 Plan | Restricted Stock | Non-Executive Employee
Schedule Of Stock Options [Line Items]
Stock awards, shares granted				4,500
Stock awards, vesting period	5 years
Stock awards, grant-date fair value	13.5
Stock awards, compensation expense	12		10
Stock awards, remaining unrecognized compensation expense	38	38		38		38
Stock awards, recognition period for remaining unrecognized compensation expense	3 years 2 months 12 days
2004 Plan | Restricted Stock | Executive Chairman
Schedule Of Stock Options [Line Items]
Stock awards, shares granted				10,000
Stock awards, vesting period	5 years
Stock awards, grant-date fair value	12.81
Stock awards, compensation expense	26		17
Stock awards, remaining unrecognized compensation expense	85	85		85		85
Stock awards, recognition period for remaining unrecognized compensation expense	3 years 3 months 18 days
2004 Plan | Restricted Stock | Seven Directors
Schedule Of Stock Options [Line Items]
Stock awards, shares outstanding	30,000,000	30,000,000		30,000,000		30,000,000
Stock awards, shares granted						35,000
Stock awards, number of directors shares granted	7	7		7		7
Stock awards, vesting period	5 years
Stock awards, grant-date fair value	12.56
Stock awards, compensation expense	75		75		38
Stock awards, remaining unrecognized compensation expense	188	188		188		188
Stock awards, recognition period for remaining unrecognized compensation expense	2 years 6 months
Stock awards, shares forfeited					5,000
2004 Plan | Restricted Stock | One Director
Schedule Of Stock Options [Line Items]
Stock awards, shares granted		1,500
Stock awards, number of directors shares granted	1	1		1		1
Stock awards, grant-date fair value	14.75
Stock awards, remaining unrecognized compensation expense	22	$22		$22		$22
2014 Plan
Schedule Of Stock Options [Line Items]
Shares available to grant	410,000	410,000		410,000		410,000
Options outstanding	0	0		0		0

Summary_of_Options_Issued_Purs

Summary of Options Issued Pursuant to the Plans (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Shares
Outstanding at beginning of year	123,000	245,000	304,042
Forfeited	-2,500	-18,600	-19,000
Exercised	-7,000	-103,400	-40,042
Outstanding at end of year	113,500	123,000	245,000
Options exercisable at year-end	113,500	123,000	245,000
Weighted-average fair value of options granted during the year	$0	$0	$0
Weighted-Average Exercise Price
Outstanding at beginning of year	$13.38	$13.23	$12.66
Forfeited	$13.25	$13.15	$12.74
Exercised	$13.25	$13.07	$9.13
Outstanding at end of year	$13.39	$13.38	$13.23
Options exercisable at year-end	$0	$0	$0

Fixed_Stock_Options_Outstandin

Fixed Stock Options Outstanding (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	$13.39
Number Outstanding	113,500
Remaining Contractual Life	10 months 24 days
Exercise Price Range One
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	$13.25
Number Outstanding	106,000
Remaining Contractual Life	10 months 24 days
Exercise Price Range Two
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price	$15.30
Number Outstanding	7,500
Remaining Contractual Life	1 year 1 month 6 days

Employee_Benefit_Plans_Additio

Employee Benefit Plans - Additional Information (Detail) (USD $)	0 Months Ended		12 Months Ended			0 Months Ended
	Oct. 07, 2011	Jan. 01, 2008	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 01, 2012
			Employee
			Age
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit pension plan, eligibility age			21
Defined benefit pension plan, required service period			1 year
Unrecognized net actuarial losses			$5,000,000	$2,800,000
Projected benefit obligation, discount rate			4.24%	5.00%	4.50%
Projected benefit obligation, rate of increase in future compensation levels			0.00%	0.00%	0.00%
Defined benefit pension plan, accumulated benefit obligation			9,000,000	7,000,000
Estimated net loss that will be amortized from accumulated other comprehensive loss into net periodic pension cost			355,000
Long term expected inflation rate			2.50%
Expected long-term rate of return on plan assets			8.00%	8.00%	8.00%
Common stock, shares outstanding			8,258,031	8,216,747
Profit Sharing-Stock Ownership plan, employee contribution			1,000,000	954,000	812,000
Profit Sharing-Stock Ownership plan, employer contribution			828,000	802,000	652,000
Profit Sharing-Stock Ownership plan, vesting percentage		3.00%
Profit Sharing-Stock Ownership plan, maximum matching contribution		4.00%
Employment agreement, term	3 years
Employment agreement, additional term	3 years
Number of officers who will receive lump sum severance payment			5
President
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employment agreement, term						3 years
Employment agreement, additional term						1 year
Split-dollar life insurance arrangements
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined contribution plan, total liabilities			457,000	364,000
Defined contribution plan, expense recorded			93,000	14,000	15,000
Supplemental Retirement Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined contribution plan, total liabilities			4,800,000	4,100,000
Defined contribution plan, expense recorded			939,000	690,000
Salary continuation agreements, amount paid			166,000	219,000	45,000
Equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of assets by investment category			48.00%	47.00%
Equity securities | COMMON STOCK
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Common stock, shares outstanding			30,294	30,294
Fair value of common stock shares			$473,000	$462,000
Fair value of assets by investment category			5.80%	5.60%

Change_in_Projected_Benefit_Ob

Change in Projected Benefit Obligation and Plan Assets (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation at beginning of year	$6,961	$7,507	$6,560
Interest cost	341	332	338
Actuarial loss (gain)	2,069	-648	838
Benefits paid	-247	-220	-229
Settlements	-150	-10
Benefit obligation at end of year	8,974	6,961	7,507
Plan assets at estimated fair value at beginning of year	8,186	7,361	6,828
Actual return on plan assets	390	1,055	756
Benefits paid	-247	-220	-229
Settlements	-150	-10
Contributions			6
Fair value of plan assets at end of year	8,179	8,186	7,361
Funded status	($795)	$1,225	($146)

Components_of_Net_Periodic_Cos

Components of Net Periodic Cost and Other Comprehensive Loss Income (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest cost on benefit obligation	$341	$332	$338
Expected return on assets	-646	-579	-536
Amortization of unrecognized actuarial loss	173	303	258
Net periodic (benefit) cost	-132	56	60
Other changes in plan assets and benefit obligations recognized as other comprehensive loss (income), before tax effect:
Actuarial loss (gain)	2,325	-1,124	618
Amortization of unrecognized actuarial loss	-173	-303	-258
Total recognized as other comprehensive loss (income)	2,152	-1,427	360
Total recognized as net periodic (benefit) cost and other comprehensive loss (income)	$2,020	($1,371)	$420

Assumptions_Used_to_Determine_

Assumptions Used to Determine Net Periodic Pension Cost (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate	5.00%	4.50%	5.25%
Increase in future compensation levels	0.00%	0.00%	0.00%
Expected long-term rate of return on plan assets	8.00%	8.00%	8.00%

Pension_Plan_Assets_Measured_a

Pension Plan Assets Measured at Fair Value by Asset Category (Detail) (USD $)	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of pension plan assets	$8,179		$8,186		$7,361	$6,828
US Treasury Securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of pension plan assets	868		857
Registered investment companies
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of pension plan assets	7,271	[1]	7,184	[1]
Money Market
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of pension plan assets	40		145
Quoted Prices in Active Markets for Identical Assets Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of pension plan assets	7,784		7,791
Quoted Prices in Active Markets for Identical Assets Level 1 | US Treasury Securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of pension plan assets	473		462
Quoted Prices in Active Markets for Identical Assets Level 1 | Registered investment companies
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of pension plan assets	7,271	[1]	7,184	[1]
Quoted Prices in Active Markets for Identical Assets Level 1 | Money Market
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of pension plan assets	40		145
Significant Other Observable Inputs Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of pension plan assets	395		395
Significant Other Observable Inputs Level 2 | US Treasury Securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of pension plan assets	$395		$395
[1]	Includes 53% invested in fixed income funds and 47% invested in equity and index funds.

Pension_Plan_Assets_Measured_a1

Pension Plan Assets Measured at Fair Value by Asset Category (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Fixed Income Funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of assets by investment category	52.00%	53.00%
Equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of assets by investment category	48.00%	47.00%

Target_Allocation_Based_on_Mar

Target Allocation Based on Market Value (Detail)	12 Months Ended
	Dec. 31, 2014
Equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target Allocation, minimum	38.00%
Target Allocation, maximum	58.00%
Fixed Income Funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target Allocation, minimum	42.00%
Target Allocation, maximum	62.00%

Estimated_Future_Benefit_Payme

Estimated Future Benefit Payments (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2015	$345
2016	346
2017	374
2018	391
2019	412
Years 2020-2024	$2,348

Recovered_Sheet3

Commitments and Contingencies - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Commitment And Contingencies [Line Items]
Non cancelable operating lease expiring date	31-Jul-24
Total rental expense	$758	$603	$506

Minimum_Rent_Commitments_Due_i

Minimum Rent Commitments Due in Future Periods (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Operating Leases [Line Items]
2015	$655
2016	562
2017	463
2018	403
2019	341
Thereafter	590
Total minimum lease payments	$3,014

Assets_Measured_at_Fair_Value_

Assets Measured at Fair Value on Recurring Basis (Detail) (Fair value on recurring basis, USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets measured at fair value on a recurring basis
Fair Value Assets, Total	$115,698	$125,238
US Treasury notes
Assets measured at fair value on a recurring basis
Fair Value Assets, Total	40,123	50,016
U.S. Government-sponsored enterprise bonds
Assets measured at fair value on a recurring basis
Fair Value Assets, Total	7,265	7,160
Mortgage-backed securities
Assets measured at fair value on a recurring basis
Fair Value Assets, Total	58,280	46,647
Municipal bonds
Assets measured at fair value on a recurring basis
Fair Value Assets, Total	9,596	20,106
Other bonds and debentures
Assets measured at fair value on a recurring basis
Fair Value Assets, Total	126	275
Equity securities
Assets measured at fair value on a recurring basis
Fair Value Assets, Total	308	1,034
Quoted Prices in Active Markets for Identical Assets Level 1
Assets measured at fair value on a recurring basis
Fair Value Assets, Total	308	1,034
Quoted Prices in Active Markets for Identical Assets Level 1 | Equity securities
Assets measured at fair value on a recurring basis
Fair Value Assets, Total	308	1,034
Significant Other Observable Inputs Level 2
Assets measured at fair value on a recurring basis
Fair Value Assets, Total	115,390	124,204
Significant Other Observable Inputs Level 2 | US Treasury notes
Assets measured at fair value on a recurring basis
Fair Value Assets, Total	40,123	50,016
Significant Other Observable Inputs Level 2 | U.S. Government-sponsored enterprise bonds
Assets measured at fair value on a recurring basis
Fair Value Assets, Total	7,265	7,160
Significant Other Observable Inputs Level 2 | Mortgage-backed securities
Assets measured at fair value on a recurring basis
Fair Value Assets, Total	58,280	46,647
Significant Other Observable Inputs Level 2 | Municipal bonds
Assets measured at fair value on a recurring basis
Fair Value Assets, Total	9,596	20,106
Significant Other Observable Inputs Level 2 | Other bonds and debentures
Assets measured at fair value on a recurring basis
Fair Value Assets, Total	$126	$275

Financial_Instruments_Measured

Financial Instruments Measured at Fair Value on Non-recurring Basis (Detail) (Fair value on nonrecurring basis, USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$997	$2,321
Other real estate owned	251	1,343
Totals	1,248	3,664
Significant Unobservable Inputs Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	997	2,321
Other real estate owned	251	1,343
Totals	$1,248	$3,664

Estimated_Fair_Values_of_Compa

Estimated Fair Values of Company's Financial Instruments (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Financial assets:
Interest-bearing time deposits with other banks	$747	$1,743
Securities available-for-sale	115,698	125,238
Quoted Prices in Active Markets for Identical Assets Level 1
Financial assets:
Cash and cash equivalents	51,120	33,578
Securities available-for-sale	308	1,034
Federal Home Loan Bank stock	10,762	9,760
Accrued interest receivable	2,576	2,628
Financial liabilities:
Securities sold under agreements to repurchase	16,756	27,885
Significant Other Observable Inputs Level 2
Financial assets:
Interest-bearing time deposits with other banks	747	1,743
Securities available-for-sale	115,390	124,204
Loans held-for-sale	2,029	683
Financial liabilities:
Deposits	1,154,466	1,091,419
FHLB advances	141,746	123,166
Significant Unobservable Inputs Level 3
Financial assets:
Loans, net	1,205,578	1,136,761
Investment in unconsolidated subsidiaries	400	587
Financial liabilities:
Subordinated debentures	29,909	19,519
Carrying Value
Financial assets:
Cash and cash equivalents	51,120	33,578
Interest-bearing time deposits with other banks	747	1,743
Securities available-for-sale	115,698	125,238
Federal Home Loan Bank stock	10,762	9,760
Loans held-for-sale	2,000	680
Loans, net	1,206,845	1,134,110
Investment in unconsolidated subsidiaries	620	620
Accrued interest receivable	2,576	2,628
Financial liabilities:
Deposits	1,152,714	1,088,092
FHLB advances	140,992	121,734
Securities sold under agreements to repurchase	16,756	27,885
Subordinated debentures	37,620	20,620
Fair Value
Financial assets:
Cash and cash equivalents	51,120	33,578
Interest-bearing time deposits with other banks	747	1,743
Securities available-for-sale	115,698	125,238
Federal Home Loan Bank stock	10,762	9,760
Loans held-for-sale	2,029	683
Loans, net	1,205,578	1,136,761
Investment in unconsolidated subsidiaries	400	587
Accrued interest receivable	2,576	2,628
Financial liabilities:
Deposits	1,154,466	1,091,419
FHLB advances	141,746	123,166
Securities sold under agreements to repurchase	16,756	27,885
Subordinated debentures	$29,909	$19,519

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)	12 Months Ended	0 Months Ended
	Dec. 31, 2013	Sep. 04, 2013	Oct. 25, 2013	Dec. 21, 2012	Dec. 31, 2014	Dec. 31, 2012
Business Acquisition [Line Items]
Business acquisition, goodwill amount	$44,632,000				$44,576,000
Business acquisition, remeasurement gain	1,369,000
Charter Holding Corporation
Business Acquisition [Line Items]
Percentage of voting equity interests acquired		50.00%
Business acquisition, cash paid		6,200,000
Business acquisition, goodwill amount		4,566,000			4,760,000	2,967,000
Business acquisition, goodwill deductible for tax purpose		0
Business acquisition, remeasurement gain		1,369,000
Carrying value of the equity investment prior to acquisition		4,800,000
Amount of client assets managed					1,500,000,000
Number of operating states					43
Number of operating countries					10
Central Financial Corporation
Business Acquisition [Line Items]
Percentage of voting equity interests acquired			100.00%
Business acquisition, goodwill amount	4,630,000		4,630,000		4,380,000
Business acquisition, goodwill deductible for tax purpose			0
Business acquisition, shares issued			1,087,416
Common stock, share price			$14.70
Business acquisition, value of shares issued			16,000,000
Nashua Bank
Business Acquisition [Line Items]
Business acquisition, cash paid				3,700,000
Business acquisition, goodwill amount				6,746,000	6,786,000	6,746,000
Business acquisition, shares issued				1,153,544
Common stock, share price				$12.76
Business acquisition, value of shares issued				14,700,000
Business acquisition, liabilities incurred				3,000,000
Total acquisition cost				$21,400,000

Fair_Values_of_Assets_Acquired

Fair Values of Assets Acquired and Liabilities Assumed (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Oct. 25, 2013	Sep. 04, 2013	Dec. 31, 2012	Dec. 21, 2012
In Thousands, unless otherwise specified
Business Acquisition [Line Items]
Goodwill	$44,576	$44,632
Central Financial Corporation
Business Acquisition [Line Items]
Cash and due from banks		17,512	17,512
Premises and equipment		2,532	2,532
Total assets acquired		164,432	159,864
Total liabilities assumed		153,077	153,077
Net assets acquired		11,355	6,787
Goodwill	4,380	4,630	4,630
Merger costs		15,985	15,985
Central Financial Corporation | Federal Home Loan Bank Stock
Business Acquisition [Line Items]
Total assets acquired			467
Central Financial Corporation | Available-for-sale Securities
Business Acquisition [Line Items]
Total assets acquired			6,494
Central Financial Corporation | Net Loans acquired
Business Acquisition [Line Items]
Total assets acquired			127,721
Central Financial Corporation | Deposits
Business Acquisition [Line Items]
Total liabilities assumed			149,684
Central Financial Corporation | Core Deposits
Business Acquisition [Line Items]
Core deposit intangible asset		4,568	4,568
Central Financial Corporation | Interest-bearing time deposits
Business Acquisition [Line Items]
Total assets acquired			1,992
Central Financial Corporation | Other Real Estate Owned
Business Acquisition [Line Items]
Total assets acquired			1,477
Central Financial Corporation | Other Assets
Business Acquisition [Line Items]
Total assets acquired			1,669
Central Financial Corporation | Securities sold under agreements to repurchase
Business Acquisition [Line Items]
Total liabilities assumed			2,602
Central Financial Corporation | Other Liabilities
Business Acquisition [Line Items]
Total liabilities assumed			791
Charter Holding Corporation
Business Acquisition [Line Items]
Cash and due from banks				3,095	3,095
Premises and equipment				1,365	1,365
Total assets acquired				6,504	10,540
Total liabilities assumed				2,706	1,107
Net assets acquired				3,798	9,433
Goodwill	4,760			4,566	2,967
Merger costs				12,400	12,400
Charter Holding Corporation | Available-for-sale Securities
Business Acquisition [Line Items]
Total assets acquired				633
Charter Holding Corporation | Insurance Agency Customer List
Business Acquisition [Line Items]
Core deposit intangible asset				4,036	4,036
Charter Holding Corporation | Other Assets
Business Acquisition [Line Items]
Total assets acquired				1,411
Charter Holding Corporation | Other Liabilities
Business Acquisition [Line Items]
Total liabilities assumed				2,706
Nashua Bank
Business Acquisition [Line Items]
Cash and due from banks					2,790	2,790
Premises and equipment					729	729
Total assets acquired					115,762	113,676
Total liabilities assumed					101,130	101,130
Net assets acquired					14,632	12,546
Goodwill	6,786				6,746	6,746
Core deposit intangible asset						2,086
Merger costs					21,378	21,378
Nashua Bank | Federal Home Loan Bank Stock
Business Acquisition [Line Items]
Total assets acquired						383
Nashua Bank | Available-for-sale Securities
Business Acquisition [Line Items]
Total assets acquired						20,852
Nashua Bank | Net Loans acquired
Business Acquisition [Line Items]
Total assets acquired						88,203
Nashua Bank | Deposits
Business Acquisition [Line Items]
Total liabilities assumed						98,479
Nashua Bank | Core Deposits
Business Acquisition [Line Items]
Core deposit intangible asset					2,086
Nashua Bank | Other Assets
Business Acquisition [Line Items]
Total assets acquired						470
Nashua Bank | Securities sold under agreements to repurchase
Business Acquisition [Line Items]
Total liabilities assumed						1,754
Nashua Bank | Other Liabilities
Business Acquisition [Line Items]
Total liabilities assumed						897
Nashua Bank | Real Estate Investment
Business Acquisition [Line Items]
Total assets acquired						$249

Proforma_Information_Detail

Proforma Information (Detail) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Total revenue	$65,880	$67,299
Net income	10,219	9,345
Net income available to common shareholders	$9,903	$8,649
Earnings per share:
Basic	$1.21	$1.05
Diluted	$1.21	$1.05

Shareholders_Equity_Additional

Shareholders Equity - Additional Information (Detail) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014
Stockholders Equity Note [Line Items]
Liquidation account	$4.30
Retained income for which federal and state income taxes have not been provided	$2.10
Retained income not taxed, recapture period	4 years
Combined federal and state tax rate to recapture retained income not taxed	40.00%

Basic_and_Diluted_Net_Income_P

Basic and Diluted Net Income Per Common Share Calculation (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Numerator
Net income as reported	$2,851	$2,704	$2,342	$2,143	$1,995	$2,572	$1,795	$2,052	$10,040	$8,414	$7,759
Preferred stock dividend earned									-230	-316	-666
Net income available to common stockholders	2,795	2,646	2,284	2,085	1,937	2,514	1,735	1,911	9,810	8,098	7,093
Effect of dilutive securities, options									0	0	0
Income available to common stockholders and assumed conversions									$9,810	$8,098	$7,093
Denominator
Weighted average common shares outstanding									8,235,213	7,294,916	5,907,113
Effect of dilutive securities, options									11,315	6,945	4,938
Weighted average common shares outstanding - diluted									8,246,528	7,301,861	5,912,051
Per-Share Amount
Net income per common share - basic	$0.34	$0.32	$0.28	$0.25	$0.24	$0.35	$0.25	$0.27	$1.19	$1.11	$1.20
Net income per common share - diluted	$0.34	$0.32	$0.28	$0.25	$0.24	$0.35	$0.25	$0.27	$1.19	$1.11	$1.20

Components_of_Other_Comprehens

Components of Other Comprehensive (Loss) Income (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Schedule of Other Comprehensive Income (Loss) [Line Items]
Net unrealized holding gains (losses) on available-for-sale securities	$2,367	($2,979)	$2,942
Reclassification adjustment for realized gains in net income	-950	-964	-3,819
Other comprehensive income (loss) before income tax effect	1,417	-3,943	-877
Income tax (expense) benefit	-560	1,561	347
Net change in unrealized gain/loss on available-for-sale securities, net of tax effect	857	-2,382	-530
Other comprehensive (loss) income-pension plan (See Note 12)	-2,152	1,427	-360
Income tax benefit (expense)	853	-567	143
Net change in unrecognized pension plan costs, net of tax effect	-1,299	860	-217
Change in fair value of derivatives used for cash flow hedges		166	302
Income tax expense		-65	-120
Net change in derivatives, net of tax effect		101	182
Other comprehensive income-equity investment		12	8
Reclassification adjustment for realized gains in net income		-44
Other comprehensive (loss) income before income tax effect		-32	8
Income tax benefit (expense)	0	0	0
Net change in unrealized gain/loss on equity investment, net of tax effect		-32	8
Other comprehensive loss, net of tax effect	($442)	($1,453)	($557)

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Loss (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized holding (losses) gains on available-for-sale securities, net of taxes	($341)	($1,198)	$1,184
Unrecognized net actuarial loss, defined benefit pension plan, net of tax	-2,998	-1,699	-2,559
Unrecognized net loss, derivative, net of tax			-101
Unrecognized net income, equity investment, net of tax			32
Accumulated other comprehensive loss	($3,339)	($2,897)	($1,444)

Schedule_of_Regulatory_Assets_

Schedule of Regulatory Assets (Detail) (USD $)	Dec. 31, 2014	Apr. 08, 2014	Dec. 31, 2013	Jul. 02, 2013
In Thousands, unless otherwise specified
Regulatory Assets [Line Items]
Total Capital Amount	$131,597		$123,556
Total Capital to Risk Weighted Assets Ratio	13.28%		12.89%
Total Capital For Capital Adequacy Purposes	79,283		74,876
Total Capital For Capital Adequacy Purposes to Risk Weighted Assets Ratio	8.00%	8.00%	8.00%
Total Capital To Be Well Capitalized Under Prompt Corrective Action Provisions	99,103		94,044
Total Capital For Capital Adequacy Purposes to Risk Weighted Assets Ratio	10.00%		10.00%
Tier 1 Capital Amount	122,161		113,382
Tier 1 Capital to Risk Weighted Assets	12.33%	6.00%	11.83%	4.00%
Tier 1 Capital For Capital Adequacy Purposes	39,641		38,337
Tier 1 Capital For Capital Adequacy Purposes to Risk Weighted Assets	4.00%		4.00%
Tier 1 Capital To Be Well Capitalized Under Prompt Corrective Action Provisions	59,462		57,506
Tier 1 Capital To Be Well Capitalized Under Prompt Corrective Action Provisions to Risk Weighted Assets	6.00%		6.00%
Tier 1 to Total Assets Capital, Amount	122,161		113,382
Tier 1 Capital to Total Assets, Ratio	8.43%	4.00%	8.29%
Tier 1 Capital to Total Assets For Capital Adequacy Purposes, Amount	57,937		54,688
Tier 1 Capital to Total Assets For Capital Adequacy Purposes, Ratio	4.00%		4.00%
Tier 1 Capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$72,421		$68,360
Tier 1 Capital To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%		5.00%

Reconciliation_of_Total_Equity

Reconciliation of Total Equity Included in Consolidated Balance Sheet to Regulatory Capital Ratios (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total stockholders' equity	$139,836	$149,257
Accumulated other comprehensive loss	-3,339	-2,897	-1,444
Allowable allowance for loan losses	9,269	9,757
Goodwill and intangible assets	-53,908
Totals	122,161	113,382
Totals	131,597	123,556
Tier One Actual Capital
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total stockholders' equity	172,730	166,183
Accumulated other comprehensive loss	3,339	2,851
Goodwill and intangible assets	-53,908	-55,652
Totals	122,161	113,382
Before Consolidation
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total stockholders' equity	172,730	166,182
Accumulated other comprehensive loss	3,339	2,982
Allowable allowance for loan losses	9,436	10,043
Goodwill and intangible assets	-53,908	-55,652
Totals	$131,597	$123,555

Regulatory_matters_Additional_

Regulatory matters - Additional Information (Detail)	Dec. 31, 2014	Apr. 08, 2014	Dec. 31, 2013	Jul. 02, 2013
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 capital risk-weighted assets minimum ratio	12.33%	6.00%	11.83%	4.00%
Required total capital to risk-weighted assets	8.00%	8.00%	8.00%
Minimum Tier 1 leverage ratio	8.43%	4.00%	8.29%
Capital conservation buffer, risk-weighted assets ratio	5.00%		5.00%
Beginning January 1, 2016
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer, risk-weighted assets ratio		0.63%
Increase each subsequent year until reaching its final level
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer, risk-weighted assets ratio		0.63%
Final level on January 1, 2019
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer, risk-weighted assets ratio		2.50%
COMMON STOCK
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 capital risk-weighted assets minimum ratio		4.50%

Preferred_Stock_Additional_Inf

Preferred Stock - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended	0 Months Ended		3 Months Ended	0 Months Ended
	Jan. 16, 2009	Dec. 31, 2014	Dec. 29, 2014	Oct. 31, 2014	Mar. 31, 2016	Aug. 25, 2011	Dec. 31, 2013	Dec. 21, 2012
Class of Stock [Line Items]
Common stock purchase warrant, term	10 years
Common stock that would be purchased by warrant	184,275
Common stock, par value	$0.01	$0.01					$0.01
Warrant exercise price	$8.14
Proceeds from issuance of preferred stock	$10,000,000
Small Business Lending Fund, dividend rate		5.00%
Small Business Lending incentive fee		2.00%
Small Business Lending incentive period		4 years 6 months
Preferred stock redemption as a percentage of originally issued share		25.00%
Preferred stock redemption as a percentage of outstanding shares		100.00%
Notes issued to fund the redemption of preferred securities		16,380,000
SBLF Program
Class of Stock [Line Items]
Payment for redemption of preferred stock			15,000,000
Small Business Lending Fund, dividend rate		1.00%
Notes issued to fund the redemption of preferred securities				17,000,000
Preferred securities outstanding		8,000,000
If small business lending increases by 10% or more
Class of Stock [Line Items]
Small Business Lending Fund, dividend rate		1.00%
If small business lending increase by less than 10% but more than 2.5% | Minimum
Class of Stock [Line Items]
Small Business Lending Fund, dividend rate		2.00%
If small business lending increase by less than 10% but more than 2.5% | Maximum
Class of Stock [Line Items]
Small Business Lending Fund, dividend rate		4.00%
If small business lending does not increase in the first two years
Class of Stock [Line Items]
Small Business Lending Fund, dividend rate		7.00%
After 4.5 years
Class of Stock [Line Items]
Small Business Lending Fund, dividend rate		9.00%
Scenario, Forecast | SBLF Program
Class of Stock [Line Items]
Small Business Lending Fund, dividend rate					9.00%
Nashua Bank
Class of Stock [Line Items]
Business acquisition, preferred stock shares assumed								3,000
Series A Preferred Stock
Class of Stock [Line Items]
Issuance of stock	10,000
Preferred stock, par value	$0.01
Preferred stock, liquidation value	$1,000
Redemption of preferred stock						10,000
Payment for redemption of preferred stock						10,000,000
Non-Cumulative Perpetual Series B, Preferred Shares
Class of Stock [Line Items]
Issuance of stock						20,000
Preferred stock, par value		$0.01				$0.01	$0.01
Preferred stock, liquidation value		$1,000				$1,000	$1,000
Proceeds from issuance of preferred stock						$10,000,000
Business acquisition, preferred stock shares assumed		23,000					23,000

Financial_Instruments_Addition

Financial Instruments - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2014
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Letters of credit	1,065	$1,146
Maximum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Letters of Credit term	1 year

Notional_Amounts_of_Financial_

Notional Amounts of Financial Liabilities with Off-Balance Sheet Credit Risk (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Letters of credit	$1,146	$1,065
Commitments to Extend Credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments with off-balance sheet credit risk	25,503	20,793
Line of Credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments with off-balance sheet credit risk	119,901	122,031
Unadvanced portion of construction loans
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments with off-balance sheet credit risk	$12,560	$23,320

Recovered_Sheet4

Goodwill and Intangible Assets by Related Acquisition (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 21, 2012	Sep. 04, 2013	Oct. 25, 2013
In Thousands, unless otherwise specified
Goodwill And Intangible Assets [Line Items]
Goodwill	$44,576	$44,632
Intangible Assets	9,332	11,020
Goodwill and Intangible Assets	53,908
Landmark Bank
Goodwill And Intangible Assets [Line Items]
Goodwill	2,472
Goodwill and Intangible Assets	2,472
New London Trust
Goodwill And Intangible Assets [Line Items]
Goodwill	9,668
Goodwill and Intangible Assets	9,668
First Brandon
Goodwill And Intangible Assets [Line Items]
Goodwill	7,503
Intangible Assets	191
Goodwill and Intangible Assets	7,694
First Community
Goodwill And Intangible Assets [Line Items]
Goodwill	7,651
Intangible Assets	95
Goodwill and Intangible Assets	7,746
McCrillis and Eldredge Insurance, Inc
Goodwill And Intangible Assets [Line Items]
Goodwill	1,356
Intangible Assets	398
Goodwill and Intangible Assets	1,754
Nashua Bank
Goodwill And Intangible Assets [Line Items]
Goodwill	6,786		6,746	6,746
Intangible Assets	1,366
Goodwill and Intangible Assets	8,152
Charter Holding Corporation
Goodwill And Intangible Assets [Line Items]
Goodwill	4,760		2,967		4,566
Intangible Assets	3,374
Goodwill and Intangible Assets	8,134
Central Financial Corporation
Goodwill And Intangible Assets [Line Items]
Goodwill	4,380	4,630				4,630
Intangible Assets	3,908
Goodwill and Intangible Assets	$8,288

Summary_of_Acquired_Amortizing

Summary of Acquired Amortizing Intangible Assets (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Goodwill And Intangible Assets [Line Items]
Gross Carrying Amount	$14,787	$14,787
Accumulated Amortization	5,455	3,767
Net Carrying Amount	9,332	11,020
First Brandon
Goodwill And Intangible Assets [Line Items]
Net Carrying Amount	191
First Brandon | Core Deposits
Goodwill And Intangible Assets [Line Items]
Gross Carrying Amount	2,476	2,476
Accumulated Amortization	2,285	2,131
Net Carrying Amount	191	345
First Community
Goodwill And Intangible Assets [Line Items]
Net Carrying Amount	95
First Community | Core Deposits
Goodwill And Intangible Assets [Line Items]
Gross Carrying Amount	992	992
Accumulated Amortization	897	830
Net Carrying Amount	95	162
McCrillis and Eldredge Insurance, Inc
Goodwill And Intangible Assets [Line Items]
Net Carrying Amount	398
McCrillis and Eldredge Insurance, Inc | Insurance Agency Customer List
Goodwill And Intangible Assets [Line Items]
Gross Carrying Amount	629	629
Accumulated Amortization	231	164
Net Carrying Amount	398	465
Nashua Bank
Goodwill And Intangible Assets [Line Items]
Net Carrying Amount	1,366
Nashua Bank | Core Deposits
Goodwill And Intangible Assets [Line Items]
Gross Carrying Amount	2,086	2,086
Accumulated Amortization	720	379
Net Carrying Amount	1,366	1,707
Charter Holding Corporation
Goodwill And Intangible Assets [Line Items]
Net Carrying Amount	3,374
Charter Holding Corporation | Insurance Agency Customer List
Goodwill And Intangible Assets [Line Items]
Gross Carrying Amount	4,036	4,036
Accumulated Amortization	662	168
Net Carrying Amount	3,374	3,868
Central Financial Corporation
Goodwill And Intangible Assets [Line Items]
Net Carrying Amount	3,908
Central Financial Corporation | Core Deposits
Goodwill And Intangible Assets [Line Items]
Gross Carrying Amount	4,568	4,568
Accumulated Amortization	660	95
Net Carrying Amount	$3,908	$4,473

Recovered_Sheet5

Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	$1,688	$1,000	$425
Core Deposits
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	1,100	759	348
Core Deposits | Minimum
Goodwill And Intangible Assets [Line Items]
Acquired intangible assets, amortization period	10 years
Core Deposits | Maximum
Goodwill And Intangible Assets [Line Items]
Acquired intangible assets, amortization period	15 years
Insurance Agency Customer List
Goodwill And Intangible Assets [Line Items]
Amortization of intangible assets	$561	$241	$77
Acquired intangible assets, amortization period	15 years

Estimated_Amortization_Expense

Estimated Amortization Expense (Detail) (USD $)	Dec. 31, 2014
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]
2015	$1,510
2016	1,332
2017	1,154
2018	1,007
2019	$892

Operating_Segments_Additional_

Operating Segments - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2012
	Segment	Segment
Segment Reporting Information [Line Items]
Number of reportable segments	2	0

Summary_of_Operating_Segments_

Summary of Operating Segments (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Net interest and dividend income (expense)	$10,383	$10,630	$10,663	$10,253	$9,743	$8,073	$7,815	$8,148	$41,929	$33,779	$29,022
PROVISION FOR LOAN LOSSES	169	27	709		268	118	162	414	905	962	2,705
Non-interest income	4,904	4,868	5,072	4,382	4,575	4,541	3,392	3,180	19,226	15,715	14,551
Non-interest expense	11,905	11,458	11,690	11,593	11,155	9,509	8,269	8,031	46,646	36,991	29,425
Income before provision for income taxes	3,213	4,013	3,336	3,042	2,895	2,987	2,776	2,883	13,604	11,541	11,443
Provision for income taxes	362	1,309	994	899	900	415	981	831	3,564	3,127	3,684
Net income	2,851	2,704	2,342	2,143	1,995	2,572	1,795	2,052	10,040	8,414	7,759
Total Assets	1,503,786				1,423,870				1,503,786	1,423,870
Operating Segments | Banking
Segment Reporting Information [Line Items]
Net interest and dividend income (expense)									42,757
PROVISION FOR LOAN LOSSES									905
Non-interest income									10,810
Non-interest expense									38,865
Income before provision for income taxes									13,797
Provision for income taxes									3,704
Net income									10,093
Total Assets	1,480,357								1,480,357
Operating Segments | Wealth Management
Segment Reporting Information [Line Items]
Net interest and dividend income (expense)									7
Non-interest income									8,416
Non-interest expense									7,035
Income before provision for income taxes									1,388
Provision for income taxes									488
Net income									900
Total Assets	18,325								18,325
Holding Company
Segment Reporting Information [Line Items]
Net interest and dividend income (expense)									-835
Non-interest income									6,993
Non-interest expense									746
Income before provision for income taxes									5,412
Provision for income taxes									-628
Net income									6,040
Total Assets	177,837								177,837
Eliminations
Segment Reporting Information [Line Items]
Non-interest income									-6,993
Income before provision for income taxes									-6,993
Net income									-6,993
Total Assets	($172,733)								($172,733)

Condensed_Balance_Sheet_of_Par

Condensed Balance Sheet of Parent (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
ASSETS
Other assets	$11,768	$12,071
Total assets	1,503,786	1,423,870
LIABILITIES
Subordinated debentures	37,620	20,620
Total liabilities	1,363,950	1,274,613
STOCKHOLDERS' EQUITY
Stockholders' equity	139,836	149,257
Total liabilities and stockholders' equity	1,503,786	1,423,870
Parent Company
ASSETS
Cash	3,079	2,589	3,707	2,656
Investment in subsidiary, Lake Sunapee Bank	172,730	166,182
Deferred expenses	818	218
Advances to Lake Sunapee Bank	68	28
Other assets	522	429
Total assets	177,837	170,066
LIABILITIES
Subordinated debentures	37,620	20,620
Other liabilities	381	189
Total liabilities	38,001	20,809
STOCKHOLDERS' EQUITY
Stockholders' equity	139,836	149,257
Total liabilities and stockholders' equity	177,837	170,066
Parent Company | NHTB Capital Trust II
ASSETS
Investment in affiliate	310	310
Parent Company | NHTB Capital Trust III
ASSETS
Investment in affiliate	$310	$310

Condensed_Statement_of_Income_

Condensed Statement of Income of Parent (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Interest expense on subordinated debentures									$855	$806	$1,027
Equity in undistributed earnings of subsidiaries										294	444
NET INCOME	2,851	2,704	2,342	2,143	1,995	2,572	1,795	2,052	10,040	8,414	7,759
Parent Company
Condensed Financial Statements, Captions [Line Items]
Interest expense on subordinated debentures									855	806	1,027
Interest expense on other borrowings											2
Net operating loss including tax benefit									-118	-796	-840
Income (loss) before equity in undistributed earnings of subsidiaries									3,047	2,417	-1,849
Equity in undistributed earnings of subsidiaries									6,993	5,997	9,608
NET INCOME									10,040	8,414	7,759
Parent Company | Lake Sunapee Bank
Condensed Financial Statements, Captions [Line Items]
Dividends from subsidiaries									4,000	4,000
Parent Company | NHTB Capital Trust II and III
Condensed Financial Statements, Captions [Line Items]
Dividends from subsidiaries									$20	$19	$20

Condensed_Statements_of_Cash_F

Condensed Statements of Cash Flow of Parent (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income	$10,040	$8,414	$7,759
Increase (decrease) in accrued interest payable and other liabilities	-2,902	1,091	713
Deferred tax benefit	1,154	592	479
Tax benefit for stock options and awards	-2	-30	-25
Equity in undistributed earnings of subsidiaries		-294	-444
Net cash provided by (used in) operating activities	11,240	20,483	1,071
Cash flows from investing activities:
Net cash used in investing activities	-63,713	-1,931	-88,803
Cash flows from financing activities:
Proceeds from exercise of stock options	92	514	365
Issuance of subordinated debt, net of issuance costs	16,380
Issuance of common stock through dividend reinvestment plan contributions	109	202
Purchase of warrants			-737
Tax benefit for stock options and awards	2	30	25
Dividends paid on preferred stock	-230	-316	-848
Dividends paid on common stock	-4,127	-3,684	-3,052
Net cash (used in) provided by financing activities	70,015	-24,136	102,154
Net increase (decrease) in cash	17,542	-5,584	14,422
Central Financial Corporation
Cash flows from financing activities:
Consideration for acquisition		17,512
Nashua Bank
Cash flows from financing activities:
Consideration for acquisition			-1,623
Parent Company
Cash flows from operating activities:
Net income	10,040	8,414	7,759
Decrease (increase) in other assets	31	-16	1
Increase (decrease) in accrued interest payable and other liabilities	164	-397	345
(Increase) decrease in taxes receivable	-113	-87	97
Deferred tax benefit	-11	-11	-15
Tax benefit for stock options and awards	-2	-30	-25
Amortization of deferred expenses relating to issuance of capital securities and subordinated debentures	20	11	11
Stock award expense	165	103	38
Equity in undistributed earnings of subsidiaries	-6,993	-5,997	-9,608
Net cash provided by (used in) operating activities	3,301	1,990	-1,397
Cash flows from investing activities:
Investment in subsidiary, Lake Sunapee Bank	3	-15,884	-10,364
Net change in advances to subsidiary, Lake Sunapee Bank	-40	45	-30
Net cash used in investing activities	-37	-15,839	-10,394
Cash flows from financing activities:
Proceeds from exercise of stock options	92	514	365
Assumption of preferred stock			3,000
Issuance of subordinated debt, net of issuance costs	16,380
Issuance of common stock through dividend reinvestment plan contributions	109	202
Redemption of preferred stock	-15,000
Purchase of warrants			-737
Repayment of note payable			-543
Tax benefit for stock options and awards	2	30	25
Dividends paid on preferred stock	-230	-316	-848
Dividends paid on common stock	-4,127	-3,684	-3,052
Net cash (used in) provided by financing activities	-2,774	12,731	12,842
Net increase (decrease) in cash	490	-1,118	1,051
Cash, beginning of year	2,589	3,707	2,656
Cash, end of year	3,079	2,589	3,707
Parent Company | Central Financial Corporation
Cash flows from financing activities:
Consideration for acquisition		15,985
Parent Company | Nashua Bank
Cash flows from financing activities:
Consideration for acquisition			$14,632

Quarterly_Financial_Data_Detai

Quarterly Financial Data (Detail) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Data [Line Items]
Interest and dividend income	$12,275	$12,319	$12,254	$11,880	$11,314	$9,573	$9,532	$9,857	$48,728	$40,276	$36,421
Interest expense	1,892	1,689	1,591	1,627	1,571	1,500	1,717	1,709	6,799	6,497	7,399
Net interest and dividend income	10,383	10,630	10,663	10,253	9,743	8,073	7,815	8,148	41,929	33,779	29,022
PROVISION FOR LOAN LOSSES	169	27	709		268	118	162	414	905	962	2,705
Noninterest income	4,904	4,868	5,072	4,382	4,575	4,541	3,392	3,180	19,226	15,715	14,551
Noninterest expense	11,905	11,458	11,690	11,593	11,155	9,509	8,269	8,031	46,646	36,991	29,425
Income before income taxes	3,213	4,013	3,336	3,042	2,895	2,987	2,776	2,883	13,604	11,541	11,443
Income tax expense	362	1,309	994	899	900	415	981	831	3,564	3,127	3,684
Net income	2,851	2,704	2,342	2,143	1,995	2,572	1,795	2,052	10,040	8,414	7,759
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$2,795	$2,646	$2,284	$2,085	$1,937	$2,514	$1,735	$1,911	$9,810	$8,098	$7,093
Basic earnings per common share	$0.34	$0.32	$0.28	$0.25	$0.24	$0.35	$0.25	$0.27	$1.19	$1.11	$1.20
Earnings per common share, assuming dilution	$0.34	$0.32	$0.28	$0.25	$0.24	$0.35	$0.25	$0.27	$1.19	$1.11	$1.20

Subsequent_Event_Additional_In

Subsequent Event - Additional Information (Detail) (Subsequent Event, Dividend Declared, USD $)	0 Months Ended
	Jan. 08, 2015	Jan. 08, 2015
Subsequent Event | Dividend Declared
Subsequent Event [Line Items]
Dividend declared per share	$0.13	$0.13
Dividend declared date	8-Jan-15
Dividend payable date	30-Jan-15
Dividend record date	23-Jan-15