Peoples Financial Services (PFIS) 10-Q 8 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	PFIS
Entity Registrant Name	PEOPLES FINANCIAL SERVICES CORP.
Entity Central Index Key	1056943
Current Fiscal Year End Date	-19
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		7,548,358

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Assets:
Cash and due from banks	$24,193	$24,656
Interest-bearing deposits in other banks	6,813	6,770
Federal funds sold	8,625
Investment securities:
Available-for-sale	280,300	339,586
Held-to-maturity: Fair value March 31, 2015, $14,729; December 31, 2014, $15,215	14,172	14,665
Total investment securities	294,472	354,251
Loans held for sale	3,101	3,486
Loans, net	1,237,168	1,209,894
Less: allowance for loan losses	10,803	10,338
Net loans	1,226,365	1,199,556
Premises and equipment, net	26,117	25,433
Accrued interest receivable	4,922	5,580
Goodwill	63,370	63,370
Intangible assets	5,197	5,501
Other assets	50,786	53,066
Total assets	1,713,961	1,741,669
Deposits:
Noninterest-bearing	305,037	313,498
Interest-bearing	1,111,241	1,112,060
Total deposits	1,416,278	1,425,558
Short-term borrowings		19,557
Long-term debt	32,318	33,140
Accrued interest payable	460	574
Other liabilities	15,447	16,061
Total liabilities	1,464,503	1,494,890
Stockholders' equity:
Common stock: par value $2.00, authorized 25,000,000 shares; issued 7,548,358 shares	15,097	15,097
Capital surplus	140,232	140,214
Retained earnings	95,000	92,297
Accumulated other comprehensive loss	-871	-829
Total stockholders' equity	249,458	246,779
Total liabilities and stockholders' equity	$1,713,961	$1,741,669

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Held-to-maturity, Fair value	$14,729	$15,215
Common stock, par value	$2	$2
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	7,548,358	7,548,358

Consolidated_Statements_of_Inc

Consolidated Statements of Income and Comprehensive Income (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Interest and fees on loans:
Taxable	$13,340	$14,000
Tax-exempt	559	635
Interest and dividends on investment securities:
Taxable	900	928
Tax-exempt	805	829
Dividends	9	16
Interest on interest-bearing deposits in other banks	8	10
Interest on federal funds sold	7	14
Total interest income	15,628	16,432
Interest expense:
Interest on deposits	1,268	1,357
Interest on short-term borrowings	8	34
Interest on long-term debt	259	296
Total interest expense	1,535	1,687
Net interest income	14,093	14,745
Provision for loan losses	750	857
Net interest income after provision for loan losses	13,343	13,888
Noninterest income:
Service charges, fees and commissions	1,612	1,624
Merchant services income	790	894
Commission and fees on fiduciary activities	459	567
Wealth management income	205	187
Mortgage banking income	222	99
Life insurance investment income	189	189
Net gain on sale of investment securities available-for-sale	832
Total noninterest income	4,309	3,560
Noninterest expense:
Salaries and employee benefits expense	5,233	5,168
Net occupancy and equipment expense	2,468	1,733
Merchant services expense	533	565
Amortization of intangible assets	305	343
Acquisition related expense		608
Other expenses	2,555	2,870
Total noninterest expense	11,094	11,287
Income before income taxes	6,558	6,161
Income tax expense	1,514	1,463
Net income	5,044	4,698
Other comprehensive income (loss):
Unrealized gain on investment securities available-for-sale	767	2,394
Reclassification adjustment for net gain on sales included in net income	-832
Other comprehensive income (loss)	-65	2,394
Income tax expense (benefit) related to other comprehensive income (loss)	-23	838
Other comprehensive income (loss), net of income taxes	-42	1,556
Comprehensive income	$5,002	$6,254
Net income:
Basic	$0.67	$0.62
Diluted	$0.67	$0.62
Average common shares outstanding:
Basic	7,548,358	7,550,253
Diluted	7,548,358	7,580,480
Dividends declared	$0.31	$0.31

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Stockholders' Equity (USD $)	Total	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]
In Thousands
Balance at Dec. 31, 2013	$238,792	$15,614	$146,109	$84,008	($698)	($6,241)
Net income	4,698			4,698
Other comprehensive income (loss), net of income taxes	1,556				1,556
Dividends declared	-2,341			-2,341
Shares retired	-109	-7	-102
Reissuance under option plan	39		28			11
Repurchase and held	-70					-70
Balance at Mar. 31, 2014	242,565	15,607	146,035	86,365	858	-6,300
Balance at Dec. 31, 2014	246,779	15,097	140,214	92,297	-829
Net income	5,044			5,044
Other comprehensive income (loss), net of income taxes	-42				-42
Dividends declared	-2,341			-2,341
Stock based compensation	18		18
Balance at Mar. 31, 2015	$249,458	$15,097	$140,232	$95,000	($871)

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2014
Statement of Stockholders' Equity [Abstract]
Dividends declared (in dollars per share)	$0.31
Share retired, shares	3,386
Reissuance under option plan, shares	600
Repurchase and held, shares	1,800

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net income	$5,044	$4,698
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of premises and equipment	388	574
Amortization of deferred loan costs	132	22
Amortization of intangibles	305	343
Net accretion of purchase accounting adjustments on tangible assets	-292	-864
Provision for loan losses	750	857
Net gain on sale of other real estate owned	-30	-22
Net loss on disposal of equipment		63
Loans originated for sale	-5,300	-2,169
Proceeds from sale of loans originated for sale	5,907	2,104
Net loss (gain) on sale of loans originated for sale	-222	6
Net amortization of investment securities	1,022	1,043
Net gain on sale of investment securities	-832
Life insurance investment income	-189	-189
Deferred income tax benefit	-142
Stock based compensation	18
Net change in:
Accrued interest receivable	658	500
Other assets	710	-1,962
Accrued interest payable	-114	-113
Other liabilities	-452	2,239
Net cash provided by operating activities	7,361	7,130
Cash flows from investing activities:
Proceeds from sales of investment securities available-for-sale	50,981	60
Proceeds from repayments of investment securities:
Available-for-sale	9,835	12,634
Held-to-maturity	482	675
Purchases of investment securities:
Available-for-sale	-1,774	-13,841
Held-to-maturity	0	0
Net redemption of restricted equity securities	1,555
Net increase in lending activities	-27,689	-798
Purchases of premises and equipment	-1,097	-122
Proceeds from sale of other real estate owned	338	193
Net cash provided by (used in) investing activities	32,631	-1,199
Cash flows from financing activities:
Net (decrease) increase in deposits	-9,081	24,855
Repayment of long-term debt	-808	-890
Net increase (decrease) in short-term borrowings	-19,557	487
Redemption of common stock		-70
Purchase of treasury stock		-70
Cash dividends paid	-2,341	-2,341
Net cash provided by (used in) financing activities	-31,787	21,971
Net increase in cash and cash equivalents	8,205	27,902
Cash and cash equivalents at beginning of year	31,426	51,310
Cash and cash equivalents at end of year	39,631	79,212
Cash paid during the period for:
Interest	1,649	2,110
Income taxes	0	0
Noncash items:
Transfers of loans to other real estate	71	201
Retirement of treasury shares	0	0
Fair value of assets acquired:
Loans, net	104	580
Premises and equipment	-25	-25
Core deposit and other intangible assets	-304	-343
Fair value of assets acquired, net	-225	212
Fair value of liabilities assumed:
Deposits	199	296
Long-term debt	14	13
Fair value of liabilities assumed, net	$213	$309

Summary_of_significant_account

Summary of significant accounting policies	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Summary of significant accounting policies	1. Summary of significant accounting policies:
	Nature of operations:
	Peoples Financial Services Corp., a bank holding company incorporated under the laws of Pennsylvania, provides a full range of financial services through its wholly-owned subsidiary, Peoples Security Bank and Trust Company (“Peoples Bank”), including its subsidiaries, Peoples Advisors, LLC and Penseco Realty, Inc. (collectively, the “Company” or “Peoples”). The Company services its retail and commercial customers through twenty-six full-service community banking offices located within the Lackawanna, Lehigh, Luzerne, Monroe, Susquehanna, Wayne and Wyoming Counties of Pennsylvania and Broome County of New York.
	Basis of presentation:
	The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP’) for interim financial information and with the instructions to Form 10-Q and Article 10-01 of Regulation S-X. In the opinion of management, all normal recurring adjustments necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. All significant intercompany balances and transactions have been eliminated in consolidation. Prior-period amounts are reclassified when necessary to conform to the current year’s presentation. These reclassifications did not have any effect on the operating results or financial position of the Company. The operating results and financial position of the Company for the three months ended and as of March 31, 2015, are not necessarily indicative of the results of operations and financial position that may be expected in the future.
	The preparation of consolidated financial statements in conformity with 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 consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates that are particularly susceptible to material change in the near term relate to the determination of the allowance for loan losses, fair value of financial instruments, the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans, the valuation of deferred tax assets, determination of other-than-temporary impairment losses on securities, impairment of goodwill and fair value of assets acquired and liabilities assumed in business combinations. Actual results could differ from those estimates. For additional information and disclosures required under GAAP, reference is made to the Company’s Annual Report on Form 10-K for the period ended December 31, 2014.
	The Company has evaluated events and transactions occurring subsequent to the balance sheet date of March 31, 2015, for items that should potentially be recognized or disclosed in these consolidated financial statements. The evaluation was conducted through the date these consolidated financial statements were issued.
	Recent accounting standards:
	In January 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-01 which eliminates the requirement in Subtopic 225-20 to consider whether an underlying event or transaction is extraordinary, and if so, to separately present the item in the income statement net of tax, after income from continuing operations. Items that are either unusual in nature or infrequently occurring will continue to be reported as a separate component of income from continuing operations. Alternatively, these amounts may still be disclosed in the notes to the financial statements. The same requirement has been expanded to include items that are both unusual and infrequent, i.e., they should be separately presented as a component of income from continuing operations or disclosed in the footnotes. The ASU is effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted from the beginning of the fiscal year of adoption. The adoption of ASU 2015-01 is not expected to have a material effect on the operating results or financial position of the Company.
	In February 2015, the FASB issued ASU 2015-02 which changes the consolidation analysis for all reporting entities. The changes primarily affect the consolidation of limited partnerships and their equivalents (e.g., limited liability corporations), as well as structured vehicles such as collateralized debt obligations. The ASU simplifies U.S. GAAP by eliminating entity specific consolidation guidance for limited partnerships. It also revises other aspects of the consolidation analysis, including how kick-out rights, fee arrangements and related parties are assessed. The amendments rescind the indefinite deferral of FASB Statement 167 for certain investment funds and replace it with a permanent scope exception for money market funds. The ASU is effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The adoption of ASU 2015-02 is not expected to have a material effect on the operating results or financial position of the Company.

Other_comprehensive_income_los

Other comprehensive income (loss)	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Other comprehensive income (loss)	2. Other comprehensive income (loss):
	The components of other comprehensive income (loss) and their related tax effects are reported in the Consolidated Statements of Income and Comprehensive Income. The accumulated other comprehensive loss included in the Consolidated Balance Sheets relates to net unrealized gains and losses on investment securities available-for-sale and benefit plan adjustments.
	The components of accumulated other comprehensive loss included in stockholders’ equity at March 31, 2015 and December 31, 2014 is as follows:
			March 31,			December 31,
			2015			2014
	Net unrealized gain on investment securities available-for-sale		$	6,227		$	6,292
	Related income taxes			2,179			2,202
	Net of income taxes			4,048			4,090
	Benefit plan adjustments			(7,567	)		(7,567	)
	Related income taxes			(2,648	)		(2,648	)
	Net of income taxes			(4,919	)		(4,919	)
	Accumulated other comprehensive loss		$	(871	)	$	(829	)
	Other comprehensive income (loss) and related tax effects for the three months ended March 31, 2015 and 2014 is as follows:
	Three months ended March 31		2015			2014
	Unrealized gain on investment securities available-for-sale		$	767		$	2,394
	Net gain on the sale of investment securities available-for-sale (1)			(832	)
	Other comprehensive income (loss) gain before taxes			(65	)		2,394
	Income taxes expense (benefit)			(23	)		838
	Other comprehensive income (loss)		$	(42	)	$	1,556
	-1	Represents amounts reclassified out of accumulated comprehensive income and included in gains on sale of investment securities on the consolidated statements of income.

Earnings_per_share

Earnings per share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings per share	3. Earnings per share:
	Basic earnings per share represent income available to common stockholders divided by the weighted-average number of common shares outstanding during the period. Diluted earnings per share reflect additional common shares that would have been outstanding if dilutive potential common shares had been issued, as well as any adjustment to income that would result from the assumed issuance. Potential common shares that may be issued by the Company relate solely to outstanding stock options, and are determined using the treasury stock method.
		2015				2014
	For the three months ended March 31	Basic		Diluted		Basic		Diluted
	Net Income (Numerator)	$	5,044	$	5,044	$	4,698	$	4,698
	Average common shares outstanding (Denominator)		7,548,358		7,548,358		7,550,253		7,580,480
	Earnings per share	$	0.67	$	0.67	$	0.62	$	0.62

Investment_securities

Investment securities	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Investment securities	4. Investment securities:
	The amortized cost and fair value of investment securities aggregated by investment category at March 31, 2015 and December 31, 2014 are summarized as follows:
	March 31, 2015	Amortized Cost		Gross		Gross		Fair
				Unrealized		Unrealized		Value
				Gains		Losses
	Available-for-sale:
	U.S. Government-sponsored enterprises	$	95,683	$	487	$	22	$	96,148
	State and municipals:
	Taxable		16,447		1,063		15		17,495
	Tax-exempt		83,133		4,563		47		87,649
	Mortgage-backed securities:
	U.S. Government agencies		35,339		154		93		35,400
	U.S. Government-sponsored enterprises		43,471		286		149		43,608
	Total	$	274,073	$	6,553	$	326	$	280,300
	Held-to-maturity:
	Tax-exempt state and municipals	$	7,370	$	103	$	33	$	7,440
	Mortgage-backed securities:
	U.S. Government agencies		96		1				97
	U.S. Government-sponsored enterprises		6,706		486				7,192
	Total	$	14,172	$	590	$	33	$	14,729
	December 31, 2014	Amortized Cost		Gross		Gross		Fair
				Unrealized		Unrealized		Value
				Gains		Losses
	Available-for-sale:
	U.S. Treasury securities	$	48,393	$	157			$	48,550
	U.S. Government-sponsored enterprises		95,990		337	$	82		96,245
	State and municipals:
	Taxable		16,490		943		26		17,407
	Tax-exempt		87,954		4,971		24		92,901
	Mortgage-backed securities:
	U.S. Government agencies		37,511		132		167		37,476
	U.S. Government-sponsored enterprises		46,956		277		226		47,007
	Total	$	333,294	$	6,817	$	525	$	339,586
	Held-to-maturity:
	Tax-exempt state and municipals	$	7,370	$	105	$	38	$	7,437
	Mortgage-backed securities:
	U.S. Government agencies		100		2				102
	U.S. Government-sponsored enterprises		7,195		481				7,676
	Total	$	14,665	$	588	$	38	$	15,215
	The maturity distribution of the fair value, which is the net carrying amount, of the debt securities classified as available-for-sale at March 31, 2015, is summarized as follows:
	March 31, 2015	Fair
		Value
	Within one year	$	32,644
	After one but within five years		80,316
	After five but within ten years		28,954
	After ten years		59,378
			201,292
	Mortgage-backed securities		79,008
	Total	$	280,300
	The maturity distribution of the amortized cost and fair value, of debt securities classified as held-to-maturity at March 31, 2015, is summarized as follows:
	March 31, 2015	Amortized		Fair
		Cost		Value
	Within one year
	After one but within five years	$	326	$	334
	After five but within ten years		176		182
	After ten years		6,868		6,924
			7,370		7,440
	Mortgage-backed securities		6,802		7,289
	Total	$	14,172	$	14,729
	Securities with a carrying value of $207,895 and $216,192 at March 31, 2015 and December 31, 2014, respectively, were pledged to secure public deposits and repurchase agreements as required or permitted by law.
	Securities and short-term investment activities are conducted with a diverse group of government entities, corporations and state and local municipalities. The counterparty’s creditworthiness and type of collateral is evaluated on a case-by-case basis. At March 31, 2015 and December 31, 2014, there were no significant concentrations of credit risk from any one issuer, with the exception of U.S. Government agencies and sponsored enterprises, that exceeded 10.0 percent of stockholders’ equity.
	The fair value and gross unrealized losses of investment securities with unrealized losses for which an other-than-temporary impairment (“OTTI”) has not been recognized at March 31, 2015 and December 31, 2014, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position, are summarized as follows:
		Less Than 12 Months				12 Months or More				Total
	March 31, 2015	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
Value		Losses		Value		Losses		Value		Losses
U.S. Government-sponsored enterprises	$	7,970	$	12	$	2,999	$	10	$	10,969	$	22
State and municipals:
Taxable						554		15		554		15
Tax-exempt		14,234		61		787		19		15,021		80
Mortgage-backed securities:
U.S. Government agencies		14,885		62		3,790		31		18,675		93
U.S. Government-sponsored enterprises		19,098		149						19,098		149
Total	$	56,187	$	284	$	8,130	$	75	$	64,317	$	359
	Less Than 12 Months				12 Months or More				Total
December 31, 2014	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
	Value		Losses		Value		Losses		Value		Losses
U.S. Government-sponsored enterprises	$	21,228	$	33	$	7,954	$	49	$	29,182	$	82
State and municipals:
Taxable						544		26		544		26
Tax-exempt		4,702		23		2,423		39		7,125		62
Mortgage-backed securities:
U.S. Government agencies		20,148		167						20,148		167
U.S. Government-sponsored enterprises		22,870		226						22,870		226
Total	$	68,948	$	449	$	10,921	$	114	$	79,869	$	563
The Company had 63 investment securities, consisting of 36 tax-exempt state and municipal obligations, one taxable state and municipal obligation, three U.S. Government-sponsored enterprise securities, and 23 mortgage-backed securities that were in unrealized loss positions at March 31, 2015. Of these securities, one U.S. Government-sponsored enterprise security, one taxable state and municipal obligation, two mortgage-backed securities and two tax-exempt state and municipal securities were in a continuous unrealized loss position for twelve months or more. Management does not consider the unrealized losses on the debt securities, as a result of changes in interest rates, to be OTTI based on historical evidence that indicates the cost of these securities is recoverable within a reasonable period of time in relation to normal cyclical changes in the market rates of interest. Moreover, because there has been no material change in the credit quality of the issuers or other events or circumstances that may cause a significant adverse impact on the fair value of these securities, and management does not intend to sell these securities and it is unlikely that the Company will be required to sell these securities before recovery of their amortized cost basis, which may be maturity, the Company does not consider the unrealized losses to be OTTI at March 31, 2015. There was no OTTI recognized for the three months ended March 31, 2015 and 2014.
The Company had 52 investment securities, consisting of 16 tax-exempt state and municipal obligations, one taxable state and municipal obligation, nine U.S. Government-sponsored enterprise securities and 26 mortgage-backed securities that were in unrealized loss positions at December 31, 2014. Of these securities, two U.S. Government-sponsored enterprise securities, four tax-exempt state and municipal securities, and one taxable state and municipal obligation were in a continuous unrealized loss position for twelve months or more.

Loans_net_and_allowance_for_lo

Loans, net and allowance for loan losses	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Loans, net and allowance for loan losses	5. Loans, net and allowance for loan losses:
	The major classifications of loans outstanding, net of deferred loan origination fees and costs at March 31, 2015 and December 31, 2014 are summarized as follows. Net deferred loan costs were $648 and $651 at March 31, 2015 and December 31, 2014.
			March 31,			December 31,
			2015			2014
	Commercial		$	319,468		$	319,590
	Real estate:
	Commercial			522,432			493,481
	Residential			305,663			310,667
	Consumer			89,605			86,156
	Total		$	1,237,168		$	1,209,894
	The changes in the allowance for loan losses account by major classification of loan for the three months ended March 31, 2015 and 2014 are summarized as follows:
						Real estate
	March 31, 2015		Commercial			Commercial			Residential			Consumer				Total
	Allowance for loan losses:
	Beginning Balance		$	2,321		$	3,037		$	3,690		$	1,290			$	10,338
	Charge-offs			(37	)		(49	)		(199	)		(80	)			(365	)
	Recoveries			61			1			5			13				80
	Provisions			75			98			413			164				750
	Ending balance		$	2,420		$	3,087		$	3,909		$	1,387			$	10,803
						Real estate
	March 31, 2014		Commercial			Commercial			Residential			Consumer				Total
	Allowance for loan losses:
	Beginning Balance		$	2,008		$	2,394		$	3,135		$	1,114			$	8,651
	Charge-offs			(347	)		(28	)		(240	)		(68	)			(683	)
	Recoveries									3			31				34
	Provisions			300			107			350			100				857
	Ending balance		$	1,961		$	2,473		$	3,248		$	1,177			$	8,859
	The allocation of the allowance for loan losses and the related loans by major classifications of loans at March 31, 2015 and December 31, 2014 is summarized as follows:
						Real estate
	March 31, 2015		Commercial			Commercial			Residential			Consumer				Unallocated		Total
	Allowance for loan losses:
	Ending balance		$	2,420		$	3,087		$	3,909		$	1,387					$	10,803
	Ending balance: individually evaluated for impairment			1,263			625			843			90						2,821
	Ending balance: collectively evaluated for impairment			954			2,355			3,066			1,297						7,672
	Ending balance: loans acquired with deteriorated credit quality		$	203		$	107		$			$						$	310
	Loans receivable:
	Ending balance		$	319,468		$	522,432		$	305,663		$	89,605					$	1,237,168
	Ending balance: individually evaluated for impairment			2,631			4,757			3,853			101						11,342
	Ending balance: collectively evaluated for impairment			315,524			516,295			301,752		$	89,504						1,223,075
	Ending balance: loans acquired with deteriorated credit quality		$	1,313		$	1,380		$	58								$	2,751
						Real estate
	December 31, 2014		Commercial			Commercial			Residential			Consumer				Unallocated		Total
	Allowance for loan losses:
	Ending balance		$	2,321		$	3,037		$	3,690		$	1,290					$	10,338
	Ending balance: individually evaluated for impairment			1,072			805			767			38						2,682
	Ending balance: collectively evaluated for impairment			1,081			2,125			2,921			1,252						7,379
	Ending balance: loans acquired with deteriorated credit quality		$	168		$	107		$	2		$						$	277
	Loans receivable:
	Ending balance		$	319,590		$	493,481		$	310,667		$	86,156					$	1,209,894
	Ending balance: individually evaluated for impairment			2,595			5,084			4,001			127						11,807
	Ending balance: collectively evaluated for impairment			315,642			487,024			306,608		$	86,029						1,195,303
	Ending balance: loans acquired with deteriorated credit quality		$	1,353		$	1,373		$	58								$	2,784
	The Company segments loans into risk categories based on relevant information about the ability of borrowers to service their debt such as current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. Loans are individually analyzed for credit risk by classifying them within the Company’s internal risk rating system. The Company’s risk rating classifications are defined as follows:
		•		Pass- A loan to borrowers with acceptable credit quality and risk that is not adversely classified as Substandard, Doubtful, Loss nor designated as Special Mention.
		•		Special Mention- A loan that has potential weaknesses that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or in the institution’s credit position at some future date. Special Mention loans are not adversely classified since they do not expose the Company to sufficient risk to warrant adverse classification.
		•		Substandard- A loan that is inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified must have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the bank will sustain some loss if the deficiencies are not corrected.
		•		Doubtful – A loan classified as Doubtful has all the weaknesses inherent in one classified Substandard with the added characteristic that the weaknesses make the collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable.
		•		Loss-A loan classified as Loss is considered uncollectible and of such little value that its continuance as bankable loans is not warranted. This classification does not mean that the loan has absolutely no recovery or salvage value, but rather it is not practical or desirable to defer writing off this basically worthless asset even though partial recovery may be affected in the future.
	The following tables present the major classification of loans summarized by the aggregate pass rating and the classified ratings of special mention, substandard and doubtful within the Company’s internal risk rating system at March 31, 2015 and December 31, 2014:
	March 31, 2015:		Pass			Special			Substandard			Doubtful		Total
						Mention
	Commercial		$	307,690		$	6,802		$	4,976				$	319,468
	Real estate:
	Commercial			503,620			9,885			8,927					522,432
Residential			296,500			1,065			8,098					305,663
Consumer			89,504						101					89,605
Total		$	1,197,314		$	17,752		$	22,102				$	1,237,168
December 31, 2014:		Pass			Special			Substandard			Doubtful		Total
					Mention
Commercial		$	306,066		$	6,135		$	7,389				$	319,590
Real estate:
Commercial			472,270			9,858			11,353					493,481
Residential			300,299			2,123			8,245					310,667
Consumer			86,037			13			106					86,156
Total		$	1,164,672		$	18,129		$	27,093				$	1,209,894
Information concerning nonaccrual loans by major loan classification at March 31, 2015 and December 31, 2014 is summarized as follows:
		March 31,			December 31,
		2015			2014
Commercial		$	2,366		$	1,322
Real estate:
Commercial			3,781			3,732
Residential			3,331			3,523
Consumer			97			122
Total		$	9,575		$	8,699
The major classifications of loans by past due status are summarized as follows:
March 31, 2015		30-59 Days			60-89 Days			Greater			Total Past				Current				Total		Loans > 90
		Past Due			Past Due			than 90			Due								Loans		Days and
								Days													Accruing
Commercial		$	543		$	43		$	2,366		$	2,952			$	316,516			$	319,468
Real estate:
Commercial			1,689			220			3,781			5,690				516,742				522,432
Residential			3,811			1,065			4,106			8,982				296,681				305,663	$	775
Consumer			679			170			559			1,408				88,197				89,605		462
Total		$	6,722		$	1,498		$	10,812		$	19,032			$	1,218,136			$	1,237,168	$	1,237
December 31, 2014		30-59 Days			60-89 Days			Greater			Total Past				Current				Total		Loans > 90
		Past Due			Past Due			than 90			Due								Loans		Days and
								Days													Accruing
Commercial		$	898		$	117		$	1,322		$	2,337			$	317,253			$	319,590
Real estate:
Commercial			2,100			888			3,868			6,856				486,625				493,481	$	136
Residential			3,154			1,239			4,585			8,978				301,689				310,667		1,062
Consumer			848			247			547			1,642				84,514				86,156		425
Total		$	7,000		$	2,491		$	10,322		$	19,813			$	1,190,081			$	1,209,894	$	1,623
The following tables summarize information concerning impaired loans at and for the period ended March 31, 2015, December 31, 2014 and March 31, 2014, by major loan classification:
											For the Quarter Ended
March 31, 2015		Recorded			Unpaid			Related			Average				Interest
		Investment			Principal			Allowance			Recorded				Income
					Balance						Investment				Recognized
With no related allowance:
Commercial		$	2,319		$	3,900					$	2,349			$	20
Real estate:
Commercial			2,198			2,936						2,565				19
Residential			2,272			2,456						2,472				1
Consumer			11			11						47
Total			6,800			9,303						7,433				40
With an allowance recorded:
Commercial			1,625			1,625		$	1,466			1,597			$	14
Real estate:
Commercial			3,939			3,939			732			3,732				17
Residential			1,639			1,639			843			1,513				10
Consumer			90			90			90			67
Total			7,293			7,293			3,131			6,909				41
Commercial			3,944			5,525			1,466			3,946				34
Real estate:
Commercial			6,137			6,875			732			6,297				36
Residential			3,911			4,095			843			3,985				11
Consumer			101			101			90			114
Total		$	14,093		$	16,596		$	3,131		$	14,342			$	81
											For the Year Ended
December 31, 2014		Recorded			Unpaid			Related			Average				Interest
		Investment			Principal			Allowance			Recorded				Income
					Balance						Investment				Recognized
With no related allowance:
Commercial		$	2,379		$	4,084					$	2,669				141
Real estate:
Commercial			2,932			3,690						7,944				120
Residential			2,672			2,857						2,731				4
Consumer			83			83						94
Total			8,066			10,714						13,438				265
With an allowance recorded:
Commercial			1,569			1,569		$	1,240			1,787			$	58
Real estate:
Commercial			3,525			3,525			912			2,293				28
Residential			1,387			1,387			769			590				10
Consumer			44			44			38			10				1
Total			6,525			6,525			2,959			4,680				97
Commercial			3,948			5,653			1,240			4,456				199
Real estate:
Commercial			6,457			7,215			912			10,237				148
Residential			4,059			4,244			769			3,321				14
Consumer			127			127			38			104				1
Total		$	14,591		$	17,239		$	2,959		$	18,118			$	362
											For the Quarter Ended
March 31, 2014		Recorded			Unpaid			Related			Average				Interest
		Investment			Principal			Allowance			Recorded				Income
					Balance						Investment				Recognized
With no related allowance:
Commercial		$	2,008		$	4,762					$	3,493
Real estate:
Commercial			9,958			12,746						10,227
Residential			2,740			3,144						2,872
Consumer			128			128						109
Total			14,834			20,780						16,701
With an allowance recorded:
Commercial			1,728			1,728		$	1,128			1,964			$	26
Real estate:
Commercial			1,404			1,404			542			1,399				18
Residential			261			261			162			523
Consumer
Total			3,393			3,393			1,832			3,886				44
Commercial			3,736			6,490			1,128			5,457				26
Real estate:
Commercial			11,362			14,150			542			11,626				18
Residential			3,001			3,405			162			3,395
Consumer			128			128						109
Total		$	18,227		$	24,173		$	1,832		$	20,587			$	44
Included in the commercial loan and residential and commercial real estate categories are troubled debt restructurings that are classified as impaired. Trouble debt restructurings totaled $2,967 at March 31, 2015, $2,933 at December 31, 2014 and $1,924 at March 31, 2014.
Troubled debt restructured loans are loans with original terms, interest rate, or both, that have been modified as a result of a deterioration in the borrower’s financial condition and a concession has been granted that the Company would not otherwise consider. Unless on nonaccrual, interest income on these loans is recognized when earned, using the interest method. The Company offers a variety of modifications to borrowers that would be considered concessions. The modification categories offered can generally fall within the following categories:
	•		Rate Modification - A modification in which the interest rate is changed to a below market rate.
	•		Term Modification - A modification in which the maturity date, timing of payments or frequency of payments is changed.
	•		Interest Only Modification - A modification in which the loan is converted to interest only payments for a period of time.
	•		Payment Modification - A modification in which the dollar amount of the payment is changed, other than an interest only modification described above.
	•		Combination Modification - Any other type of modification, including the use of multiple categories above.
There were four loans modified as troubled debt restructurings for the three months ended March 31, 2015, in the amount of $384. There were no loans modified as troubled debt restructurings for the three months ended March 31, 2014. During the three months ended March 31, 2015 and 2014, there were no defaults on loans restructured within the last twelve months.

Other_assets

Other assets	3 Months Ended
	Mar. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other assets	6. Other assets:
	The components of other assets at March 31, 2015, and December 31, 2014 are summarized as follows:
		March 31,		December 31,
		2015		2014
	Other real estate owned	$	324	$	561
	Investment in residential housing program		4,178		4,329
	Mortgage servicing rights		623		676
	Bank owned life insurance		30,177		29,983
	Restricted equity securities		2,132		3,687
	Other assets		13,352		13,830
	Total	$	50,786	$	53,066

Fair_value_estimates

Fair value estimates	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair value estimates	7. Fair value estimates:
	The Company uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosure under GAAP. Fair value estimates are calculated without attempting to estimate the value of anticipated future business and the value of certain assets and liabilities that are not considered financial. Accordingly, such assets and liabilities are excluded from disclosure requirements.
	In accordance with FASB ASC 820, “Fair Value Measurements and Disclosures,” fair value is the price that would be received to sell an asset or transfer a liability in an orderly transaction between market participants at the measurement date. Fair value is best determined based upon quoted market prices. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets. In many cases, these values cannot be realized in immediate settlement of the instrument.
	Current fair value guidance provides a consistent definition of fair value, which focuses on exit price in an orderly transaction that is not a forced liquidation or distressed sale between participants at the measurement date under current market conditions. If there has been a significant decrease in the volume and level of activity for the asset or liability, a change in valuation technique or the use of multiple valuation techniques may be appropriate. In such instances, determining the price at which willing market participants would transact at the measurement date under current market conditions depends on the facts and circumstances and requires the use of significant judgment. The fair value is a reasonable point within the range that is most representative of fair value under current market conditions.
	In accordance with GAAP, the Company groups its assets and liabilities generally measured at fair value into three levels based on market information or other fair value estimates in which the assets and liabilities are traded or valued and the reliability of the assumptions used to determine fair value. These levels include:
		•		Level 1: Unadjusted quoted prices of identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date.
		•		Level 2: Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.
		•		Level 3: Significant unobservable inputs that reflect a reporting entity’s own assumptions about the assumptions that market participants would use in pricing an asset or liability.
	An asset’s or liability’s placement in the fair value hierarchy is based on the lowest level of imput that is significant to the fair value estimate.
	The following methods and assumptions were used by the Company to calculate fair values and related carrying amounts of financial instruments:
	Cash and cash equivalents: The carrying values of cash and cash equivalents as reported on the balance sheet approximate fair value.
	Investment securities: The fair values of marketable equity securities are based on quoted market prices from active exchange markets. The fair values of debt securities are based on pricing from a matrix pricing model.
	Loans held for sale: The fair values of loans held for sale are based upon current delivery prices in the secondary mortgage market.
	Net loans: For adjustable-rate loans that re-price frequently and with no significant credit risk, fair values are based on carrying values. The fair values of other non-impaired loans are estimated using discounted cash flow analysis, using interest rates currently offered in the market for loans with similar terms to borrowers of similar credit risk. Fair values for impaired loans are estimated using discounted cash flow analysis determined by the loan review function or underlying collateral values, where applicable.
	In conjunction with the 2013 merger with Penseco Financial Services Corporation (“Penseco”), the loans purchased were recorded at their acquisition date fair value. In order to record the loans at fair value, management made three different types of fair value adjustments. A market rate adjustment was made to adjust for the movement in market interest rates, irrespective of credit adjustments, compared to the stated rates of the acquired loans. A credit adjustment was made on pools of homogeneous loans representing the changes in credit quality of the underlying borrowers from the loan inception to the acquisition date. The credit adjustment on distressed loans represents the portion of the loan balance that has been deemed uncollectible based on the management’s expectations of future cash flows for each respective loan.
	Mortgage servicing rights: To determine the fair value, the Company estimates the present value of future cash flows incorporating assumptions such as cost of servicing, discount rates, prepayment speeds and default rates.
	Accrued interest receivable: The carrying value of accrued interest receivable as reported on the balance sheet approximates fair value.
	Restricted equity securities: The carrying values of restricted equity securities approximate fair value, due to the lack of marketability for these securities.
	Deposits: The fair values of noninterest-bearing deposits and savings, NOW and money market accounts are the amounts payable on demand at the reporting date. The fair value estimates do not include the benefit that results from such low-cost funding provided by the deposit liabilities compared to the cost of borrowing funds in the market. The carrying values of adjustable-rate, fixed-term time deposits approximate their fair values at the reporting date. For fixed-rate time deposits, the present value of future cash flows is used to estimate fair values. The discount rates used are the current rates offered for time deposits with similar maturities.
	The fair value assigned to the core deposit intangible asset represents the future economic benefit of the potential cost savings from acquiring core deposits in the 2013 merger with Penseco compared to the cost of obtaining alternative funding such as brokered deposits from market sources. Management utilized an income valuation approach to present value the estimated future cash savings in order to determine the fair value of the intangible asset.
	Short-term borrowings: The carrying values of short-term borrowings approximate fair value.
	Long-term debt: The fair value of fixed-rate long-term debt is based on the present value of future cash flows. The discount rate used is the current rate offered for long-term debt with the same maturity.
	Accrued interest payable: The carrying value of accrued interest payable as reported on the balance sheet approximates fair value.
	Off-balance sheet financial instruments:
	The majority of commitments to extend credit, unused portions of lines of credit and standby letters of credit carry current market interest rates if converted to loans. Because such commitments are generally unassignable of either the Company or the borrower, they only have value to the Company and the borrower. None of the commitments are subject to undue credit risk. The estimated fair values of off-balance sheet financial instruments are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing. The fair value of off-balance sheet financial instruments was not material at March 31, 2015 and December 31, 2014.
	Assets and liabilities measured at fair value on a recurring basis at March 31, 2015 and December 31, 2014 are summarized as follows:
			Fair Value Measurement Using
	March 31, 2015		Amount		Quoted Prices in			Significant			Significant
					Active Markets for			Other Observable			Unobservable
					Identical Assets			Inputs			Inputs
					(Level 1)			(Level 2)			(Level 3)
	U.S. Government-sponsored enterprises		$	96,148	$			$	96,148		$
	State and Municipals:
	Taxable			17,495					17,495
	Tax-exempt			87,649					87,649
	Mortgage-backed securities:
	U.S. Government agencies			35,400					35,400
	U.S. Government-sponsored enterprises			43,608					43,608
	Total		$	280,300	$			$	280,300		$
					Fair Value Measurement Using
	December 31, 2014		Amount		Quoted Prices in			Significant			Significant
					Active Markets for			Other Observable			Unobservable
					Identical Assets			Inputs			Inputs
					(Level 1)			(Level 2)			(Level 3)
	U.S. Treasury securities		$	48,550	$	48,550					$
	U.S. Government-sponsored enterprises			96,245				$	96,245
	State and Municipals:
	Taxable			17,407					17,407
	Tax-exempt			92,901					92,901
	Corporate debt securities
	Mortgage-backed securities:
	U.S. Government agencies			37,476					37,476
	U.S. Government-sponsored enterprises			47,007					47,007
	Total		$	339,586	$	48,550		$	291,036		$
	Assets and liabilities measured at fair value on a nonrecurring basis at March 31, 2015 and December 31, 2014 are summarized as follows:
					Fair Value Measurement Using
	March 31, 2015		Amount		Quoted Prices in		Significant	Significant
					Active Markets for		Other Observable	Unobservable
					Identical Assets		Inputs	Inputs
					(Level 1)		(Level 2)	(Level 3)
	Impaired loans		$	4,862				$	4,862
	Other real estate owned		$	159				$	159
					Fair Value Measurement Using
	December 31, 2014		Amount		Quoted Prices in		Significant	Significant
Active Markets for					Other Observable		Unobservable
Identical Assets					Inputs		Inputs
(Level 1)					(Level 2)		(Level 3)
Impaired loans		$	4,414				$	4,414
Other real estate owned		$	218				$	218
Fair values of impaired loans are based on 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.
The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which the Company has utilized Level 3 inputs to determine fair value:
		Quantitative Information about Level 3 Fair Value Measurements
March 31, 2015		Fair Value		Valuation Techniques		Unobservable Input	Range
		Estimate					(Weighted Average)
Impaired loans		$	4,862	Appraisal of collateral		Appraisal adjustments		13.3% to 51.1% (23.0%	)
						Liquidation expenses		3.0% to 6.0% (5.4%	)
Other real estate owned		$	159	Appraisal of collateral		Appraisal adjustments		19.7% to 77.9% (37.3%	)
						Liquidation expenses		3.0% to 6.0% (5.0%	)
		Quantitative Information about Level 3 Fair Value Measurements
December 31, 2014		Fair Value		Valuation Techniques		Unobservable Input	Range
		Estimate					(Weighted Average)
Impaired loans		$	4,414	Appraisal of collateral		Appraisal adjustments		2.6% to 61.1% (24.5%	)
						Liquidation expenses		3.0% to 6.0% (5.5%	)
Other real estate owned		$	218	Appraisal of collateral		Appraisal adjustments		19.7% to 47.8% (30.5%	)
						Liquidation expenses		3.0% to 6.0% (5.0%	)
Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various Level 3 Inputs which are not identifiable.
Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range and weighted average of liquidation expenses and other appraisal adjustments are presented as a percent of the appraisal.
The carrying and fair values of the Company’s financial instruments at March 31, 2015 and December 31, 2014 and their placement within the fair value hierarchy are as follows:
							Fair Value Hierarchy
March 31, 2015		Carrying		Fair Value			Quoted Prices			Significant		Significant
		Value					in Active			Other		Unobservable
							Markets for			Observable		Inputs
							Identical Assets			Inputs		(Level 3)
							(level 1)			(level 2)
Financial assets:
Cash and cash equivalents		$	39,631	$	39,631		$	39,631
Investment securities:
Available-for-sale			280,300		280,300					$	280,300
Held-to-maturity			14,172		14,729						14,729
Loans held for sale			3,101		3,107						3,107
Net loans			1,226,365		1,238,915							$	1,238,915
Accrued interest receivable			4,922		4,922						4,922
Mortgage servicing rights			623		1,466						1,466
Restricted equity securities			2,132		2,132						2,132
Total		$	1,571,246	$	1,585,202
Financial liabilities:
Deposits		$	1,416,278	$	1,418,370						1,418,370
Long-term debt			32,318		34,133						34,133
Accrued interest payable			460		460					$	460
Total		$	1,449,056	$	1,452,963
							Fair Value Hierarchy
December 31, 2014		Carrying		Fair Value			Quoted Prices			Significant		Significant
		Value					in Active			Other		Unobservable
							Markets for			Observable		Inputs
							Identical Assets			Inputs		(Level 3)
							(level 1)			(level 2)
Financial assets:
Cash and cash equivalents		$	31,426	$	31,426		$	31,426
Investment securities:
Available-for-sale			339,586		339,586		$	48,550		$	291,036
Held-to-maturity			14,665		15,215						15,215
Loans held for sale			3,486		3,492						3,492
Net loans			1,199,556		1,210,369							$	1,210,369
Accrued interest receivable			5,580		5,580						5,580
Mortgage servicing rights			676		1,466						1,466
Restricted equity securities			3,687		3,687						3,687
Total		$	1,598,662	$	1,610,821
Financial liabilities:
Deposits		$	1,425,558	$	1,427,081						1,427,081
Short-term borrowings			19,557		19,557						19,557
Long-term debt			33,140		34,772						34,772
Accrued interest payable			574		574					$	574
Total		$	1,478,829	$	1,481,984

Employee_benefit_plans

Employee benefit plans	3 Months Ended
	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Employee benefit plans	8. Employee benefit plans:
	The Company provides an Employee Stock Ownership Plan (“ESOP”) and a Retirement Profit Sharing Plan. The Company also maintains a Supplemental Executive Retirement Plan (“SERP”), an Employees’ Pension Plan, which is currently frozen, and a Postretirement Plan Life Insurance plan which was curtailed in 2013.
	Salaries and employee benefits expense includes approximately $279 and $250 relating to the employee benefit plans for the three months ended March 31, 2015 and 2014.
	Components of net periodic benefit income are as follows:
		Pension Benefits
	Three months ended March 31,	2015			2014
	Net periodic pension income:
	Service cost
	Interest cost	$	174		$	169
	Expected return on plan assets		(233	)		(227	)
	Amortization of prior service cost
	Amortization of unrecognized net loss		50			23
	Net periodic pension income	$	(9	)	$	(35	)

Summary_of_significant_account1

Summary of significant accounting policies (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Nature of operations	Nature of operations:
	Peoples Financial Services Corp., a bank holding company incorporated under the laws of Pennsylvania, provides a full range of financial services through its wholly-owned subsidiary, Peoples Security Bank and Trust Company (“Peoples Bank”), including its subsidiaries, Peoples Advisors, LLC and Penseco Realty, Inc. (collectively, the “Company” or “Peoples”). The Company services its retail and commercial customers through twenty-six full-service community banking offices located within the Lackawanna, Lehigh, Luzerne, Monroe, Susquehanna, Wayne and Wyoming Counties of Pennsylvania and Broome County of New York.
Basis of presentation	Basis of presentation:
	The accompanying unaudited consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP’) for interim financial information and with the instructions to Form 10-Q and Article 10-01 of Regulation S-X. In the opinion of management, all normal recurring adjustments necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. All significant intercompany balances and transactions have been eliminated in consolidation. Prior-period amounts are reclassified when necessary to conform to the current year’s presentation. These reclassifications did not have any effect on the operating results or financial position of the Company. The operating results and financial position of the Company for the three months ended and as of March 31, 2015, are not necessarily indicative of the results of operations and financial position that may be expected in the future.
	The preparation of consolidated financial statements in conformity with 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 consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates that are particularly susceptible to material change in the near term relate to the determination of the allowance for loan losses, fair value of financial instruments, the valuation of real estate acquired in connection with foreclosures or in satisfaction of loans, the valuation of deferred tax assets, determination of other-than-temporary impairment losses on securities, impairment of goodwill and fair value of assets acquired and liabilities assumed in business combinations. Actual results could differ from those estimates. For additional information and disclosures required under GAAP, reference is made to the Company’s Annual Report on Form 10-K for the period ended December 31, 2014.
	The Company has evaluated events and transactions occurring subsequent to the balance sheet date of March 31, 2015, for items that should potentially be recognized or disclosed in these consolidated financial statements. The evaluation was conducted through the date these consolidated financial statements were issued.
Recent accounting standards	Recent accounting standards:
	In January 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-01 which eliminates the requirement in Subtopic 225-20 to consider whether an underlying event or transaction is extraordinary, and if so, to separately present the item in the income statement net of tax, after income from continuing operations. Items that are either unusual in nature or infrequently occurring will continue to be reported as a separate component of income from continuing operations. Alternatively, these amounts may still be disclosed in the notes to the financial statements. The same requirement has been expanded to include items that are both unusual and infrequent, i.e., they should be separately presented as a component of income from continuing operations or disclosed in the footnotes. The ASU is effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted from the beginning of the fiscal year of adoption. The adoption of ASU 2015-01 is not expected to have a material effect on the operating results or financial position of the Company.
	In February 2015, the FASB issued ASU 2015-02 which changes the consolidation analysis for all reporting entities. The changes primarily affect the consolidation of limited partnerships and their equivalents (e.g., limited liability corporations), as well as structured vehicles such as collateralized debt obligations. The ASU simplifies U.S. GAAP by eliminating entity specific consolidation guidance for limited partnerships. It also revises other aspects of the consolidation analysis, including how kick-out rights, fee arrangements and related parties are assessed. The amendments rescind the indefinite deferral of FASB Statement 167 for certain investment funds and replace it with a permanent scope exception for money market funds. The ASU is effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted. The adoption of ASU 2015-02 is not expected to have a material effect on the operating results or financial position of the Company.

Other_comprehensive_income_los1

Other comprehensive income (loss) (Tables)	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Components of Accumulated Other Comprehensive Loss	The components of accumulated other comprehensive loss included in stockholders’ equity at March 31, 2015 and December 31, 2014 is as follows:
			March 31,			December 31,
			2015			2014
	Net unrealized gain on investment securities available-for-sale		$	6,227		$	6,292
	Related income taxes			2,179			2,202
	Net of income taxes			4,048			4,090
	Benefit plan adjustments			(7,567	)		(7,567	)
	Related income taxes			(2,648	)		(2,648	)
	Net of income taxes			(4,919	)		(4,919	)
	Accumulated other comprehensive loss		$	(871	)	$	(829	)
Other Comprehensive Income (Loss) and Related Tax Effects	Other comprehensive income (loss) and related tax effects for the three months ended March 31, 2015 and 2014 is as follows:
	Three months ended March 31		2015			2014
	Unrealized gain on investment securities available-for-sale		$	767		$	2,394
	Net gain on the sale of investment securities available-for-sale (1)			(832	)
	Other comprehensive income (loss) gain before taxes			(65	)		2,394
	Income taxes expense (benefit)			(23	)		838
	Other comprehensive income (loss)		$	(42	)	$	1,556
	-1	Represents amounts reclassified out of accumulated comprehensive income and included in gains on sale of investment securities on the consolidated statements of income.

Earnings_per_share_Tables

Earnings per share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Schedule of Earnings Per Share
		2015				2014
	For the three months ended March 31	Basic		Diluted		Basic		Diluted
	Net Income (Numerator)	$	5,044	$	5,044	$	4,698	$	4,698
	Average common shares outstanding (Denominator)		7,548,358		7,548,358		7,550,253		7,580,480
	Earnings per share	$	0.67	$	0.67	$	0.62	$	0.62

Investment_securities_Tables

Investment securities (Tables)	3 Months Ended
	Mar. 31, 2015
Amortized Cost and Fair Value of Investment Securities Aggregated by Investment Category	The amortized cost and fair value of investment securities aggregated by investment category at March 31, 2015 and December 31, 2014 are summarized as follows:
	March 31, 2015	Amortized Cost		Gross		Gross		Fair
				Unrealized		Unrealized		Value
				Gains		Losses
	Available-for-sale:
	U.S. Government-sponsored enterprises	$	95,683	$	487	$	22	$	96,148
	State and municipals:
	Taxable		16,447		1,063		15		17,495
	Tax-exempt		83,133		4,563		47		87,649
	Mortgage-backed securities:
	U.S. Government agencies		35,339		154		93		35,400
	U.S. Government-sponsored enterprises		43,471		286		149		43,608
	Total	$	274,073	$	6,553	$	326	$	280,300
	Held-to-maturity:
	Tax-exempt state and municipals	$	7,370	$	103	$	33	$	7,440
	Mortgage-backed securities:
	U.S. Government agencies		96		1				97
	U.S. Government-sponsored enterprises		6,706		486				7,192
	Total	$	14,172	$	590	$	33	$	14,729
	December 31, 2014	Amortized Cost		Gross		Gross		Fair
				Unrealized		Unrealized		Value
				Gains		Losses
	Available-for-sale:
	U.S. Treasury securities	$	48,393	$	157			$	48,550
	U.S. Government-sponsored enterprises		95,990		337	$	82		96,245
	State and municipals:
	Taxable		16,490		943		26		17,407
	Tax-exempt		87,954		4,971		24		92,901
	Mortgage-backed securities:
	U.S. Government agencies		37,511		132		167		37,476
	U.S. Government-sponsored enterprises		46,956		277		226		47,007
	Total	$	333,294	$	6,817	$	525	$	339,586
	Held-to-maturity:
	Tax-exempt state and municipals	$	7,370	$	105	$	38	$	7,437
	Mortgage-backed securities:
	U.S. Government agencies		100		2				102
	U.S. Government-sponsored enterprises		7,195		481				7,676
	Total	$	14,665	$	588	$	38	$	15,215
Maturity Distribution of Debt Securities	The maturity distribution of the amortized cost and fair value, of debt securities classified as held-to-maturity at March 31, 2015, is summarized as follows:
	March 31, 2015	Amortized		Fair
		Cost		Value
	Within one year
	After one but within five years	$	326	$	334
	After five but within ten years		176		182
	After ten years		6,868		6,924
			7,370		7,440
	Mortgage-backed securities		6,802		7,289
	Total	$	14,172	$	14,729
Fair Value and Unrealized Losses of Investment Securities in Continuous Unrealized Loss Position	The fair value and gross unrealized losses of investment securities with unrealized losses for which an other-than-temporary impairment (“OTTI”) has not been recognized at March 31, 2015 and December 31, 2014, aggregated by investment category and length of time that the individual securities have been in a continuous unrealized loss position, are summarized as follows:
		Less Than 12 Months				12 Months or More				Total
	March 31, 2015	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
		Value		Losses		Value		Losses		Value		Losses
	U.S. Government-sponsored enterprises	$	7,970	$	12	$	2,999	$	10	$	10,969	$	22
	State and municipals:
	Taxable						554		15		554		15
	Tax-exempt		14,234		61		787		19		15,021		80
	Mortgage-backed securities:
	U.S. Government agencies		14,885		62		3,790		31		18,675		93
	U.S. Government-sponsored enterprises		19,098		149						19,098		149
	Total	$	56,187	$	284	$	8,130	$	75	$	64,317	$	359
		Less Than 12 Months				12 Months or More				Total
	December 31, 2014	Fair		Unrealized		Fair		Unrealized		Fair		Unrealized
		Value		Losses		Value		Losses		Value		Losses
	U.S. Government-sponsored enterprises	$	21,228	$	33	$	7,954	$	49	$	29,182	$	82
	State and municipals:
	Taxable						544		26		544		26
	Tax-exempt		4,702		23		2,423		39		7,125		62
	Mortgage-backed securities:
	U.S. Government agencies		20,148		167						20,148		167
	U.S. Government-sponsored enterprises		22,870		226						22,870		226
	Total	$	68,948	$	449	$	10,921	$	114	$	79,869	$	563
Available-for-Sale Securities [Member]
Maturity Distribution of Debt Securities	The maturity distribution of the fair value, which is the net carrying amount, of the debt securities classified as available-for-sale at March 31, 2015, is summarized as follows:
	March 31, 2015	Fair
		Value
	Within one year	$	32,644
	After one but within five years		80,316
	After five but within ten years		28,954
	After ten years		59,378
			201,292
	Mortgage-backed securities		79,008
	Total	$	280,300

Loans_net_and_allowance_for_lo1

Loans, net and allowance for loan losses (Tables)	3 Months Ended
	Mar. 31, 2015
Receivables [Abstract]
Major Classifications of Loans Outstanding	The major classifications of loans outstanding, net of deferred loan origination fees and costs at March 31, 2015 and December 31, 2014 are summarized as follows. Net deferred loan costs were $648 and $651 at March 31, 2015 and December 31, 2014.
		March 31,			December 31,
		2015			2014
	Commercial	$	319,468		$	319,590
	Real estate:
	Commercial		522,432			493,481
	Residential		305,663			310,667
	Consumer		89,605			86,156
	Total	$	1,237,168		$	1,209,894
Changes in Allowance for Loan Losses Account and Related Loans by Major Classification of Loans	The changes in the allowance for loan losses account by major classification of loan for the three months ended March 31, 2015 and 2014 are summarized as follows:
					Real estate
	March 31, 2015	Commercial			Commercial			Residential			Consumer				Total
	Allowance for loan losses:
	Beginning Balance	$	2,321		$	3,037		$	3,690		$	1,290			$	10,338
	Charge-offs		(37	)		(49	)		(199	)		(80	)			(365	)
	Recoveries		61			1			5			13				80
	Provisions		75			98			413			164				750
	Ending balance	$	2,420		$	3,087		$	3,909		$	1,387			$	10,803
					Real estate
	March 31, 2014	Commercial			Commercial			Residential			Consumer				Total
	Allowance for loan losses:
	Beginning Balance	$	2,008		$	2,394		$	3,135		$	1,114			$	8,651
	Charge-offs		(347	)		(28	)		(240	)		(68	)			(683	)
	Recoveries								3			31				34
	Provisions		300			107			350			100				857
	Ending balance	$	1,961		$	2,473		$	3,248		$	1,177			$	8,859
	The allocation of the allowance for loan losses and the related loans by major classifications of loans at March 31, 2015 and December 31, 2014 is summarized as follows:
					Real estate
	March 31, 2015	Commercial			Commercial			Residential			Consumer				Unallocated		Total
	Allowance for loan losses:
	Ending balance	$	2,420		$	3,087		$	3,909		$	1,387					$	10,803
	Ending balance: individually evaluated for impairment		1,263			625			843			90						2,821
	Ending balance: collectively evaluated for impairment		954			2,355			3,066			1,297						7,672
	Ending balance: loans acquired with deteriorated credit quality	$	203		$	107		$			$						$	310
	Loans receivable:
	Ending balance	$	319,468		$	522,432		$	305,663		$	89,605					$	1,237,168
	Ending balance: individually evaluated for impairment		2,631			4,757			3,853			101						11,342
	Ending balance: collectively evaluated for impairment		315,524			516,295			301,752		$	89,504						1,223,075
	Ending balance: loans acquired with deteriorated credit quality	$	1,313		$	1,380		$	58								$	2,751
					Real estate
	December 31, 2014	Commercial			Commercial			Residential			Consumer				Unallocated		Total
	Allowance for loan losses:
	Ending balance	$	2,321		$	3,037		$	3,690		$	1,290					$	10,338
	Ending balance: individually evaluated for impairment		1,072			805			767			38						2,682
	Ending balance: collectively evaluated for impairment		1,081			2,125			2,921			1,252						7,379
	Ending balance: loans acquired with deteriorated credit quality	$	168		$	107		$	2		$						$	277
	Loans receivable:
	Ending balance	$	319,590		$	493,481		$	310,667		$	86,156					$	1,209,894
	Ending balance: individually evaluated for impairment		2,595			5,084			4,001			127						11,807
	Ending balance: collectively evaluated for impairment		315,642			487,024			306,608		$	86,029						1,195,303
	Ending balance: loans acquired with deteriorated credit quality	$	1,353		$	1,373		$	58								$	2,784
Major Classification of Loans Portfolio Summarized by Credit Quality	The following tables present the major classification of loans summarized by the aggregate pass rating and the classified ratings of special mention, substandard and doubtful within the Company’s internal risk rating system at March 31, 2015 and December 31, 2014:
	March 31, 2015:	Pass			Special			Substandard			Doubtful		Total
					Mention
	Commercial	$	307,690		$	6,802		$	4,976				$	319,468
	Real estate:
	Commercial		503,620			9,885			8,927					522,432
	Residential		296,500			1,065			8,098					305,663
	Consumer		89,504						101					89,605
	Total	$	1,197,314		$	17,752		$	22,102				$	1,237,168
	December 31, 2014:	Pass			Special			Substandard			Doubtful		Total
					Mention
	Commercial	$	306,066		$	6,135		$	7,389				$	319,590
	Real estate:
	Commercial		472,270			9,858			11,353					493,481
	Residential		300,299			2,123			8,245					310,667
	Consumer		86,037			13			106					86,156
	Total	$	1,164,672		$	18,129		$	27,093				$	1,209,894
Information Concerning Nonaccrual Loans by Major Loan Classification	Information concerning nonaccrual loans by major loan classification at March 31, 2015 and December 31, 2014 is summarized as follows:
		March 31,			December 31,
		2015			2014
	Commercial	$	2,366		$	1,322
	Real estate:
	Commercial		3,781			3,732
	Residential		3,331			3,523
	Consumer		97			122
	Total	$	9,575		$	8,699
Major Classifications of Loans by Past Due Status	The major classifications of loans by past due status are summarized as follows:
	March 31, 2015	30-59 Days			60-89 Days			Greater			Total Past				Current				Total		Loans > 90
		Past Due			Past Due			than 90			Due								Loans		Days and
								Days													Accruing
	Commercial	$	543		$	43		$	2,366		$	2,952			$	316,516			$	319,468
	Real estate:
	Commercial		1,689			220			3,781			5,690				516,742				522,432
	Residential		3,811			1,065			4,106			8,982				296,681				305,663	$	775
	Consumer		679			170			559			1,408				88,197				89,605		462
	Total	$	6,722		$	1,498		$	10,812		$	19,032			$	1,218,136			$	1,237,168	$	1,237
	December 31, 2014	30-59 Days			60-89 Days			Greater			Total Past				Current				Total		Loans > 90
		Past Due			Past Due			than 90			Due								Loans		Days and
								Days													Accruing
	Commercial	$	898		$	117		$	1,322		$	2,337			$	317,253			$	319,590
	Real estate:
	Commercial		2,100			888			3,868			6,856				486,625				493,481	$	136
	Residential		3,154			1,239			4,585			8,978				301,689				310,667		1,062
	Consumer		848			247			547			1,642				84,514				86,156		425
	Total	$	7,000		$	2,491		$	10,322		$	19,813			$	1,190,081			$	1,209,894	$	1,623
Summarize Information in Concerning to Impaired Loans	The following tables summarize information concerning impaired loans at and for the period ended March 31, 2015, December 31, 2014 and March 31, 2014, by major loan classification:
											For the Quarter Ended
	March 31, 2015	Recorded			Unpaid			Related			Average				Interest
		Investment			Principal			Allowance			Recorded				Income
					Balance						Investment				Recognized
	With no related allowance:
	Commercial	$	2,319		$	3,900					$	2,349			$	20
	Real estate:
	Commercial		2,198			2,936						2,565				19
	Residential		2,272			2,456						2,472				1
	Consumer		11			11						47
	Total		6,800			9,303						7,433				40
	With an allowance recorded:
	Commercial		1,625			1,625		$	1,466			1,597			$	14
	Real estate:
	Commercial		3,939			3,939			732			3,732				17
	Residential		1,639			1,639			843			1,513				10
	Consumer		90			90			90			67
	Total		7,293			7,293			3,131			6,909				41
	Commercial		3,944			5,525			1,466			3,946				34
	Real estate:
	Commercial		6,137			6,875			732			6,297				36
	Residential		3,911			4,095			843			3,985				11
	Consumer		101			101			90			114
	Total	$	14,093		$	16,596		$	3,131		$	14,342			$	81
											For the Year Ended
	December 31, 2014	Recorded			Unpaid			Related			Average				Interest
		Investment			Principal			Allowance			Recorded				Income
					Balance						Investment				Recognized
	With no related allowance:
	Commercial	$	2,379		$	4,084					$	2,669				141
	Real estate:
	Commercial		2,932			3,690						7,944				120
	Residential		2,672			2,857						2,731				4
	Consumer		83			83						94
	Total		8,066			10,714						13,438				265
	With an allowance recorded:
	Commercial		1,569			1,569		$	1,240			1,787			$	58
	Real estate:
	Commercial		3,525			3,525			912			2,293				28
	Residential		1,387			1,387			769			590				10
	Consumer		44			44			38			10				1
	Total		6,525			6,525			2,959			4,680				97
	Commercial		3,948			5,653			1,240			4,456				199
	Real estate:
	Commercial		6,457			7,215			912			10,237				148
	Residential		4,059			4,244			769			3,321				14
	Consumer		127			127			38			104				1
	Total	$	14,591		$	17,239		$	2,959		$	18,118			$	362
											For the Quarter Ended
	March 31, 2014	Recorded			Unpaid			Related			Average				Interest
		Investment			Principal			Allowance			Recorded				Income
					Balance						Investment				Recognized
	With no related allowance:
	Commercial	$	2,008		$	4,762					$	3,493
	Real estate:
	Commercial		9,958			12,746						10,227
	Residential		2,740			3,144						2,872
	Consumer		128			128						109
	Total		14,834			20,780						16,701
	With an allowance recorded:
	Commercial		1,728			1,728		$	1,128			1,964			$	26
	Real estate:
	Commercial		1,404			1,404			542			1,399				18
Residential		261			261			162			523
Consumer
Total		3,393			3,393			1,832			3,886				44
Commercial		3,736			6,490			1,128			5,457				26
Real estate:
Commercial		11,362			14,150			542			11,626				18
Residential		3,001			3,405			162			3,395
Consumer		128			128						109
Total	$	18,227		$	24,173		$	1,832		$	20,587			$	44

Other_assets_Tables

Other assets (Tables)	3 Months Ended
	Mar. 31, 2015
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Components of Other Assets	The components of other assets at March 31, 2015, and December 31, 2014 are summarized as follows:
		March 31,		December 31,
		2015		2014
	Other real estate owned	$	324	$	561
	Investment in residential housing program		4,178		4,329
	Mortgage servicing rights		623		676
	Bank owned life insurance		30,177		29,983
	Restricted equity securities		2,132		3,687
	Other assets		13,352		13,830
	Total	$	50,786	$	53,066

Fair_value_estimates_Tables

Fair value estimates (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis at March 31, 2015 and December 31, 2014 are summarized as follows:
		Fair Value Measurement Using
	March 31, 2015	Amount		Quoted Prices in			Significant			Significant
				Active Markets for			Other Observable			Unobservable
				Identical Assets			Inputs			Inputs
				(Level 1)			(Level 2)			(Level 3)
	U.S. Government-sponsored enterprises	$	96,148	$			$	96,148		$
	State and Municipals:
	Taxable		17,495					17,495
	Tax-exempt		87,649					87,649
	Mortgage-backed securities:
	U.S. Government agencies		35,400					35,400
	U.S. Government-sponsored enterprises		43,608					43,608
	Total	$	280,300	$			$	280,300		$
				Fair Value Measurement Using
	December 31, 2014	Amount		Quoted Prices in			Significant			Significant
				Active Markets for			Other Observable			Unobservable
				Identical Assets			Inputs			Inputs
				(Level 1)			(Level 2)			(Level 3)
	U.S. Treasury securities	$	48,550	$	48,550					$
	U.S. Government-sponsored enterprises		96,245				$	96,245
	State and Municipals:
	Taxable		17,407					17,407
	Tax-exempt		92,901					92,901
	Corporate debt securities
	Mortgage-backed securities:
	U.S. Government agencies		37,476					37,476
	U.S. Government-sponsored enterprises		47,007					47,007
	Total	$	339,586	$	48,550		$	291,036		$
Schedule of Assets and Liabilities Measured at Fair Value on Nonrecurring Basis	Assets and liabilities measured at fair value on a nonrecurring basis at March 31, 2015 and December 31, 2014 are summarized as follows:
				Fair Value Measurement Using
	March 31, 2015	Amount		Quoted Prices in		Significant	Significant
				Active Markets for		Other Observable	Unobservable
				Identical Assets		Inputs	Inputs
				(Level 1)		(Level 2)	(Level 3)
	Impaired loans	$	4,862				$	4,862
	Other real estate owned	$	159				$	159
				Fair Value Measurement Using
	December 31, 2014	Amount		Quoted Prices in		Significant	Significant
				Active Markets for		Other Observable	Unobservable
				Identical Assets		Inputs	Inputs
				(Level 1)		(Level 2)	(Level 3)
	Impaired loans	$	4,414				$	4,414
	Other real estate owned	$	218				$	218
Additional Quantitative Information about Assets Measured at Fair Value on Nonrecurring Basis	The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which the Company has utilized Level 3 inputs to determine fair value:
		Quantitative Information about Level 3 Fair Value Measurements
	March 31, 2015	Fair Value		Valuation Techniques		Unobservable Input	Range
		Estimate					(Weighted Average)
	Impaired loans	$	4,862	Appraisal of collateral		Appraisal adjustments		13.3% to 51.1% (23.0%	)
						Liquidation expenses		3.0% to 6.0% (5.4%	)
	Other real estate owned	$	159	Appraisal of collateral		Appraisal adjustments		19.7% to 77.9% (37.3%	)
						Liquidation expenses		3.0% to 6.0% (5.0%	)
		Quantitative Information about Level 3 Fair Value Measurements
	December 31, 2014	Fair Value		Valuation Techniques		Unobservable Input	Range
		Estimate					(Weighted Average)
	Impaired loans	$	4,414	Appraisal of collateral		Appraisal adjustments		2.6% to 61.1% (24.5%	)
						Liquidation expenses		3.0% to 6.0% (5.5%	)
	Other real estate owned	$	218	Appraisal of collateral		Appraisal adjustments		19.7% to 47.8% (30.5%	)
						Liquidation expenses		3.0% to 6.0% (5.0%	)
Carrying and Fair Values of Financial Instruments	The carrying and fair values of the Company’s financial instruments at March 31, 2015 and December 31, 2014 and their placement within the fair value hierarchy are as follows:
							Fair Value Hierarchy
	March 31, 2015	Carrying		Fair Value			Quoted Prices			Significant		Significant
		Value					in Active			Other		Unobservable
							Markets for			Observable		Inputs
							Identical Assets			Inputs		(Level 3)
							(level 1)			(level 2)
	Financial assets:
	Cash and cash equivalents	$	39,631	$	39,631		$	39,631
	Investment securities:
	Available-for-sale		280,300		280,300					$	280,300
	Held-to-maturity		14,172		14,729						14,729
	Loans held for sale		3,101		3,107						3,107
	Net loans		1,226,365		1,238,915							$	1,238,915
	Accrued interest receivable		4,922		4,922						4,922
	Mortgage servicing rights		623		1,466						1,466
	Restricted equity securities		2,132		2,132						2,132
	Total	$	1,571,246	$	1,585,202
	Financial liabilities:
	Deposits	$	1,416,278	$	1,418,370						1,418,370
	Long-term debt		32,318		34,133						34,133
	Accrued interest payable		460		460					$	460
	Total	$	1,449,056	$	1,452,963
							Fair Value Hierarchy
	December 31, 2014	Carrying		Fair Value			Quoted Prices			Significant		Significant
		Value					in Active			Other		Unobservable
							Markets for			Observable		Inputs
							Identical Assets			Inputs		(Level 3)
							(level 1)			(level 2)
	Financial assets:
	Cash and cash equivalents	$	31,426	$	31,426		$	31,426
	Investment securities:
	Available-for-sale		339,586		339,586		$	48,550		$	291,036
	Held-to-maturity		14,665		15,215						15,215
	Loans held for sale		3,486		3,492						3,492
	Net loans		1,199,556		1,210,369							$	1,210,369
	Accrued interest receivable		5,580		5,580						5,580
	Mortgage servicing rights		676		1,466						1,466
	Restricted equity securities		3,687		3,687						3,687
	Total	$	1,598,662	$	1,610,821
	Financial liabilities:
	Deposits	$	1,425,558	$	1,427,081						1,427,081
	Short-term borrowings		19,557		19,557						19,557
	Long-term debt		33,140		34,772						34,772
	Accrued interest payable		574		574					$	574
	Total	$	1,478,829	$	1,481,984

Employee_benefit_plans_Tables

Employee benefit plans (Tables)	3 Months Ended
	Mar. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Components of Net Periodic Benefit Income	Components of net periodic benefit income are as follows:
		Pension Benefits
	Three months ended March 31,	2015			2014
	Net periodic pension income:
	Service cost
	Interest cost	$	174		$	169
	Expected return on plan assets		(233	)		(227	)
	Amortization of prior service cost
	Amortization of unrecognized net loss		50			23
	Net periodic pension income	$	(9	)	$	(35	)

Other_comprehensive_income_los2

Other comprehensive income (loss) - Components of Accumulated Other Comprehensive Loss (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Equity [Abstract]
Net unrealized gain on investment securities available-for-sale	$6,227	$6,292
Related income taxes	2,179	2,202
Net of income taxes	4,048	4,090
Benefit plan adjustments	-7,567	-7,567
Related income taxes	-2,648	-2,648
Net of income taxes	-4,919	-4,919
Accumulated other comprehensive loss	($871)	($829)

Other_comprehensive_income_los3

Other comprehensive income (loss) - Other Comprehensive Income (Loss) and Related Tax Effects (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized gain on investment securities available-for-sale	$767	$2,394
Other comprehensive income (loss)	-65	2,394
Reclassification Out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Unrealized gain on investment securities available-for-sale	767	2,394
Net gain on the sale of investment securities available-for-sale	-832
Other comprehensive income (loss)	-65	2,394
Income taxes expense (benefit)	-23	838
Other comprehensive income (loss)	($42)	$1,556

Earnings_per_share_Schedule_of

Earnings per share - Schedule of Earnings per Share (Detail) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Net Income (Numerator), Basic	$5,044	$4,698
Average common shares outstanding (Denominator), Basic	7,548,358	7,550,253
Earnings per share, Basic	$0.67	$0.62
Net Income (Numerator), Diluted	$5,044	$4,698
Average common shares outstanding (Denominator), Diluted	7,548,358	7,580,480
Earnings per share, Diluted	$0.67	$0.62

Investment_securities_Amortize

Investment securities - Amortized Cost and Fair Value of Investment Securities Aggregated by Investment Category (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost	$274,073	$333,294
Available for sale, Gross Unrealized Gains	6,553	6,817
Available for sale, Gross Unrealized Losses	326	525
Available for sale, Fair Value	280,300	339,586
Total Amortized Cost, Held to maturity	14,172	14,665
Held to maturity, Gross Unrealized Gains	590	588
Held to maturity, Gross Unrealized Losses	33	38
Held to maturity, Fair Value	14,729	15,215
State and Municipals Tax Exempt Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Total Amortized Cost, Held to maturity	7,370	7,370
Held to maturity, Gross Unrealized Gains	103	105
Held to maturity, Gross Unrealized Losses	33	38
Held to maturity, Fair Value	7,440	7,437
Mortgage-Backed Securities, U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost	35,339	37,511
Available for sale, Gross Unrealized Gains	154	132
Available for sale, Gross Unrealized Losses	93	167
Available for sale, Fair Value	35,400	37,476
Total Amortized Cost, Held to maturity	96	100
Held to maturity, Gross Unrealized Gains	1	2
Held to maturity, Fair Value	97	102
Mortgage-Backed Securities, U.S. Government-Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost	43,471	46,956
Available for sale, Gross Unrealized Gains	286	277
Available for sale, Gross Unrealized Losses	149	226
Available for sale, Fair Value	43,608	47,007
Total Amortized Cost, Held to maturity	6,706	7,195
Held to maturity, Gross Unrealized Gains	486	481
Held to maturity, Fair Value	7,192	7,676
U.S. Government-Sponsored Enterprises State and Municipals [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost	95,683	95,990
Available for sale, Gross Unrealized Gains	487	337
Available for sale, Gross Unrealized Losses	22	82
Available for sale, Fair Value	96,148	96,245
U.S. Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost		48,393
Available for sale, Gross Unrealized Gains		157
Available for sale, Fair Value		48,550
State and Municipals, Taxable [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost	16,447	16,490
Available for sale, Gross Unrealized Gains	1,063	943
Available for sale, Gross Unrealized Losses	15	26
Available for sale, Fair Value	17,495	17,407
State and Municipals, Tax-Exempt [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale, Amortized Cost	83,133	87,954
Available for sale, Gross Unrealized Gains	4,563	4,971
Available for sale, Gross Unrealized Losses	47	24
Available for sale, Fair Value	$87,649	$92,901

Investment_securities_Maturity

Investment securities - Maturity Distribution of Debt Securities Classified as Available-for-Sale (Detail) (USD $)	Mar. 31, 2015
In Thousands, unless otherwise specified
Investments, Debt and Equity Securities [Abstract]
Within one year	$32,644
After one but within five years	80,316
After five but within ten years	28,954
After ten years	59,378
Available for sale securities	201,292
Mortgage-backed securities	79,008
Total	$280,300

Investment_securities_Summary_

Investment securities - Summary of Amortized Cost and Fair Value of Securities by Contractual Maturity (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Investments, Debt and Equity Securities [Abstract]
Amortized Cost, Within one year, Held to Maturity	$0
Amortized Cost, After one but within five years, Held to maturity	326
Amortized Cost, After five but within ten years, Held to maturity	176
Amortized Cost, After ten years, Held to maturity	6,868
Amortized Cost, Held to maturity	7,370
Amortized Cost, Mortgage-backed securities, Held to maturity	6,802
Total Amortized Cost, Held to maturity	14,172	14,665
Fair Value, Within one year, Held to Maturity	0
Fair Value, After one but within five years, Held to maturity	334
Fair Value, After five but within ten years, Held to maturity	182
Fair Value, After ten years, Held to maturity	6,924
Fair Value, Held to maturity	7,440
Fair Value, Mortgage-backed securities, Held to maturity	7,289
Held to maturity, Fair Value	$14,729	$15,215

Investment_securities_Addition

Investment securities - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
	Security		Security
Schedule of Available-for-sale Securities [Line Items]
Carrying value of securities pledged	$207,895,000		216,192,000
Number of investment securities held	63		52
State and Municipals, Tax-Exempt [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of investment securities held	36		16
Number of securities in continuous unrealized loss positions 12 months or longer	2		4
State and Municipals, Taxable [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of investment securities held	1		1
Number of securities in continuous unrealized loss positions 12 months or longer	1		1
Credit Concentration Risk [Member] | Stockholders' Equity, Total [Member]
Schedule of Available-for-sale Securities [Line Items]
Maximum percentage of stockholders' equity exceeded for securities of any individual issuer	10.00%		10.00%
U.S. Government-Sponsored Enterprises State and Municipals [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of investment securities held	3		9
Number of securities in continuous unrealized loss positions 12 months or longer	1		2
Other-than-temporary impairments recognized	$0	$0
Mortgage-Backed Securities, U.S. Government-Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Number of investment securities held	23		26
Number of securities in continuous unrealized loss positions 12 months or longer	2

Investment_securities_Fair_Val

Investment securities - Fair Value and Unrealized Losses of Investment Securities in Continuous Unrealized Loss Position (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	$56,187	$68,948
Less Than 12 Months, Unrealized Losses	284	449
12 Months or More, Fair Value	8,130	10,921
12 Months or More, Unrealized Losses	75	114
Total, Fair Value	64,317	79,869
Total, Unrealized Losses	359	563
State and Municipals, Taxable [Member]
Schedule of Available-for-sale Securities [Line Items]
12 Months or More, Fair Value	554	544
12 Months or More, Unrealized Losses	15	26
Total, Fair Value	554	544
Total, Unrealized Losses	15	26
State and Municipals, Tax-Exempt [Member]
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	14,234	4,702
Less Than 12 Months, Unrealized Losses	61	23
12 Months or More, Fair Value	787	2,423
12 Months or More, Unrealized Losses	19	39
Total, Fair Value	15,021	7,125
Total, Unrealized Losses	80	62
U.S. Government-Sponsored Enterprises State and Municipals [Member]
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	7,970	21,228
Less Than 12 Months, Unrealized Losses	12	33
12 Months or More, Fair Value	2,999	7,954
12 Months or More, Unrealized Losses	10	49
Total, Fair Value	10,969	29,182
Total, Unrealized Losses	22	82
Mortgage-Backed Securities, U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	14,885	20,148
Less Than 12 Months, Unrealized Losses	62	167
12 Months or More, Fair Value	3,790
12 Months or More, Unrealized Losses	31
Total, Fair Value	18,675	20,148
Total, Unrealized Losses	93	167
Mortgage-Backed Securities, U.S. Government-Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Fair Value	19,098	22,870
Less Than 12 Months, Unrealized Losses	149	226
Total, Fair Value	19,098	22,870
Total, Unrealized Losses	$149	$226

Loans_net_and_allowance_for_lo2

Loans, net and allowance for loan losses - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
	SecurityLoan	SecurityLoan
Receivables [Abstract]
Net deferred loan costs	$648,000		$651,000
Loans receivable, related parties, considered as nonaccrual, past due or restructured or potential credit risk	2,967,000	1,924,000	2,933,000
Number of loans modified as troubled debt restructurings	4	0
Number of defaults on loans restructured	0
Loans modified as troubled debt restructurings	$384,000

Loans_net_and_allowance_for_lo3

Loans, net and allowance for loan losses - Major Classifications of Loans Outstanding (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	$1,237,168	$1,209,894
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	319,468	319,590
Real Estate Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	522,432	493,481
Real Estate Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	305,663	310,667
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	$89,605	$86,156

Loans_net_and_allowance_for_lo4

Loans, net and allowance for loan losses - Changes in Allowance for Loan Losses Account by Major Classification of Loan (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Allowance for loan losses:
Beginning Balance	$10,338	$8,651
Charge-offs	-365	-683
Recoveries	80	34
Provisions	750	857
Ending balance	10,803	8,859
Commercial [Member]
Allowance for loan losses:
Beginning Balance	2,321	2,008
Charge-offs	-37	-347
Recoveries	61
Provisions	75	300
Ending balance	2,420	1,961
Real Estate Commercial [Member]
Allowance for loan losses:
Beginning Balance	3,037	2,394
Charge-offs	-49	-28
Recoveries	1
Provisions	98	107
Ending balance	3,087	2,473
Real Estate Residential [Member]
Allowance for loan losses:
Beginning Balance	3,690	3,135
Charge-offs	-199	-240
Recoveries	5	3
Provisions	413	350
Ending balance	3,909	3,248
Consumer [Member]
Allowance for loan losses:
Beginning Balance	1,290	1,114
Charge-offs	-80	-68
Recoveries	13	31
Provisions	164	100
Ending balance	$1,387	$1,177

Loans_net_and_allowance_for_lo5

Loans, net and allowance for loan losses - Allocation of Allowance for Loan Losses and Related Loans by Major Classification of Loans (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Allowance for loan losses:
Ending balance	$10,803	$10,338	$8,859	$8,651
Ending balance: individually evaluated for impairment	2,821	2,682
Ending balance: collectively evaluated for impairment	7,672	7,379
Ending balance: loans acquired with deteriorated credit quality	310	277
Loans receivable:
Ending balance	1,237,168	1,209,894
Ending balance: individually evaluated for impairment	11,342	11,807
Ending balance: collectively evaluated for impairment	1,223,075	1,195,303
Ending balance: loans acquired with deteriorated credit quality	2,751	2,784
Commercial [Member]
Allowance for loan losses:
Ending balance	2,420	2,321	1,961	2,008
Ending balance: individually evaluated for impairment	1,263	1,072
Ending balance: collectively evaluated for impairment	954	1,081
Ending balance: loans acquired with deteriorated credit quality	203	168
Loans receivable:
Ending balance	319,468	319,590
Ending balance: individually evaluated for impairment	2,631	2,595
Ending balance: collectively evaluated for impairment	315,524	315,642
Ending balance: loans acquired with deteriorated credit quality	1,313	1,353
Real Estate Commercial [Member]
Allowance for loan losses:
Ending balance	3,087	3,037	2,473	2,394
Ending balance: individually evaluated for impairment	625	805
Ending balance: collectively evaluated for impairment	2,355	2,125
Ending balance: loans acquired with deteriorated credit quality	107	107
Loans receivable:
Ending balance	522,432	493,481
Ending balance: individually evaluated for impairment	4,757	5,084
Ending balance: collectively evaluated for impairment	516,295	487,024
Ending balance: loans acquired with deteriorated credit quality	1,380	1,373
Real Estate Residential [Member]
Allowance for loan losses:
Ending balance	3,909	3,690	3,248	3,135
Ending balance: individually evaluated for impairment	843	767
Ending balance: collectively evaluated for impairment	3,066	2,921
Ending balance: loans acquired with deteriorated credit quality		2
Loans receivable:
Ending balance	305,663	310,667
Ending balance: individually evaluated for impairment	3,853	4,001
Ending balance: collectively evaluated for impairment	301,752	306,608
Ending balance: loans acquired with deteriorated credit quality	58	58
Consumer [Member]
Allowance for loan losses:
Ending balance	1,387	1,290	1,177	1,114
Ending balance: individually evaluated for impairment	90	38
Ending balance: collectively evaluated for impairment	1,297	1,252
Loans receivable:
Ending balance	89,605	86,156
Ending balance: individually evaluated for impairment	101	127
Ending balance: collectively evaluated for impairment	$89,504	$86,029

Loans_net_and_allowance_for_lo6

Loans, net and allowance for loan losses - Major Classification of Loans Portfolio Summarized by Credit Quality (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	$1,237,168	$1,209,894
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	319,468	319,590
Real Estate Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	522,432	493,481
Real Estate Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	305,663	310,667
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	89,605	86,156
Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	1,197,314	1,164,672
Pass [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	307,690	306,066
Pass [Member] | Real Estate Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	503,620	472,270
Pass [Member] | Real Estate Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	296,500	300,299
Pass [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	89,504	86,037
Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	17,752	18,129
Special Mention [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	6,802	6,135
Special Mention [Member] | Real Estate Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	9,885	9,858
Special Mention [Member] | Real Estate Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	1,065	2,123
Special Mention [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net		13
Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	22,102	27,093
Substandard [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	4,976	7,389
Substandard [Member] | Real Estate Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	8,927	11,353
Substandard [Member] | Real Estate Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	8,098	8,245
Substandard [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net	$101	$106

Loans_net_and_allowance_for_lo7

Loans, net and allowance for loan losses - Information Concerning Nonaccrual Loans by Major Loan Classification (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans, Total	$9,575	$8,699
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans, Total	2,366	1,322
Real Estate Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans, Total	3,781	3,732
Real Estate Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans, Total	3,331	3,523
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans, Total	$97	$122

Loans_net_and_allowance_for_lo8

Loans, net and allowance for loan losses - Major Classifications of Loans by Past Due Status (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$6,722	$7,000
60-89 Days Past Due	1,498	2,491
Greater than 90 Days	10,812	10,322
Total Past Due	19,032	19,813
Current	1,218,136	1,190,081
Total Loans	1,237,168	1,209,894
Loans > 90 Days and Accruing	1,237	1,623
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	543	898
60-89 Days Past Due	43	117
Greater than 90 Days	2,366	1,322
Total Past Due	2,952	2,337
Current	316,516	317,253
Total Loans	319,468	319,590
Real Estate Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,689	2,100
60-89 Days Past Due	220	888
Greater than 90 Days	3,781	3,868
Total Past Due	5,690	6,856
Current	516,742	486,625
Total Loans	522,432	493,481
Loans > 90 Days and Accruing		136
Real Estate Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	3,811	3,154
60-89 Days Past Due	1,065	1,239
Greater than 90 Days	4,106	4,585
Total Past Due	8,982	8,978
Current	296,681	301,689
Total Loans	305,663	310,667
Loans > 90 Days and Accruing	775	1,062
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	679	848
60-89 Days Past Due	170	247
Greater than 90 Days	559	547
Total Past Due	1,408	1,642
Current	88,197	84,514
Total Loans	89,605	86,156
Loans > 90 Days and Accruing	$462	$425

Loans_net_and_allowance_for_lo9

Loans, net and allowance for loan losses - Summarize Information in Concerning to Impaired Loans (Detail) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance, Total	$6,800	$14,834	$8,066
Unpaid Principal Balance, With no related allowance, Total	9,303	20,780	10,714
Average Recorded Investment, With no related allowance, Total	7,433	16,701	13,438
Interest Income Recognized, With no related allowance, Total	40		265
Recorded Investment, With an allowance recorded, Total	7,293	3,393	6,525
Unpaid Principal Balance, With an allowance recorded, Total	7,293	3,393	6,525
Related Allowance, With an allowance recorded, Total	3,131	1,832	2,959
Average Recorded Investment, With an allowance recorded, Total	6,909	3,886	4,680
Interest Income Recognized, With an allowance recorded, Total	41	44	97
Recorded Investment, Total	14,093	18,227	14,591
Unpaid Principal Balance, Total	16,596	24,173	17,239
Related Allowance, With an allowance recorded, Total	3,131	1,832	2,959
Average Recorded Investment, Total	14,342	20,587	18,118
Interest Income Recognized, Total	81	44	362
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance, Total	2,319	2,008	2,379
Unpaid Principal Balance, With no related allowance, Total	3,900	4,762	4,084
Average Recorded Investment, With no related allowance, Total	2,349	3,493	2,669
Interest Income Recognized, With no related allowance, Total	20		141
Recorded Investment, With an allowance recorded, Total	1,625	1,728	1,569
Unpaid Principal Balance, With an allowance recorded, Total	1,625	1,728	1,569
Related Allowance, With an allowance recorded, Total	1,466	1,128	1,240
Average Recorded Investment, With an allowance recorded, Total	1,597	1,964	1,787
Interest Income Recognized, With an allowance recorded, Total	14	26	58
Recorded Investment, Total	3,944	3,736	3,948
Unpaid Principal Balance, Total	5,525	6,490	5,653
Related Allowance, With an allowance recorded, Total	1,466	1,128	1,240
Average Recorded Investment, Total	3,946	5,457	4,456
Interest Income Recognized, Total	34	26	199
Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance, Total	2,198	9,958	2,932
Unpaid Principal Balance, With no related allowance, Total	2,936	12,746	3,690
Average Recorded Investment, With no related allowance, Total	2,565	10,227	7,944
Interest Income Recognized, With no related allowance, Total	19		120
Recorded Investment, With an allowance recorded, Total	3,939	1,404	3,525
Unpaid Principal Balance, With an allowance recorded, Total	3,939	1,404	3,525
Related Allowance, With an allowance recorded, Total	732	542	912
Average Recorded Investment, With an allowance recorded, Total	3,732	1,399	2,293
Interest Income Recognized, With an allowance recorded, Total	17	18	28
Recorded Investment, Total	6,137	11,362	6,457
Unpaid Principal Balance, Total	6,875	14,150	7,215
Related Allowance, With an allowance recorded, Total	732	542	912
Average Recorded Investment, Total	6,297	11,626	10,237
Interest Income Recognized, Total	36	18	148
Real Estate Residential [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance, Total	2,272	2,740	2,672
Unpaid Principal Balance, With no related allowance, Total	2,456	3,144	2,857
Average Recorded Investment, With no related allowance, Total	2,472	2,872	2,731
Interest Income Recognized, With no related allowance, Total	1		4
Recorded Investment, With an allowance recorded, Total	1,639	261	1,387
Unpaid Principal Balance, With an allowance recorded, Total	1,639	261	1,387
Related Allowance, With an allowance recorded, Total	843	162	769
Average Recorded Investment, With an allowance recorded, Total	1,513	523	590
Interest Income Recognized, With an allowance recorded, Total	10		10
Recorded Investment, Total	3,911	3,001	4,059
Unpaid Principal Balance, Total	4,095	3,405	4,244
Related Allowance, With an allowance recorded, Total	843	162	769
Average Recorded Investment, Total	3,985	3,395	3,321
Interest Income Recognized, Total	11		14
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment, With no related allowance, Total	11	128	83
Unpaid Principal Balance, With no related allowance, Total	11	128	83
Average Recorded Investment, With no related allowance, Total	47	109	94
Recorded Investment, With an allowance recorded, Total	90		44
Unpaid Principal Balance, With an allowance recorded, Total	90		44
Related Allowance, With an allowance recorded, Total	90		38
Average Recorded Investment, With an allowance recorded, Total	67		10
Interest Income Recognized, With an allowance recorded, Total			1
Recorded Investment, Total	101	128	127
Unpaid Principal Balance, Total	101	128	127
Related Allowance, With an allowance recorded, Total	90		38
Average Recorded Investment, Total	114	109	104
Interest Income Recognized, Total			$1

Other_assets_Components_of_Oth

Other assets - Components of Other Assets (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other real estate owned	$324	$561
Investment in residential housing program	4,178	4,329
Mortgage servicing rights	623	676
Bank owned life insurance	30,177	29,983
Restricted equity securities	2,132	3,687
Other assets	13,352	13,830
Total	$50,786	$53,066

Fair_value_estimates_Additiona

Fair value estimates - Additional Information (Detail) (USD $)	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Commitments subject to undue credit risk	$0

Fair_value_estimates_Schedule_

Fair value estimates - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$280,300	$339,586
U.S. Government-Sponsored Enterprises State and Municipals [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	96,148	96,245
State and Municipals, Taxable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	17,495	17,407
State and Municipals, Tax-Exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	87,649	92,901
Mortgage-Backed Securities, U.S. Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	35,400	37,476
Mortgage-Backed Securities, U.S. Government-Sponsored Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	43,608	47,007
U.S. Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value		48,550
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value		48,550
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Treasury Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value		48,550
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	280,300	291,036
Significant Other Observable Inputs (Level 2) [Member] | U.S. Government-Sponsored Enterprises State and Municipals [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	96,148	96,245
Significant Other Observable Inputs (Level 2) [Member] | State and Municipals, Taxable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	17,495	17,407
Significant Other Observable Inputs (Level 2) [Member] | State and Municipals, Tax-Exempt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	87,649	92,901
Significant Other Observable Inputs (Level 2) [Member] | Mortgage-Backed Securities, U.S. Government Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	35,400	37,476
Significant Other Observable Inputs (Level 2) [Member] | Mortgage-Backed Securities, U.S. Government-Sponsored Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$43,608	$47,007

Fair_value_estimates_Schedule_1

Fair value estimates - Schedule of Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (Detail) (Nonrecurring Fair Value Measurements [Member], USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$4,862	$4,414
Other real estate owned	159	218
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	4,862	4,414
Other real estate owned	$159	$218

Fair_value_estimates_Additiona1

Fair value estimates - Additional Quantitative Information about Assets Measured at Fair Value on Nonrecurring Basis (Detail) (Nonrecurring Fair Value Measurements [Member], Significant Unobservable Inputs (Level 3) [Member], USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Estimate	$159	$218
Valuation Techniques	Appraisal of collateral
Unobservable Input	Appraisal adjustments
Range and weighted average of appraisal adjustments	37.30%	30.50%
Range and weighted average of liquidation expenses	5.00%	5.00%
Other Real Estate Owned [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range and weighted average of appraisal adjustments	19.70%	19.70%
Range and weighted average of liquidation expenses	3.00%	3.00%
Other Real Estate Owned [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range and weighted average of appraisal adjustments	77.90%	47.80%
Range and weighted average of liquidation expenses	6.00%	6.00%
Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Estimate	$4,862	$4,414
Valuation Techniques	Appraisal of collateral
Unobservable Input	Appraisal adjustments
Range and weighted average of appraisal adjustments	23.00%	24.50%
Range and weighted average of liquidation expenses	5.40%	5.50%
Impaired Loans [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range and weighted average of appraisal adjustments	13.30%	2.60%
Range and weighted average of liquidation expenses	3.00%	3.00%
Impaired Loans [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Range and weighted average of appraisal adjustments	51.10%	61.10%
Range and weighted average of liquidation expenses	6.00%	6.00%

Fair_value_estimates_Carrying_

Fair value estimates - Carrying and Fair Values of Financial Instruments (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Investment securities:
Available-for-sale	$280,300	$339,586
Held-to-maturity	14,729	15,215
Mortgage servicing rights	623	676
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial assets:
Cash and cash equivalents	39,631	31,426
Investment securities:
Available-for-sale		48,550
Significant Other Observable Inputs (Level 2) [Member]
Investment securities:
Available-for-sale	280,300	291,036
Held-to-maturity	14,729	15,215
Loans held for sale	3,107	3,492
Accrued interest receivable	4,922	5,580
Mortgage servicing rights	1,466	1,466
Restricted equity securities	2,132	3,687
Financial liabilities:
Deposits	1,418,370	1,427,081
Short-term borrowings		19,557
Long-term debt	34,133	34,772
Accrued interest payable	460	574
Significant Unobservable Inputs (Level 3) [Member]
Investment securities:
Net loans	1,238,915	1,210,369
Carrying Value [Member]
Financial assets:
Cash and cash equivalents	39,631	31,426
Investment securities:
Available-for-sale	280,300	339,586
Held-to-maturity	14,172	14,665
Loans held for sale	3,101	3,486
Net loans	1,226,365	1,199,556
Accrued interest receivable	4,922	5,580
Mortgage servicing rights	623	676
Restricted equity securities	2,132	3,687
Assets, Fair Value Disclosure	1,571,246	1,598,662
Financial liabilities:
Deposits	1,416,278	1,425,558
Short-term borrowings		19,557
Long-term debt	32,318	33,140
Accrued interest payable	460	574
Liabilities, total	1,449,056	1,478,829
Fair Value [Member]
Financial assets:
Cash and cash equivalents	39,631	31,426
Investment securities:
Available-for-sale	280,300	339,586
Held-to-maturity	14,729	15,215
Loans held for sale	3,107	3,492
Net loans	1,238,915	1,210,369
Accrued interest receivable	4,922	5,580
Mortgage servicing rights	1,466	1,466
Restricted equity securities	2,132	3,687
Assets, Fair Value Disclosure	1,585,202	1,610,821
Financial liabilities:
Deposits	1,418,370	1,427,081
Short-term borrowings		19,557
Long-term debt	34,133	34,772
Accrued interest payable	460	574
Liabilities, total	$1,452,963	$1,481,984

Employee_benefit_plans_Additio

Employee benefit plans - Additional Information (Detail) (Employee Benefit Plans [Member], USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Employee Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Salaries and employee benefits expense	$279	$250

Employee_benefit_plans_Compone

Employee benefit plans - Components of Net Periodic Benefit Income (Detail) (Pension Benefits [Member], USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Pension Benefits [Member]
Net periodic pension income:
Service cost	$0	$0
Interest cost	174	169
Expected return on plan assets	-233	-227
Amortization of prior service cost	0	0
Amortization of unrecognized net loss	50	23
Net periodic pension income	($9)	($35)