Franklin Financial Services (FRAF) 10-K 12 Mar 18 2017 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Feb. 28, 2018	Jun. 30, 2017
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2,017
Entity Registrant Name	FRANKLIN FINANCIAL SERVICES CORP /PA/
Entity Central Index Key	723,646
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		4,364,433
Entity Current Reporting Status	Yes
Entity Public Float			$ 129,621,856
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Trading Symbol	fraf

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 21,433	$ 16,888
Interest-bearing deposits in other banks	37,170	19,777
Total cash and cash equivalents	58,603	36,665
Investment securities available for sale, at fair value	127,336	143,875
Restricted stock	456	1,767
Loans held for sale	442	540
Loans	943,700	893,873
Allowance for loan losses	(11,792)	(11,075)
Net Loans	931,908	882,798
Premises and equipment, net	13,741	14,058
Bank owned life insurance	22,980	22,459
Goodwill	9,016	9,016
Other real estate owned	2,598	4,915
Deferred tax asset, net	5,803	5,844
Other assets	6,930	5,506
Total assets	1,179,813	1,127,443
Deposits
Non-interest bearing checking	196,853	170,345
Money management, savings and interest checking	774,857	737,140
Time	75,471	74,635
Total deposits	1,047,181	982,120
Short-term borrowings		24,270
Other liabilities	17,488	4,560
Total liabilities	1,064,669	1,010,950
Shareholders' equity
Common stock, $1 par value per share, 15,000,000 shares authorized with 4,689,099 shares issued and 4,354,788 shares outstanding at December 31, 2017 and 4,688,349 shares issued and 4,316,836 shares outstanding at December 31, 2016	4,689	4,688
Capital stock without par value, 5,000,000 shares authorized with no shares issued and outstanding
Additional paid-in capital	40,396	39,752
Retained earnings	82,218	83,081
Accumulated other comprehensive loss	(6,028)	(4,215)
Treasury stock, 334,311 shares at December 31, 2017 and 371,513 shares at December 31, 2016, at cost	(6,131)	(6,813)
Total shareholders' equity	115,144	116,493
Total liabilities and shareholders' equity	$ 1,179,813	$ 1,127,443

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
Consolidated Balance Sheets [Abstract]
Common Stock, Par or Stated Value Per Share	$ 1	$ 1
Common Stock, Shares Authorized	15,000,000	15,000,000
Common Stock, Shares, Issued	4,689,099	4,688,349
Common Stock, Shares, Outstanding	4,354,788	4,316,836
Capital stock, no par value
Capital Stock, Shares Authorized	5,000,000	5,000,000
Capital Stock, Shares, Issued	0	0
Capital Stock, Shares, Outstanding	0	0
Treasury Stock, Shares	334,311	371,513

Consolidated Statements Of Inco

Consolidated Statements Of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Interest income
Loans, including fees	$ 36,274	$ 32,992	$ 30,279
Interest and dividends on investments:
Taxable interest	2,062	2,271	2,415
Tax exempt interest	1,122	1,412	1,607
Dividend income	26	17	67
Deposits and obligations of other banks	401	287	247
Total interest income	39,885	36,979	34,615
Interest expense
Deposits	2,475	2,212	2,367
Short-term borrowings	16	33	4
Total interest expense	2,491	2,245	2,371
Net interest income	37,394	34,734	32,244
Provision for loan losses	670	3,775	1,285
Net interest income after provision for loan losses	36,724	30,959	30,959
Noninterest income
Investment and trust services fees	5,370	4,969	5,036
Loan service charges	831	714	1,002
Deposit service charges and fees	2,399	2,468	2,318
Other service charges and fees	1,327	1,257	1,239
Debit card income	1,543	1,469	1,368
Increase in cash surrender value of life insurance	521	531	551
Net (loss) gain on sale of other real estate owned	(26)	(31)	32
OTTI losses on debt securities		(40)	(20)
Gain on conversion of investment security			728
Securities gains, net	3	22	8
Other	221	246	390
Total noninterest income	12,189	11,605	12,652
Noninterest Expense
Salaries and employee benefits	18,871	18,276	17,186
Occupancy, furniture and equipment, net	3,152	3,120	3,164
Advertising	1,197	1,155	1,105
Legal and professional	1,813	1,508	1,093
Data processing	2,229	2,093	2,051
Pennsylvania bank shares tax	971	902	815
Intangible amortization			181
FDIC Insurance	372	580	663
ATM/debit card processing	959	855	830
Foreclosed real estate	151	1,333	462
Telecommunications	418	429	555
Legal reserve	10,000
Other	3,039	2,924	3,031
Total noninterest expense	43,172	33,175	31,136
Income before federal income taxes	5,741	9,389	12,475
Federal income tax expense	3,565	1,302	2,271
Net income	$ 2,176	$ 8,087	$ 10,204
Per share
Basic earnings per share	$ 0.50	$ 1.88	$ 2.40
Diluted earnings per share	0.50	1.88	2.40
Cash dividends declared	$ 0.93	$ 0.82	$ 0.74

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Consolidated Statements Of Comprehensive Income [Abstract]
Net income		$ 2,176	$ 8,087	$ 10,204
Securities:
Unrealized gains (losses) arising during the period	[1]	177	(1,176)	(498)
Reclassification for net (gains) losses and OTTI included in net income	[1]	(3)	18	(716)
Net unrealized gains (losses)	[1]	174	(1,158)	(1,214)
Tax effect	[1]	(60)	394	413
Net of tax amount	[1]	114	(764)	(801)
Derivatives
Unrealized gains (losses) arising during the period	[2]			31
Reclassification for net losses included in net income	[2]			160
Net unrealized gains	[2]			191
Tax effect	[2]			(65)
Net of tax amount	[2]			126
Pension
Change in plan assets and benefit obligations	[3]	(1,965)	(638)	(416)
Reclassification for net actuarial losses included in net income	[3]	547	1,049	497
Net unrealized (losses) gains	[3]	(1,418)	411	81
Tax effect	[3]	483	(140)	(28)
Net of tax amount	[3]	(935)	271	53
Total other comprehensive loss		(821)	(493)	(622)
Total Comprehensive Income		1,355	7,594	9,582
Reclassification adjustment / Statement line item: Tax expense (benefit)
Securities / securities (gains) losses and OTTI losses, net		1	(6)	243
Derivatives				(54)
Pension / Salary & Benefits		$ (186)	$ (357)	$ (169)
[1]	Securities / securities (gains) losses and OTTI losses, net $1, ($6), and $243 for years ended December 31, 2017, 2016, and 2015, respectively.
[2]	Derivatives $-, $-, and ($54) for years ended December 31, 2017, 2016, and 2015, respectively.
[3]	Pension / Salary & Benefits ($186), ($356), and ($169), for years ended December 31, 2017, 2016, and 2015, respectively.

Consolidated Statements Of Chan

Consolidated Statements Of Changes In Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2014	$ 4,607	$ 37,504	$ 71,452	$ (3,100)	$ (6,942)	$ 103,521
Net income			10,204			10,204
Other comprehensive income				(622)		(622)
Cash dividends declared			(3,139)			(3,139)
Treasury shares issued under employee stock option/purchase plans		6			86	92
Common stock issued under dividend reinvestment plan	52	1,194				1,246
Stock option compensation expense		74				74
Balance at Dec. 31, 2015	4,659	38,778	78,517	(3,722)	(6,856)	111,376
Net income			8,087			8,087
Other comprehensive income				(493)		(493)
Cash dividends declared			(3,523)			(3,523)
Acquisition of 34,048 shares of treasury stock					(795)	(795)
Treasury shares issued under employee stock option/purchase plans		4			16	20
Treasury shares issued under dividend reinvestment plan		296			822	1,118
Common stock issued under dividend reinvestment plan	25	528				553
Common stock issued under incentive stock option plan	4	58				62
Stock option compensation expense		88				88
Balance at Dec. 31, 2016	4,688	39,752	83,081	(4,215)	(6,813)	116,493
Net income			2,176			2,176
Other comprehensive income				(821)		(821)
Cash dividends declared			(4,031)			(4,031)
Treasury shares issued under employee stock option/purchase plans		32			125	157
Treasury shares issued under dividend reinvestment plan		434			557	991
Common stock issued under incentive stock option plan	1	17				18
Revaluation of net deferred tax assets			992	(992)
Stock option compensation expense		161				161
Balance at Dec. 31, 2017	$ 4,689	$ 40,396	$ 82,218	$ (6,028)	$ (6,131)	$ 115,144

Consolidated Statements Of Cha7

Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Consolidated Statements Of Changes In Shareholders' Equity [Abstract]
Common Stock, Dividends, Per Share, Declared	$ 0.93	$ 0.82	$ 0.74
Acquisition of treasury stock, shares		34,048
Treasury shares issued under stock option plan, shares	6,827	907	4,794
Treasury shares issued under dividend reinvestment plan, shares	30,375	45,068
Common stock issued under dividend reinvestment plan, shares		25,230	52,755
Common stock issued under stock option plans, shares	750	3,800

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities
Net income	$ 2,176	$ 8,087	$ 10,204
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,325	1,345	1,328
Net amortization of loans and investment securities	1,730	1,617	1,659
Amortization and net change in mortgage servicing rights valuation	55	55	34
Amortization of intangibles			181
Provision for loan losses	670	3,775	1,285
Gain on sales of securities	(3)	(22)	(8)
Impairment write-down on securities recognized in earnings		40	20
Gain on conversion of investment security			(728)
Legal reserve	10,000
Loans originated for sale	(9,887)	(8,972)	(9,121)
Proceeds from sale of loans	9,985	8,893	9,049
Write-down on premise and equipment available for sale	45	69	60
Write-down of other real estate owned	83	1,209	365
Net loss on sale or disposal of other real estate/other repossessed assets	26	31	(32)
Increase in cash surrender value of life insurance	(521)	(531)	(551)
Gain from surrender of life insurance policy		(76)	(103)
Stock option compensation	161	88	74
Decrease in other assets	293	1,174	2,443
Increase (decrease) in other liabilities	945	(1,094)	(2,758)
Deferred tax benefit	(831)	(832)	(111)
Net cash provided by operating activities	16,252	14,856	13,290
Cash flows from investing activities
Proceeds from sales and calls of investment securities available for sale	1,205	3,825	1,381
Proceeds from maturities and pay-downs of securities available for sale	22,424	25,393	30,123
Purchase of investment securities available for sale	(8,602)	(985)	(21,688)
Net decrease (increase) in restricted stock	1,311	(16,605)	(344)
Net increase in loans	(49,911)	(114,780)	(58,496)
Proceeds from sale of other real estate/other repossessed assets	2,298	625	508
Proceeds from surrender of life insurance policy		436	389
Proceeds from the sale of other assets	154
Capital expenditures	(1,119)	(579)	(1,041)
Net cash used in investing activities	(32,240)	(102,670)	(49,168)
Cash flows from financing activities
Net increase in demand deposits, interest-bearing checking, and savings accounts	64,225	74,704	50,199
Net increase (decrease) in time deposits	836	(11,096)	(12,868)
Net decrease in repurchase agreements			(9,079)
Net (decrease) increase in short-term borrowings	24,270	(24,270)
Dividends paid	(4,031)	(3,523)	(3,139)
Purchase of Treasury shares		(795)
Cash received from option exercises	175	82	92
Common stock issued under dividend reinvestment plan	991	1,671	1,246
Net cash provided by financing activities	37,926	85,313	26,451
Increase (decrease) in cash and cash equivalents	21,938	(2,501)	(9,427)
Cash and cash equivalents as of January 1	36,665	39,166	48,593
Cash and cash equivalents as of December 31	58,603	36,665	39,166
Supplemental Disclosures of Cash Flow Information
Cash paid during the year for: Interest on deposits and other borrowed funds	2,458	2,253	2,416
Cash paid during the year for: Income taxes	3,955	2,100	3,016
Noncash Activities:
Loans transferred to Other Real Estate	$ 90	$ 329	$ 3,626

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Summary Of Significant Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	Note 1. Summary of Significant Accounting Policies  The accounting policies of Franklin Financial Services Corporation and its subsidiaries conform to U.S. generally accepted accounting principles and to general industry practices. A summary of the more significant accounting policies, which have been consistently applied in the preparation of the accompanying consolidated financial statements, follows:  Principles of Consolidation – The consolidated financial statements include the accounts of Franklin Financial Services Corporation (the Corporation) and its wholly-owned subsidiaries; Farmers and Merchants Trust Company of Chambersburg and Franklin Future Fund Inc. Farmers and Merchants Trust Company of Chambersburg is a commercial bank (the Bank) that has one wholly-owned subsidiary, Franklin Financial Properties Corp., which holds real estate assets that are leased by the Bank. Franklin Future Fund Inc. is a non-bank investment company that makes venture capital investments within the Corporation’s primary market area. The activities of non-bank entities are not significant to the consolidated totals. All significant intercompany transactions have been eliminated in consolidation. Management has evaluated subsequent events for potential recognition and/or disclosure through the date these consolidated financial statements were issued.  Nature of Operations – The Corporation conducts substantially all of its business through its subsidiary bank, Farmers and Merchants Trust Company of Chambersburg, which serves its customer base through twenty-two community-banking offices located in Franklin, Cumberland, Fulton and Huntingdon Counties, Pennsylvania. These counties are considered to be the Corporation’s primary market area, but it may do business in the greater South-Central Pennsylvania market. The Bank is a community-oriented commercial bank that emphasizes customer service and convenience. As part of its strategy, the Bank has sought to develop a variety of products and services that meet the needs of both its retail and commercial customers. The Corporation and the Bank are subject to the regulations of various federal and state agencies and undergo periodic examinations by these regulatory authorities.  Use of Estimates in the Preparation of Financial Statements – The preparation of financial statements in conformity with generally accepted accounting principles requires M anagement to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, and the assessment of other than temporary impairment of investment securities and the valuation allowance on the deferred tax asset.  Significant Group Concentrations of Credit Risk – Most of the Corporation’s activities are with customers located within its primary market area. Note 4 of the consolidated financial statements shows the types of securities in which the Corporation invests. Note 5 of the consolidated financial statements shows the types of lending in which the Corporation engages. The Corporation does not have any significant concentrations of any one industry or customer.  Statement of Cash Flows – For purposes of reporting cash flows, cash and cash equivalents include Cash and due from banks, Interest-bearing deposits in other banks and Federal funds sold. Generally, Federal funds are purchased and sold for one-day periods .  Investment Securities – Management classifies its securities at the time of purchase as available for sale or held to maturity. At December 31, 201 7 and 201 6 , all securities were classified as available for sale, meaning that the Corporation intends to hold them for an indefinite period of time, but not necessarily to maturity. Available for sale securities are stated at estimated fair value, adjusted for amortization of premiums and accretion of discounts which are recognized as adjustments of interest income through call date or maturity. The related unrealized holding gains and losses are reported as other comprehensive income or loss, net of tax, until realized. Declines in the fair value of held-to-maturity and available-for-sale securities to amounts below cost that are deemed to be other-than-temporary are reflected in earnings as realized losses. In estimating the other-than-temporary impairment losses, M anagement considers (1) the length of time and the extent to which the fair value has been less than cost, (2) the financial condition and near-term prospects of the issuer, and (3) determines if the Corporation does not intend to sell the security or it if is not more likely than not that the Corporation will be required to sell the security before recovery of its amortized cost. When a determination is made that an other-than-temporary impairment exists but the Corporation does not intend to sell the debt security and it is not more likely than not that it will be required to sell the debt security prior to its anticipated recovery, the other-than-temporary impairment is separated into (a) the amount of the total other-than-temporary impairment related to a decrease in cash flows expected to be collected from the debt security (the credit loss) and (b) the amount of the total other-than-temporary impairment related to all other factors. The amount of the total other-than-temporary impairment related to the credit loss is recognized in earnings. The amount of the total other-than-temporary impairment related to all other factors is recognized in other comprehensive income. Realized securities gains and losses are computed using the specific identification method. Gains or losses on the disposition of investment securities are based on the net proceeds and the adjusted carrying amount of the specific security sold. Any decision to sell a security classified as available for sale would be based on various factors, including significant movement in interest rates, changes in maturity or mix of the Bank’s assets and liabilities, liquidity needs, regulatory capital considerations and other similar factors.  Restricted Stock – – Restricted stock, which is carried at cost, consists of stock of the Federal Home Loan Bank of Pittsburgh (FHLB) and Atlantic Central Bankers Bank (ACBB). The Bank held $456 thousand of restricted stock at the end of 2017. With the exception of $30 thousand, this investment represents stock in the FHLB that the Bank is required to hold in order to be a member of FHLB and is carried at a cost of $100 per share. FHLB stock is divided into two classes: membership stock and activity stock, which is based on outstanding loan balances. Federal law requires a member institution of the FHLB to hold FHLB stock according to a predetermined formula. Management evaluates the restricted stock for impairment in accordance with ASC Topic 320. Management’s determination of whether these investments are impaired is based on their assessment of the ultimate recoverability of their cost rather than by recognizing temporary declines in value. The determination of whether a decline affects the ultimate recoverability of their cost is influenced by criteria such as (1) the significance of the decline in net assets of the banks as compared to the capital stock amount for the banks and the length of time this situation has persisted, (2) commitments by the banks to make payments required by law or regulation and (3) the impact of legislative and regulatory changes on institutions and, accordingly, on the customer base of the banks. As a government sponsored entity, FHLB has the ability to raise funding through the U.S. Treasury that can be used to support its operations. There is not a public market for FHLB or ACBB stock and the benefits of membership (e.g., liquidity and low cost funding) add value to the stock beyond purely financial measures. Management intends to remain a member of the FHLB and believes that it will be able to fully recover the cost basis of this investment. Management believes no impairment charge is necessary related to the FHLB or ACBB restricted stock as of December 31, 2017 .  Financial Derivatives – The Corporation may us e interest rate swaps to manage interest rate risk associated with variable-rate funding sources. All such derivatives are recognized on the balance sheet at estimated fair value in other assets or liabilities as appropriate. To the extent the derivatives are effective and meet the requirements for hedge accounting, changes in fair value are recognized in other comprehensive income with income statement reclassification occurring as the hedged item affects earnings. Conversely, changes in fair value attributable to ineffectiveness or to derivatives that do not qualify as hedges are recognized as they occur in the income statement’s interest expense account associated with the hedged item.  Interest rate derivative financial instruments receive hedge accounting treatment only if they are designated as a hedge and are expected to be, and are, effective in substantially reducing interest rate risk arising from the assets and liabilities identified as exposing the Corporation to risk. Those derivative financial instruments that do not meet the hedging criteria discussed below would be classified as trading activities and would be recorded at fair value with changes in fair value recorded in income. Derivative hedge contracts must meet specific effectiveness tests (i.e., over time the change in their fair values due to the designated hedge risk must be within 80 to 125 percent of the opposite change in the fair values of the hedged assets or liabilities). Changes in fair value of the derivative financial instruments must be effective at offsetting changes in the fair value of the hedged items due to the designated hedge risk during the term of the hedge. Further, if the underlying financial instrument differs from the hedged asset or liability, there must be a clear economic relationship between the prices of the two financial instruments. If periodic assessments indicate derivatives no longer provide an effective hedge, the derivatives contracts would be closed out and settled or classified as a trading activity.  Cash flows resulting from the derivative financial instruments that are accounted for as hedges of assets and liabilities are classified in the cash flow statement in the same category as the cash flows of the items being hedged.  Loans – Loans, that M anagement has the intent and ability to hold for the foreseeable future or until maturity or payoff, are stated at the outstanding unpaid principal balances, net of any deferred fees. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the yield (interest income) of the related loans using the interest method. The Corporation is am ortizing these amounts over the contractual life of the loan.  The accrual of interest is generally discontinued when the contractual payment of principal or interest has become 90 days past due or M anagement has serious doubts about further collectability of principal or interest, even though the loan is currently performing. A loan may remain on accrual status if it is in the process of collection and is either guaranteed or well secured. When a loan is placed on nonaccrual status, unpaid interest credited to income in the current year is reversed and unpaid interest accrued in a prior year is charged against the allowance for loan losses. Payments received on nonaccrual loans are applied initially against principal, then interest income, late charges and any other expenses and fees . Generally, loans are restored to accrual status when the obligation is brought current, has performed in accordance with the contractual terms for a reasonable period of time and the ultimate collectability of the total contractual principal and interest is no longer in doubt. Consumer loans are typically charged off no later than 180 days past due. Past due status is based on contractual terms of the loans.  Loans Held for Sale – Mortgage loans originated and intended for sale in the secondary market at the time of origination are carried at the lower of cost or estimated fair value (determined on an aggregate basis). All sales are made without recourse. Loans held for sale at December 31, 2017 represent loans originated through a third-party brokerage agreement for a fee and present no price risk to the Bank.  Loan Servicing – Servicing assets are recognized as separate assets when rights are acquired through sale of financial assets. A portion of the cost of originating the loan is allocated to the servicing right based on relative fair value. Fair value is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, prepayment speeds, default rates and losses. Capitalized servicing rights are reported in other assets and are amortized into noninterest income in proportion to, and over the periods of, the estimated future net servicing income of the underlying financial assets. Servicing rights are evaluated for impairment based upon the fair value of the rights as compared to amortized cost. For the purpose of computing impairment, mortgage servicing rights are stratified based on risk characteristics of the underlying loans that are expected to have the most impact on projected prepayments including loan type, interest rate and term. Impairment is recognized through a valuation allowance to the extent that fair value is less than the capitalized amount. If the Corporation later determines that all or a portion of the impairment no longer exists, a reduction of the allowance may be recorded as an increase to income. Servicing fee income is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of the outstanding principal or a fixed amount per loan and are recorded as income when earned. The amortization of mortgage servicing rights is netted against loan servicing fee income. Loans serviced by the Bank for the benefit of others totaled $12.6 million, $15.8 million and $21.6 million at December 31, 2017 , 2016 and 2015 , respectively.  Allowance for Loan Losses – The allowance for loan losses is established through provisions for loan losses charged against income. Loans deemed to be uncollectible are charged against the allowance for loan losses, and subsequent recoveries, if any, are credited to the allowance.  The allowance for loan losses is maintained at a level considered adequate to provide for losses that can be reasonably anticipated. Management’s periodic evaluation of the adequacy of the allowance is based on the Bank’s past loan loss experience, known and inherent risks in the portfolio, adverse situations that may affect the borrower’s ability to repay, the estimated value of any underlying collateral, composition of the loan portfolio, current economic conditions, diversification of the loan portfolio, delinquency statistics, results of internal loan reviews, borrowers’ actual or perceived financial and managerial strengths, and other relevant factors. This evaluation is inherently subjective, as it requires material estimates that may be susceptible to significant change, including the amounts and timing of future cash flows expected to be received on impaired loans.  A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by M anagement in determining impairment include payment status, collateral value and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan by loan basis for commercial and commercial real estate loans by one of the following methods: the fair value of the collateral if the loan is collateral dependent , the present value of expected future cash flows discounted at the loan’s effective interest rate or the lo an’s obtainable market price.  The Corporation’s allowance for possible loan losses consists of t hree elements: (1) specific valuation allowances established for probable losses on specific loans , (2) historical valuation allowances calculated based on historical loan loss experience for similar loans with similar characteristics and trends, adjusted, as necessary to reflect the impact general economic conditions and other qualitative risk factors both internal and external to the Corporation and (3) an unallocated component . An unallocated component is maintained to cover uncertainties that could affect Management’s estimate of probable loss. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and general losses in the portfolio.  Large groups of smaller balance homogeneous loans are collectively evaluated for impairment using historical charge-offs as the starting point in estimating loss. Accordingly, the Corporation may not separately identify individual consumer and residential loans for impairment disclosures.  Premises and Equipment – Premises and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets or the lease term for lease hold improvements, whichever is shorter. When assets are retired or sold, the asset cost and related accumulated depreciation are eliminated from the respective accounts, and any resultant gain or loss is included in net income.  The cost of maintenance and repairs is charged to operating expense as incurred, and the cost of major additions and improvements is capitalized.  Intangible Assets – The Bank has $9.0 million of goodwill recorded on its balance sheet as the result of corporate acquisitions. Goodwill is not amortized, nor deductible for tax purposes. However, goodwill is tested for impairment at least annually, as of August 31, in accordance with ASC Topic 350. ASC Topic 350 allows for a qualitative assessment method that requires the use of significant assumptions in order to make a determination of impairment which the Corporation used as of August 31, 2017 . These assumptions may include, but are not limited to: macroeconomic factors, banking industry conditions, banking merger and acquisition trends, the Bank’s historical financial performance, the Corporation’s stock price, forecast Bank financial performance, and change of control premiums. ASC Topic 350 requires the use of the “step-one” test if the qualitative assessment is not used. The step-one test is more quantitative than the qualitative test, but still requires numerous assumptions. The assumptions that may be used in the step-one test may include, but are not limited to: a dividend analysis, comparable sale transactions, and change of control premium estimates. If the step-one test fails, a more comprehensive step-two test is performed before a final determination of impairment is made. If goodwill is determined to be impaired, an impairment write-down is charged to results of operations in the period in which the impairment is determined.  Bank Owned Life Insurance – The Bank invests in bank owned life insurance (BOLI) as a source of funding for employee benefit expenses. The Bank purchases life insurance coverage on the lives of a select group of employees. The Bank is the owner and beneficiary of the policies and records the investment at the cash surrender value of the underlying policies. Income from the increase in cash surrender value of the policies is included in noninterest income.  Other Real Estate Owned (OREO) – Foreclosed real estate (OREO) is comprised of property acquired through a foreclosure proceeding or an acceptance of a deed in lieu of foreclosure. Balances are initially reflected at the estimated fair value less any estimated disposition costs, with subsequent adjustments made to reflect further declines in value. Any losses realized upon disposition of the property, and holding costs prior thereto, are charged against income. All properties are actively marketed to potential buyers.  Transfers of Financial Assets – Transfers of financial assets are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Corporation, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Corporation does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.  Federal Income Taxes – Deferred income taxes are provided on the liability method whereby deferred tax assets are recognized for deductible temporary differences and deferred tax liabilities are recognized for taxable temporary differences. Temporary differences are the differences between the reported amounts of assets and liabilities and their tax bases. Deferred tax assets are reduced by a valuation allowance, when in the opinion of M anagement, it is more likely than not that some portion or all deferred tax assets will not be realized. Deferred tax assets and liabilities are adjusted through the provision for income taxes for the effects of changes in tax laws and rates on the date of enactment. ASC Topic 740 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. Benefits from tax positions should be recognized in the financial statements only when it is more-likely-than-not that the tax position will be sustained upon examination by the appropriate taxing authority that would have full knowledge of all relevant information. A tax position that meets the more-likely-than-not recognition threshold is measured at the largest amount of benefit that is greater than fifty percent likely of being realized upon ultimate settlement. Tax positions that previously failed to meet the more-likely-than-not recognition threshold should be recognized in the first subsequent financial reporting period in which that threshold is met. Previously recognized tax positions that no longer meet the more-likely-than-not recognition threshold should be derecognized in the first subsequent financial reporting period in which that threshold is no longer met. ASC Topic 740, “Income Taxes” also provides guidance on the accounting for and disclosure of unrecognized tax benefits, interest and penalties.  Advertising Expenses – Advertising costs are expensed as incurred.  Treasury Stock – The acquisition of treasury stock is recorded under the cost method. The subsequent disposition or sale of the treasury stock is recorded using the average cost method.  Investment and Trust Services – Assets held in a fiduciary capacity are not assets of the Corporation and therefore are not included in the consolidated financial statements. The fair value of trust assets under management at December 31, 2017 w as $686.9 million and $622.6 million at the prior year-end. We expect that certain r evenue from investment and trust services will be effected by the adoption of ASU 2014,-09 Revenue from Contracts with Customers in 2018. See the section on Recent Accounting Pronouncements.  Off-Balance Sheet Financial Instruments – In the ordinary course of business, the Bank has entered into off-balance sheet financial instruments consisting of commitments to extend credit and letters of credit. Such financial instruments are recorded on the balance sheet when they are funded. The amount of any liability for the credit risk associated with off-balance sheet financial instruments is recorded in other liabilities and was not material to the financial position of the Corporation at December 31, 201 7 or 201 6 .  Stock-Based Compensation – The Corporation accounts for stock based compensation in accordance with the ASC Topic 718, “Stock Compensation.” ASC Topic 718 requires compensation costs related to share-based payment transactions to be recognized in the financial statements (with limited exceptions). The amount of compensation cost is measured based on the grant-date fair value of the equity or liability instruments issued and forfeitures are accounted for as they occur . Compensation cost is recognized over the period that an employee provides services in exchange for the award. Compensation expense was $161 thousand in 2017 and $88 thousand in 2016 and $74 thousand in 2015 . The Corporation does not allow the employee to use shares to satisfy employer income tax withholding obligations.  Pension – The provision for pension expense was actuarially determined using the projected unit credit actuarial cost method. The funding policy is to contribute an amount sufficient to meet the requirements of ERISA, subject to Internal Revenue Code contribution limitations.  In accordance with ASC Topic 715, “ Compensation – Retirement Benefits”, the Corporation recognizes the plan’s over-funded or under-funded status as an asset or liability with an offsetting adjustment to Accumulated Other Comprehensive Income (AOCI). ASC Topic 715 requires the determination of the fair value of a plan’s assets at the company’s year-end and the recognition of actuarial gains and losses, prior service costs or credits, transition assets or obligations as a component of AOCI. These amounts were previously netted against the plan’s funded status in the Corporation’s consolidated Balance Sheet. These amounts will be subsequently recognized as components of net periodic benefit costs. Further, actuarial gains and losses that arise in subsequent periods that are not initially recognized as a component of net periodic benefit costs will be recognized as a component of AOCI. Those amounts will subsequently be recorded as component of net periodic benefit costs as they are amortized during future periods.  Earnings per share – Earnings per share are computed based on the weighted average number of shares outstanding during each year. The Corporation’s basic earnings per share are calculated as net income divided by the weighted average number of shares outstanding. For diluted earnings per share, net income is divided by the weighted average number of shares outstanding plus the incremental number of shares added as a result of converting common stock equivalents, calculated using the treasury stock method. The Corporation’s common stock equivale nts consist of stock options.  A reconciliation of the weighted average shares outstanding used to calculate basic earnings per share and diluted earnings per share follows:     (Dollars and shares in thousands, except per share data) 2017 2016 2015  Weighted average shares outstanding (basic) 4,337 4,297 4,244  Impact of common stock equivalents 22 5 6  Weighted average shares outstanding (diluted) 4,359 4,302 4,250  Anti-dilutive options excluded from calculation — 9 27  Net income $ 2,176 $ 8,087 $ 10,204  Basic earnings per share $ 0.50 $ 1.88 $ 2.40  Diluted earnings per share $ 0.50 $ 1.88 $ 2.40  Segment Reporting – The Bank acts as an independent community financial services provider and offers traditional banking and related financial services to individual, business and government customers. Through its community office and electronic banking applications , the Bank offers a full array of commercial and retail financial services, including the taking of time, savings and demand deposits; the making of commercial, consumer and mortgage loans; and the providing of safe deposit services. The Bank also performs personal, corporate, pension and fiduciary services through its Investment and Trust Services Department .  Management does not separately allocate expenses, including the cost of funding loan demand, between the commercial, retail, mortgage banking and trust operations of the Bank. As such, discrete information is not available and segment reporting would not be meaningful.  Comprehensive Income – Comprehensive income is reflected in the Consolidated Statements of Comprehensive Income and includes net income and unrealized gains or losses, net of tax, on investment securities and derivatives and the change in plan assets and benefit obligations on the Bank’s pension plan, net of tax.  Recent Accounting Pronouncements:     Standard Description Effective Date Effect on the financial statements or other significant matters   ASU 2016-09, Stock Compensation (Topic 718): Improvements to Employee Share-based Payment Accounting The standard requires entities to recognize the income tax effects of share-based awards in the income statement when the awards vest or are settled (i.e. the additional paid-in capital pools will be eliminated). The guidance on employers' accounting for an employee's use of shares to satisfy the employer's statutory income tax withholding obligation and for forfeitures is changing. The standard also provides an entity the option to make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest or account for forfeitures when they occur. January 1, 2017 We adopted the standard during the first quarter of 2017. Due to the type of stock compensation plans used by the Corporation, there was no effect on the Corporation's consolidated financial statements.   ASU 2017-09, Premium Amortization on Purchased Callable Debt Securities The standard shortens the amortization period for premiums on purchased callable debt securities to the earliest call date, rather than amortizing over the full contractual term. The standard does change the standard for securities held at a discount. The amendments require companies to reset the effective yield using the payment terms of the debt security if the call option is not exercised on the earliest call date. If the security has additional future called dates, any excess of the amortized cost basis over the amount repayable by the issuer at the next call date should be amortized to the next call date. January 1, 2017 We adopted the standard during the first quarter of 2017, and there was no material effect on the Corporation's consolidated financial statements.   ASU 2018-02, Income Statement (Topic 220), Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income Under ASU 2018-02, entities are allowed, but not required, to reclassify from Accumulated Other Comprehensive Income (AOCI) to retained earnings stranded tax effects resulting from the new federal corporate income tax rate of the Tax Cuts and Jobs Act (the Act). The reclassification could include other stranded tax effects that related to the Act but do not directly related to the change in the federal rate. Tax effects that are stranded in AOCI for other reasons may not be reclassified. Entities also will have an option to adopt the standard retrospectively or in the period of adoption. January 1, 2018 The Corporation adopted the provisions of the ASU in the fourth quarter of 2017. The Company reclassified the disproportionate tax effect resulting from the Act by increasing retained earnings by $992 thousand and reducing AOCI by $992 thousand.   ASU 2016-15, Statements of Cash Flow (Topi

Regulatory Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2017
Regulatory Matters [Abstract]
Regulatory Matters	Note 2. Regulatory Matters  The Bank is limited as to the amount it may lend to the Corporation, unless such loans are collateralized by specific obligations. State regulations also limit the amount of dividends the Bank can pay to the Corporation and are generally limited to the Bank’s accumulated net earnings, which were $92.3 million at December 31, 2017 . In addition, dividends paid by the Bank to the Corporation would be prohibited if the effect thereof would cause the Bank’s capital to be reduced below applicable minimum capital requirements. The Corporation and the Bank are subject to various regulatory capital requirements administered by federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary, actions by regulators that, if undertaken, could have a direct material effect on the Corporation’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Bank must meet specific capital guidelines that involve quantitative measures of the Bank’s assets, liabilities, and certain off-balance-sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgements by the regulators about components, risk weightings, and other factors.  Quantitative measures established by regulation to ensure capital adequacy require the Corporation and the Bank to maintain minimum amounts and ratios (set forth in the table below) of total and Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined), and of Tier 1 capital (as defined) to average assets (as defined). Although not adopted in regulation form, the Pennsylvania Department of Banking utilizes capital standards requiring a minimum leverage capital ratio of 6% and a risk-based capital ratio of 10% , defined substantially the same as those by the FDIC. Management believes, as of December 31, 2017, that the Corporation and the Bank met all capital adequacy requirements to which it is subject.  In July 201 3, Federal banking regulators approved the final rules from the Basel Committee on Banking Supervision for the regulation of capital requirements for bank holding companies and U.S banks, generally referred to as “Basel III.” The Basel III standards were effective for the Corporation and the Bank, effective January 1, 2015 (subject to a phase-in period for certain provisions). Basel III imposes significantly higher capital requirements and more restrictive leverage and liquidity ratios than those previously in place. The capital ratios to be considered “well capitalized” under Basel III are: (1) Common Equity Tier 1(CET1) of 6.5% , (2) Tier 1 Leverage of 5% , (3)Tier 1 Risk-Based Capital of 8% , and (4) Total Risk-Based Capital of 10% . The rules also include changes in the risk weights of certain assets to better reflect credit and other risk exposures. In addition, a capital conservation buffer is phased-in beginning in at 0.625% for 2016, 1.25% for 2017, 1.875% for 2018 and 2.50% for 2019 and thereafter. The capital conservation buffer is applicable to all of the capital ratios except for the Tier 1 Leverage ratio. The capital conservation buffer is equal to the lowest value of the three applicable capital ratios less the regulatory minimum for each respective capital measurement. The Bank’s capital conservation buffer at December 31, 2017 was 7.19% (total risk-based capital 15.19% less 8.00% ) compared to the 2017 regulatory buffer of 1.25% . Compliance with the capital conservation buffer is required in order to avoid limit ing certain capital distributions. As of December 31, 2017 , the Bank was “well capitalized’ under the Basel III requirements and believes it would be “well capitalized” on a fully-phased in basis had such a requirement been in effect.  The following table presents the regulatory capital ratio requirements for the Corporation and the Bank .    As of December 31, 2017  Regulatory Ratios  Adequately Capitalized Well Capitalized  Actual Minimum Minimum  (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio  Common Equity Tier 1 Risk-based Capital Ratio (1)  Corporation $ 112,315 14.06% $ 35,953 4.50% N/A N/A  Bank 111,496 13.93% 36,010 4.50% $ 52,014 6.50%   Tier 1 Risk-based Capital Ratio (2)  Corporation $ 112,315 14.06% $ 47,938 6.00% N/A N/A  Bank 111,496 13.93% 48,013 6.00% $ 64,018 8.00%   Total Risk-based Capital Ratio (3)  Corporation $ 122,324 15.31% $ 63,917 8.00% N/A N/A  Bank 121,521 15.19% 64,018 8.00% $ 80,022 10.00%   Tier 1 Leverage Ratio (4)  Corporation $ 112,315 9.73% $ 46,175 4.00% N/A N/A  Bank 111,496 9.64% 46,242 4.00% $ 57,802 5.00%    As of December 31, 2016  Regulatory Ratios  Adequately Capitalized Well Capitalized  Actual Minimum Minimum  (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio  Common Equity Tier 1 Risk-based Capital Ratio (1)  Corporation $ 111,691 14.41% $ 34,889 4.50% N/A N/A  Bank 110,932 14.29% 34,943 4.50% $ 50,473 6.50%   Tier 1 Risk-based Capital Ratio (2)  Corporation $ 111,691 14.41% $ 46,518 6.00% N/A N/A  Bank 110,932 14.29% 46,590 6.00% $ 62,121 8.00%   Total Risk-based Capital Ratio (3)  Corporation $ 121,456 15.67% $ 62,024 8.00% N/A N/A  Bank 120,712 15.55% 62,121 8.00% $ 77,651 10.00%   Tier 1 Leverage Ratio (4)  Corporation $ 111,691 10.11% $ 44,209 4.00% N/A N/A  Bank 110,932 10.02% 44,270 4.00% $ 55,337 5.00%  (1) Common equity Tier 1 capital / total risk-weighted assets , (2) Tier 1 capital / total risk-weighted assets , (3) Total risk-based capital / total risk-weighted assets , (4) Tier 1 capital / average quarterly assets

Restricted Cash Balances

Restricted Cash Balances	12 Months Ended
	Dec. 31, 2017
Restricted Cash Balances [Abstract]
Restricted Cash Balances	Note 3. Restricted Cash Balances  The Bank is required to maintain reserves against its deposit liabilities in the form of vault cash and/or balances with the Federal Reserve Bank. Deposit reserves that the Bank was required to hold were approximately $ 7.1 million and $ 6.4 million at December 31, 2017 and 2016 , respectively and were satisfied by the Bank’s vault cash.

Investments

Investments	12 Months Ended
	Dec. 31, 2017
Investments [Abstract]
Investments	Note 4. Investments  The investment portfolio serves as a mechanism to invest funds if funding sources out pace lending activity, to provide liquidity for lending and operations, and provide collateral for deposits and borrowings. The mix of securities and investing decisions are made as a component of balance sheet management. Debt securities include U.S. Government Agencies, U.S. Government Agency mortgage-backed securities, non-agency mortgage-backed securities, state and municipal government bonds, and trust preferred securities. The equity portfolio consists of one community bank stock. The average life of the portfolio is 3.5 years and $84.1 million (fair value) is pledged as collateral for deposits. The Bank has no investments in a single issuer that exceeds 10% of shareholders equity. All securities are classified as available for sale and all investment balances refer to fair value, unless noted otherwise.  The amortized cost and estimated fair value of investment securities available for sale as of December 31, 2017 and 2016 is as follows:     (Dollars in thousands) Gross Gross  Amortized unrealized unrealized Fair  December 31, 2017 cost gains losses value  Equity securities $ 164 $ 201 $ — $ 365  U.S. Government and Agency securities 11,451 64 (43) 11,472  Municipal securities 57,374 650 (252) 57,772  Trust preferred securities 6,000 — (183) 5,817  Agency mortgage-backed securities 51,307 197 (567) 50,937  Private-label mortgage-backed securities 858 88 — 946  Asset-backed securities 28 — (1) 27  Total $ 127,182 $ 1,200 $ (1,046) $ 127,336      (Dollars in thousands) Gross Gross  Amortized unrealized unrealized Fair  December 31, 2016 cost gains losses value  Equity securities $ 164 $ 126 $ — $ 290  U.S. Government and Agency securities 12,598 148 (26) 12,720  Municipal securities 62,763 793 (571) 62,985  Trust preferred securities 5,979 — (518) 5,461  Agency mortgage-backed securities 61,305 431 (452) 61,284  Private-label mortgage-backed securities 1,053 56 (5) 1,104  Asset-backed securities 33 — (2) 31  Total $ 143,895 $ 1,554 $ (1,574) $ 143,875  At December 31, 2017 and 2016 , the fair value of investment securities pledged to secure public fund and trust deposit totaled $ 84.1 million and $ 79.1 million, respectively.  The amortized cost and estimated fair value of debt securities at December 31, 2017 , by contractual maturity are shown below. Actual maturities may differ from contractual maturities because of prepayment or call options embedded in the securities.      (Dollars in thousands) Amortized cost Fair value  Due in one year or less $ 19 $ 19  Due after one year through five years 13,784 13,920  Due after five years through ten years 33,748 33,770  Due after ten years 27,302 27,379  74,853 75,088  Mortgage-backed securities 52,165 51,883  Total $ 127,018 $ 126,971  The composition of the net realized securities gains for the years ended December 31 is as follows:     (Dollars in thousands) 2017 2016 2015  Gross gains realized (including gain on conversion) $ 3 $ 22 $ 736  Gross losses realized — — —  Net gains realized $ 3 $ 22 $ 736  The 2017 and 2016 gains were generated from calls on bonds. A gain on conversion of an investment security of $728 thousand was recorded in 2015 when one bank equity stock owned by the Bank was acquired by another bank. The remaining security gains were generated by the sale of equity securities.  Impairment :  The following table reflects the temporary impairment in the investment portfolio, aggregated by investment category, length of time that individual securities have been in a continuous unrealized loss position and the number of securities in each category as of December 31, 2017 and 2016 .  The condition of the portfolio at year-end 2017, as measured by the dollar amount of temporarily impaired securities is better since year-end 2016. The Agency Mortgage-backed sector recorded the largest unrealized loss and the greatest number of securities with an unrealized loss.  For securities with an unrealized loss, Management applies a systematic methodology in order to perform an assessment of the potential for other-than-temporary impairment. In the case of debt securities, investments considered for other-than-temporary impairment: (1) had a specified maturity or repricing date; (2) were generally expected to be redeemed at par, and (3) were expected to achieve a recovery in market value within a reasonable period of time. In addition, the Bank considers whether it intends to sell these securities or whether it will be forced to sell these securities before the earlier of amortized cost recovery or maturity. Equity securities are assessed for other-than-temporary impairment based on the length of time of impairment, dollar amount of the impairment and general market and financial conditions relating to specific issues. The impairment identified on debt and equity securities and subject to assessment at December 31, 2017, was deemed to be temporary and required no further adjustments to the financial statements, unless otherwise noted. The following table s present the temporary impairment in the security portfolio for the years presented:      December 31, 2017  Less than 12 months 12 months or more Total  Fair Unrealized Fair Unrealized Fair Unrealized  (Dollars in thousands) Value Losses Count Value Losses Count Value Losses Count   U.S. Government and Agency securities $ 2,315 $ (11) 5 $ 3,528 $ (32) 10 $ 5,843 $ (43) 15  Municipal securities 13,767 (89) 22 7,507 (163) 14 21,274 (252) 36  Trust preferred securities 1,216 (12) 2 4,601 (171) 5 5,817 (183) 7  Agency mortgage-backed securities 16,287 (129) 29 20,563 (438) 39 36,850 (567) 68  Private-label mortgage-backed securities — — — — — — — — —  Asset-backed securities — — — 4 (1) 1 4 (1) 1  Total temporarily impaired securities $ 33,585 $ (241) 58 $ 36,203 $ (805) 69 $ 69,788 $ (1,046) 127      December 31, 2016  Less than 12 months 12 months or more Total  Fair Unrealized Fair Unrealized Fair Unrealized  (Dollars in thousands) Value Losses Count Value Losses Count Value Losses Count   U.S. Government and Agency securities $ 789 $ (9) 1 $ 3,413 $ (17) 10 $ 4,202 $ (26) 11  Municipal securities 23,407 (417) 43 1,598 (154) 2 25,005 (571) 45  Trust preferred securities — — — 5,461 (518) 7 5,461 (518) 7  Agency mortgage-backed securities 26,995 (359) 39 4,656 (93) 11 31,651 (452) 50  Private-label mortgage-backed securities 281 (5) 1 — — — 281 (5) 1  Asset-backed securities — — — 4 (2) 1 4 (2) 1  Total temporarily impaired securities $ 51,472 $ (790) 84 $ 15,132 $ (784) 31 $ 66,604 $ (1,574) 115  T he following table represents the cumulative credit losses on debt securities recognized in earnings as of December 31 :     (Dollars in thousands) Twelve Months Ended  2017 2016  Balance of cumulative credit-related OTTI at January 1 $ 595 $ 555  Additions for credit-related OTTI not previously recognized — 40  Additional increases for credit-related OTTI previously recognized when there is  no intent to sell and no requirement to sell before recovery of amortized cost basis — —  Decreases for previously recognized credit-related OTTI because there was an intent to sell — —  Reduction for increases in cash flows expected to be collected — —  Balance of credit-related OTTI at December 31 $ 595 $ 595  The Bank held $456 thousand of restricted stock at the end of 2017 of which $426 thousand is stock in the Federal Home Loan Bank of Pittsburgh (FHLB). FHLB stock is carried at a cost of $100 per share. FHLB stock is evaluated for impairment primarily based on an assessment of the ultimate recoverability of its cost. As a government sponsored entity, FHLB has the ability to raise funding through the U.S. Treasury that can be used to support it operations. There is not a public market for FHLB stock and the benefits of FHLB membership (e.g., liquidity and low cost funding) add value to the stock beyond purely financial measures. If FHLB stock were deemed to be impaired, the write-down for the Bank could be significant. Management intends to remain a member of the FHLB and believes that it will be able to fully recover the cost basis of this investment.

Loans

Loans	12 Months Ended
	Dec. 31, 2017
Loans [Abstract]
Loans	Note 5. Loans  The Bank reports its loan portfolio based on the primary collateral of the loan. It further classifies these loans by the primary purpose, either consumer or commercial. The Bank’s mortgage loans include long-term loans to individuals and businesses secured by mortgages on the borrower’s real property. Construction loans are made to finance the purchase of land and the construction of residential and commercial buildings thereon, and are secured by mortgages on real estate. Commercial loans are made to businesses of various sizes for a variety of purposes including construction, property, plant and equipment, and working capital. Commercial loans also include loans to government municipalities. Commercial lending is concentrated in the Bank’s primary market, but also includes purchased loan participations. Consumer loans are comprised of installment, home equity and unsecured personal lines of credit.  A summary of loans outstandin g, by primary collateral, at December 31 is as follows:       (Dollars in thousands) 2017 2016  Residential Real Estate 1-4 Family  Consumer first liens $ 97,159 $ 103,125  Commercial first lien 61,275 65,445  Total first liens 158,434 168,570   Consumer junior liens and lines of credit 45,043 44,817  Commercial junior liens and lines of credit 5,328 5,396  Total junior liens and lines of credit 50,371 50,213  Total residential real estate 1-4 family 208,805 218,783   Residential real estate - construction  Consumer 1,813 1,350  Commercial 8,088 7,625  Total residential real estate construction 9,901 8,975   Commercial real estate 428,428 390,584  Commercial 291,519 270,826  Total commercial 719,947 661,410   Consumer 5,047 4,705  943,700 893,873  Less: Allowance for loan losses (11,792) (11,075)  Net Loans $ 931,908 $ 882,798   Included in the loan balances are the following:  Net unamortized deferred loan costs $ 98 $ 242   Loans pledged as collateral for borrowings and commitments from:  FHLB $ 737,313 $ 711,682  Federal Reserve Bank 35,740 41,152  Total $ 773,053 $ 752,834  Loans to directors and executive officers and related interests and affiliated enterprises were as follows:     (Dollars in thousands) 2017 2016  Balance at beginning of year $ 23,243 $ 18,954  New loans made 1,513 6,400  Repayments (2,633) (2,111)  Balance at end of year $ 22,123 $ 23,243

Loan Quality

Loan Quality	12 Months Ended
	Dec. 31, 2017
Loan Quality [Abstract]
Loan Quality	Note 6. Loan Quality  Management utilizes a risk rating scale ranging from 1 (Prime) to 9 (Loss) to evaluate loan quality. This risk rating scale is used primarily for commercial purpose loans. Consumer purpose loans are identified as either a pass or substandard rating. Substandard consumer loans are loans that are 90 days or more past due and still accruing. Loans rated 1 – 4 are considered pass credits. Loans that are rated 5 are pass credits, but have been identified as credits that are likely to warrant additional attention and monitoring. Loans rated 6 - Special Mention or worse begin to receive enhanced monitoring and reporting by the Bank. Loans rated 7 - Substandard or 8 - Doubtful exhibit the greatest financial weakness and present the greatest possible risk of loss to the Bank. Nonaccrual loans are rated no better than 7 - Substandard . The following represents some of the factors used in determining the risk rating of a borrower: cash flow, debt coverage, liquidity, management, and collateral. Risk ratings, for pass credits, are generally reviewed annually for term debt and at renewal for revolving or renewing debt. The Bank monitors loan quality by reviewing four measurements: (1) loans rated 6 or worse (collectively “watch list”), (2) delinquent loans, (3) other real estate owned (OREO), and (4) net-charge-offs.  The following table reports on the risk rating for those loans in the portfolio that are assigned an individual risk rating as of December 31, 2017 and 2016:      Pass Special Mention Substandard Doubtful  (Dollars in thousands) (1-5) (6) (7) (8) Total  December 31, 2017  Residential Real Estate 1-4 Family  First liens $ 157,395 $ — $ 1,039 $ — $ 158,434  Junior liens and lines of credit 50,371 — — — 50,371  Total 207,766 — 1,039 — 208,805  Residential real estate - construction 8,893 — 1,008 — 9,901  Commercial real estate 419,277 680 8,471 — 428,428  Commercial 289,916 — 1,603 — 291,519  Consumer 5,047 — — — 5,047  Total $ 930,899 $ 680 $ 12,121 $ — $ 943,700      December 31, 2016  Residential Real Estate 1-4 Family  First liens $ 167,199 $ 227 $ 1,144 $ — $ 168,570  Junior liens and lines of credit 50,017 28 168 — 50,213  Total 217,216 255 1,312 — 218,783  Residential real estate - construction 8,220 — 755 — 8,975  Commercial real estate 377,283 — 13,301 — 390,584  Commercial 267,901 957 1,968 — 270,826  Consumer 4,705 — — — 4,705  Total $ 875,325 $ 1,212 $ 17,336 $ — $ 893,873  Delinquent loans are a result of borrowers’ cash flow and/or alternative sources of cash being insufficient to repay loans. The Bank’s likelihood of collateral liquidation to repay the loans becomes more probable the further behind a borrower falls, particularly when loans reach 90 days or more past due. Management monitors the performance status of loans by the use of an aging report. The aging report can provide an early indicator of loans that may become severely delinquent and possibly result in a loss to the Bank. The following table presents the aging of payments in the loan portfolio as of December 31, 2017 and 2016:      (Dollars in thousands) Loans Past Due and Still Accruing Total  Current 30-59 Days 60-89 Days 90 Days+ Total Non-Accrual Loans  December 31, 2017  Residential Real Estate 1-4 Family  First liens $ 157,247 $ 485 $ 534 $ — $ 1,019 $ 168 $ 158,434  Junior liens and lines of credit 50,202 139 30 — 169 — 50,371  Total 207,449 624 564 — 1,188 168 208,805  Residential real estate - construction 9,435 — — — — 466 9,901  Commercial real estate 425,806 421 347 — 768 1,854 428,428  Commercial 291,221 111 — — 111 187 291,519  Consumer 5,017 23 7 — 30 — 5,047  Total $ 938,928 $ 1,179 $ 918 $ — $ 2,097 $ 2,675 $ 943,700       December 31, 2016  Residential Real Estate 1-4 Family  First liens $ 166,689 $ 1,236 $ 414 $ — $ 1,650 $ 231 $ 168,570  Junior liens and lines of credit 50,031 96 — — 96 86 50,213  Total 216,720 1,332 414 — 1,746 317 218,783  Residential real estate - construction 8,495 — — — — 480 8,975  Commercial real estate 384,658 858 447 665 1,970 3,956 390,584  Commercial 270,478 250 75 — 325 23 270,826  Consumer 4,672 30 3 — 33 — 4,705  Total $ 885,023 $ 2,470 $ 939 $ 665 $ 4,074 $ 4,776 $ 893,873  Impaired loans generally represent Management’s determination that the borrower will be unable to repay the loan in accordance with its contractual terms and that collateral liquidation may or may not fully repay both interest and principal. It is the Bank’s policy to evaluate the probable collectability of principal and interest due under terms of loan contracts for all loans 90-days or more, nonaccrual loans, or impaired loans. Further, it is the Bank’s policy to discontinue accruing interest on loans that are not adequately secured and in the process of collection. Upon determination of nonaccrual status, the Bank subtracts any current year accrued and unpaid interest from its income, and any prior year accrued and unpaid interest from the allowance for loan losses. Management continually monitors the status of nonperforming loans, the value of any collateral and potential of risk of loss. Nonaccrual loans are rated no better than 7 - Substandard . At December 31, 2017, the Bank had $132 thousand of residential properties in the process of foreclosure compared to $123 thousand at the end of 2016.  Interest not recognized on nonaccrual loans was $159 thousand, $175 thousand and $335 thousand for the years ended December 31, 2017 , 2016 and 2015 , respectively. In addition to monitoring nonaccrual loans, the Bank also closely monitors impaired loans and troubled debt restructurings. A loan is considered to be impaired when, based on current information and events, it is probable that the Bank will be unable to collect all interest and principal payments due according to the originally contracted terms of the loan agreement. Nonaccrual loans, excluding consumer purpose loans, and troubled-debt restructuring (TDR) loans are considered impaired. For impaired loans with balances less than $250 thousand and consumer purpose loans, a specific reserve analysis is not performed and these loans are added to the general allocation pool. These loans totaled $677 thousand at December 31, 20 17 and are comprised primarily of loans secured by residential real estate. Management does not believe that excluding these loans from the specific reserve analysis presents any additional risk. Impaired loans totaled $12.6 million at December 31, 2017 compared to $15.1 million at December 31, 2016. The following tables present information on impaired loans:       Impaired Loans  With No Allowance With Allowance  (Dollars in thousands) Unpaid Unpaid  Recorded Principal Recorded Principal Related  December 31, 2017 Investment Balance Investment Balance Allowance  Residential Real Estate 1-4 Family  First liens $ 869 $ 950 $ — $ — $ —  Junior liens and lines of credit — — — — —  Total 869 950 — — —  Residential real estate - construction 466 531 — — —  Commercial real estate 11,061 11,541 — — —  Commercial 187 201 — — —  Total $ 12,583 $ 13,223 $ — $ — $ —      December 31, 2016  Residential Real Estate 1-4 Family  First liens $ 956 $ 1,030 $ — $ — $ —  Junior liens and lines of credit 85 93 — — —  Total 1,041 1,123 — — —  Residential real estate - construction 480 535 — — —  Commercial real estate 13,523 14,133 — —  Commercial 23 35 — — —  Total $ 15,067 $ 15,826 $ — $ — $ —      Twelve Months Ended  December 31, 2017 December 31, 2016 December 31, 2015  Average Interest Average Interest Average Interest  (Dollars in thousands) Recorded Income Recorded Income Recorded Income  Investment Recognized Investment Recognized Investment Recognized  Residential Real Estate 1-4 Family  First liens $ 1,083 $ 39 $ 1,194 $ 38 $ 1,531 $ 13  Junior liens and lines of credit 64 — 93 1 105 —  Total 1,147 39 1,287 39 1,636 13  Residential real estate - construction 473 — 492 4 505 —  Commercial real estate 11,938 435 17,806 589 14,509 122  Commercial 245 — 32 — 278 —  Total $ 13,803 $ 474 $ 19,617 $ 632 $ 16,928 $ 135  A loan is considered a troubled debt restructuring (TDR) if the creditor (the Bank), for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider. These concessions may include lowering the interest rate, extending the maturity, reamortization of payment, or a combination of multiple concessions. The Bank reviews all loans rated 6 or worse when it is providing a loan restructure, modification or new credit facility to determine if the action is a TDR. If a TDR loan is placed on nonaccrual status, it remains on nonaccrual status for at least six months to ensure performance.  The following table presents TDR loans as of December 31, 2017 and 2016:    Troubled Debt Restructurings  That Have Defaulted on  Modified Terms in the  (Dollars in thousands) Troubled Debt Restructurings Last Twelve Months  Number of Recorded Number of Recorded  Contracts Investment Performing* Nonperforming* Contracts Investment  December 31, 2017  Residential real estate - construction 1 $ 466 $ 466 $ — — $ —  Residential real estate 5 737 701 36 1 39  Commercial real estate 11 10,983 10,388 595 1 595  Total 17 $ 12,186 $ 11,555 $ 631 2 $ 634      December 31, 2016  Residential real estate - construction 1 $ 480 $ 480 $ — — $ —  Residential real estate 5 875 724 151 1 151  Commercial real estate 11 12,064 10,814 1,250 1 1,250  Total 17 $ 13,419 $ 12,018 $ 1,401 2 $ 1,401  * The performing status is determined by the loan ’ s compliance with the modified terms.  There were no new TDR loans made during the year ended December 31, 2017.  The following table reports new TDR loans made during 2016, concession granted and the recorded investment as of December 31, 2016:     New During Period  Twelve Months Ended Number of Pre-TDR After-TDR Recorded  December 31, 2016 Contracts Modification Modification Investment Concession  Commercial real estate 1 $ 525 $ 525 $ 513 multiple  Residential real estate 1 238 238 237 maturity  Total 2 $ 763 $ 763 $ 750  Allowance for Loan Losses:  Management monitors loan performance on a monthly basis and performs a quarterly evaluation of the adequacy of the allowance for loan losses (ALL). The ALL is determined by segmenting the loan portfolio based on the loan’s collateral. When calculating the ALL, consideration is given to a variety of factors in establishing this estimate including, but not limited to, current economic conditions, diversification of the loan portfolio, delinquency statistics, results of internal loan reviews, historical charge-offs, the adequacy of the underlying collateral (if collateral dependent) and other relevant factors. The Bank begins enhanced monitoring of all loans rated 6 - Special Mention or worse, and obtains a new appraisal or asset valuation for any placed on nonaccrual and rated 7 - S ubstandard or worse. Management, at its discretion, may determine that additional adjustments to the appraisal or valuation are required. Valuation adjustments will be made as necessary based on factors, including, but not limited to: the economy, deferred maintenance, industry, type of property/equipment, age of the appraisal, etc. and the knowledge Management has about a particular situation. In addition, the cost to sell or liquidate the collateral is also estimated and deducted from the valuation in order to determine the net realizable value to the Bank. When determining the allowance for loan losses, certain factors involved in the evaluation are inherently subjective and require material estimates that may be susceptible to significant change, including the amounts and timing of future cash flows expected to be received on impaired loans. Management monitors the adequacy of the allowance for loan losses on an ongoing basis and reports its adequacy quarterly to the Credit Risk Oversight Committee of the Board of Directors. Management believes that the allowance for loan losses at December 31, 2017 is adequate.  The following table shows, by loan class, the activity in the Allowance for Loan Loss ( ALL ) , for the years ended December 31, 2017 , 2016 and 2015:      Residential Real Estate 1-4 Family  First Junior Liens & Commercial  (Dollars in thousands) Liens Lines of Credit Construction Real Estate Commercial Consumer Unallocated Total   ALL at December 31, 2014 $ 994 $ 271 $ 214 $ 4,978 $ 1,515 $ 127 $ 1,012 $ 9,111  Charge-offs (43) (39) (21) — (270) (198) — (571)  Recoveries 7 — 18 14 148 74 — 261  Provision 31 76 (17) 657 126 99 313 1,285  ALL at December 31, 2015 $ 989 $ 308 $ 194 $ 5,649 $ 1,519 $ 102 $ 1,325 $ 10,086   ALL at December 31, 2015 $ 989 $ 308 $ 194 $ 5,649 $ 1,519 $ 102 $ 1,325 $ 10,086  Charge-offs (49) — (41) (2,751) (74) (167) — (3,082)  Recoveries 35 — — 19 167 75 — 296  Provision 130 15 71 3,192 281 90 (4) 3,775  ALL at December 31, 2016 $ 1,105 $ 323 $ 224 $ 6,109 $ 1,893 $ 100 $ 1,321 $ 11,075   ALL at December 31, 2016 $ 1,105 $ 323 $ 224 $ 6,109 $ 1,893 $ 100 $ 1,321 $ 11,075  Charge-offs (13) — — (14) (8) (102) — (137)  Recoveries 2 11 — 17 117 37 — 184  Provision (34) (4) — 414 108 70 116 670  ALL at December 31, 2017 $ 1,060 $ 330 $ 224 $ 6,526 $ 2,110 $ 105 $ 1,437 $ 11,792  The following table shows, by loan class, the loans that were evaluated for the Allowance for Loan Loss ( ALL ) under a specific reserve (individually) and those that were evaluated under a general reserve (collectively), and the amount of the allowance established in each category as of December 31, 2017 and 2016:      Residential Real Estate 1-4 Family  First Junior Liens & Commercial  (Dollars in thousands) Liens Lines of Credit Construction Real Estate Commercial Consumer Unallocated Total   December 31, 2017  Loans evaluated for ALL:  Individually $ 459 $ — $ 466 $ 10,981 $ — $ — $ — $ 11,906  Collectively 157,975 50,371 9,435 417,447 291,519 5,047 — 931,794  Total $ 158,434 $ 50,371 $ 9,901 $ 428,428 $ 291,519 $ 5,047 $ — $ 943,700   ALL established for loans evaluated:  Individually $ — $ — $ — $ — $ — $ — $ — $ —  Collectively 1,060 330 224 6,526 2,110 105 1,437 11,792  ALL at December 31, 2017 $ 1,060 $ 330 $ 224 $ 6,526 $ 2,110 $ 105 $ 1,437 $ 11,792   December 31, 2016  Loans evaluated for ALL:  Individually $ 628 $ 52 $ 480 $ 13,523 $ — $ — $ — $ 14,683  Collectively 167,942 50,161 8,495 377,061 270,826 4,705 — 879,190  Total $ 168,570 $ 50,213 $ 8,975 $ 390,584 $ 270,826 $ 4,705 $ — $ 893,873   ALL established for loans evaluated:  Individually $ — $ — $ — $ — $ — $ — $ — $ —  Collectively 1,105 323 224 6,109 1,893 100 1,321 11,075  ALL at December 31, 2016 $ 1,105 $ 323 $ 224 $ 6,109 $ 1,893 $ 100 $ 1,321 $ 11,075

Premises And Equipment

Premises And Equipment	12 Months Ended
	Dec. 31, 2017
Premises And Equipment [Abstract]
Premises And Equipment	Note 7. Premises and Equipment  At December 31, p remises and equipment consist ed of:    (Dollars in thousands) Estimated Life 2017 2016  Land $ 2,962 $ 3,000  Buildings and leasehold improvements 15 - 30 years, or lease term 24,347 24,190  Furniture, fixtures and equipment 3 - 10 years 12,447 11,902  Total cost 39,756 39,092  Less: Accumulated depreciation (26,015) (25,034)  Net premises and equipment $ 13,741 $ 14,058  The following table shows the amount of depreciation and rental expense for the years ended December 31:    2017 2016 2015  Depreciation expense $ 1,236 $ 1,270 $ 1,269  Rent expense on leases $ 704 $ 713 $ 735  The Corporation leases various premises and equipment for use in banking operations through 2032. Some of these leases provide renewal options of varying terms. The rental cost of these optional renewals is not included below. At December 31, 2017 , future minimum payments on these leases are as follows:    (Dollars in thousands)  2018 $ 634  2019 523  2020 490  2021 485  2022 482  2023 and beyond 3,628  Total $ 6,242 

Other Real Estate Owned

Other Real Estate Owned	12 Months Ended
	Dec. 31, 2017
Other Real Estate Owned [Abstract]
Other Real Estate Owned	Note 8. Other Real Estate Owned  The following table summarizes the changes in other real estate owned for the years ended December 31:        (Dollars in thousands) 2017 2016 2015  Balance at beginning of the period $ 4,915 $ 6,451 $ 3,666  Additions 90 329 3,626  Proceeds from dispositions (2,298) (625) (508)  (Loss) gain on sales, net (26) (31) 32  Valuation adjustment (83) (1,209) (365)  Balance at the end of the period $ 2,598 $ 4,915 $ 6,451

Intangible Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2017
Intangible Assets [Abstract]
Intangible Assets	Note 9. Intangible Assets  The Bank has $9.0 million of goodwill recorded on its balance sheet as the result of corporate acquisitions. Goodwill is not amortized, nor deductible for tax purposes. Goodwill was tested for impairment using the qualitative assessment method as of August 31, 2017. Based upon this assessment, Management determined the Bank’s goodwill was not impaired. 

Deposits

Deposits	12 Months Ended
	Dec. 31, 2017
Deposits [Abstract]
Deposits	 Note 10. Deposits  Deposits are summarized as follows at December 31 :      (Dollars in thousands) 2017 2016  Noninterest-bearing checking $ 196,853 $ 170,345   Interest-bearing checking 280,944 241,906  Money management 415,045 420,309  Savings 78,868 74,925  Total interest-bearing checking and savings 774,857 737,140   Retail time deposits 72,211 71,264  Brokered time deposits 3,260 3,371  Total time deposits 75,471 74,635  Total deposits $ 1,047,181 $ 982,120   Overdrawn deposit accounts reclassified as loans $ 154 $ 181  The following table shows the maturit y of time deposits greater than $ 25 0,000 at December 31, 2017 :      (Dollars in thousands)  Maturity distribution:  Within three months $ 9,964  Over three through six months 628  Over six through twelve months 755  Over twelve months 672  Total $ 12,019   Time deposits greater than $250,000 at December 31, 2016 were $6.2 million .  A t December 31, 2017 the scheduled maturities of time deposits are as follows:    Retail Brokered Total  (Dollars in thousands) Time Deposits Time Deposits Time Deposits  2018 $ 46,338 $ 3,008 $ 49,346  2019 10,451 252 10,703  2020 7,414 — 7,414  2021 3,680 — 3,680  2022 4,328 — 4,328  Total $ 72,211 $ 3,260 $ 75,471 The deposits of directors, executive officers, related interests and affiliated enterprises totaled $4.1 million and $3.3 million at December 31, 2017 and 2016, respectively.

Other Borrowings

Other Borrowings	12 Months Ended
	Dec. 31, 2017
Other Borrowings [Abstract]
Other Borrowings	Note 11. Other Borrowings  The Bank's short-term borrowings are comprised of a line-of-credit with the Federal Home Loan Bank of Pittsburgh (Open Repo Plus). Open Repo Plus is a revolving term commitment used on an overnight basis. The term of this commitment may not exceed 364 days and it reprices daily at market rates. These borrowings at December 31 are described below:    2017 2016  FHLB FHLB  (Dollars in thousands) Open Repo Open Repo  Ending balance $ — $ 24,270  Weighted average rate at year end — 0.74%  Range of interest rates paid at year end — 0.74%  Maximum month-end balance during the year $ 13,000 $ 24,270  Average balance during the year $ 1,894 $ 5,258  Weighted average interest rate during the year 0.83% 0.63%  The Bank’s maximum borrowing capacity with the FHLB at December 31, 2017 was $314.6 million with $314.6 million available to borrow. The Bank has established credit at the Federal Reserve Discount Window and as of year-end had the ability to borrow approximately $20 million. The Bank also has a $6 million unsecured line of credit at a correspondent bank.

Federal Income Taxes

Federal Income Taxes	12 Months Ended
	Dec. 31, 2017
Federal Income Taxes [Abstract]
Federal Income Taxes	Note 12. Federal Income Taxes  The temporary differences which give rise to significant portions of deferred tax assets and liabilities at December 31 are as follows:    (Dollars in thousands)  Deferred Tax Assets 2017 2016  Allowance for loan losses $ 2,476 $ 3,766  Deferred compensation 676 986  Purchase accounting 16 23  Deferred loan fees and costs, net 99 160  Capital loss carryover 173 280  Other than temporary impairment of investments 124 260  Accumulated other comprehensive loss 1,603 2,171  Depreciation — 45  Other 2,191 561  7,358 8,252  Valuation allowance (297) (467)  Total gross deferred tax assets 7,061 7,785   Deferred Tax Liabilities  Depreciation 162 —  Joint ventures and partnerships 28 36  Pension 1,068 1,886  Mortgage servicing rights — 19  Total gross deferred tax liabilities 1,258 1,941  Net deferred tax asset $ 5,803 $ 5,844  In assessing the realizability of deferred tax assets, M anagement considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning strategies in making this assessment. Based on the level of historical taxable income and projections for future taxable income over the periods in which the deferred tax assets are deductible, M anagement believes it is more likely than not that the Bank will realize the benefits of these deferred tax assets other than those for which a valuation allowance has been recorded .  The components of the provision for Federal income taxes attributable to income from operations were as follows:    For the Years Ended December 31  (Dollars in thousands) 2017 2016 2015  Current tax expense $ 4,396 $ 2,134 $ 2,382  Deferred tax expense (benefit) (831) (832) (111)  Income tax provision $ 3,565 $ 1,302 $ 2,271  For the years ended December 31, 2017 , 2016 , and 2015 , the income tax provisions are different from the tax expense which would be computed by applying the Federal statutory rate to pretax operating earnings. A reconciliation between the tax provision at the statutory rate and the tax provision at the effective tax rate is as follows:    For the Years Ended December 31  (Dollars in thousands) 2017 2016 2015  Tax provision at statutory rate ( 34% ) $ 3,252 $ 3,192 $ 4,241  Income on tax-exempt loans and securities (2,056) (1,751) (1,566)  Nondeductible interest expense relating to carrying tax-exempt obligations 32 24 22  Revaluation of deferred tax assets 2,291 — —  Dividends received exclusion — — (2)  Income from bank owned life insurance (171) (210) (182)  Life insurance proceeds — — (35)  Change in valuation allowance — — (200)  Stock option compensation 55 30 25  Other, net 162 17 (32)  Income tax provision $ 3,565 $ 1,302 $ 2,271   Effective income tax rate 62.1% 13.9% 18.2%  In 2017, income tax expense and the effective tax rate increased due to the write-down of net deferred tax assets as a result of the passage of the Tax Cuts and Jobs Act of 2017 (the Act). The Act reduced the federal corporate income tax rate to 21% , effective January 1, 2018, from the Corporation’s statutory rate of 34% in prior periods. With the passage of the Act, net deferred tax assets were required to be revalued using the new rate of 21%. The Corporation recorded additional income tax expense of $2.3 million in 2017 as a result of the revaluation of net deferred tax assets. The Corporation has determined that the accounting for the Tax Cuts and Jobs Act is final as of December 31, 2017.  At December 31, 2017, the Corporation had a capital loss carryover of $82 3 thousand, with $663 thousand expiring in 2018. This loss carryover can only be offset with capital gains for federal income tax purposes. The tax benefit of this carryover is $173 thousand, and the Corporation has recorded a valuation allowance of $173 thousand against the capital loss carryover.  The Corporation recognizes interest accrued related to unrecognized tax benefits and penalties in income tax expense for all periods presented. No penalties or interest were recognized in 2017, 2016 or 2015. The Corporation has no uncertain tax positions at December 31, 2017. The Corporation is no longer subject to U.S. Federal examinations by tax authorities for the years before 2014.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2017
Accumulated Other Comprehensive Loss [Abstract]
Accumulated Other Comprehensive Loss	Note 13. Accumulated Other Comprehensive Loss  The components of accumulated other comprehensive loss included in shareholders' equity at December 31 are as follows:      (Dollars in thousands) 2017 2016  Net unrealized gains (losses) on securities $ 154 $ (20)  Tax effect (33) 7  Net of tax amount 121 (13)   Accumulated pension adjustment (7,784) (6,366)  Tax effect 1,635 2,164  Net of tax amount (6,149) (4,202)   Total accumulated other comprehensive loss $ (6,028) $ (4,215) 

Benefit Plans

Benefit Plans	12 Months Ended
	Dec. 31, 2017
Benefit Plans [Abstract]
Benefit Plans	Note 1 4 . Benefit Plans  The Bank has a 401(k) plan covering substantially all employees of F&M Trust who have completed one year and 1,000 hours of service. Employee contributions to the plan are matched at 100% up to 4% of each participant’s deferrals plus 50% of the next 2% of deferrals from participants’ eligible compensation. Under this plan, the maximum amount of employee contributions in any given year is defined by Internal Revenue Service regulations. In addition, a 100% discretionary profit sharing contribution of up to 2% of each employee’s eligible compensation is possible provided net income targets are achieved. T he Personnel Committee of the Corporation’s Board of Directors approves the established net income targets annually. Effective January 1, 2017 the time in service requirement for 401(k) eligibility was reduced from one year to four months, the hours of service requirement was removed and an auto-enrollment feature was added. The related expense for the 401(k) plan, and the profit sharing plan as approved by the Board of Directors, was $707 thousand in 2017, $494 thousand in 2016, and $606 thousand in 2015.  The Bank has a noncontributory defined benefit pension plan covering employees hired prior to April 1, 2007. The pension plan was closed to new participants on April 1, 2007. Benefits are based on years of service and the employee’s compensation using a career average formula. The Bank’s funding policy is to contribute the annual amount required to meet the minimum funding requirements of the Employee Retirement Income Security Act of 1974. Contributions are intended to provide not only for the benefits attributed to service to date but also for those expected to be earned in the future. Employees who are eligible for pension benefits may elect to receive an annuity style payment or a lump-sum payout of their pension benefits.  The return on pension assets and the discount rate are the two largest variables in determining pension expense. A low rate environment generally results in higher pension expense. The Bank uses the Citigroup Above Median Pension Discount Curve from the Citigroup Pension Discount Curve and Liability Index for its discount rate. The Bank’s pension expense for each of the last three years is shown in the section of the following table titled “Components of Net Periodic Pension Cost”. The pension expense in 2017 was less than in 2016 due to the expense of a lump sum settlement loss that was recorded in 2016.  Pension plan asset classes include cash, fixed income securities and equities. The fixed income portion is comprised of Government Bonds, Corporate Bonds and Taxable Municipal Bonds; the equity portion is comprised of financial institution equities and individual corporate equities across a broad range of sectors. Investments are made on the basis of sound economic principles and in accordance with established guidelines. Target allocations of fund assets measured at fair value are as follows: fixed income, a range of 60% -90% , equities, a range of 10% to 30% and cash as needed. The allocation as of December 31, 2017 is shown in a table within this note. The Bank manages its pension portfolio in order to closely align the duration of the assets with the duration of the pension liability.  On a regular basis, the Pension and Benefits Committee (the “Committee”) monitors the allocation to each asset class. Due to changes in market conditions, the asset allocation may vary from time to time. The Committee is responsible to direct the rebalancing of Plan assets when allocations are not within the established guidelines and to ensure that such action is implemented. The Bank attempts to allocate the pension assets in a manner that the cash flow from the assets is similar to the cash flow of the liabilities. This has and will continue to result in a smaller allocation of equity investments and a higher allocation of longer duration bonds. By closely matching the asset and liability cash flow, large fluctuations in projected benefit obligations should be reduced.  Specific guidelines for fixed income investments are that no individual bond shall have a rating of less than an A as rated by Standard and Poor’s and Moody’s at the time of purchase. If the rating subsequently falls below an A rating, the Committee, at its next quarterly meeting, will discuss the merits of retaining that particular security. Allowable securities include obligations of the U.S. Government and its agencies, CDs, commercial paper, corporate obligations and insured municipal bonds.  General guidelines for equities are that a diversified common stock program is used and that diversification patterns can be changed with the ongoing analysis of the outlook for economic and financial conditions. Specific guidelines for equities include a sector cap and an individual stock cap. The guidelines for the sector cap direct that because the Plan sponsor is a bank, a significantly large exposure to the financial sector is permissible; therefore, there is no sector cap for financial equities. All other sectors are limited to 25% of the equity component. The individual stock cap guidelines direct that no one stock may represent more than 5% of the total equity portfolio.  The Committee revisits and determines the expected long-term rate of return on Plan assets annually. The policy of the Committee has been to take a conservative approach to all Plan assumptions. This rate is reviewed annually and historical investment returns play a significant role in determining what this rate should be.  The following table sets forth the plan’s funded status, based on the December 31, 2017 , 2016 and 2015 actuarial valuations.    For the Years Ended December 31  (Dollars in thousands) 2017 2016 2015  Change in projected benefit obligation  Benefit obligation at beginning of measurement year $ 17,881 $ 18,609 $ 19,679  Service cost 317 337 377  Interest cost 667 701 695  Actuarial loss (gain) 2,260 632 (906)  Settlement loss — (1,590) —  Benefits paid (1,236) (808) (1,236)  Benefit obligation at end of measurement year 19,889 17,881 18,609   Change in plan assets  Fair value of plan assets at beginning of measurement year 17,062 18,301 19,677  Actual return on plan assets net of expenses 1,366 1,159 (140)  Settlement loss — (1,590) —  Employer contribution — — —  Benefits paid (1,236) (808) (1,236)  Fair value of plan assets at end of measurement year 17,192 17,062 18,301   Funded status of projected benefit obligation $ (2,697) $ (819) $ (308)     Amounts recognized in accumulated other comprehensive For the Years Ended December 31  income (loss), net of tax 2017 2016 2015  Net actuarial loss $ (7,784) $ (6,366) $ (6,871)  Prior service cost obligation — — 94  (7,784) (6,366) (6,777)  Tax effect 1,635 2,164 2,304  Net amount recognized in accumulated other comprehensive loss $ (6,149) $ (4,202) $ (4,473)     For the Years Ended December 31  Components of net periodic pension cost 2017 2016 2015  Service cost $ 317 $ 337 $ 377  Interest cost 667 701 695  Expected return on plan assets (1,072) (1,165) (1,182)  Amortization of prior service cost — (94) (126)  Recognized net actuarial loss 547 579 623  Net periodic pension cost 459 358 387  Effect of settlement loss — 564 —  Total pension expense $ 459 $ 922 $ 387     For the Years Ended December 31  2017 2016 2015  Assumptions used to determine benefit obligations:  Discount rate 3.46% 3.89% 4.06%  Rate of compensation increase 4.00% 4.00% 4.00%   Assumptions used to determine net periodic benefit cost:  Discount rate 3.89% 3.89% 3.72%  Expected long-term return on plan assets 6.50% 6.50% 6.50%  Rate of compensation increase 4.00% 4.00% 4.00%   Asset allocations:  Cash and cash equivalents 2% 4% 8%  Common stocks 24% 33% 31%  Corporate bonds 18% 8% 7%  Municipal bonds 38% 42% 43%  Investment fund - debt 9% 9% 8%  Insurance contracts 4% 3% 2%  Other 5% 1% 1%  Total 100% 100% 100%   Shares of the Corporation's common stock held in the plan  Value of shares (in thousands) $ — $ — $ 68  Percent of total plan assets 0.0% 0.0% 0.4%  The following table sets forth by level, within the fair value hierarchy, the Plan's investments at fair value as of December 31, 2017 and 2016 . For more information on the levels within the fair value hierarchy, please refer to Note 19.     (Dollars in Thousands) December 31, 2017  Asset Description Fair Value Level 1 Level 2 Level 3  Cash and cash equivalents $ 399 $ 399 $ — $ —  Common stocks 4,158 4,158 — —  Corporate bonds 3,108 — 3,108 —  Municipal bonds 6,556 — 6,556 —  Investment fund - debt 1,570 1,570 — —  Cash value of life insurance 25 — — 25  Deposit in immediate participation guarantee contract 683 683 — —  Other 693 143 550 —  Total assets $ 17,192 $ 6,953 $ 10,214 $ 25     (Dollars in Thousands) December 31, 2016  Asset Description Fair Value Level 1 Level 2 Level 3  Cash and cash equivalents $ 726 $ 726 $ — $ —  Common stocks 5,688 5,688 — —  Corporate bonds 1,310 — 1,310 —  Municipal bonds 7,146 — 7,146 —  Investment fund - debt 1,454 1,454 — —  Cash value of life insurance 25 — — 25  Deposit in immediate participation guarantee contract 479 479 —  Other 234 234 — —  Total assets $ 17,062 $ 8,581 $ 8,456 $ 25  The following table sets forth a summary of the changes in the fair value of the Plan's level 3 investments for the years ended December 31, 2017 and 2016    Cash Value of Life Insurance  December 31  2017 2016  Balance at the beginning of the period $ 25 $ 62  Unrealized gain (loss) relating to investments held at the reporting date — 1  Purchases, sales, issuances and settlement, net — (38)  Balance at the end of the period $ 25 $ 25  Contributions  The Bank contributed $1 .0 million to its pension plan in February 2018, but does not expect to make any additional contributions in 2018.  Estimated future benefit payments at December 31, 2017 (in thousands )     2018 $ 1,043  2019 1,064  2020 1,483  2021 969  2022 1,209  2023-2027 6,580  Total $ 12,348

Stock Purchase Plans

Stock Purchase Plans	12 Months Ended
	Dec. 31, 2017
Stock Purchase Plans [Abstract]
Stock Purchase Plans	Note 15. Stock Based Compensation  In 2004, the Corporation adopted the Employee Stock Purchase Plan of 2004 (ESPP). Under the ESPP of 2004, options for 250,000 shares of stock can be issued to eligible employees. The number of shares that can be purchased by each participant is defined by the plan and the Board of Directors sets the option price. However, the option price cannot be less than 90% of the fair market value of a share of the Corporation’s common stock on the date the option is granted. The Board of Directors also determines the expiration date of the options; however, no option may have a term that exceeds one year from the grant date. ESPP options are exercisable immediately upon grant. Any shares related to unexercised options are available for future grant The Board of Directors may amend, suspend or terminate the ESPP at any time. The grant price of the 2017 ESPP options was set at 95% of the stock’s fair value at the time of the award. There was no compensation expense recognized in 2017, 2016 or 2015 for the ESPP.  In 2002, the Corporation adopted the Incentive Stock Option Plan of 2002 (ISOP). The plan had a 10 year life with regard to awarding options and expired in 2012. However, awards granted prior to expiration of the plan will continue to be exercisable in accordance with the plan. In 2013, the Corporation approved the Incentive Stock Option Plan of 2013. Under the 2013 ISOP, options for 354,877 shares of stock were authorized to be issued to selected Officers, as defined in the plan. The number of options available to be awarded to each eligible Officer is determined by the Board of Directors, but is limited with respect to the aggregate fair value of the options as defined in the plan. The exercise price of the option may be no less than 100% of the fair value of a share of the Corporation’s common stock on the date the option is granted. The options have a life of 10 years and may be exercised only after the optionee has completed 6 months of continuous employment with the Corporation or its Subsidiary immediately following the grant date, or upon a change of control as defined in the plan. If awards are granted, the Corporation uses the “simplified” method for estimating the expected term of the ISO award. The risk-free interest rate is the U.S. Treasury rate commensurate with the expected average life of the option at the date of grant.  The ESPP and ISOP options outstanding at December 31, 2017 are all exercisable. The ESPP options expire on Ju ne 30 , 201 8 and the ISOP options expire 10 years from the grant date. The following table summarizes the stock option activity:     (Dollars in thousands except share and per share data)  ESPP Weighted Average Aggregate  Options Price Per Share Intrinsic Value  Balance Outstanding at December 31, 2014 25,970 $ 18.91  Granted 23,379 23.42  Exercised (4,794) 19.17  Expired (22,269) 19.08  Balance Outstanding at December 31, 2015 22,286 $ 23.42 $ 2  Granted 24,434 22.46  Exercised (907) 22.66  Expired (23,055) 23.38  Balance Outstanding at December 31, 2016 22,758 $ 22.46 $ 140  Granted 19,086 29.95  Exercised (6,827) 23.00  Expired (17,180) 22.79  Balance Outstanding at December 31, 2017 17,837 $ 29.95 $ 132   Shares available for future grants at December 31, 2017 200,082     ISOP Weighted Average Aggregate  Options Price Per Share Intrinsic Value  Balance Outstanding at December 31, 2014 44,075 $ 23.29  Granted 17,500 22.00  Exercised — —  Forfeited (8,500) 25.29  Balance Outstanding at December 31, 2015 53,075 $ 22.56 $ 50  Granted 24,450 21.27  Exercised (3,800) 16.00  Forfeited (15,000) 24.14  Balance Outstanding at December 31, 2016 58,725 $ 22.03 $ 386  Granted 33,450 30.00  Exercised (750) 23.77  Forfeited (6,200) 27.37  Balance Outstanding at December 31, 2017 85,225 $ 24.75 $ 1,075   Shares available for future grants at December 31, 2017 290,177  The following table provides information about the options outstanding at December 31, 2017 :     Options Weighted  Outstanding Exercise Price or Weighted Average Average Remaining  Stock Option Plan and Exercisable Price Range Exercise Price Life (years)  Employee Stock Purchase Plan 17,837 $ 29.95 $ 29.95 0.5   Incentive Stock Option Plan 5,500 16.11 16.11 1.2  Incentive Stock Option Plan 37,350 21.27 - 22.05 21.56 7.8  Incentive Stock Option Plan 8,925 23.77 23.77 0.1  Incentive Stock Option Plan 33,450 30.00 30.00 9.2  ISOP Total/Average 85,225 $ 24.75 7.1  The fair value of the ISOP options granted has been estimated using the Black-Scholes method and the following assumptions for the years shown:     2017 2016 2015  Incentive Stock Option Plan  Options granted 33,450 24,450 17,500  Risk-free interest rate 1.87% 1.22% 1.47%  Expected volatility of the Corporation's stock 23.12% 25.76% 28.64%  Expected dividend yield 2.94% 3.23% 3.09%  Expected life (in years) 5.25 5.25 5.25  Weighted average fair value of options granted $ 4.81 $ 3.58 $ 4.22   (Dollars in thousands)  Compensation expense included in net income  ESPP $ — $ — $ —  ISOP 161 88 74  Total compensation expense included in net income $ 161 $ 88 $ 74

Deferred Compensation Agreement

Deferred Compensation Agreement	12 Months Ended
	Dec. 31, 2017
Deferred Compensation Agreement [Abstract]
Deferred Compensation Agreement	Note 16. Deferred Compensation Agreement  The Corporation has entered into deferred compensation agreements with one former and one current director that provides for the payment of benefits over a ten -year period, beginning at age 65 . At inception, the present value of the obligations under these deferred compensation agreements amounted to approximately $600 thousand, which is being accrued over the estimated remaining service period of these directors. Expense associated with the agreements was $2 thousand for 2017 , $2 thousand for 2016 and $76 thousand for 2015 . Payments for the directors deferred compensation plan are scheduled through 2022.  The Bank also has a Director’s Deferred Compensation Plan, whereby each director may voluntarily participate and elect each year to defer all or a portion of their Bank director’s fees. Each participant directs the investment of their own account among various publicly available mutual funds designated by the Bank’s Investment and Trust Services department. Changes in the account balance beyond the amount deferred to the account are solely the result of the performance of the selected mutual fund. The Bank maintains an offsetting asset and liability for the deferred account balances and the annual expense is recorded as a component of director’s fees as if it were a direct payment to the director. The Bank will not incur any expense when the account goes into payout.  The Corporation has two deferred compensation agreements it recorded as part of its acquisition of Fulton Bancshares Corporation in 2006. No future expense will be recognized for these plans. Payments for the deferred compensation agreements total $386 thousand through 2021.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2017
Shareholders' Equity [Abstract]
Shareholders’ Equity	Note 17. Shareholders’ Equity The Board of Directors, from time to time, authorizes the repurchase of the Corporation’s $1.00 par value common stock. The repurchased shares will be held as Treasury shares available for issuance in connection with future stock dividends and stock splits, employee benefit plans, executive compensation plans, the Dividend Reinvestment Plan (DRIP) and other appropriate corporate purposes. The term of the repurchase plans is normally one year. The Corporation held 334,311 and 371,513 treasury shares at cost at December 31, 2017 and 2016 , respectively.  The following table provides information about the Corporation’s stock repurchase activity:    Shares Repurchased  Plan Date Authorized Expiration 2017 2016  4/18/2016 $350,000 in shares per calendar quarter 3/31/2017 - 34,048  10/12/2017 100,000 shares 9/30/2018 - N/A  The Corporation’s DRI P allows for shareholders to purchase additional shares of the Corporation’s common stock by reinvesting cash dividends paid on their shares or through optional cash payments. The Corporation has authorized one million (1,000,000) shares of its currently authorized common stock to be issued under the plan or may issue from Treasury shares . The DRIP added $991 thousand to capital during 2017. This total was comprised of $669 thousand from the reinvestment of quarterly dividends and $322 thousand of optional cash contributions. During 2017, 30,375 shares of common stock were purchased through the DRIP at a value of $991 thousand and 614,355 shares remain to be issued

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies [Abstract]
Commitments and Contingencies	Note 18. Commitments and Contingencies  In the normal course of business, the Bank is a party to financial instruments that are not reflected in the accompanying financial statements and are commonly referred to as off-balance-sheet instruments. These financial instruments are entered into primarily to meet the financing needs of the Bank’s customers and include commitments to extend credit and standby letters of credit. Those instruments involve, to varying degrees, elements of credit and interest rate risk not recognized in the consolidated balance sheet.  The Corporation’s exposure to credit loss in the event of nonperformance by other parties to the financial instruments for commitments to extend credit and standby letters of credit is represented by the contract or notional amount of those instruments. The Bank uses the same credit policies in making commitments and conditional obligations as they do for on-balance-sheet instruments.  The Bank had the following outstanding commitments as of December 31:    (Dollars in thousands) 2017 2016  Financial instruments whose contract amounts represent credit risk  Commercial commitments to extend credit $ 249,526 $ 227,380  Consumer commitments to extend credit (secured) 44,866 44,352  Consumer commitments to extend credit (unsecured) 5,668 5,674  $ 300,060 $ 277,406  Standby letters of credit $ 28,630 $ 23,935  Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses with the exception of home equity lines and personal lines of credit and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Bank evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Bank, is based on Management’s credit evaluation of the counterparty. Collateral for most commercial commitments varies but may include accounts receivable, inventory, property, plant, and equipment, and income-producing commercial properties. Collateral for secured consumer commitments consists of liens on residential real estate.  Standby letters of credit are instruments issued by the Bank, which guarantee the beneficiary payment by the Bank in the event of default by the Bank’s customer in the nonperformance of an obligation or service. Most standby letters of credit are extended for one -year periods. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The Bank holds collateral supporting those commitments for which collateral is deemed necessary primarily in the form of certificates of deposit and liens on real estate. Management believes that the proceeds obtained through a liquidation of such collateral would be sufficient to cover the maximum potential amount of future payments required under the corresponding guarantees. The current amount of the liability as of December 31, 2017 and 2016 for guarantees under standby letters of credit issued is not material.  Most of the Bank’s business activity is with customers located within its primary market and does not involve any significant concentrations of credit to any one entity or industry.  Legal Proceedings  The nature of the Corporation’s business generates a certain amount of litigation involving matters arising in the ordinary course of business, including the Kalan et al. v. Farmers and Merchants Trust Company of Chambersburg eta.l (Case No. 2:15-CV-01435-WB) case filed in the United States District Court for the Eastern District of Pennsylvania. On December 29, 2017, the Bank entered into a Class Action Settlement Term Sheet with the named plaintiffs and certain of the other remaining defendants. The Term Sheet provides for the Bank to make a settlement payment of $10 million in full and final settlement of all claims that the named plaintiffs and members of the Settlement Class (as defined by the Term Sheet) have brought or could have brought against F&M Trust. The Term Sheet further provides that the parties will enter into a definitive settlement agreement that is to provide for a general release of all claims by all parties to the case. The terms of settlement will be subject to preliminary and final approval by the court. The Corporation has accrued, in other liabilities, the $10 million settlement payment as an expense for the year ended December 31, 2017.  We establish accruals for legal proceedings when information related to the loss contingencies represented by those matters indicates both that a loss is probable and the amount of the loss can be reasonably estimated. When we are able to do so, we also determine estimates of possible losses, whether in excess of any accrued liability or where there is no accrued liability.  These assessments are based on our analysis of currently available information and are subject to significant judgment and a variety of assumptions and uncertainties. As new information is obtained, we may change our assessments and, as a result, take or adjust the amounts of our accruals and change our estimates of possible losses or ranges of possible losses. Due to the inherent subjectivity of the assessments and the unpredictability of outcomes of legal proceedings, any amounts that may be accrued or included in estimates of possible losses or ranges of possible losses may not represent the actual loss to the Corporation from any legal proceeding. Our exposure and ultimate losses may be higher, possibly significantly higher, than amounts we may accrue or amounts we may estimate.  In management’s opinion, we do not anticipate, at the present time, that the ultimate aggregate liability, if any, arising out of all litigation to which the Corporation is a party will have a material adverse effect on our financial position. We cannot now determine, however, whether or not any claim asserted against us, other than the Kalan case, will have a material adverse effect on our results of operations in any future reporting period, which will depend on, among other things, the amount of loss resulting from the claim and the amount of income otherwise reported for the reporting period. Thus, at December 31, 2017, we are unable to provide an evaluation of the likelihood of an unfavorable outcome or an estimate of the amount or range of potential loss with respect to such other matters and, accordingly, have not yet established any specific accrual for such other matters.  No material proceedings are pending or are known to be threatened or contemplated against us by governmental authorities. 

Fair Value Measurements And Fai

Fair Value Measurements And Fair Values Of Financial Instruments	12 Months Ended
	Dec. 31, 2017
Fair Value Measurements And Fair Values Of Financial Instruments [Abstract]
Fair Value Measurements And Fair Values Of Financial Instruments	Note 19 . Fair Value Measurements and Fair Values of Financial Instruments  Management uses its best judgment in estimating the fair value of the Corporation’s financial instruments; however, there are inherent weaknesses in any estimation technique. Therefore, for substantially all financial instruments, the fair value estimates herein are not necessarily indicative of the amounts the Corporation could have realized in a sales transaction on the dates indicated. The estimated fair value amounts have been measured as of their respective year-ends and have not been re-evaluated or updated for purposes of these financial statements subsequent to those respective dates. As such, the estimated fair values of these financial instruments subsequent to the respective reporting dates maybe different than the amounts reported at each year-end.  FASB ASC Topic 820, “Financial Instruments”, requires disclosure of the fair value of financial assets and liabilities, including those financial assets and liabilities that are not measured and reported at fair value on a recurring and nonrecurring basis. The Corporation does not report any nonfinancial assets at fair value. FASB ASC Topic 820 establishes a fair value hierarchy that prioritizes the inputs to valuation methods used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy under FASB ASC Topic 820 are as follows:  Level 1 : Valuation is based on unadjusted, quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.  Level 2 : Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. There may be substantial differences in the assumptions used for securities within the same level. For example, prices for U.S. Agency securities have fewer assumptions and are closer to level 1 valuations than the private label mortgage backed securities that require more assumptions and are closer to level 3 valuations.  Level 3 : Valuation is generated from model-based techniques that use significant assumptions not observable in the market. These unobservable assumptions reflect the Corporation’s assumptions regarding what market participants would assume when pricing a financial instrument.  An asset’s or liability’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The level within the hierarchy does not represent risk.  The following methods and assumptions were used to estimate the fair values of the Corporation’s financial instruments at December 31, 2017 and 2016 .  Cash and c ash e quivalents: For these short-term instruments, the carrying amount is a reasonable estimate of fair value.  Investment securities: The fair value of investment securities is determined in accordance with the methods described under FASB ASC Topic 820.  Restricted stock: The carrying value of restricted stock approximates its fair value based on redemption provisions for the restricted stock.  Loans held for sale: The fair value of loans held for sale is determined by the price set between the Bank and the purchaser prior to origination. These loans are usually sold at par.  Net loans: The fair value of fixed-rate loans is estimated for each major type of loan (e.g. real estate, commercial, industrial and agricultural and consumer) by discounting the future cash flows associated with such loans using rates currently offered for loans with similar terms to borrowers of comparable credit quality. The model considers scheduled principal maturities, repricing characteristics, prepayment assumptions and interest cash flows. The discount rates used are estimated based upon consideration of a number of factors including the treasury yield curve, expense and service charge factors. For variable rate loans that reprice frequently and have no significant change in credit quality, carrying values approximate the fair value.  Accrued i nterest r eceivable: T he carrying amount is a reasonable estimate of fair value.  Deposits and other borrowings : The fair value of demand deposits, savings accounts, and money market deposits is the amount payable on demand at the reporting date. The fair value of fixed-rate certificates of deposit and long-term debt is estimated by discounting the future cash flows using rates approximating those currently offered for certificates of deposit and borrowings with similar remaining maturities. Other borrowings consist of a line of credit with the FHLB at a variable interest rate and securities sold under agreements to repurchase, for which the carrying value approximates a reasonable estimate of the fair value.  Accrued interest payable: The carrying amount is a reasonable estimate of fair value.  The fair value of the Corporation's financial instruments are as follows:     December 31, 2017  Carrying Fair  (Dollars in thousands) Amount Value Level 1 Level 2 Level 3  Financial assets:  Cash and cash equivalents $ 58,603 $ 58,603 $ 58,603 $ — $ —  Investment securities available for sale 127,336 127,336 365 126,971 —  Restricted stock 456 456 — 456 —  Loans held for sale 442 442 — 442 —  Net loans 931,908 929,891 — — 929,891  Accrued interest receivable 3,847 3,847 — 3,847 —   Financial liabilities:  Deposits $ 1,047,181 $ 1,046,476 $ — $ 1,046,476 $ —  Accrued interest payable 149 149 — 149 —   December 31, 2016  Carrying Fair  (Dollars in thousands) Amount Value Level 1 Level 2 Level 3  Financial assets:  Cash and cash equivalents $ 36,665 $ 36,665 $ 36,665 $ — $ —  Investment securities available for sale 143,875 143,875 290 143,585 —  Restricted stock 1,767 1,767 — 1,767 —  Loans held for sale 540 540 — 540 —  Net loans 882,798 889,910 — — 889,910  Accrued interest receivable 3,592 3,592 — 3,592 —   Financial liabilities:  Deposits $ 982,120 $ 981,949 $ — $ 981,949 $ —  Short-term debt 24,270 24,270 24,270 — —  Accrued interest payable 116 116 — 116 —   Recurring Fair Value Measurements  For financial assets and liabilities measured at fair value on a recurring basis, the fair value measurements by level within the fair value hierarchy used at December 31, 2017 and 2016 are as follows:     (Dollars in Thousands Fair Value at December 31, 2017  Asset Description Level 1 Level 2 Level 3 Total  Equity securities $ 365 $ — $ — $ 365  U.S. Government and Agency securities — 11,472 — 11,472  Municipal securities — 57,772 — 57,772  Trust Preferred Securities — 5,817 — 5,817  Agency mortgage-backed securities — 50,937 — 50,937  Private-label mortgage-backed securities — 946 — 946  Asset-backed securities — 27 — 27  Total assets $ 365 $ 126,971 $ — $ 127,336      (Dollars in Thousands) Fair Value at December 31, 2016  Asset Description Level 1 Level 2 Level 3 Total  Equity securities $ 290 $ — $ — $ 290  U.S. Government and Agency securities — 12,720 — 12,720  Municipal securities — 62,985 — 62,985  Trust Preferred Securities — 5,461 — 5,461  Agency mortgage-backed securities — 61,284 — 61,284  Private-label mortgage-backed securities — 1,104 — 1,104  Asset-backed securities — 31 — 31  Total assets $ 290 $ 143,585 $ — $ 143,875  Investment securities : Level 1 securities represent equity securities that are valued using quoted market prices from nationally recognized markets. Level 2 securities represent debt securities that are valued using a mathematical model based upon the specific characteristics of a security in relationship to quoted pri ces for similar securities.  Nonrecurring Fair Value Measurements  For financial assets measured at fair value on a nonrecurring basis, the fair value measurements by level within the fair value hierarchy used at December 31, 2017 and 2016 are as follows:     (Dollars in Thousands) Fair Value at December 31, 2017  Asset Description Level 1 Level 2 Level 3 Total  Other real estate owned (1) $ — $ — $ 90 $ 90  Total assets $ — $ — $ 90 $ 90      (Dollars in Thousands) Fair Value at December 31, 2016  Asset Description Level 1 Level 2 Level 3 Total  Premises held-for-sale (1) $ — $ — $ 200 $ 200  Other real estate owned (1) — — 2,407 2,407  Total assets $ — $ — $ 2,607 $ 2,607  (1) Includes assets directly charged-down to fair value during the year-to-date period.  The Corporation used the following methods and significant assumptions to estimate the fair values for financial assets measured at fair value on a nonrecurring basis.  Other real estate : The fair value of other real estate, upon initial recognition, is obtained through a process similar to the valuation process for impaired loans. In connection with the measurement and initial recognition of the foregoing assets, the Corporation recognizes charge-offs through the allowance for loan losses.  Premises held-for-sale : The fair value of premises held-for-sale is obtained through a process similar to the valuation process for other real estate.  The Corporation did not record any liabilities at fair value for which measurement of the fair value was made on a nonrecurring basis at December 31, 2017 . For financial assets and liabilities measured at fair value on a recurring basis, there were no transfers of financial assets or liabilities between Level 1 and Level 2 during the period ending December 31, 2017 .  The following table presents additional quantitative information about Level 3 assets measured at fair value on a nonrecurring basis:     (Dollars in Thousands) Quantitative Information about Level 3 Fair Value Measurements  December 31, 2017 Fair Value Valuation Technique Unobservable Input (Weighted Average)  Other real estate owned $ 90 Appraisal N/A —  Cost to sell 8% ( 8% )   Range  December 31, 2016 Fair Value Valuation Technique Unobservable Input (Weighted Average)  Premises held-for-sale $ 200 Appraisal Qualitative adjustment 5% ( 5% )   Other real estate owned 2,407 Appraisal N/A —  Cost to sell 8% ( 8% ) 

Parent Company (Franklin Financ

Parent Company (Franklin Financial Services Corporation) Financial Information	12 Months Ended
	Dec. 31, 2017
Parent Company (Franklin Financial Services Corporation) Financial Information [Abstract]
Parent Company (Franklin Financial Services Corporation) Financial Information	Note 2 0 . Parent Company (Franklin Financial Services Corporation) Financial Information  Balance Sheets    December 31  (Dollars in thousands) 2017 2016  Assets:  Cash and cash equivalents $ 250 $ 851  Investment securities 365 —  Equity investment in subsidiaries 114,387 115,794  Other assets 184 39  Total assets $ 115,186 116,684   Liabilities:  Other liabilities $ 42 $ 191  Total liabilities 42 191  Shareholders' equity 115,144 116,493  Total liabilities and shareholders' equity $ 115,186 $ 116,684  Statement s of Income    Years Ended December 31  (Dollars in thousands) 2017 2016 2015  Income:  Dividends from Bank subsidiary $ 3,225 $ 4,006 $ 300  Other income — — 171  3,225 4,006 471  Expenses:  Operating expenses 1,107 972 986  Income before income taxes and equity in undistributed income of subsidiaries 2,118 3,034 (515)  Income tax benefit 348 301 328  Equity in undistributed income of subsidiaries (290) 4,752 10,391  Net income $ 2,176 $ 8,087 $ 10,204  Statements of Comprehensive Income    Years ended December 31  (Dollars in thousands) 2017 2016 2015  Net Income $ 2,176 $ 8,087 $ 10,204  Securities:  Unrealized gains arising during the period 201 — —  Reclassification adjustment for net (gains) losses included in net income - — —  Net Unrealized gains 201 — —  Tax effect (68) — —  Net of tax amount 133 — —  Total other comprehensive income of Parent 133 — —  Other comprehensive (loss) income of subsidiaries (954) (493) (622)  Total Comprehensive Income $ 1,355 $ 7,594 $ 9,582  Statements of Cash Flows    Years Ended December 31  (Dollars in thousands) 2017 2016 2015  Cash flows from operating activities  Net income $ 2,176 $ 8,087 $ 10,204  Adjustments to reconcile net income to net cash provided  by operating activities:  Equity in undistributed loss (income) of subsidiary 290 (4,752) (10,391)  Stock option compensation 161 88 74  Deferred tax benefit (26) — —  (Increase) decrease in other assets/liabilities (337) (307) 1,800  Net cash provided by operating activities 2,264 3,116 1,687   Cash flows from financing activities  Dividends paid (4,031) (3,523) (3,139)  Cash received from option exercises 175 82 92  Common stock issued under dividend reinvestment plan 991 1,671 1,246  Treasury stock purchase — (795) —  Net cash used in financing activities (2,865) (2,565) (1,801)  (Decrease) increase in cash and cash equivalents (601) 551 (114)  Cash and cash equivalents as of January 1 851 300 414  Cash and cash equivalents as of December 31 $ 250 $ 851 $ 300

Quarterly Results Of Operations

Quarterly Results Of Operations	12 Months Ended
	Dec. 31, 2017
Quarterly Results Of Operations [Abstract]
Quarterly Results Of Operations	Note 2 1 . Quarterly Results of Operations (unaudited)  The following is a condensed summary of the quarterly results of consolidated operations of the Corporation for the years ended December 31, 2017 and 2016 :    (Dollars in thousands, except per share) Three months ended  March 31, 2017 June 30, 2017 September 30, 2017 December 31, 2017   Interest income $ 9,546 $ 9,938 $ 10,063 $ 10,339  Interest expense 581 590 629 691  Net interest income 8,965 9,348 9,434 9,648  Provision for loan losses 120 50 250 250  Other noninterest income 2,923 3,155 2,970 3,137  Securities gains 2 — 1 —  Noninterest expense 7,957 8,161 8,305 18,750 *  Income (loss) before income taxes 3,813 4,292 3,850 (6,215)  Federal income tax expense 793 950 774 1,048 **  Net Income $ 3,020 3,342 3,076 (7,263)  Basic earnings per share $ 0.70 $ 0.77 $ 0.71 $ (1.67)  Diluted earnings per share $ 0.70 $ 0.77 $ 0.70 $ (1.67)  Dividends declared per share $ 0.21 $ 0.24 $ 0.24 $ 0.24  * Includes $10 million for the accrual of a legal settlement described in Item 3 Legal Proceedings ** Includes $2.3 million for revaluation of the net deferred tax assets      (Dollars in thousands, except per share) Three months ended  March 31, 2016 June 30, 2016 September 30, 2016 December 31, 2016   Interest income $ 9,098 $ 8,988 $ 9,348 $ 9,544  Interest expense 545 548 563 589  Net interest income 8,553 8,440 8,785 8,955  Provision for loan losses 300 1,875 1,150 450  Other noninterest income 2,981 2,854 2,813 2,984  Securities (losses) gains (28) 2 (10) 8  Noninterest expense 7,795 7,730 7,980 9,670  Income before income taxes 3,411 1,691 2,458 1,827  Federal income tax expense 685 130 383 104  Net Income $ 2,726 1,561 2,075 1,723  Basic earnings per share $ 0.64 $ 0.36 $ 0.48 $ 0.40  Diluted earnings per share $ 0.64 $ 0.36 $ 0.48 $ 0.40  Dividends declared per share $ 0.19 $ 0.21 $ 0.21 $ 0.21 Due to rounding, the sum of the quarters may not equal the amount reported for the year.

Summary Of Significant Accoun30

Summary Of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2017
Summary Of Significant Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation – The consolidated financial statements include the accounts of Franklin Financial Services Corporation (the Corporation) and its wholly-owned subsidiaries; Farmers and Merchants Trust Company of Chambersburg and Franklin Future Fund Inc. Farmers and Merchants Trust Company of Chambersburg is a commercial bank (the Bank) that has one wholly-owned subsidiary, Franklin Financial Properties Corp., which holds real estate assets that are leased by the Bank. Franklin Future Fund Inc. is a non-bank investment company that makes venture capital investments within the Corporation’s primary market area. The activities of non-bank entities are not significant to the consolidated totals. All significant intercompany transactions have been eliminated in consolidation. Management has evaluated subsequent events for potential recognition and/or disclosure through the date these consolidated financial statements were issued. 
Nature Of Operations	Nature of Operations – The Corporation conducts substantially all of its business through its subsidiary bank, Farmers and Merchants Trust Company of Chambersburg, which serves its customer base through twenty-two community-banking offices located in Franklin, Cumberland, Fulton and Huntingdon Counties, Pennsylvania. These counties are considered to be the Corporation’s primary market area, but it may do business in the greater South-Central Pennsylvania market. The Bank is a community-oriented commercial bank that emphasizes customer service and convenience. As part of its strategy, the Bank has sought to develop a variety of products and services that meet the needs of both its retail and commercial customers. The Corporation and the Bank are subject to the regulations of various federal and state agencies and undergo periodic examinations by these regulatory authorities. 
Use Of Estimates In The Preparation Of Financial Statements	Use of Estimates in the Preparation of Financial Statements – The preparation of financial statements in conformity with generally accepted accounting principles requires M anagement to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, and the assessment of other than temporary impairment of investment securities and the valuation allowance on the deferred tax asset. 
Significant Group Concentrations Of Credit Risk	Significant Group Concentrations of Credit Risk – Most of the Corporation’s activities are with customers located within its primary market area. Note 4 of the consolidated financial statements shows the types of securities in which the Corporation invests. Note 5 of the consolidated financial statements shows the types of lending in which the Corporation engages. The Corporation does not have any significant concentrations of any one industry or customer. 
Statement Of Cash Flows	Statement of Cash Flows – For purposes of reporting cash flows, cash and cash equivalents include Cash and due from banks, Interest-bearing deposits in other banks and Federal funds sold. Generally, Federal funds are purchased and sold for one-day periods
Investment Securities	Investment Securities – Management classifies its securities at the time of purchase as available for sale or held to maturity. At December 31, 201 7 and 201 6 , all securities were classified as available for sale, meaning that the Corporation intends to hold them for an indefinite period of time, but not necessarily to maturity. Available for sale securities are stated at estimated fair value, adjusted for amortization of premiums and accretion of discounts which are recognized as adjustments of interest income through call date or maturity. The related unrealized holding gains and losses are reported as other comprehensive income or loss, net of tax, until realized. Declines in the fair value of held-to-maturity and available-for-sale securities to amounts below cost that are deemed to be other-than-temporary are reflected in earnings as realized losses. In estimating the other-than-temporary impairment losses, M anagement considers (1) the length of time and the extent to which the fair value has been less than cost, (2) the financial condition and near-term prospects of the issuer, and (3) determines if the Corporation does not intend to sell the security or it if is not more likely than not that the Corporation will be required to sell the security before recovery of its amortized cost. When a determination is made that an other-than-temporary impairment exists but the Corporation does not intend to sell the debt security and it is not more likely than not that it will be required to sell the debt security prior to its anticipated recovery, the other-than-temporary impairment is separated into (a) the amount of the total other-than-temporary impairment related to a decrease in cash flows expected to be collected from the debt security (the credit loss) and (b) the amount of the total other-than-temporary impairment related to all other factors. The amount of the total other-than-temporary impairment related to the credit loss is recognized in earnings. The amount of the total other-than-temporary impairment related to all other factors is recognized in other comprehensive income. Realized securities gains and losses are computed using the specific identification method. Gains or losses on the disposition of investment securities are based on the net proceeds and the adjusted carrying amount of the specific security sold. Any decision to sell a security classified as available for sale would be based on various factors, including significant movement in interest rates, changes in maturity or mix of the Bank’s assets and liabilities, liquidity needs, regulatory capital considerations and other similar factors. 
Restricted Stock	Restricted Stock – – Restricted stock, which is carried at cost, consists of stock of the Federal Home Loan Bank of Pittsburgh (FHLB) and Atlantic Central Bankers Bank (ACBB). The Bank held $456 thousand of restricted stock at the end of 2017. With the exception of $30 thousand, this investment represents stock in the FHLB that the Bank is required to hold in order to be a member of FHLB and is carried at a cost of $100 per share. FHLB stock is divided into two classes: membership stock and activity stock, which is based on outstanding loan balances. Federal law requires a member institution of the FHLB to hold FHLB stock according to a predetermined formula. Management evaluates the restricted stock for impairment in accordance with ASC Topic 320. Management’s determination of whether these investments are impaired is based on their assessment of the ultimate recoverability of their cost rather than by recognizing temporary declines in value. The determination of whether a decline affects the ultimate recoverability of their cost is influenced by criteria such as (1) the significance of the decline in net assets of the banks as compared to the capital stock amount for the banks and the length of time this situation has persisted, (2) commitments by the banks to make payments required by law or regulation and (3) the impact of legislative and regulatory changes on institutions and, accordingly, on the customer base of the banks. As a government sponsored entity, FHLB has the ability to raise funding through the U.S. Treasury that can be used to support its operations. There is not a public market for FHLB or ACBB stock and the benefits of membership (e.g., liquidity and low cost funding) add value to the stock beyond purely financial measures. Management intends to remain a member of the FHLB and believes that it will be able to fully recover the cost basis of this investment. Management believes no impairment charge is necessary related to the FHLB or ACBB restricted stock as of December 31, 2017 . 
Financial Derivatives	Financial Derivatives – The Corporation may us e interest rate swaps to manage interest rate risk associated with variable-rate funding sources. All such derivatives are recognized on the balance sheet at estimated fair value in other assets or liabilities as appropriate. To the extent the derivatives are effective and meet the requirements for hedge accounting, changes in fair value are recognized in other comprehensive income with income statement reclassification occurring as the hedged item affects earnings. Conversely, changes in fair value attributable to ineffectiveness or to derivatives that do not qualify as hedges are recognized as they occur in the income statement’s interest expense account associated with the hedged item.  Interest rate derivative financial instruments receive hedge accounting treatment only if they are designated as a hedge and are expected to be, and are, effective in substantially reducing interest rate risk arising from the assets and liabilities identified as exposing the Corporation to risk. Those derivative financial instruments that do not meet the hedging criteria discussed below would be classified as trading activities and would be recorded at fair value with changes in fair value recorded in income. Derivative hedge contracts must meet specific effectiveness tests (i.e., over time the change in their fair values due to the designated hedge risk must be within 80 to 125 percent of the opposite change in the fair values of the hedged assets or liabilities). Changes in fair value of the derivative financial instruments must be effective at offsetting changes in the fair value of the hedged items due to the designated hedge risk during the term of the hedge. Further, if the underlying financial instrument differs from the hedged asset or liability, there must be a clear economic relationship between the prices of the two financial instruments. If periodic assessments indicate derivatives no longer provide an effective hedge, the derivatives contracts would be closed out and settled or classified as a trading activity.  Cash flows resulting from the derivative financial instruments that are accounted for as hedges of assets and liabilities are classified in the cash flow statement in the same category as the cash flows of the items being hedged. 
Loans	Loans – Loans, that M anagement has the intent and ability to hold for the foreseeable future or until maturity or payoff, are stated at the outstanding unpaid principal balances, net of any deferred fees. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the yield (interest income) of the related loans using the interest method. The Corporation is am ortizing these amounts over the contractual life of the loan.  The accrual of interest is generally discontinued when the contractual payment of principal or interest has become 90 days past due or M anagement has serious doubts about further collectability of principal or interest, even though the loan is currently performing. A loan may remain on accrual status if it is in the process of collection and is either guaranteed or well secured. When a loan is placed on nonaccrual status, unpaid interest credited to income in the current year is reversed and unpaid interest accrued in a prior year is charged against the allowance for loan losses. Payments received on nonaccrual loans are applied initially against principal, then interest income, late charges and any other expenses and fees . Generally, loans are restored to accrual status when the obligation is brought current, has performed in accordance with the contractual terms for a reasonable period of time and the ultimate collectability of the total contractual principal and interest is no longer in doubt. Consumer loans are typically charged off no later than 180 days past due. Past due status is based on contractual terms of the loans. 
Loans Held For Sale	Loans Held for Sale – Mortgage loans originated and intended for sale in the secondary market at the time of origination are carried at the lower of cost or estimated fair value (determined on an aggregate basis). All sales are made without recourse. Loans held for sale at December 31, 2017 represent loans originated through a third-party brokerage agreement for a fee and present no price risk to the Bank. 
Loan Servicing	Loan Servicing – Servicing assets are recognized as separate assets when rights are acquired through sale of financial assets. A portion of the cost of originating the loan is allocated to the servicing right based on relative fair value. Fair value is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, prepayment speeds, default rates and losses. Capitalized servicing rights are reported in other assets and are amortized into noninterest income in proportion to, and over the periods of, the estimated future net servicing income of the underlying financial assets. Servicing rights are evaluated for impairment based upon the fair value of the rights as compared to amortized cost. For the purpose of computing impairment, mortgage servicing rights are stratified based on risk characteristics of the underlying loans that are expected to have the most impact on projected prepayments including loan type, interest rate and term. Impairment is recognized through a valuation allowance to the extent that fair value is less than the capitalized amount. If the Corporation later determines that all or a portion of the impairment no longer exists, a reduction of the allowance may be recorded as an increase to income. Servicing fee income is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of the outstanding principal or a fixed amount per loan and are recorded as income when earned. The amortization of mortgage servicing rights is netted against loan servicing fee income. Loans serviced by the Bank for the benefit of others totaled $12.6 million, $15.8 million and $21.6 million at December 31, 2017 , 2016 and 2015 , respectively.
Allowance For Loan Losses	Allowance for Loan Losses – The allowance for loan losses is established through provisions for loan losses charged against income. Loans deemed to be uncollectible are charged against the allowance for loan losses, and subsequent recoveries, if any, are credited to the allowance.  The allowance for loan losses is maintained at a level considered adequate to provide for losses that can be reasonably anticipated. Management’s periodic evaluation of the adequacy of the allowance is based on the Bank’s past loan loss experience, known and inherent risks in the portfolio, adverse situations that may affect the borrower’s ability to repay, the estimated value of any underlying collateral, composition of the loan portfolio, current economic conditions, diversification of the loan portfolio, delinquency statistics, results of internal loan reviews, borrowers’ actual or perceived financial and managerial strengths, and other relevant factors. This evaluation is inherently subjective, as it requires material estimates that may be susceptible to significant change, including the amounts and timing of future cash flows expected to be received on impaired loans.  A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by M anagement in determining impairment include payment status, collateral value and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan by loan basis for commercial and commercial real estate loans by one of the following methods: the fair value of the collateral if the loan is collateral dependent , the present value of expected future cash flows discounted at the loan’s effective interest rate or the lo an’s obtainable market price.  The Corporation’s allowance for possible loan losses consists of t hree elements: (1) specific valuation allowances established for probable losses on specific loans , (2) historical valuation allowances calculated based on historical loan loss experience for similar loans with similar characteristics and trends, adjusted, as necessary to reflect the impact general economic conditions and other qualitative risk factors both internal and external to the Corporation and (3) an unallocated component . An unallocated component is maintained to cover uncertainties that could affect Management’s estimate of probable loss. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and general losses in the portfolio.  Large groups of smaller balance homogeneous loans are collectively evaluated for impairment using historical charge-offs as the starting point in estimating loss. Accordingly, the Corporation may not separately identify individual consumer and residential loans for impairment disclosures. 
Premises And Equipment	Premises and Equipment – Premises and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets or the lease term for lease hold improvements, whichever is shorter. When assets are retired or sold, the asset cost and related accumulated depreciation are eliminated from the respective accounts, and any resultant gain or loss is included in net income.  The cost of maintenance and repairs is charged to operating expense as incurred, and the cost of major additions and improvements is capitalized.
Intangible Assets	Intangible Assets – The Bank has $9.0 million of goodwill recorded on its balance sheet as the result of corporate acquisitions. Goodwill is not amortized, nor deductible for tax purposes. However, goodwill is tested for impairment at least annually, as of August 31, in accordance with ASC Topic 350. ASC Topic 350 allows for a qualitative assessment method that requires the use of significant assumptions in order to make a determination of impairment which the Corporation used as of August 31, 2017 . These assumptions may include, but are not limited to: macroeconomic factors, banking industry conditions, banking merger and acquisition trends, the Bank’s historical financial performance, the Corporation’s stock price, forecast Bank financial performance, and change of control premiums. ASC Topic 350 requires the use of the “step-one” test if the qualitative assessment is not used. The step-one test is more quantitative than the qualitative test, but still requires numerous assumptions. The assumptions that may be used in the step-one test may include, but are not limited to: a dividend analysis, comparable sale transactions, and change of control premium estimates. If the step-one test fails, a more comprehensive step-two test is performed before a final determination of impairment is made. If goodwill is determined to be impaired, an impairment write-down is charged to results of operations in the period in which the impairment is determined. 
Bank Owned Life Insurance	Bank Owned Life Insurance – The Bank invests in bank owned life insurance (BOLI) as a source of funding for employee benefit expenses. The Bank purchases life insurance coverage on the lives of a select group of employees. The Bank is the owner and beneficiary of the policies and records the investment at the cash surrender value of the underlying policies. Income from the increase in cash surrender value of the policies is included in noninterest income. 
Other Real Estate Owned (OREO)	Other Real Estate Owned (OREO) – Foreclosed real estate (OREO) is comprised of property acquired through a foreclosure proceeding or an acceptance of a deed in lieu of foreclosure. Balances are initially reflected at the estimated fair value less any estimated disposition costs, with subsequent adjustments made to reflect further declines in value. Any losses realized upon disposition of the property, and holding costs prior thereto, are charged against income. All properties are actively marketed to potential buyers. 
Transfers Of Financial Assets	Transfers of Financial Assets – Transfers of financial assets are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Corporation, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Corporation does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. 
Federal Income Taxes	Federal Income Taxes – Deferred income taxes are provided on the liability method whereby deferred tax assets are recognized for deductible temporary differences and deferred tax liabilities are recognized for taxable temporary differences. Temporary differences are the differences between the reported amounts of assets and liabilities and their tax bases. Deferred tax assets are reduced by a valuation allowance, when in the opinion of M anagement, it is more likely than not that some portion or all deferred tax assets will not be realized. Deferred tax assets and liabilities are adjusted through the provision for income taxes for the effects of changes in tax laws and rates on the date of enactment. ASC Topic 740 prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. Benefits from tax positions should be recognized in the financial statements only when it is more-likely-than-not that the tax position will be sustained upon examination by the appropriate taxing authority that would have full knowledge of all relevant information. A tax position that meets the more-likely-than-not recognition threshold is measured at the largest amount of benefit that is greater than fifty percent likely of being realized upon ultimate settlement. Tax positions that previously failed to meet the more-likely-than-not recognition threshold should be recognized in the first subsequent financial reporting period in which that threshold is met. Previously recognized tax positions that no longer meet the more-likely-than-not recognition threshold should be derecognized in the first subsequent financial reporting period in which that threshold is no longer met. ASC Topic 740, “Income Taxes” also provides guidance on the accounting for and disclosure of unrecognized tax benefits, interest and penalties. 
Advertising Expenses	Advertising Expenses – Advertising costs are expensed as incurred. 
Treasury Stock	Treasury Stock – The acquisition of treasury stock is recorded under the cost method. The subsequent disposition or sale of the treasury stock is recorded using the average cost method. 
Investment And Trust Services	Investment and Trust Services – Assets held in a fiduciary capacity are not assets of the Corporation and therefore are not included in the consolidated financial statements. The fair value of trust assets under management at December 31, 2017 w as $686.9 million and $622.6 million at the prior year-end. We expect that certain r evenue from investment and trust services will be effected by the adoption of ASU 2014,-09 Revenue from Contracts with Customers in 2018. See the section on Recent Accounting Pronouncements. 
Off-Balance Sheet Financial Instruments	Off-Balance Sheet Financial Instruments – In the ordinary course of business, the Bank has entered into off-balance sheet financial instruments consisting of commitments to extend credit and letters of credit. Such financial instruments are recorded on the balance sheet when they are funded. The amount of any liability for the credit risk associated with off-balance sheet financial instruments is recorded in other liabilities and was not material to the financial position of the Corporation at December 31, 201 7 or 201 6 . 
Stock-Based Compensation	Stock-Based Compensation – The Corporation accounts for stock based compensation in accordance with the ASC Topic 718, “Stock Compensation.” ASC Topic 718 requires compensation costs related to share-based payment transactions to be recognized in the financial statements (with limited exceptions). The amount of compensation cost is measured based on the grant-date fair value of the equity or liability instruments issued and forfeitures are accounted for as they occur . Compensation cost is recognized over the period that an employee provides services in exchange for the award. Compensation expense was $161 thousand in 2017 and $88 thousand in 2016 and $74 thousand in 2015 . The Corporation does not allow the employee to use shares to satisfy employer income tax withholding obligations. 
Pension	Pension – The provision for pension expense was actuarially determined using the projected unit credit actuarial cost method. The funding policy is to contribute an amount sufficient to meet the requirements of ERISA, subject to Internal Revenue Code contribution limitations.  In accordance with ASC Topic 715, “ Compensation – Retirement Benefits”, the Corporation recognizes the plan’s over-funded or under-funded status as an asset or liability with an offsetting adjustment to Accumulated Other Comprehensive Income (AOCI). ASC Topic 715 requires the determination of the fair value of a plan’s assets at the company’s year-end and the recognition of actuarial gains and losses, prior service costs or credits, transition assets or obligations as a component of AOCI. These amounts were previously netted against the plan’s funded status in the Corporation’s consolidated Balance Sheet. These amounts will be subsequently recognized as components of net periodic benefit costs. Further, actuarial gains and losses that arise in subsequent periods that are not initially recognized as a component of net periodic benefit costs will be recognized as a component of AOCI. Those amounts will subsequently be recorded as component of net periodic benefit costs as they are amortized during future periods. 
Earnings Per Share	Earnings per share – Earnings per share are computed based on the weighted average number of shares outstanding during each year. The Corporation’s basic earnings per share are calculated as net income divided by the weighted average number of shares outstanding. For diluted earnings per share, net income is divided by the weighted average number of shares outstanding plus the incremental number of shares added as a result of converting common stock equivalents, calculated using the treasury stock method. The Corporation’s common stock equivale nts consist of stock options.  A reconciliation of the weighted average shares outstanding used to calculate basic earnings per share and diluted earnings per share follows:     (Dollars and shares in thousands, except per share data) 2017 2016 2015  Weighted average shares outstanding (basic) 4,337 4,297 4,244  Impact of common stock equivalents 22 5 6  Weighted average shares outstanding (diluted) 4,359 4,302 4,250  Anti-dilutive options excluded from calculation — 9 27  Net income $ 2,176 $ 8,087 $ 10,204  Basic earnings per share $ 0.50 $ 1.88 $ 2.40  Diluted earnings per share $ 0.50 $ 1.88 $ 2.40 
Segment Reporting	Segment Reporting – The Bank acts as an independent community financial services provider and offers traditional banking and related financial services to individual, business and government customers. Through its community office and electronic banking applications , the Bank offers a full array of commercial and retail financial services, including the taking of time, savings and demand deposits; the making of commercial, consumer and mortgage loans; and the providing of safe deposit services. The Bank also performs personal, corporate, pension and fiduciary services through its Investment and Trust Services Department .  Management does not separately allocate expenses, including the cost of funding loan demand, between the commercial, retail, mortgage banking and trust operations of the Bank. As such, discrete information is not available and segment reporting would not be meaningful. 
Comprehensive Income	Comprehensive Income – Comprehensive income is reflected in the Consolidated Statements of Comprehensive Income and includes net income and unrealized gains or losses, net of tax, on investment securities and derivatives and the change in plan assets and benefit obligations on the Bank’s pension plan, net of tax. 
Recent Accounting Pronouncements	Recent Accounting Pronouncements:     Standard Description Effective Date Effect on the financial statements or other significant matters   ASU 2016-09, Stock Compensation (Topic 718): Improvements to Employee Share-based Payment Accounting The standard requires entities to recognize the income tax effects of share-based awards in the income statement when the awards vest or are settled (i.e. the additional paid-in capital pools will be eliminated). The guidance on employers' accounting for an employee's use of shares to satisfy the employer's statutory income tax withholding obligation and for forfeitures is changing. The standard also provides an entity the option to make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest or account for forfeitures when they occur. January 1, 2017 We adopted the standard during the first quarter of 2017. Due to the type of stock compensation plans used by the Corporation, there was no effect on the Corporation's consolidated financial statements.   ASU 2017-09, Premium Amortization on Purchased Callable Debt Securities The standard shortens the amortization period for premiums on purchased callable debt securities to the earliest call date, rather than amortizing over the full contractual term. The standard does change the standard for securities held at a discount. The amendments require companies to reset the effective yield using the payment terms of the debt security if the call option is not exercised on the earliest call date. If the security has additional future called dates, any excess of the amortized cost basis over the amount repayable by the issuer at the next call date should be amortized to the next call date. January 1, 2017 We adopted the standard during the first quarter of 2017, and there was no material effect on the Corporation's consolidated financial statements.   ASU 2018-02, Income Statement (Topic 220), Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income Under ASU 2018-02, entities are allowed, but not required, to reclassify from Accumulated Other Comprehensive Income (AOCI) to retained earnings stranded tax effects resulting from the new federal corporate income tax rate of the Tax Cuts and Jobs Act (the Act). The reclassification could include other stranded tax effects that related to the Act but do not directly related to the change in the federal rate. Tax effects that are stranded in AOCI for other reasons may not be reclassified. Entities also will have an option to adopt the standard retrospectively or in the period of adoption. January 1, 2018 The Corporation adopted the provisions of the ASU in the fourth quarter of 2017. The Company reclassified the disproportionate tax effect resulting from the Act by increasing retained earnings by $992 thousand and reducing AOCI by $992 thousand.   ASU 2016-15, Statements of Cash Flow (Topic 320): Classification of Certain Cash Receipts and Cash Payments The standard clarifies how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The amendments are intended to reduce diversity in practice. The standard contains additional guidance clarifying when an entity should separate cash receipts and cash payments and classifies them into more than one class of cash flows (including when reasonable judgement is required to estimate and allocate cash flows) versus when an entity should classify the aggregate amount into one class of cash flows on the basis of predominance. January 1, 2018 The Corporation determined this guidance will not have an effect on the consolidated financial statements.   ASU 2017-07, Employee Benefits Plan (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost This standard requires an employer to report the service cost component in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period. The other components of net benefit cost are required to be presented in the income statement separately from the service cost component and outside a subtotal of income from operations. The amendments in this update also allow only the service cost component to be eligible for capitalization when applicable. January 1, 2018 These items are currently reported in Salaries and Benefits Expense on the Consolidated Statement of Income. With the adoption of the ASU in January 2018, the service cost will be reported in Salaries and Benefits expense and the nonservice cost will be included in Other Expense on the Consolidated Statement of Income statement and there will be no effect on the Corporation's consolidated financial statements.   ASU 2014-09, Revenue from Contracts with Customers (Topic 606) The amendments in this Update (ASU 2014-09) establish a comprehensive revenue recognition standard. The revenue standard’s core principle is built on the contract between a vendor and a customer for the provision of goods and services. It attempts to depict the exchange of rights and obligations between the parties in the pattern of revenue recognition based on the consideration to which the vendor is entitled. To accomplish this objective, the standard requires five basic steps: (i) identify the contract with the customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract, and (v) recognize revenue when (or as) the entity satisfies a performance obligation. Three basic transition methods are available – full retrospective, retrospective with certain practical expedients, and a cumulative effect approach. January 1, 2018 The majority of our revenue comes from net interest income, and is explicitly out of scope of the guidance. The contracts in noninterest income that are in scope of the guidance are primarily related to service charges and fees on deposit accounts, investment and trust income and other service charges and fees. We are completing the analysis of the contracts in scope and currently do not expect the adoption of the guidance to have a material effect on the Corporation's financial condition and results of operations. In addition, we are evaluating certain revenue streams for principal versus agent treatment of the related revenue (i.e., reporting revenue on a gross basis or net of related expenses). The Corporation adopted this ASU on January 1, 2018 , on a modified retrospective approach.   ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities The standard amends the guidance on the classification and measurement of financial instruments. Some of the amendments include the following: 1) requires equity investments to be measured at fair value with changes in fair value recognized in net income; 2) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment; 3) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; and 4) requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value; among others. January 1, 2018 The adoption of the guidance will not have a material effect on the Corporation's consolidated financial statements. We currently do not have a significant number of Available For Sale equity securities that are subject to the new standard. Additionally we do not have financial liabilities accounted for under the fair value option. The Corporation has not yet determined how to calculate an exit price for the fair value of financial instruments.   ASU 2016-02, Leases (Topic 842) From the lessee’s perspective, the new standard established a right-of-use (ROU) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement for a lessees. From the lessor’s perspective, the new standard requires a lessor to classify leases as either sales-type, finance or operating. A lease will be treated as a sale if it transfers all of the risks and rewards, as well as control of the underlying asset, to the lessee. If risks and rewards are conveyed without the transfer of control, the lease is treated as financing. If the lessor doesn’t convey risks and rewards or control, an operating lease results. January 1, 2019 The Corporation currently has real estate and equipment leases that it classifies as operating leases that are not recognized on the balance sheet. Under the new standard, these leases will move onto the balance sheet in the form of a lease liability (the present value of a lessee's obligation to make lease payments) and a right-of-use asset (an asset that represents the lessee's right to use a specified asset for the lease term). The offsetting transactions will gross-up the Consolidated Balance Sheet, but the Corporation has not yet determined this amount.The Corporation has acquired a lease accounting model to implement the standard. The model has been installed and will be used in a test mode during 2018, but the Corporation does not plan to early adopt the standard. The Corporation currently expects that the new standard will not have a material effect on its consolidated results of operations.   ASU 2017-04, Goodwill (Topic 350) This guidance, among other things, removes step 2 of the goodwill impairment test thus eliminating the need to determine the fair value of individual assets and liabilities of the reporting unit. Upon adoption of this standard, goodwill impairment will be the amount by which a reporting unit's carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. This may result in more or less impairment being recognized than under the current guidance. January 1, 2020 We do not currently expect this guidance to have a material effect on the Corporation's consolidated financial statements based upon the most recent goodwill impairment analysis.   ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments This standard requires credit losses on most financial assets measured at amortized cost and certain other instruments to be measured using an expected credit loss model (referred to as the current expected credit loss (CECL) model). Under this model, entities will estimate credit losses over the entire contractual term of the instrument (considering estimated prepayments, but not expected extensions or modifications unless reasonable expectation of a troubled debt restructuring exists) from the date of initial recognition of that instrument. The ASU replaces the current accounting model for purchased credit impaired loans and debt securities. The allowance for credit losses for purchased financial assets with a more-than insignificant amount of credit deterioration since origination (“PCD assets”), should be determined in a similar manner to other financial assets measured on an amortized cost basis. However, upon initial recognition, the allowance for credit losses is added to the purchase price (“gross up approach”) to determine the initial amortized cost basis. The subsequent account for PCD financial assets is the same expected loss model described above. January 1, 2020 We have formed an implementation team led by the Corporation's Risk Management function. The team is reviewing the requirements of the ASU and evaluating methods and models for implementation. The new standard will result in earlier recognition of additions to the allowance for loan losses and possibly a larger allowance for loan loss balance with a corresponding increase in the provision for loan losses in results of operations; however, the Corporation is continuing to evaluate the impact of the pending adoption of the new standard on its consolidated financial statements. The Corporation expects to have its methodology and process complete by the end of 2018 so that it can run the new CECL model during 2019 in test mode, prior to the 2020 implementation. 

Summary Of Significant Accoun31

Summary Of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Summary Of Significant Accounting Policies [Abstract]
Schedule Of Earnings Per Share, Basic And Diluted	   (Dollars and shares in thousands, except per share data) 2017 2016 2015  Weighted average shares outstanding (basic) 4,337 4,297 4,244  Impact of common stock equivalents 22 5 6  Weighted average shares outstanding (diluted) 4,359 4,302 4,250  Anti-dilutive options excluded from calculation — 9 27  Net income $ 2,176 $ 8,087 $ 10,204  Basic earnings per share $ 0.50 $ 1.88 $ 2.40  Diluted earnings per share $ 0.50 $ 1.88 $ 2.40 

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2017
Regulatory Matters [Abstract]
Schedule Of The Total Risk-based, Tier 1 Risk-based And Tier 1 Leverage Requirements	    As of December 31, 2017  Regulatory Ratios  Adequately Capitalized Well Capitalized  Actual Minimum Minimum  (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio  Common Equity Tier 1 Risk-based Capital Ratio (1)  Corporation $ 112,315 14.06% $ 35,953 4.50% N/A N/A  Bank 111,496 13.93% 36,010 4.50% $ 52,014 6.50%   Tier 1 Risk-based Capital Ratio (2)  Corporation $ 112,315 14.06% $ 47,938 6.00% N/A N/A  Bank 111,496 13.93% 48,013 6.00% $ 64,018 8.00%   Total Risk-based Capital Ratio (3)  Corporation $ 122,324 15.31% $ 63,917 8.00% N/A N/A  Bank 121,521 15.19% 64,018 8.00% $ 80,022 10.00%   Tier 1 Leverage Ratio (4)  Corporation $ 112,315 9.73% $ 46,175 4.00% N/A N/A  Bank 111,496 9.64% 46,242 4.00% $ 57,802 5.00%    As of December 31, 2016  Regulatory Ratios  Adequately Capitalized Well Capitalized  Actual Minimum Minimum  (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio  Common Equity Tier 1 Risk-based Capital Ratio (1)  Corporation $ 111,691 14.41% $ 34,889 4.50% N/A N/A  Bank 110,932 14.29% 34,943 4.50% $ 50,473 6.50%   Tier 1 Risk-based Capital Ratio (2)  Corporation $ 111,691 14.41% $ 46,518 6.00% N/A N/A  Bank 110,932 14.29% 46,590 6.00% $ 62,121 8.00%   Total Risk-based Capital Ratio (3)  Corporation $ 121,456 15.67% $ 62,024 8.00% N/A N/A  Bank 120,712 15.55% 62,121 8.00% $ 77,651 10.00%   Tier 1 Leverage Ratio (4)  Corporation $ 111,691 10.11% $ 44,209 4.00% N/A N/A  Bank 110,932 10.02% 44,270 4.00% $ 55,337 5.00%  (1) Common equity Tier 1 capital / total risk-weighted assets , (2) Tier 1 capital / total risk-weighted assets , (3) Total risk-based capital / total risk-weighted assets , (4) Tier 1 capital / average quarterly assets

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2017
Investments [Abstract]
Unrealized Gain (Loss) On Investments	   (Dollars in thousands) Gross Gross  Amortized unrealized unrealized Fair  December 31, 2017 cost gains losses value  Equity securities $ 164 $ 201 $ — $ 365  U.S. Government and Agency securities 11,451 64 (43) 11,472  Municipal securities 57,374 650 (252) 57,772  Trust preferred securities 6,000 — (183) 5,817  Agency mortgage-backed securities 51,307 197 (567) 50,937  Private-label mortgage-backed securities 858 88 — 946  Asset-backed securities 28 — (1) 27  Total $ 127,182 $ 1,200 $ (1,046) $ 127,336      (Dollars in thousands) Gross Gross  Amortized unrealized unrealized Fair  December 31, 2016 cost gains losses value  Equity securities $ 164 $ 126 $ — $ 290  U.S. Government and Agency securities 12,598 148 (26) 12,720  Municipal securities 62,763 793 (571) 62,985  Trust preferred securities 5,979 — (518) 5,461  Agency mortgage-backed securities 61,305 431 (452) 61,284  Private-label mortgage-backed securities 1,053 56 (5) 1,104  Asset-backed securities 33 — (2) 31  Total $ 143,895 $ 1,554 $ (1,574) $ 143,875 
Amortized Cost And Fair Value Of Debt Securities, By Contractual Maturity	   (Dollars in thousands) Amortized cost Fair value  Due in one year or less $ 19 $ 19  Due after one year through five years 13,784 13,920  Due after five years through ten years 33,748 33,770  Due after ten years 27,302 27,379  74,853 75,088  Mortgage-backed securities 52,165 51,883  Total $ 127,018 $ 126,971 
Composition Of Net Realized Securities Gains	  (Dollars in thousands) 2017 2016 2015  Gross gains realized (including gain on conversion) $ 3 $ 22 $ 736  Gross losses realized — — —  Net gains realized $ 3 $ 22 $ 736 
Schedule Of Unrealized Loss On Investments	   December 31, 2017  Less than 12 months 12 months or more Total  Fair Unrealized Fair Unrealized Fair Unrealized  (Dollars in thousands) Value Losses Count Value Losses Count Value Losses Count   U.S. Government and Agency securities $ 2,315 $ (11) 5 $ 3,528 $ (32) 10 $ 5,843 $ (43) 15  Municipal securities 13,767 (89) 22 7,507 (163) 14 21,274 (252) 36  Trust preferred securities 1,216 (12) 2 4,601 (171) 5 5,817 (183) 7  Agency mortgage-backed securities 16,287 (129) 29 20,563 (438) 39 36,850 (567) 68  Private-label mortgage-backed securities — — — — — — — — —  Asset-backed securities — — — 4 (1) 1 4 (1) 1  Total temporarily impaired securities $ 33,585 $ (241) 58 $ 36,203 $ (805) 69 $ 69,788 $ (1,046) 127      December 31, 2016  Less than 12 months 12 months or more Total  Fair Unrealized Fair Unrealized Fair Unrealized  (Dollars in thousands) Value Losses Count Value Losses Count Value Losses Count   U.S. Government and Agency securities $ 789 $ (9) 1 $ 3,413 $ (17) 10 $ 4,202 $ (26) 11  Municipal securities 23,407 (417) 43 1,598 (154) 2 25,005 (571) 45  Trust preferred securities — — — 5,461 (518) 7 5,461 (518) 7  Agency mortgage-backed securities 26,995 (359) 39 4,656 (93) 11 31,651 (452) 50  Private-label mortgage-backed securities 281 (5) 1 — — — 281 (5) 1  Asset-backed securities — — — 4 (2) 1 4 (2) 1  Total temporarily impaired securities $ 51,472 $ (790) 84 $ 15,132 $ (784) 31 $ 66,604 $ (1,574) 115 
Other Than Temporary Impairment, Credit Losses Recognized In Earnings	   (Dollars in thousands) Twelve Months Ended  2017 2016  Balance of cumulative credit-related OTTI at January 1 $ 595 $ 555  Additions for credit-related OTTI not previously recognized — 40  Additional increases for credit-related OTTI previously recognized when there is  no intent to sell and no requirement to sell before recovery of amortized cost basis — —  Decreases for previously recognized credit-related OTTI because there was an intent to sell — —  Reduction for increases in cash flows expected to be collected — —  Balance of credit-related OTTI at December 31 $ 595 $ 595 

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2017
Loans [Abstract]
Schedule Of Loans Outstanding	    (Dollars in thousands) 2017 2016  Residential Real Estate 1-4 Family  Consumer first liens $ 97,159 $ 103,125  Commercial first lien 61,275 65,445  Total first liens 158,434 168,570   Consumer junior liens and lines of credit 45,043 44,817  Commercial junior liens and lines of credit 5,328 5,396  Total junior liens and lines of credit 50,371 50,213  Total residential real estate 1-4 family 208,805 218,783   Residential real estate - construction  Consumer 1,813 1,350  Commercial 8,088 7,625  Total residential real estate construction 9,901 8,975   Commercial real estate 428,428 390,584  Commercial 291,519 270,826  Total commercial 719,947 661,410   Consumer 5,047 4,705  943,700 893,873  Less: Allowance for loan losses (11,792) (11,075)  Net Loans $ 931,908 $ 882,798   Included in the loan balances are the following:  Net unamortized deferred loan costs $ 98 $ 242   Loans pledged as collateral for borrowings and commitments from:  FHLB $ 737,313 $ 711,682  Federal Reserve Bank 35,740 41,152  Total $ 773,053 $ 752,834 
Schedule Of Loans To Related Parties	  (Dollars in thousands) 2017 2016  Balance at beginning of year $ 23,243 $ 18,954  New loans made 1,513 6,400  Repayments (2,633) (2,111)  Balance at end of year $ 22,123 $ 23,243 

Loan Quality (Tables)

Loan Quality (Tables)	12 Months Ended
	Dec. 31, 2017
Loan Quality [Abstract]
Internal Credit Rating For The Loan Portfolio	   Pass Special Mention Substandard Doubtful  (Dollars in thousands) (1-5) (6) (7) (8) Total  December 31, 2017  Residential Real Estate 1-4 Family  First liens $ 157,395 $ — $ 1,039 $ — $ 158,434  Junior liens and lines of credit 50,371 — — — 50,371  Total 207,766 — 1,039 — 208,805  Residential real estate - construction 8,893 — 1,008 — 9,901  Commercial real estate 419,277 680 8,471 — 428,428  Commercial 289,916 — 1,603 — 291,519  Consumer 5,047 — — — 5,047  Total $ 930,899 $ 680 $ 12,121 $ — $ 943,700      December 31, 2016  Residential Real Estate 1-4 Family  First liens $ 167,199 $ 227 $ 1,144 $ — $ 168,570  Junior liens and lines of credit 50,017 28 168 — 50,213  Total 217,216 255 1,312 — 218,783  Residential real estate - construction 8,220 — 755 — 8,975  Commercial real estate 377,283 — 13,301 — 390,584  Commercial 267,901 957 1,968 — 270,826  Consumer 4,705 — — — 4,705  Total $ 875,325 $ 1,212 $ 17,336 $ — $ 893,873 
Aging Of Payments Of The Loan Portfolio	   (Dollars in thousands) Loans Past Due and Still Accruing Total  Current 30-59 Days 60-89 Days 90 Days+ Total Non-Accrual Loans  December 31, 2017  Residential Real Estate 1-4 Family  First liens $ 157,247 $ 485 $ 534 $ — $ 1,019 $ 168 $ 158,434  Junior liens and lines of credit 50,202 139 30 — 169 — 50,371  Total 207,449 624 564 — 1,188 168 208,805  Residential real estate - construction 9,435 — — — — 466 9,901  Commercial real estate 425,806 421 347 — 768 1,854 428,428  Commercial 291,221 111 — — 111 187 291,519  Consumer 5,017 23 7 — 30 — 5,047  Total $ 938,928 $ 1,179 $ 918 $ — $ 2,097 $ 2,675 $ 943,700       December 31, 2016  Residential Real Estate 1-4 Family  First liens $ 166,689 $ 1,236 $ 414 $ — $ 1,650 $ 231 $ 168,570  Junior liens and lines of credit 50,031 96 — — 96 86 50,213  Total 216,720 1,332 414 — 1,746 317 218,783  Residential real estate - construction 8,495 — — — — 480 8,975  Commercial real estate 384,658 858 447 665 1,970 3,956 390,584  Commercial 270,478 250 75 — 325 23 270,826  Consumer 4,672 30 3 — 33 — 4,705  Total $ 885,023 $ 2,470 $ 939 $ 665 $ 4,074 $ 4,776 $ 893,873 
Impaired Financing Receivables	   Impaired Loans  With No Allowance With Allowance  (Dollars in thousands) Unpaid Unpaid  Recorded Principal Recorded Principal Related  December 31, 2017 Investment Balance Investment Balance Allowance  Residential Real Estate 1-4 Family  First liens $ 869 $ 950 $ — $ — $ —  Junior liens and lines of credit — — — — —  Total 869 950 — — —  Residential real estate - construction 466 531 — — —  Commercial real estate 11,061 11,541 — — —  Commercial 187 201 — — —  Total $ 12,583 $ 13,223 $ — $ — $ —      December 31, 2016  Residential Real Estate 1-4 Family  First liens $ 956 $ 1,030 $ — $ — $ —  Junior liens and lines of credit 85 93 — — —  Total 1,041 1,123 — — —  Residential real estate - construction 480 535 — — —  Commercial real estate 13,523 14,133 — —  Commercial 23 35 — — —  Total $ 15,067 $ 15,826 $ — $ — $ —      Twelve Months Ended  December 31, 2017 December 31, 2016 December 31, 2015  Average Interest Average Interest Average Interest  (Dollars in thousands) Recorded Income Recorded Income Recorded Income  Investment Recognized Investment Recognized Investment Recognized  Residential Real Estate 1-4 Family  First liens $ 1,083 $ 39 $ 1,194 $ 38 $ 1,531 $ 13  Junior liens and lines of credit 64 — 93 1 105 —  Total 1,147 39 1,287 39 1,636 13  Residential real estate - construction 473 — 492 4 505 —  Commercial real estate 11,938 435 17,806 589 14,509 122  Commercial 245 — 32 — 278 —  Total $ 13,803 $ 474 $ 19,617 $ 632 $ 16,928 $ 135 
Troubled Debt Restructuring Loans	  Troubled Debt Restructurings  That Have Defaulted on  Modified Terms in the  (Dollars in thousands) Troubled Debt Restructurings Last Twelve Months  Number of Recorded Number of Recorded  Contracts Investment Performing* Nonperforming* Contracts Investment  December 31, 2017  Residential real estate - construction 1 $ 466 $ 466 $ — — $ —  Residential real estate 5 737 701 36 1 39  Commercial real estate 11 10,983 10,388 595 1 595  Total 17 $ 12,186 $ 11,555 $ 631 2 $ 634      December 31, 2016  Residential real estate - construction 1 $ 480 $ 480 $ — — $ —  Residential real estate 5 875 724 151 1 151  Commercial real estate 11 12,064 10,814 1,250 1 1,250  Total 17 $ 13,419 $ 12,018 $ 1,401 2 $ 1,401  * The performing status is determined by the loan ’ s compliance with the modified terms.  There were no new TDR loans made during the year ended December 31, 2017.  The following table reports new TDR loans made during 2016, concession granted and the recorded investment as of December 31, 2016:     New During Period  Twelve Months Ended Number of Pre-TDR After-TDR Recorded  December 31, 2016 Contracts Modification Modification Investment Concession  Commercial real estate 1 $ 525 $ 525 $ 513 multiple  Residential real estate 1 238 238 237 maturity  Total 2 $ 763 $ 763 $ 750 
Allowance For Loan Losses, By Loan Segment	The following table shows, by loan class, the activity in the Allowance for Loan Loss ( ALL ) , for the years ended December 31, 2017 , 2016 and 2015:      Residential Real Estate 1-4 Family  First Junior Liens & Commercial  (Dollars in thousands) Liens Lines of Credit Construction Real Estate Commercial Consumer Unallocated Total   ALL at December 31, 2014 $ 994 $ 271 $ 214 $ 4,978 $ 1,515 $ 127 $ 1,012 $ 9,111  Charge-offs (43) (39) (21) — (270) (198) — (571)  Recoveries 7 — 18 14 148 74 — 261  Provision 31 76 (17) 657 126 99 313 1,285  ALL at December 31, 2015 $ 989 $ 308 $ 194 $ 5,649 $ 1,519 $ 102 $ 1,325 $ 10,086   ALL at December 31, 2015 $ 989 $ 308 $ 194 $ 5,649 $ 1,519 $ 102 $ 1,325 $ 10,086  Charge-offs (49) — (41) (2,751) (74) (167) — (3,082)  Recoveries 35 — — 19 167 75 — 296  Provision 130 15 71 3,192 281 90 (4) 3,775  ALL at December 31, 2016 $ 1,105 $ 323 $ 224 $ 6,109 $ 1,893 $ 100 $ 1,321 $ 11,075   ALL at December 31, 2016 $ 1,105 $ 323 $ 224 $ 6,109 $ 1,893 $ 100 $ 1,321 $ 11,075  Charge-offs (13) — — (14) (8) (102) — (137)  Recoveries 2 11 — 17 117 37 — 184  Provision (34) (4) — 414 108 70 116 670  ALL at December 31, 2017 $ 1,060 $ 330 $ 224 $ 6,526 $ 2,110 $ 105 $ 1,437 $ 11,792  The following table shows, by loan class, the loans that were evaluated for the Allowance for Loan Loss ( ALL ) under a specific reserve (individually) and those that were evaluated under a general reserve (collectively), and the amount of the allowance established in each category as of December 31, 2017 and 2016:      Residential Real Estate 1-4 Family  First Junior Liens & Commercial  (Dollars in thousands) Liens Lines of Credit Construction Real Estate Commercial Consumer Unallocated Total   December 31, 2017  Loans evaluated for ALL:  Individually $ 459 $ — $ 466 $ 10,981 $ — $ — $ — $ 11,906  Collectively 157,975 50,371 9,435 417,447 291,519 5,047 — 931,794  Total $ 158,434 $ 50,371 $ 9,901 $ 428,428 $ 291,519 $ 5,047 $ — $ 943,700   ALL established for loans evaluated:  Individually $ — $ — $ — $ — $ — $ — $ — $ —  Collectively 1,060 330 224 6,526 2,110 105 1,437 11,792  ALL at December 31, 2017 $ 1,060 $ 330 $ 224 $ 6,526 $ 2,110 $ 105 $ 1,437 $ 11,792   December 31, 2016  Loans evaluated for ALL:  Individually $ 628 $ 52 $ 480 $ 13,523 $ — $ — $ — $ 14,683  Collectively 167,942 50,161 8,495 377,061 270,826 4,705 — 879,190  Total $ 168,570 $ 50,213 $ 8,975 $ 390,584 $ 270,826 $ 4,705 $ — $ 893,873   ALL established for loans evaluated:  Individually $ — $ — $ — $ — $ — $ — $ — $ —  Collectively 1,105 323 224 6,109 1,893 100 1,321 11,075  ALL at December 31, 2016 $ 1,105 $ 323 $ 224 $ 6,109 $ 1,893 $ 100 $ 1,321 $ 11,075 

Premises And Equipment (Tables)

Premises And Equipment (Tables)	12 Months Ended
	Dec. 31, 2017
Premises And Equipment [Abstract]
Premises And Equipment	  (Dollars in thousands) Estimated Life 2017 2016  Land $ 2,962 $ 3,000  Buildings and leasehold improvements 15 - 30 years, or lease term 24,347 24,190  Furniture, fixtures and equipment 3 - 10 years 12,447 11,902  Total cost 39,756 39,092  Less: Accumulated depreciation (26,015) (25,034)  Net premises and equipment $ 13,741 $ 14,058 
Schedule Of Depreciation And Rent Expense	  2017 2016 2015  Depreciation expense $ 1,236 $ 1,270 $ 1,269  Rent expense on leases $ 704 $ 713 $ 735 
Operating Leases Of Lessee Disclosure	  (Dollars in thousands)  2018 $ 634  2019 523  2020 490  2021 485  2022 482  2023 and beyond 3,628  Total $ 6,242 

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	12 Months Ended
	Dec. 31, 2017
Other Real Estate Owned [Abstract]
Summary Of Changes In Other Real Estate Owned	   (Dollars in thousands) 2017 2016 2015  Balance at beginning of the period $ 4,915 $ 6,451 $ 3,666  Additions 90 329 3,626  Proceeds from dispositions (2,298) (625) (508)  (Loss) gain on sales, net (26) (31) 32  Valuation adjustment (83) (1,209) (365)  Balance at the end of the period $ 2,598 $ 4,915 $ 6,451 

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2017
Deposits [Abstract]
Schedule Of Deposits	  (Dollars in thousands) 2017 2016  Noninterest-bearing checking $ 196,853 $ 170,345   Interest-bearing checking 280,944 241,906  Money management 415,045 420,309  Savings 78,868 74,925  Total interest-bearing checking and savings 774,857 737,140   Retail time deposits 72,211 71,264  Brokered time deposits 3,260 3,371  Total time deposits 75,471 74,635  Total deposits $ 1,047,181 $ 982,120   Overdrawn deposit accounts reclassified as loans $ 154 $ 181 
Maturity of Time Deposits Of $250,000 Or More	  (Dollars in thousands)  Maturity distribution:  Within three months $ 9,964  Over three through six months 628  Over six through twelve months 755  Over twelve months 672  Total $ 12,019  
Maturities Of Time Deposits	  Retail Brokered Total  (Dollars in thousands) Time Deposits Time Deposits Time Deposits  2018 $ 46,338 $ 3,008 $ 49,346  2019 10,451 252 10,703  2020 7,414 — 7,414  2021 3,680 — 3,680  2022 4,328 — 4,328  Total $ 72,211 $ 3,260 $ 75,471 

Other Borrowings (Tables)

Other Borrowings (Tables)	12 Months Ended
	Dec. 31, 2017
Other Borrowings [Abstract]
Short Term Borrowings	   2017 2016  FHLB FHLB  (Dollars in thousands) Open Repo Open Repo  Ending balance $ — $ 24,270  Weighted average rate at year end — 0.74%  Range of interest rates paid at year end — 0.74%  Maximum month-end balance during the year $ 13,000 $ 24,270  Average balance during the year $ 1,894 $ 5,258  Weighted average interest rate during the year 0.83% 0.63% 

Federal Income Taxes (Tables)

Federal Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Federal Income Taxes [Abstract]
Schedule Of Deferred Tax Assets And Liabilities	  (Dollars in thousands)  Deferred Tax Assets 2017 2016  Allowance for loan losses $ 2,476 $ 3,766  Deferred compensation 676 986  Purchase accounting 16 23  Deferred loan fees and costs, net 99 160  Capital loss carryover 173 280  Other than temporary impairment of investments 124 260  Accumulated other comprehensive loss 1,603 2,171  Depreciation — 45  Other 2,191 561  7,358 8,252  Valuation allowance (297) (467)  Total gross deferred tax assets 7,061 7,785   Deferred Tax Liabilities  Depreciation 162 —  Joint ventures and partnerships 28 36  Pension 1,068 1,886  Mortgage servicing rights — 19  Total gross deferred tax liabilities 1,258 1,941  Net deferred tax asset $ 5,803 $ 5,844 
Schedule Of Components Of Income Tax Expense (Benefit)	  For the Years Ended December 31  (Dollars in thousands) 2017 2016 2015  Current tax expense $ 4,396 $ 2,134 $ 2,382  Deferred tax expense (benefit) (831) (832) (111)  Income tax provision $ 3,565 $ 1,302 $ 2,271 
Schedule Of Effective Income Tax Rate Reconciliation	  For the Years Ended December 31  (Dollars in thousands) 2017 2016 2015  Tax provision at statutory rate ( 34% ) $ 3,252 $ 3,192 $ 4,241  Income on tax-exempt loans and securities (2,056) (1,751) (1,566)  Nondeductible interest expense relating to carrying tax-exempt obligations 32 24 22  Revaluation of deferred tax assets 2,291 — —  Dividends received exclusion — — (2)  Income from bank owned life insurance (171) (210) (182)  Life insurance proceeds — — (35)  Change in valuation allowance — — (200)  Stock option compensation 55 30 25  Other, net 162 17 (32)  Income tax provision $ 3,565 $ 1,302 $ 2,271   Effective income tax rate 62.1% 13.9% 18.2% 

Accumulated Other Comprehensi41

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2017
Accumulated Other Comprehensive Loss [Abstract]
Schedule Of Accumulated Other Comprehensive Loss	    (Dollars in thousands) 2017 2016  Net unrealized gains (losses) on securities $ 154 $ (20)  Tax effect (33) 7  Net of tax amount 121 (13)   Accumulated pension adjustment (7,784) (6,366)  Tax effect 1,635 2,164  Net of tax amount (6,149) (4,202)   Total accumulated other comprehensive loss $ (6,028) $ (4,215) 

Benefit Plans (Tables)

Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2017
Benefit Plans [Abstract]
Schedule Of Plan's Funded Status	  For the Years Ended December 31  (Dollars in thousands) 2017 2016 2015  Change in projected benefit obligation  Benefit obligation at beginning of measurement year $ 17,881 $ 18,609 $ 19,679  Service cost 317 337 377  Interest cost 667 701 695  Actuarial loss (gain) 2,260 632 (906)  Settlement loss — (1,590) —  Benefits paid (1,236) (808) (1,236)  Benefit obligation at end of measurement year 19,889 17,881 18,609   Change in plan assets  Fair value of plan assets at beginning of measurement year 17,062 18,301 19,677  Actual return on plan assets net of expenses 1,366 1,159 (140)  Settlement loss — (1,590) —  Employer contribution — — —  Benefits paid (1,236) (808) (1,236)  Fair value of plan assets at end of measurement year 17,192 17,062 18,301   Funded status of projected benefit obligation $ (2,697) $ (819) $ (308) 
Schedule Of Amounts Recognized In Other Comprehensive Income (Loss)	  Amounts recognized in accumulated other comprehensive For the Years Ended December 31  income (loss), net of tax 2017 2016 2015  Net actuarial loss $ (7,784) $ (6,366) $ (6,871)  Prior service cost obligation — — 94  (7,784) (6,366) (6,777)  Tax effect 1,635 2,164 2,304  Net amount recognized in accumulated other comprehensive loss $ (6,149) $ (4,202) $ (4,473) 
Schedule Of Net Benefit Costs	  For the Years Ended December 31  Components of net periodic pension cost 2017 2016 2015  Service cost $ 317 $ 337 $ 377  Interest cost 667 701 695  Expected return on plan assets (1,072) (1,165) (1,182)  Amortization of prior service cost — (94) (126)  Recognized net actuarial loss 547 579 623  Net periodic pension cost 459 358 387  Effect of settlement loss — 564 —  Total pension expense $ 459 $ 922 $ 387 
Schedule Of Assumptions Used	  For the Years Ended December 31  2017 2016 2015  Assumptions used to determine benefit obligations:  Discount rate 3.46% 3.89% 4.06%  Rate of compensation increase 4.00% 4.00% 4.00%   Assumptions used to determine net periodic benefit cost:  Discount rate 3.89% 3.89% 3.72%  Expected long-term return on plan assets 6.50% 6.50% 6.50%  Rate of compensation increase 4.00% 4.00% 4.00%   Asset allocations:  Cash and cash equivalents 2% 4% 8%  Common stocks 24% 33% 31%  Corporate bonds 18% 8% 7%  Municipal bonds 38% 42% 43%  Investment fund - debt 9% 9% 8%  Insurance contracts 4% 3% 2%  Other 5% 1% 1%  Total 100% 100% 100%   Shares of the Corporation's common stock held in the plan  Value of shares (in thousands) $ — $ — $ 68  Percent of total plan assets 0.0% 0.0% 0.4% 
Schedule Of Amounts Recognized In Balance Sheet	     (Dollars in Thousands) December 31, 2017  Asset Description Fair Value Level 1 Level 2 Level 3  Cash and cash equivalents $ 399 $ 399 $ — $ —  Common stocks 4,158 4,158 — —  Corporate bonds 3,108 — 3,108 —  Municipal bonds 6,556 — 6,556 —  Investment fund - debt 1,570 1,570 — —  Cash value of life insurance 25 — — 25  Deposit in immediate participation guarantee contract 683 683 — —  Other 693 143 550 —  Total assets $ 17,192 $ 6,953 $ 10,214 $ 25     (Dollars in Thousands) December 31, 2016  Asset Description Fair Value Level 1 Level 2 Level 3  Cash and cash equivalents $ 726 $ 726 $ — $ —  Common stocks 5,688 5,688 — —  Corporate bonds 1,310 — 1,310 —  Municipal bonds 7,146 — 7,146 —  Investment fund - debt 1,454 1,454 — —  Cash value of life insurance 25 — — 25  Deposit in immediate participation guarantee contract 479 479 —  Other 234 234 — —  Total assets $ 17,062 $ 8,581 $ 8,456 $ 25 
Schedule Of Changes In Fair Value Of Plan Assets	  Cash Value of Life Insurance  December 31  2017 2016  Balance at the beginning of the period $ 25 $ 62  Unrealized gain (loss) relating to investments held at the reporting date — 1  Purchases, sales, issuances and settlement, net — (38)  Balance at the end of the period $ 25 $ 25 
Schedule Of Expected Benefit Payments	  2018 $ 1,043  2019 1,064  2020 1,483  2021 969  2022 1,209  2023-2027 6,580  Total $ 12,348 

Stock Purchase Plans (Tables)

Stock Purchase Plans (Tables)	12 Months Ended
	Dec. 31, 2017
Stock Purchase Plans [Abstract]
Schedule Of Share-based Compensation, Stock Options, Activity	   (Dollars in thousands except share and per share data)  ESPP Weighted Average Aggregate  Options Price Per Share Intrinsic Value  Balance Outstanding at December 31, 2014 25,970 $ 18.91  Granted 23,379 23.42  Exercised (4,794) 19.17  Expired (22,269) 19.08  Balance Outstanding at December 31, 2015 22,286 $ 23.42 $ 2  Granted 24,434 22.46  Exercised (907) 22.66  Expired (23,055) 23.38  Balance Outstanding at December 31, 2016 22,758 $ 22.46 $ 140  Granted 19,086 29.95  Exercised (6,827) 23.00  Expired (17,180) 22.79  Balance Outstanding at December 31, 2017 17,837 $ 29.95 $ 132   Shares available for future grants at December 31, 2017 200,082     ISOP Weighted Average Aggregate  Options Price Per Share Intrinsic Value  Balance Outstanding at December 31, 2014 44,075 $ 23.29  Granted 17,500 22.00  Exercised — —  Forfeited (8,500) 25.29  Balance Outstanding at December 31, 2015 53,075 $ 22.56 $ 50  Granted 24,450 21.27  Exercised (3,800) 16.00  Forfeited (15,000) 24.14  Balance Outstanding at December 31, 2016 58,725 $ 22.03 $ 386  Granted 33,450 30.00  Exercised (750) 23.77  Forfeited (6,200) 27.37  Balance Outstanding at December 31, 2017 85,225 $ 24.75 $ 1,075   Shares available for future grants at December 31, 2017 290,177 
Share-based Compensation Arrangement By Share-based Payment Award, Options, Vested And Expected To Vest, Outstanding And Exercisable	  Options Weighted  Outstanding Exercise Price or Weighted Average Average Remaining  Stock Option Plan and Exercisable Price Range Exercise Price Life (years)  Employee Stock Purchase Plan 17,837 $ 29.95 $ 29.95 0.5   Incentive Stock Option Plan 5,500 16.11 16.11 1.2  Incentive Stock Option Plan 37,350 21.27 - 22.05 21.56 7.8  Incentive Stock Option Plan 8,925 23.77 23.77 0.1  Incentive Stock Option Plan 33,450 30.00 30.00 9.2  ISOP Total/Average 85,225 $ 24.75 7.1 
Valuation Assumptions Using Black-Scholes Method	  2017 2016 2015  Incentive Stock Option Plan  Options granted 33,450 24,450 17,500  Risk-free interest rate 1.87% 1.22% 1.47%  Expected volatility of the Corporation's stock 23.12% 25.76% 28.64%  Expected dividend yield 2.94% 3.23% 3.09%  Expected life (in years) 5.25 5.25 5.25  Weighted average fair value of options granted $ 4.81 $ 3.58 $ 4.22   (Dollars in thousands)  Compensation expense included in net income  ESPP $ — $ — $ —  ISOP 161 88 74  Total compensation expense included in net income $ 161 $ 88 $ 74 

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2017
Shareholders' Equity [Abstract]
Schedule Of Stock Repurchase Activity	  Shares Repurchased  Plan Date Authorized Expiration 2017 2016  4/18/2016 $350,000 in shares per calendar quarter 3/31/2017 - 34,048  10/12/2017 100,000 shares 9/30/2018 - N/A 

Commitments And Contingencies (

Commitments And Contingencies (Tables)	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies [Abstract]
Outstanding Commitments	  (Dollars in thousands) 2017 2016  Financial instruments whose contract amounts represent credit risk  Commercial commitments to extend credit $ 249,526 $ 227,380  Consumer commitments to extend credit (secured) 44,866 44,352  Consumer commitments to extend credit (unsecured) 5,668 5,674  $ 300,060 $ 277,406  Standby letters of credit $ 28,630 $ 23,935 

Fair Value Measurements And F46

Fair Value Measurements And Fair Values Of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2017
Fair Value Measurements And Fair Values Of Financial Instruments [Abstract]
Fair Value, By Balance Sheet Grouping	   December 31, 2017  Carrying Fair  (Dollars in thousands) Amount Value Level 1 Level 2 Level 3  Financial assets:  Cash and cash equivalents $ 58,603 $ 58,603 $ 58,603 $ — $ —  Investment securities available for sale 127,336 127,336 365 126,971 —  Restricted stock 456 456 — 456 —  Loans held for sale 442 442 — 442 —  Net loans 931,908 929,891 — — 929,891  Accrued interest receivable 3,847 3,847 — 3,847 —   Financial liabilities:  Deposits $ 1,047,181 $ 1,046,476 $ — $ 1,046,476 $ —  Accrued interest payable 149 149 — 149 —   December 31, 2016  Carrying Fair  (Dollars in thousands) Amount Value Level 1 Level 2 Level 3  Financial assets:  Cash and cash equivalents $ 36,665 $ 36,665 $ 36,665 $ — $ —  Investment securities available for sale 143,875 143,875 290 143,585 —  Restricted stock 1,767 1,767 — 1,767 —  Loans held for sale 540 540 — 540 —  Net loans 882,798 889,910 — — 889,910  Accrued interest receivable 3,592 3,592 — 3,592 —   Financial liabilities:  Deposits $ 982,120 $ 981,949 $ — $ 981,949 $ —  Short-term debt 24,270 24,270 24,270 — —  Accrued interest payable 116 116 — 116 —  
Schedule Of Fair Value, Assets And Liabilities Measured On Recurring Basis	     (Dollars in Thousands Fair Value at December 31, 2017  Asset Description Level 1 Level 2 Level 3 Total  Equity securities $ 365 $ — $ — $ 365  U.S. Government and Agency securities — 11,472 — 11,472  Municipal securities — 57,772 — 57,772  Trust Preferred Securities — 5,817 — 5,817  Agency mortgage-backed securities — 50,937 — 50,937  Private-label mortgage-backed securities — 946 — 946  Asset-backed securities — 27 — 27  Total assets $ 365 $ 126,971 $ — $ 127,336      (Dollars in Thousands) Fair Value at December 31, 2016  Asset Description Level 1 Level 2 Level 3 Total  Equity securities $ 290 $ — $ — $ 290  U.S. Government and Agency securities — 12,720 — 12,720  Municipal securities — 62,985 — 62,985  Trust Preferred Securities — 5,461 — 5,461  Agency mortgage-backed securities — 61,284 — 61,284  Private-label mortgage-backed securities — 1,104 — 1,104  Asset-backed securities — 31 — 31  Total assets $ 290 $ 143,585 $ — $ 143,875 
Schedule Of Fair Value On A Nonrecurring Basis	   (Dollars in Thousands) Fair Value at December 31, 2017  Asset Description Level 1 Level 2 Level 3 Total  Other real estate owned (1) $ — $ — $ 90 $ 90  Total assets $ — $ — $ 90 $ 90      (Dollars in Thousands) Fair Value at December 31, 2016  Asset Description Level 1 Level 2 Level 3 Total  Premises held-for-sale (1) $ — $ — $ 200 $ 200  Other real estate owned (1) — — 2,407 2,407  Total assets $ — $ — $ 2,607 $ 2,607  (1) Includes assets directly charged-down to fair value during the year-to-date period. 
Fair Value Inputs, Assets, Quantitative Information	  (Dollars in Thousands) Quantitative Information about Level 3 Fair Value Measurements  December 31, 2017 Fair Value Valuation Technique Unobservable Input (Weighted Average)  Other real estate owned $ 90 Appraisal N/A —  Cost to sell 8% ( 8% )   Range  December 31, 2016 Fair Value Valuation Technique Unobservable Input (Weighted Average)  Premises held-for-sale $ 200 Appraisal Qualitative adjustment 5% ( 5% )   Other real estate owned 2,407 Appraisal N/A —  Cost to sell 8% ( 8% ) 

Parent Company (Franklin Fina47

Parent Company (Franklin Financial Services Corporation) Financial Information (Tables)	12 Months Ended
	Dec. 31, 2017
Parent Company (Franklin Financial Services Corporation) Financial Information [Abstract]
Balance Sheets	  December 31  (Dollars in thousands) 2017 2016  Assets:  Cash and cash equivalents $ 250 $ 851  Investment securities 365 —  Equity investment in subsidiaries 114,387 115,794  Other assets 184 39  Total assets $ 115,186 116,684   Liabilities:  Other liabilities $ 42 $ 191  Total liabilities 42 191  Shareholders' equity 115,144 116,493  Total liabilities and shareholders' equity $ 115,186 $ 116,684 
Statements Of Income	  Years Ended December 31  (Dollars in thousands) 2017 2016 2015  Income:  Dividends from Bank subsidiary $ 3,225 $ 4,006 $ 300  Other income — — 171  3,225 4,006 471  Expenses:  Operating expenses 1,107 972 986  Income before income taxes and equity in undistributed income of subsidiaries 2,118 3,034 (515)  Income tax benefit 348 301 328  Equity in undistributed income of subsidiaries (290) 4,752 10,391  Net income $ 2,176 $ 8,087 $ 10,204 
Statements Of Comprehensive Income	  Years ended December 31  (Dollars in thousands) 2017 2016 2015  Net Income $ 2,176 $ 8,087 $ 10,204  Securities:  Unrealized gains arising during the period 201 — —  Reclassification adjustment for net (gains) losses included in net income - — —  Net Unrealized gains 201 — —  Tax effect (68) — —  Net of tax amount 133 — —  Total other comprehensive income of Parent 133 — —  Other comprehensive (loss) income of subsidiaries (954) (493) (622)  Total Comprehensive Income $ 1,355 $ 7,594 $ 9,582 
Statements Of Cash Flows	  Years Ended December 31  (Dollars in thousands) 2017 2016 2015  Cash flows from operating activities  Net income $ 2,176 $ 8,087 $ 10,204  Adjustments to reconcile net income to net cash provided  by operating activities:  Equity in undistributed loss (income) of subsidiary 290 (4,752) (10,391)  Stock option compensation 161 88 74  Deferred tax benefit (26) — —  (Increase) decrease in other assets/liabilities (337) (307) 1,800  Net cash provided by operating activities 2,264 3,116 1,687   Cash flows from financing activities  Dividends paid (4,031) (3,523) (3,139)  Cash received from option exercises 175 82 92  Common stock issued under dividend reinvestment plan 991 1,671 1,246  Treasury stock purchase — (795) —  Net cash used in financing activities (2,865) (2,565) (1,801)  (Decrease) increase in cash and cash equivalents (601) 551 (114)  Cash and cash equivalents as of January 1 851 300 414  Cash and cash equivalents as of December 31 $ 250 $ 851 $ 300 

Quarterly Results Of Operatio48

Quarterly Results Of Operations (Tables)	12 Months Ended
	Dec. 31, 2017
Quarterly Results Of Operations [Abstract]
Schedule Of Quarterly Financial Information	  (Dollars in thousands, except per share) Three months ended  March 31, 2017 June 30, 2017 September 30, 2017 December 31, 2017   Interest income $ 9,546 $ 9,938 $ 10,063 $ 10,339  Interest expense 581 590 629 691  Net interest income 8,965 9,348 9,434 9,648  Provision for loan losses 120 50 250 250  Other noninterest income 2,923 3,155 2,970 3,137  Securities gains 2 — 1 —  Noninterest expense 7,957 8,161 8,305 18,750 *  Income (loss) before income taxes 3,813 4,292 3,850 (6,215)  Federal income tax expense 793 950 774 1,048 **  Net Income $ 3,020 3,342 3,076 (7,263)  Basic earnings per share $ 0.70 $ 0.77 $ 0.71 $ (1.67)  Diluted earnings per share $ 0.70 $ 0.77 $ 0.70 $ (1.67)  Dividends declared per share $ 0.21 $ 0.24 $ 0.24 $ 0.24  * Includes $10 million for the accrual of a legal settlement described in Item 3 Legal Proceedings ** Includes $2.3 million for revaluation of the net deferred tax assets      (Dollars in thousands, except per share) Three months ended  March 31, 2016 June 30, 2016 September 30, 2016 December 31, 2016   Interest income $ 9,098 $ 8,988 $ 9,348 $ 9,544  Interest expense 545 548 563 589  Net interest income 8,553 8,440 8,785 8,955  Provision for loan losses 300 1,875 1,150 450  Other noninterest income 2,981 2,854 2,813 2,984  Securities (losses) gains (28) 2 (10) 8  Noninterest expense 7,795 7,730 7,980 9,670  Income before income taxes 3,411 1,691 2,458 1,827  Federal income tax expense 685 130 383 104  Net Income $ 2,726 1,561 2,075 1,723  Basic earnings per share $ 0.64 $ 0.36 $ 0.48 $ 0.40  Diluted earnings per share $ 0.64 $ 0.36 $ 0.48 $ 0.40  Dividends declared per share $ 0.19 $ 0.21 $ 0.21 $ 0.21 

Summary Of Significant Accoun49

Summary Of Significant Accounting Policies (Narrative) (Details) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017USD ($)store$ / shares	Dec. 31, 2017USD ($)store$ / shares	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of Stores | store	22	22
Restricted stock	$ 456	$ 456	$ 1,767
Days past due when accrual of interest is discontinued		90 days
Consumer loans typical charge-off period, in days		180 days
Servicing Asset	12,600	$ 12,600	15,800	$ 21,600
Goodwill	9,016	9,016	9,016
Assets Held-in-trust	686,900	686,900	622,600
Share-based Compensation		161	$ 88	$ 74
Tax Cuts and Jobs Act of 2017, reclassification from AOCI to retained earnings	992
Federal Home Loan Bank of Pittsburgh [Member]
Summary Of Significant Accounting Policies [Line Items]
Restricted stock	$ 426	$ 426
Restricted Stock Cost | $ / shares	$ 100	$ 100
Federal Home Loan Bank of Pittsburgh [Member] | Non Required FHLB Stock [Member]
Summary Of Significant Accounting Policies [Line Items]
Restricted stock	$ 30	$ 30
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Designated Hedge Risk Percent Range		125.00%
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Designated Hedge Risk Percent Range		80.00%

Summary Of Significant Accoun50

Summary Of Significant Accounting Policies (Schedule Of Earnings Per Share Basic And Diluted) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Summary Of Significant Accounting Policies [Abstract]
Weighted average shares outstanding (basic)									4,337	4,297	4,244
Impact of common stock equivalents									22	5	6
Weighted average shares outstanding (diluted)									4,359	4,302	4,250
Anti-dilutive options excluded from calculation										9	27
Net income	$ (7,263)	$ 3,076	$ 3,342	$ 3,020	$ 1,723	$ 2,075	$ 1,561	$ 2,726	$ 2,176	$ 8,087	$ 10,204
Basic earnings per share	$ (1.67)	$ 0.71	$ 0.77	$ 0.70	$ 0.40	$ 0.48	$ 0.36	$ 0.64	$ 0.50	$ 1.88	$ 2.40
Diluted earnings per share	$ (1.67)	$ 0.70	$ 0.77	$ 0.70	$ 0.40	$ 0.48	$ 0.36	$ 0.64	$ 0.50	$ 1.88	$ 2.40

Regulatory Matters (Narrative)

Regulatory Matters (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments without Regulatory Approval	$ 92.3
Capital Ratios, Basel III, Capital Conservation Buffer	0.625%
Capital Ratios, Basel III, Capital Conservation Buffer, Year Two	1.25%
Capital Ratios, Basel III, Capital Conservation Buffer, Year Three	1.875%
Capital Ratios, Basel III, Capital Conservation Buffer, Year Four	2.50%
Regulatory buffer percentage	1.25%
Pennsylvania [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 Leverage Ratio: Ratio	6.00%
Common Equity Tier 1 Risk-based Capital Ratio: Ratio	10.00%
Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 Leverage Ratio: Ratio	9.64%	10.02%	[1]
Common Equity Tier 1 Risk-based Capital Ratio: Ratio	13.93%	14.29%	[2]
Common Equity Tier 1 Risk-based Capital Ratio: Well Capitalized Minimum: Ratio	6.50%	6.50%	[2]
Tier 1 Risk-based Capital Ratio: Well Capitalized Minimum: Ratio	8.00%	8.00%	[3]
Tier 1 Leverage Ratio: Well Capitalized Minimum: Ratio	5.00%	5.00%	[1]
Total Risk-based Capital Ratio: Well Capitalized Minimum: Ratio	10.00%	10.00%	[4]
Capital ratios, capital conservation buffer	7.19%
Total Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio	8.00%	8.00%	[4]
Total Risk-based Capital Ratio: Ratio	15.19%	15.55%	[4]
[1]	Tier 1 capital / average quarterly assets
[2]	Common equity Tier 1 capital / total risk-weighted assets
[3]	Tier 1 capital / total risk-weighted assets
[4]	Total risk-based capital / total risk-weighted assets

Regulatory Matters (Schedule Of

Regulatory Matters (Schedule Of The Total Risk-based, Tier 1 Risk-based And Tier 1 Leverage Requirements) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Franklin Financial Services Corporation [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1 Risk-based Capital Ratio: Ratio	14.06%	14.41%	[1]
Common Equity Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio	4.50%	4.50%	[1]
Tier 1 Risk-based Capital Ratio: Ratio	14.06%	14.41%	[2]
Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio	6.00%	6.00%	[2]
Total Risk-based Capital Ratio: Ratio	15.31%	15.67%	[3]
Total Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio	8.00%	8.00%	[3]
Tier 1 Leverage Ratio: Ratio	9.73%	10.11%	[4]
Tier 1 Leverage Ratio: Adequately Capitalized Minimum: Ratio	4.00%	4.00%	[4]
Common Equity Tier 1 Risk-based Capital Ratio: Amount	$ 112,315	$ 111,691	[1]
Common Equity Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum, Amount	35,953	34,889	[1]
Tier 1 Risk-based Capital Ratio: Amount	112,315	111,691	[2]
Tier 1 Risk-based Capital Ratio: Minimum to be Adequately Capitalized Amount	47,938	46,518	[2]
Total Risk-based Capital Ratio: Amount	122,324	121,456	[3]
Total Risk-based Capital Ratio: Minimum to be Adequately Capitalized Amount	63,917	62,024	[3]
Tier 1 Leverage Ratio: Amount	112,315	111,691	[4]
Tier 1 Leverage Ratio: Minimum to be Adequately Capitalized Amount	$ 46,175	$ 44,209	[4]
Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1 Risk-based Capital Ratio: Ratio	13.93%	14.29%	[1]
Common Equity Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio	4.50%	4.50%	[1]
Common Equity Tier 1 Risk-based Capital Ratio: Well Capitalized Minimum: Ratio	6.50%	6.50%	[1]
Tier 1 Risk-based Capital Ratio: Ratio	13.93%	14.29%	[2]
Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio	6.00%	6.00%	[2]
Tier 1 Risk-based Capital Ratio: Well Capitalized Minimum: Ratio	8.00%	8.00%	[2]
Total Risk-based Capital Ratio: Ratio	15.19%	15.55%	[3]
Total Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio	8.00%	8.00%	[3]
Total Risk-based Capital Ratio: Well Capitalized Minimum: Ratio	10.00%	10.00%	[3]
Tier 1 Leverage Ratio: Ratio	9.64%	10.02%	[4]
Tier 1 Leverage Ratio: Adequately Capitalized Minimum: Ratio	4.00%	4.00%	[4]
Tier 1 Leverage Ratio: Well Capitalized Minimum: Ratio	5.00%	5.00%	[4]
Common Equity Tier 1 Risk-based Capital Ratio: Amount	$ 111,496	$ 110,932	[1]
Common Equity Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum, Amount	36,010	34,943	[1]
Common Equity Tier 1 Risk-based Capital Ratio: Well Capitalized Minimum, Amount	52,014	50,473	[1]
Tier 1 Risk-based Capital Ratio: Amount	111,496	110,932	[2]
Tier 1 Risk-based Capital Ratio: Minimum to be Adequately Capitalized Amount	48,013	46,590	[2]
Tier 1 Risk-based Capital Ratio: Minimum to be Well Capitalized Amount	64,018	62,121	[2]
Total Risk-based Capital Ratio: Amount	121,521	120,712	[3]
Total Risk-based Capital Ratio: Minimum to be Adequately Capitalized Amount	64,018	62,121	[3]
Total Risk-based Capital Ratio: Minimum to be Well Capitalized Amount	80,022	77,651	[3]
Tier 1 Leverage Ratio: Amount	111,496	110,932	[4]
Tier 1 Leverage Ratio: Minimum to be Adequately Capitalized Amount	46,242	44,270	[4]
Tier 1 Leverage Ratio: Minimum to be Well Capitalized Amount	$ 57,802	$ 55,337	[4]
[1]	Common equity Tier 1 capital / total risk-weighted assets
[2]	Tier 1 capital / total risk-weighted assets
[3]	Total risk-based capital / total risk-weighted assets
[4]	Tier 1 capital / average quarterly assets

Restricted Cash Balances (Detai

Restricted Cash Balances (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Restricted Cash Balances [Abstract]
Restricted Cash and Cash Equivalents	$ 7.1	$ 6.4

Investments (Narrative) (Detail

Investments (Narrative) (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)item$ / shares	Dec. 31, 2015USD ($)	Dec. 31, 2016USD ($)
Schedule of Available-for-sale Securities [Line Items]
Average life of the equity portfolio	3 years 6 months
Percent of shareholders equity benchmark for investments in a single issuer	10.00%
Restricted stock	$ 456		$ 1,767
Number of investments in a single issuer exceeding benchmark | item	0
Securities pledged as collateral	$ 84,100		79,100
Gain on conversion of investment security		$ 728
Available for sale	127,336		$ 143,875
Federal Home Loan Bank of Pittsburgh [Member]
Schedule of Available-for-sale Securities [Line Items]
Restricted stock	$ 426
Restricted stock per share | $ / shares	$ 100

Investments (Unrealized Gain (l

Investments (Unrealized Gain (loss) On Investments) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 127,182	$ 143,895
Gross unrealized gains	1,200	1,554
Gross unrealized losses	(1,046)	(1,574)
Available for sale	127,336	143,875
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	164	164
Gross unrealized gains	201	126
Available for sale	365	290
U.S. Government And Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	11,451	12,598
Gross unrealized gains	64	148
Gross unrealized losses	(43)	(26)
Available for sale	11,472	12,720
Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	57,374	62,763
Gross unrealized gains	650	793
Gross unrealized losses	(252)	(571)
Available for sale	57,772	62,985
Trust Preferred Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	6,000	5,979
Gross unrealized losses	(183)	(518)
Available for sale	5,817	5,461
Agency Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	51,307	61,305
Gross unrealized gains	197	431
Gross unrealized losses	(567)	(452)
Available for sale	50,937	61,284
Private-Label Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	858	1,053
Gross unrealized gains	88	56
Gross unrealized losses		(5)
Available for sale	946	1,104
Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	28	33
Gross unrealized losses	(1)	(2)
Available for sale	$ 27	$ 31

Investments (Amortized Cost And

Investments (Amortized Cost And Fair Value Of Debt Securities, By Contractual Maturity) (Details) $ in Thousands	Dec. 31, 2017USD ($)
Investments [Abstract]
Due in one year or less, Amortized cost	$ 19
Due after one year through five years, Amortized cost	13,784
Due after five years through ten years, Amortized cost	33,748
Due after ten years, Amortized cost	27,302
Amortized Cost Contractual Maturities Subtotal	74,853
Mortgage-backed securities, Amortized cost	52,165
Available-for-sale Securities, Debt Maturities, Amortized cost	127,018
Due in one year or less, Fair value	19
Due after one year through five years, Fair value	13,920
Due after five years through ten years, Fair value	33,770
Due after ten years, Fair value	27,379
Fair Value Contractual Maturities Subtotal	75,088
Mortgage-backed securities, Fair value	51,883
Available-for-sale Securities, Debt Securities, Fair Value	$ 126,971

Investments (Composition Of Net

Investments (Composition Of Net Realized Securities Gains) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Investments [Abstract]
Gross gains realized	$ 3	$ 22	$ 736
Net gains realized	$ 3	$ 22	$ 736

Investments (Schedule Of Unreal

Investments (Schedule Of Unrealized Loss On Investments) (Details) $ in Thousands	Dec. 31, 2017USD ($)security	Dec. 31, 2016USD ($)security
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months: Fair Value	$ 33,585	$ 51,472
Less than 12 months: Unrealized Losses	$ (241)	$ (790)
Less than 12 months: Count | security	58	84
12 months or more: Fair Value	$ 36,203	$ 15,132
12 months or more: Unrealized Losses	$ (805)	$ (784)
12 months or more: Count | security	69	31
Fair Value	$ 69,788	$ 66,604
Unrealized Losses	$ (1,046)	$ (1,574)
Count | security	127	115
U.S. Government And Agency Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months: Fair Value	$ 2,315	$ 789
Less than 12 months: Unrealized Losses	$ (11)	$ (9)
Less than 12 months: Count | security	5	1
12 months or more: Fair Value	$ 3,528	$ 3,413
12 months or more: Unrealized Losses	$ (32)	$ (17)
12 months or more: Count | security	10	10
Fair Value	$ 5,843	$ 4,202
Unrealized Losses	$ (43)	$ (26)
Count | security	15	11
Municipal Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months: Fair Value	$ 13,767	$ 23,407
Less than 12 months: Unrealized Losses	$ (89)	$ (417)
Less than 12 months: Count | security	22	43
12 months or more: Fair Value	$ 7,507	$ 1,598
12 months or more: Unrealized Losses	$ (163)	$ (154)
12 months or more: Count | security	14	2
Fair Value	$ 21,274	$ 25,005
Unrealized Losses	$ (252)	$ (571)
Count | security	36	45
Trust Preferred Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months: Fair Value	$ 1,216
Less than 12 months: Unrealized Losses	$ (12)
Less than 12 months: Count | security	2
12 months or more: Fair Value	$ 4,601	$ 5,461
12 months or more: Unrealized Losses	$ (171)	$ (518)
12 months or more: Count | security	5	7
Fair Value	$ 5,817	$ 5,461
Unrealized Losses	$ (183)	$ (518)
Count | security	7	7
Agency Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months: Fair Value	$ 16,287	$ 26,995
Less than 12 months: Unrealized Losses	$ (129)	$ (359)
Less than 12 months: Count | security	29	39
12 months or more: Fair Value	$ 20,563	$ 4,656
12 months or more: Unrealized Losses	$ (438)	$ (93)
12 months or more: Count | security	39	11
Fair Value	$ 36,850	$ 31,651
Unrealized Losses	$ (567)	$ (452)
Count | security	68	50
Private-Label Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months: Fair Value		$ 281
Less than 12 months: Unrealized Losses		$ (5)
Less than 12 months: Count | security		1
Fair Value		$ 281
Unrealized Losses		$ (5)
Count | security		1
Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
12 months or more: Fair Value	$ 4	$ 4
12 months or more: Unrealized Losses	$ (1)	$ (2)
12 months or more: Count | security	1	1
Fair Value	$ 4	$ 4
Unrealized Losses	$ (1)	$ (2)
Count | security	1	1

Investments (Other Than Tempora

Investments (Other Than Temporary Impairment, Credit Losses Recognized In Earnings) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Investments [Abstract]
Balance of cumulative credit-related OTTI at January 1	$ 595	$ 555
Additions for credit-related OTTI not previously recognized		40
Balance of credit-related OTTI at September 30	$ 595	$ 595

Loans (Schedule Of Loans Outsta

Loans (Schedule Of Loans Outstanding) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 943,700	$ 893,873
Less: Allowance for loan losses	(11,792)	(11,075)
Net Loans	931,908	882,798
Net unamortized deferred loan costs	98	242
Loans pledged as collateral for borrowings and commitments from: FHLB	737,313	711,682
Loans pledged as collateral for borrowings and commitments from :Federal Reserve Bank	35,740	41,152
Total	773,053	752,834
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	208,805	218,783
Residential Real Estate - Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	9,901	8,975
Less: Allowance for loan losses	(224)	(224)
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	428,428	390,584
Less: Allowance for loan losses	(6,526)	(6,109)
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	291,519	270,826
Less: Allowance for loan losses	(2,110)	(1,893)
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5,047	4,705
Less: Allowance for loan losses	(105)	(100)
Consumer First Liens [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	97,159	103,125
Consumer Junior Liens And Lines Of Credit [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	45,043	44,817
Consumer [Member] | Residential Real Estate - Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,813	1,350
Commercial First Lien [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	61,275	65,445
Commercial Junior Liens And Lines Of Credit [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5,328	5,396
Commercial [Member] | Residential Real Estate - Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	8,088	7,625
First Liens [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	158,434	168,570
Less: Allowance for loan losses	(1,060)	(1,105)
Junior Lines And Lines Of Credit [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 50,371	$ 50,213

Loans (Schedule Of Loans To Rel

Loans (Schedule Of Loans To Related Parties) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Loans [Abstract]
Balance at beginning of year	$ 23,243	$ 18,954
New loans made	1,513	6,400
Repayments	(2,633)	(2,111)
Balance at end of year	$ 22,123	$ 23,243

Loan Quality (Narrative) (Detai

Loan Quality (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Residential properties in the process of foreclosure	$ 132	$ 123
Interest not recognized on nonaccrual loans	159	175	$ 335
Impaired loans balances, general allocation pool	677
Impaired loans	12,600	$ 15,100
Maximum [Member] | Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired loans balances, added to general allocation pool	$ 250

Loan Quality (Internal Credit R

Loan Quality (Internal Credit Rating For The Loan Portfolio) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	$ 943,700	$ 893,873
Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	930,899	875,325
Special Mention [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	680	1,212
Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	12,121	17,336
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	208,805	218,783
Residential Real Estate [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	207,766	217,216
Residential Real Estate [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount		255
Residential Real Estate [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,039	1,312
Residential Real Estate [Member] | First Liens [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	158,434	168,570
Residential Real Estate [Member] | First Liens [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	157,395	167,199
Residential Real Estate [Member] | First Liens [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount		227
Residential Real Estate [Member] | First Liens [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,039	1,144
Residential Real Estate [Member] | Junior Liens & Lines Of Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	50,371	50,213
Residential Real Estate [Member] | Junior Liens & Lines Of Credit [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	50,371	50,017
Residential Real Estate [Member] | Junior Liens & Lines Of Credit [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount		28
Residential Real Estate [Member] | Junior Liens & Lines Of Credit [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount		168
Residential Real Estate - Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	9,901	8,975
Residential Real Estate - Construction [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,893	8,220
Residential Real Estate - Construction [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,008	755
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	428,428	390,584
Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	419,277	377,283
Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	680
Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	8,471	13,301
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	291,519	270,826
Commercial [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	289,916	267,901
Commercial [Member] | Special Mention [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount		957
Commercial [Member] | Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	1,603	1,968
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	5,047	4,705
Consumer [Member] | Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount	$ 5,047	$ 4,705

Loan Quality (Aging Of Payments

Loan Quality (Aging Of Payments Of The Loan Portfolio) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 938,928	$ 885,023
Loans Past Due and Still Accruing	2,097	4,074
Non-accrual loans	2,675	4,776
Total Loans	943,700	893,873
30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing	1,179	2,470
60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing	918	939
90 Days+ Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing		665
Residential Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	207,449	216,720
Loans Past Due and Still Accruing	1,188	1,746
Non-accrual loans	168	317
Total Loans	208,805	218,783
Residential Real Estate [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing	624	1,332
Residential Real Estate [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing	564	414
Residential Real Estate [Member] | First Liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	157,247	166,689
Loans Past Due and Still Accruing	1,019	1,650
Non-accrual loans	168	231
Total Loans	158,434	168,570
Residential Real Estate [Member] | First Liens [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing	485	1,236
Residential Real Estate [Member] | First Liens [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing	534	414
Residential Real Estate [Member] | Junior Liens & Lines Of Credit [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	50,202	50,031
Loans Past Due and Still Accruing	169	96
Non-accrual loans		86
Total Loans	50,371	50,213
Residential Real Estate [Member] | Junior Liens & Lines Of Credit [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing	139	96
Residential Real Estate [Member] | Junior Liens & Lines Of Credit [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing	30
Residential Real Estate - Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	9,435	8,495
Non-accrual loans	466	480
Total Loans	9,901	8,975
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	425,806	384,658
Loans Past Due and Still Accruing	768	1,970
Non-accrual loans	1,854	3,956
Total Loans	428,428	390,584
Commercial Real Estate [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing	421	858
Commercial Real Estate [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing	347	447
Commercial Real Estate [Member] | 90 Days+ Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing		665
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	291,221	270,478
Loans Past Due and Still Accruing	111	325
Non-accrual loans	187	23
Total Loans	291,519	270,826
Commercial [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing	111	250
Commercial [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing		75
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	5,017	4,672
Loans Past Due and Still Accruing	30	33
Total Loans	5,047	4,705
Consumer [Member] | 30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing	23	30
Consumer [Member] | 60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans Past Due and Still Accruing	$ 7	$ 3

Loan Quality (Impaired Financin

Loan Quality (Impaired Financing Receivables) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	$ 12,583	$ 15,067
Unpaid Principal Balance With No Allowance	13,223	15,826
Average Recorded Investment	13,803	19,617	$ 16,928
Interest Income Recognized	474	632	135
Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	869	1,041
Unpaid Principal Balance With No Allowance	950	1,123
Average Recorded Investment	1,147	1,287	1,636
Interest Income Recognized	39	39	13
Residential Real Estate [Member] | First Liens [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	869	956
Unpaid Principal Balance With No Allowance	950	1,030
Average Recorded Investment	1,083	1,194	1,531
Interest Income Recognized	39	38	13
Residential Real Estate [Member] | Junior Liens & Lines Of Credit [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance		85
Unpaid Principal Balance With No Allowance		93
Average Recorded Investment	64	93	105
Interest Income Recognized		1
Residential Real Estate - Construction [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	466	480
Unpaid Principal Balance With No Allowance	531	535
Average Recorded Investment	473	492	505
Interest Income Recognized		4
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	11,061	13,523
Unpaid Principal Balance With No Allowance	11,541	14,133
Average Recorded Investment	11,938	17,806	14,509
Interest Income Recognized	435	589	122
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	187	23
Unpaid Principal Balance With No Allowance	201	35
Average Recorded Investment	$ 245	$ 32	$ 278

Loan Quality (Troubled Debt Res

Loan Quality (Troubled Debt Restructuring Loans) (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2017USD ($)contract	Dec. 31, 2016USD ($)contract
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		17	17
Troubled Debt Restructurings: Recorded Investment		$ 12,186	$ 13,419
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Number of Contracts | contract		2	2
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Recorded Investment		$ 634	$ 1,401
New During Period, Number of Contracts | contract		0	2
New During Period, Pre-TDR Modification			$ 763
New During Period, After-TDR Modification			763
New During Period, Recorded Investment			750
Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 11,555	12,018
Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 631	$ 1,401
Residential Real Estate - Construction [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		1	1
Troubled Debt Restructurings: Recorded Investment		$ 466	$ 480
Residential Real Estate - Construction [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 466	$ 480
Residential Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		5	5
Troubled Debt Restructurings: Recorded Investment		$ 737	$ 875
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Number of Contracts | contract		1	1
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Recorded Investment		$ 39	$ 151
New During Period, Number of Contracts | contract			1
New During Period, Pre-TDR Modification			$ 238
New During Period, After-TDR Modification			238
New During Period, Recorded Investment			237
Residential Real Estate [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	701	724
Residential Real Estate [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 36	$ 151
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Number of Contracts | contract		11	11
Troubled Debt Restructurings: Recorded Investment		$ 10,983	$ 12,064
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Number of Contracts | contract		1	1
Troubled Debt Restructurings That Have Defaulted on Modified Terms in the Last Twelve Months: Recorded Investment		$ 595	$ 1,250
New During Period, Number of Contracts | contract			1
New During Period, Pre-TDR Modification			$ 525
New During Period, After-TDR Modification			525
New During Period, Recorded Investment			513
Commercial Real Estate [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	10,388	10,814
Commercial Real Estate [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Troubled Debt Restructurings: Recorded Investment	[1]	$ 595	$ 1,250
[1]	The performing status is determined by the loan's compliance with the modified terms.

Loan Quality (Allowance For Loa

Loan Quality (Allowance For Loan Losses, By Loan Segment) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				$ 11,075				$ 10,086	$ 11,075	$ 10,086	$ 9,111
Charge-offs									(137)	(3,082)	(571)
Recoveries									184	296	261
Provision	$ 250	$ 250	$ 50	120	$ 450	$ 1,150	$ 1,875	300	670	3,775	1,285
Allowance, Ending Balance	11,792				11,075				11,792	11,075	10,086
Loans evaluated for allowance individually	11,906				14,683				11,906	14,683
Loans evaluated for allowance collectively	931,794				879,190				931,794	879,190
Total Loans	943,700				893,873				943,700	893,873
Allowance established for loan evaluated collectively	11,792				11,075				11,792	11,075
Total Allowance	11,792				11,075				11,792	11,075
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Loans	208,805				218,783				208,805	218,783
Residential Real Estate - Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				224				194	224	194	214
Charge-offs										(41)	(21)
Recoveries											18
Provision										71	(17)
Allowance, Ending Balance	224				224				224	224	194
Loans evaluated for allowance individually	466				480				466	480
Loans evaluated for allowance collectively	9,435				8,495				9,435	8,495
Total Loans	9,901				8,975				9,901	8,975
Allowance established for loan evaluated collectively	224				224				224	224
Total Allowance	224				224				224	224
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				6,109				5,649	6,109	5,649	4,978
Charge-offs									(14)	(2,751)
Recoveries									17	19	14
Provision									414	3,192	657
Allowance, Ending Balance	6,526				6,109				6,526	6,109	5,649
Loans evaluated for allowance individually	10,981				13,523				10,981	13,523
Loans evaluated for allowance collectively	417,447				377,061				417,447	377,061
Total Loans	428,428				390,584				428,428	390,584
Allowance established for loan evaluated collectively	6,526				6,109				6,526	6,109
Total Allowance	6,526				6,109				6,526	6,109
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				1,893				1,519	1,893	1,519	1,515
Charge-offs									(8)	(74)	(270)
Recoveries									117	167	148
Provision									108	281	126
Allowance, Ending Balance	2,110				1,893				2,110	1,893	1,519
Loans evaluated for allowance collectively	291,519				270,826				291,519	270,826
Total Loans	291,519				270,826				291,519	270,826
Allowance established for loan evaluated collectively	2,110				1,893				2,110	1,893
Total Allowance	2,110				1,893				2,110	1,893
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				100				102	100	102	127
Charge-offs									(102)	(167)	(198)
Recoveries									37	75	74
Provision									70	90	99
Allowance, Ending Balance	105				100				105	100	102
Loans evaluated for allowance collectively	5,047				4,705				5,047	4,705
Total Loans	5,047				4,705				5,047	4,705
Allowance established for loan evaluated collectively	105				100				105	100
Total Allowance	105				100				105	100
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				1,321				1,325	1,321	1,325	1,012
Provision									116	(4)	313
Allowance, Ending Balance	1,437				1,321				1,437	1,321	1,325
Allowance established for loan evaluated collectively	1,437				1,321				1,437	1,321
Total Allowance	1,437				1,321				1,437	1,321
First Liens [Member] | Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				1,105				989	1,105	989	994
Charge-offs									(13)	(49)	(43)
Recoveries									2	35	7
Provision									(34)	130	31
Allowance, Ending Balance	1,060				1,105				1,060	1,105	989
Loans evaluated for allowance individually	459				628				459	628
Loans evaluated for allowance collectively	157,975				167,942				157,975	167,942
Total Loans	158,434				168,570				158,434	168,570
Allowance established for loan evaluated collectively	1,060				1,105				1,060	1,105
Total Allowance	1,060				1,105				1,060	1,105
Junior Liens & Lines Of Credit [Member] | Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance, Beginning Balance				$ 323				$ 308	323	308	271
Charge-offs											(39)
Recoveries									11
Provision									(4)	15	76
Allowance, Ending Balance	330				323				330	323	$ 308
Loans evaluated for allowance individually					52					52
Loans evaluated for allowance collectively	50,371				50,161				50,371	50,161
Total Loans	50,371				50,213				50,371	50,213
Allowance established for loan evaluated collectively	330				323				330	323
Total Allowance	$ 330				$ 323				$ 330	$ 323

Premises And Equipment (Premise

Premises And Equipment (Premises And Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Total cost	$ 39,756	$ 39,092
Less: Accumulated depreciation	(26,015)	(25,034)
Net premises and equipment	13,741	14,058
Land [Member]
Property, Plant and Equipment [Line Items]
Total cost	2,962	3,000
Building and leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Total cost	24,347	24,190
Furniture, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 12,447	$ 11,902
Maximum [Member] | Building and leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated Life	30 years
Maximum [Member] | Furniture, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated Life	10 years
Minimum [Member] | Building and leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated Life	15 years
Minimum [Member] | Furniture, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated Life	3 years

Premises And Equipment (Schedul

Premises And Equipment (Schedule Of Depreciation And Rent Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Premises And Equipment [Abstract]
Depreciation expense	$ 1,236	$ 1,270	$ 1,269
Rent expense on leases	$ 704	$ 713	$ 735

Premises And Equipment (Operati

Premises And Equipment (Operating Leases Of Lessee Disclosure) (Details) $ in Thousands	Dec. 31, 2017USD ($)
Premises And Equipment [Abstract]
2,018	$ 634
2,019	523
2,020	490
2,021	485
2,022	482
2023 and beyond	3,628
Total	$ 6,242

Other Real Estate Owned (Detail

Other Real Estate Owned (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Real Estate Owned [Abstract]
Balance at beginning of the period	$ 4,915	$ 6,451	$ 3,666
Additions	90	329	3,626
Proceeds from dispositions	(2,298)	(625)	(508)
(Loss) gain on sales, net	(26)	(31)	32
Valuation adjustment	(83)	(1,209)	(365)
Balance at the end of the period	$ 2,598	$ 4,915	$ 6,451

Intangible Assets (Narrative) (

Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Intangible Assets [Abstract]
Goodwill	$ 9,016	$ 9,016
Goodwill impaired	$ 0

Deposits (Narrative) (Details)

Deposits (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deposits [Abstract]
Time deposits greater than $250,000	$ 12,019	$ 6,200
Deposits of directors and executive officers and related interests and affiliated enterprises	$ 4,100	$ 3,300

Deposits (Schedule Of Deposits)

Deposits (Schedule Of Deposits) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deposits [Abstract]
Non-interest bearing checking	$ 196,853	$ 170,345
Interest-bearing checking	280,944	241,906
Money Management	415,045	420,309
Savings	78,868	74,925
Total interest-bearing checking and savings	774,857	737,140
Retail time deposits	72,211	71,264
Brokered time deposits	3,260	3,371
Total time deposits	75,471	74,635
Total deposits	1,047,181	982,120
Overdrawn deposit accounts reclassified as loans	$ 154	$ 181

Deposits (Maturity Of Time Depo

Deposits (Maturity Of Time Deposits Of $250,000 Or More) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deposits [Abstract]
Within three months	$ 9,964
Over three through six months	628
Over six through twelve months	755
Over twelve months	672
Total	$ 12,019	$ 6,200

Deposits (Maturities Of Time De

Deposits (Maturities Of Time Deposits) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deposits [Line Items]
2,018	$ 49,346
2,019	10,703
2,020	7,414
2,021	3,680
2,022	4,328
Total time deposits	75,471	$ 74,635
Retail Time Deposits [Member]
Deposits [Line Items]
2,018	46,338
2,019	10,451
2,020	7,414
2,021	3,680
2,022	4,328
Total time deposits	72,211
Brokered Time Deposits [Member]
Deposits [Line Items]
2,018	3,008
2,019	252
Total time deposits	$ 3,260

Other Borrowings (Narrative) (D

Other Borrowings (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)
Other Borrowings [Abstract]
Federal Home Loan Bank, Maximum Term Of Commitment	364 days
Maximum borrowing capacity with the FHLB	$ 314.6
Amount available to borrow at year-end	314.6
Unsecured line of credit	6
Available through federal reserve discount window	$ 20

Other Borrowings (Short Term Bo

Other Borrowings (Short Term Borrowings) (Details) - FHLB Open Repo [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Ending balance		$ 24,270
Range of interest rates paid at year end		0.74%
Maximum month-end balance during the year	$ 13,000	$ 24,270
Average balance during the year	$ 1,894	$ 5,258
Weighted average interest rate during the year	0.83%	0.63%
Weighted Average [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Range of interest rates paid at year end		0.74%

Federal Income Taxes (Narrative

Federal Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Tax Credit Carryforward [Line Items]
Federal corporate income tax rate		34.00%	34.00%	34.00%
Tax Cuts and Jobs Act of 2017, Revaluation of deferred tax assets		$ 2,291
Tax Credit Carryforward, Amount		823
Capital loss carryover		173	$ 280
Tax Credit Carryforward, Valuation Allowance		173
Penalties and interest expense		0	$ 0	$ 0
Uncertain tax positions		0
Scenario, Plan [Member]
Tax Credit Carryforward [Line Items]
Federal corporate income tax rate	21.00%
Expiring 2018 [Member]
Tax Credit Carryforward [Line Items]
Tax Credit Carryforward, Amount		$ 663

Federal Income Taxes (Schedule

Federal Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred Tax Assets
Allowance for loan losses	$ 2,476	$ 3,766
Deferred compensation	676	986
Purchase accounting	16	23
Deferred loan fees and costs, net	99	160
Capital loss carryover	173	280
Other than temporary impairment of investments	124	260
Accumulated other comprehensive loss	1,603	2,171
Depreciation		45
Other	2,191	561
Deferred Tax Assets, Gross, Total	7,358	8,252
Valuation allowance	(297)	(467)
Total gross deferred tax assets	7,061	7,785
Deferred Tax Liabilities
Depreciation	162
Joint ventures and partnerships	28	36
Pension	1,068	1,886
Mortgage servicing rights		19
Total gross deferred tax liabilities	1,258	1,941
Net deferred tax asset	$ 5,803	$ 5,844

Federal Income Taxes (Schedul81

Federal Income Taxes (Schedule Of Components Of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2017	[1]	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Federal Income Taxes [Abstract]
Current tax expense										$ 4,396	$ 2,134	$ 2,382
Deferred tax expense (benefit)										(831)	(832)	(111)
Income tax provision	$ 1,048		$ 774	$ 950	$ 793	$ 104	$ 383	$ 130	$ 685	$ 3,565	$ 1,302	$ 2,271
[1]	Includes $2.3 million for revaluation of the net deferred tax assets

Federal Income Taxes (Schedul82

Federal Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2017	[1]	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Federal Income Taxes [Abstract]
Tax provision at statutory rate (34%)										$ 3,252	$ 3,192	$ 4,241
Income on tax-exempt loans and securities										(2,056)	(1,751)	(1,566)
Nondeductible interest expense relating to carrying tax-exempt obligations										32	24	22
Revaluation of deferred tax assets										2,291
Dividends received exclusion												(2)
Income from bank owned life insurance										(171)	(210)	(182)
Life insurance proceeds												(35)
Change in valuation allowance												(200)
Stock option compensation										55	30	25
Other, net										162	17	(32)
Income tax provision	$ 1,048		$ 774	$ 950	$ 793	$ 104	$ 383	$ 130	$ 685	$ 3,565	$ 1,302	$ 2,271
Effective income tax rate										62.10%	13.90%	18.20%
Statutory rate										34.00%	34.00%	34.00%
[1]	Includes $2.3 million for revaluation of the net deferred tax assets

Accumulated Other Comprehensi83

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Loss [Abstract]
Net unrealized gains (losses) on securities	$ 154	$ (20)
Tax effect	(33)	7
Net of tax amount	121	(13)
Accumulated pension adjustment	(7,784)	(6,366)	$ (6,777)
Tax effect	1,635	2,164	2,304
Net of tax amount	(6,149)	(4,202)	$ (4,473)
Total accumulated other comprehensive loss	$ (6,028)	$ (4,215)

Benefit Plans (Narrative) (Deta

Benefit Plans (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 28, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Term of service completed before eligible for coverage		4 months	1 year 1000 hours
Employer Matching Contribution, Percent of Match		100.00%
Maximum Annual Contributions Per Employee, Percent		4.00%
Additional Employer Matching Contribution Percent Of Deferral Match From Eligible Compensation		50.00%
Maximum Additional Annual Contributions Per Employee Deferral Percent		2.00%
Employer Discretionary Contribution Percent		100.00%
Maximum Discretionary Profit Sharing Percent Of Eligible Compensation		2.00%
Related plan expense		$ 707	$ 494	$ 606
Defined Benefit Plan General Guidelines Plan Asset Allocations		25.00%
Defined Benefit Plan, Individual Stock Cap Guildlines Percentage		5.00%
Maximum [Member] | Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum		90.00%
Maximum [Member] | Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum		30.00%
Minimum [Member] | Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum		60.00%
Minimum [Member] | Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum		10.00%
Subsequent Event [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution to plan	$ 1,000

Benefit Plans (Schedule Of Plan

Benefit Plans (Schedule Of Plan's Funded Status) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Benefit Plans [Abstract]
Benefit obligation at beginning of measurement year	$ 17,881	$ 18,609	$ 19,679
Service cost	317	337	377
Interest cost	667	701	695
Actuarial loss	2,260	632	(906)
Settlement loss		(1,590)
Benefits paid	(1,236)	(808)	(1,236)
Benefit obligation at end of measurement year	19,889	17,881	18,609
Fair value of plan assets at beginning of measurement year	17,062	18,301	19,677
Actual return on plan assets net of expenses	1,366	1,159	(140)
Settlement loss		(1,590)
Benefits paid	(1,236)	(808)	(1,236)
Fair value of plan assets at end of measurement year	17,192	17,062	18,301
Defined Benefit Plan, Funded Status of Plan, Total	$ (2,697)	$ (819)	$ (308)

Benefit Plans (Schedule Of Amou

Benefit Plans (Schedule Of Amounts Recognized In Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Benefit Plans [Abstract]
Net Actuarial loss	$ (7,784)	$ (6,366)	$ (6,871)
Prior service cost obligation			94
Accumulated pension adjustment	(7,784)	(6,366)	(6,777)
Tax effect	1,635	2,164	2,304
Net amount recognized in accumulated other comprehensive loss	$ (6,149)	$ (4,202)	$ (4,473)

Benefit Plans (Schedule Of Net

Benefit Plans (Schedule Of Net Benefit Costs) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Benefit Plans [Abstract]
Service cost	$ 317	$ 337	$ 377
Interest cost	667	701	695
Expected return on plan assets	(1,072)	(1,165)	(1,182)
Amortization of prior service cost		(94)	(126)
Recognized net actuarial loss	547	579	623
Net period cost	459	358	387
Effect of settlements loss		564
Total pension expense	$ 459	$ 922	$ 387

Benefit Plans (Schedule Of Assu

Benefit Plans (Schedule Of Assumptions Used) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Assumptions used to determine benefit obligations: Discount rate	3.46%	3.89%	4.06%
Assumptions used to determine benefit obligations: Rate of compensation increase	4.00%	4.00%	4.00%
Assumptions used to determine net periodic benefit cost: Discount rate	3.89%	3.89%	3.72%
Assumptions used to determine net periodic benefit cost: Expected long-term return on plan assets	6.50%	6.50%	6.50%
Assumptions used to determine net periodic benefit cost: Rate of compensation increase	4.00%	4.00%	4.00%
Asset allocations as of measurement date:	100.00%	100.00%	100.00%
Value of shares (in thousands)			$ 68
Percent of total plan assets	0.00%	0.00%	0.40%
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocations as of measurement date:	2.00%	4.00%	8.00%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocations as of measurement date:	24.00%	33.00%	31.00%
Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocations as of measurement date:	18.00%	8.00%	7.00%
Municipal Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocations as of measurement date:	38.00%	42.00%	43.00%
Investment Fund-Debt [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocations as of measurement date:	9.00%	9.00%	8.00%
Insurance contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocations as of measurement date:	4.00%	3.00%	2.00%
Other Defined Benefit Plan Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocations as of measurement date:	5.00%	1.00%	1.00%

Benefit Plans (Schedule Of Am89

Benefit Plans (Schedule Of Amount Recognized In Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 17,192	$ 17,062	$ 18,301	$ 19,677
Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	17,192	17,062
Cash and Cash Equivalents [Member] | Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	399	726
Equity Securities [Member] | Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	4,158	5,688
Corporate Debt Securities [Member] | Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	3,108	1,310
Municipal Securities [Member] | Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	6,556	7,146
Investment Fund-Debt [Member] | Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1,570	1,454
Cash Value Of Life Insurance [Member] | Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	25	25
Deposit In Immediate Participation Guarantee Contract [Member] | Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	683	479
Other Defined Benefit Plan Assets [Member] | Fair Value [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	693	234
Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	6,953	8,581
Level 1 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	399	726
Level 1 [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	4,158	5,688
Level 1 [Member] | Investment Fund-Debt [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	1,570	1,454
Level 1 [Member] | Deposit In Immediate Participation Guarantee Contract [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	683	479
Level 1 [Member] | Other Defined Benefit Plan Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	143	234
Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	10,214	8,456
Level 2 [Member] | Corporate Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	3,108	1,310
Level 2 [Member] | Municipal Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	6,556	7,146
Level 2 [Member] | Other Defined Benefit Plan Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	550
Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	25	25
Level 3 [Member] | Cash Value Of Life Insurance [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Fair Value of Plan Assets	$ 25	$ 25

Benefit Plans (Schedule Of Chan

Benefit Plans (Schedule Of Changes In Fair Value Of Plan Assets) (Details) - Cash Value Of Life Insurance [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Balance	$ 25	$ 62
Unrealized gain (loss) relating to investments held at the reporting date		1
Purchases, sales, issuances and settlement, net		(38)
Balance	$ 25	$ 25

Benefit Plans (Schedule Of Expe

Benefit Plans (Schedule Of Expected Benefit Payments) (Details) $ in Thousands	Dec. 31, 2017USD ($)
Benefit Plans [Abstract]
2,018	$ 1,043
2,019	1,064
2,020	1,483
2,021	969
2,022	1,209
2023-2027	6,580
Total	$ 12,348

Stock Purchase Plans (Narrative

Stock Purchase Plans (Narrative) (Details) - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of service completed before eligible for coverage	4 months	1 year 1000 hours
ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance	250,000
Minimum percent of fair value market option price	90.00%
Expiration date, maximum term from grant date, in years	1 year
Grant price, percent of the stock's fair value at the time of award	95.00%
ISOP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period, in years	P10Y
Number of shares available for issuance	354,877
Minimum percent of fair value market option price	100.00%
Period of incentive stock option plan, in years	10 years
Option term, in years	10 years
Term of service completed before eligible for coverage	6 months

Stock Purchase Plans (Schedule

Stock Purchase Plans (Schedule Of Share-based Compensation, Stock Options, Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Exercised	(750)	(3,800)
ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance Outstanding	22,758	22,286	25,970
Options Granted	19,086	24,434	23,379
Options Exercised	(6,827)	(907)	(4,794)
Options Expired	(17,180)	(23,055)	(22,269)
Balance Outstanding	17,837	22,758	22,286
Weighted Average Price Per Share: Balance Outstanding	$ 22.46	$ 23.42	$ 18.91
Weighted Average Price Per Share: Granted	29.95	22.46	23.42
Weighted Average Price Per Share: Exercised	23	22.66	19.17
Weighted Average Price Per Share: Expired	22.79	23.38	19.08
Weighted Average Price Per Share: Balance Outstanding	$ 29.95	$ 22.46	$ 23.42
Aggregate Intrinsic Value	$ 132	$ 140	$ 2
Number of shares available for fututre grants	200,082
ISOP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Balance Outstanding	58,725	53,075	44,075
Options Granted	33,450	24,450	17,500
Options Exercised	(750)	(3,800)
Options Forfeited	(6,200)	(15,000)	(8,500)
Balance Outstanding	85,225	58,725	53,075
Weighted Average Price Per Share: Balance Outstanding	$ 22.03	$ 22.56	$ 23.29
Weighted Average Price Per Share: Granted	30	21.27	22
Weighted Average Price Per Share: Exercised	23.77	16
Weighted Average Price Per Share: Forfeited	27.37	24.14	25.29
Weighted Average Price Per Share: Balance Outstanding	$ 24.75	$ 22.03	$ 22.56
Aggregate Intrinsic Value	$ 1,075	$ 386	$ 50
Number of shares available for fututre grants	290,177

Stock Purchase Plans (Share-bas

Stock Purchase Plans (Share-based Compensation Arrangement By Share-based Payment Award, Options, Vested And Expected To Vest, Outstanding And Exercisable) (Details)	12 Months Ended
	Dec. 31, 2017$ / sharesshares
ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding and Exercisable | shares	17,837
Price Range, Upper Range Limit	$ 29.95
Weighted Average Exercise Price	$ 29.95
Weighted Average Remaining Life (years)	6 months
ISOP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding and Exercisable | shares	85,225
Weighted Average Exercise Price	$ 24.75
Weighted Average Remaining Life (years)	7 years 1 month 6 days
ISOP [Member] | Exercise Price Or Price Range One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding and Exercisable | shares	5,500
Price Range, Upper Range Limit	$ 16.11
Weighted Average Exercise Price	$ 16.11
Weighted Average Remaining Life (years)	1 year 2 months 12 days
ISOP [Member] | Exercise Price Or Price Range Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding and Exercisable | shares	37,350
Price Range, Lower Range Limit	$ 21.27
Price Range, Upper Range Limit	22.05
Weighted Average Exercise Price	$ 21.56
Weighted Average Remaining Life (years)	7 years 9 months 18 days
ISOP [Member] | Exercise Price Or Price Range Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding and Exercisable | shares	8,925
Price Range, Upper Range Limit	$ 23.77
Weighted Average Exercise Price	$ 23.77
Weighted Average Remaining Life (years)	1 month 6 days
ISOP [Member] | Exercise Price Or Price Range Four [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding and Exercisable | shares	33,450
Price Range, Upper Range Limit	$ 30
Weighted Average Exercise Price	$ 30
Weighted Average Remaining Life (years)	9 years 2 months 12 days

Stock Purchase Plans (Valuation

Stock Purchase Plans (Valuation Assumptions Using Black-Scholes Method) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation expense included in net income	$ 161	$ 88	$ 74
ESPP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted	19,086	24,434	23,379
ISOP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted	33,450	24,450	17,500
Risk-free interest rate	1.87%	1.22%	1.47%
Expected volatility of the Corporation's stock	23.12%	25.76%	28.64%
Expected dividend yield	2.94%	3.23%	3.09%
Expected life (in years)	5 years 3 months	5 years 3 months	5 years 3 months
Weighted average fair value of options granted	$ 4.81	$ 3.58	$ 4.22
Total compensation expense included in net income	$ 161	$ 88	$ 74

Deferred Compensation Agreeme96

Deferred Compensation Agreement (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)item	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2006item
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Deferred compensation agreements with former directors | item	1
Deferred compensation agreements with current directors | item	1
Benefit payment period, in years	10 years
Age at which benefit payments begin	65 years
Obligation under deferred compensation agreements	$ 600
Expense associated with agreements	2	$ 2	$ 76
Fulton Bancshares Corporation [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Obligation under deferred compensation agreements	386
Number of Agreements | item				2
Expected future deferred compensation expenses	$ 0

Shareholders' Equity (Narrative

Shareholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Equity, Class of Treasury Stock [Line Items]
Common Stock, Par or Stated Value Per Share	$ 1	$ 1
Repurchase plan period, in years	1 year
Shares held at cost	334,311	371,513
Common stock shares authorized	15,000,000	15,000,000
Dividend Reinvestment Plan (DRIP) [Member]
Equity, Class of Treasury Stock [Line Items]
Common stock shares authorized	1,000,000
Addition to capital from dividend reinvestment plan	$ 991
Shares purchased through DRIP, shares	30,375
Shares purchased through DRIP, value	$ 991
Dividend Reinvestment plan shares remain to be issues	614,355
Dividend Reinvestment Plan (DRIP) - Quarterly Dividends [Member]
Equity, Class of Treasury Stock [Line Items]
Addition to capital from dividend reinvestment plan	$ 669
Dividend Reinvestment Plan (DRIP) - Optional Cash Contributions [Member]
Equity, Class of Treasury Stock [Line Items]
Addition to capital from dividend reinvestment plan	$ 322

Shareholders' Equity (Schedule

Shareholders' Equity (Schedule Of Stock Repurchase Activity) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
$350,000 In Shares Per Calendar Quarter [Member]
Equity, Class of Treasury Stock [Line Items]
Plan Date	Apr. 18, 2016
Expiration	Mar. 31, 2017
Stock repurchase program, authorized amount	$ 350,000
Shares Repurchased		34,048
100,000 Shares [Member]
Equity, Class of Treasury Stock [Line Items]
Plan Date	Oct. 12, 2017
Expiration	Sep. 30, 2018
Shares Authorized	100,000
Shares Repurchased

Commitments And Contingencies99

Commitments And Contingencies (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2017USD ($)
Commitments and Contingencies [Abstract]
Standby letters of credit extension period, in years	1 year
Accrued settlement payment	$ 10

Commitments And Contingencie100

Commitments And Contingencies (Outstanding Commitments )(Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Commercial Commitments To Extend Credit [Member]
Loss Contingencies [Line Items]
Commitments outstanding	$ 249,526	$ 227,380
Consumer Commitments To Extend Credit (Secured) [Member]
Loss Contingencies [Line Items]
Commitments outstanding	44,866	44,352
Consumer Commitments To Extend Credit (Unsecured) [Member]
Loss Contingencies [Line Items]
Commitments outstanding	5,668	5,674
Commitments To Extend Credit [Member]
Loss Contingencies [Line Items]
Commitments outstanding	300,060	277,406
Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Commitments outstanding	$ 28,630	$ 23,935

Fair Value Measurements And 101

Fair Value Measurements And Fair Values Of Financial Instruments (Fair Value, By Balance Sheet Grouping) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale	$ 127,336	$ 143,875
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	58,603	36,665
Available for sale	127,336	143,875
Restricted stock	456	1,767
Loans held for sale	442	540
Net loans	931,908	882,798
Accrued interest receivable	3,847	3,592
Deposits	1,047,181	982,120
Short-term Debt		24,270
Accrued interest payable	149	116
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	58,603	36,665
Available for sale	127,336	143,875
Restricted stock	456	1,767
Loans held for sale	442	540
Net loans	929,891	889,910
Accrued interest receivable	3,847	3,592
Deposits	1,046,476	981,949
Short-term Debt		24,270
Accrued interest payable	149	116
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	58,603	36,665
Available for sale	365	290
Short-term Debt		24,270
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale	126,971	143,585
Restricted stock	456	1,767
Loans held for sale	442	540
Accrued interest receivable	3,847	3,592
Deposits	1,046,476	981,949
Accrued interest payable	149	116
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net loans	$ 929,891	$ 889,910

Fair Value Measurements And 102

Fair Value Measurements And Fair Values Of Financial Instruments (Schedule Of Fair Value, Assets And Liabilities Measured On Recurring Basis) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	$ 127,336	$ 143,875
Total assets	127,336	143,875
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	365	290
Total assets	365	290
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	126,971	143,585
Total assets	126,971	143,585
Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	365	290
Equity Securities [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	365	290
U.S. Government And Agency Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	11,472	12,720
U.S. Government And Agency Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	11,472	12,720
Municipal Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	57,772	62,985
Municipal Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	57,772	62,985
Trust Preferred Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	5,817	5,461
Trust Preferred Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	5,817	5,461
Agency Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	50,937	61,284
Agency Mortgage-Backed Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	50,937	61,284
Private-Label Mortgage-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	946	1,104
Private-Label Mortgage-Backed Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	946	1,104
Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	27	31
Asset-Backed Securities [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	$ 27	$ 31

Fair Value Measurements And 103

Fair Value Measurements And Fair Values Of Financial Instruments (Schedule Of Fair Value On A Nonrecurring Basis) (Details) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		$ 90	$ 2,607
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		90	2,607
Premises Held-For-Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	[1]		200
Premises Held-For-Sale [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	[1]		200
Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	[1]	90	2,407
Other Real Estate Owned [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	[1]	$ 90	$ 2,407
[1]	Includes assets directly charged-down to fair value during the year-to-date period.

Fair Value Measurements And 104

Fair Value Measurements And Fair Values Of Financial Instruments (Fair Value Inputs, Assets, Quantitative Information) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		$ 90	$ 2,607
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring		90	2,607
Premises Held-For-Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	[1]		200
Premises Held-For-Sale [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	[1]		$ 200
Premises Held-For-Sale [Member] | Level 3 [Member] | Qualitative Adjustment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate			5.00%
Premises Held-For-Sale [Member] | Level 3 [Member] | Weighted Average [Member] | Qualitative Adjustment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate			5.00%
Other Real Estate Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	[1]	90	$ 2,407
Other Real Estate Owned [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Nonrecurring	[1]	$ 90	$ 2,407
Other Real Estate Owned [Member] | Level 3 [Member] | Cost To Sell [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate		8.00%	8.00%
Other Real Estate Owned [Member] | Level 3 [Member] | Weighted Average [Member] | Cost To Sell [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Inputs, Discount Rate		8.00%	8.00%
[1]	Includes assets directly charged-down to fair value during the year-to-date period.

Parent Company (Franklin Fin105

Parent Company (Franklin Financial Services Corporation) Financial Information (Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 58,603	$ 36,665	$ 39,166	$ 48,593
Other assets	6,930	5,506
Total assets	1,179,813	1,127,443
Other Liabilities	17,488	4,560
Total liabilities	1,064,669	1,010,950
Shareholders' equity	115,144	116,493	111,376	103,521
Total liabilities and shareholders' equity	1,179,813	1,127,443
Franklin Financial Services Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	250	851	$ 300	$ 414
Investment securities	365
Equity investment in subsidiaries	114,387	115,794
Other assets	184	39
Total assets	115,186	116,684
Other Liabilities	42	191
Total liabilities	42	191
Shareholders' equity	115,144	116,493
Total liabilities and shareholders' equity	$ 115,186	$ 116,684

Parent Company (Franklin Fin106

Parent Company (Franklin Financial Services Corporation) Financial Information (Statements Of Income) (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2017		Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Other income										$ 221	$ 246	$ 390
Income before federal income tax expense	$ (6,215)		$ 3,850	$ 4,292	$ 3,813	$ 1,827	$ 2,458	$ 1,691	$ 3,411	5,741	9,389	12,475
Income tax benefit	(1,048)	[1]	(774)	(950)	(793)	(104)	(383)	(130)	(685)	(3,565)	(1,302)	(2,271)
Net income	$ (7,263)		$ 3,076	$ 3,342	$ 3,020	$ 1,723	$ 2,075	$ 1,561	$ 2,726	2,176	8,087	10,204
Franklin Financial Services Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
Dividends from Bank subsidiary										3,225	4,006	300
Other income												171
Income										3,225	4,006	471
Operating expenses										1,107	972	986
Income before federal income tax expense										2,118	3,034	(515)
Income tax benefit										348	301	328
Equity in undistributed income of subsidiaries										(290)	4,752	10,391
Net income										$ 2,176	$ 8,087	$ 10,204
[1]	Includes $2.3 million for revaluation of the net deferred tax assets

Parent Company (Franklin Fin107

Parent Company (Franklin Financial Services Corporation) Financial Information (Statements Of Comprehensive Income) (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Net income		$ (7,263)	$ 3,076	$ 3,342	$ 3,020	$ 1,723	$ 2,075	$ 1,561	$ 2,726	$ 2,176	$ 8,087	$ 10,204
Securities:
Unrealized gains arising during the period	[1]									177	(1,176)	(498)
Reclassification adjustment for net (gains) losses included in net income	[1]									(3)	18	(716)
Net unrealized gains (losses)	[1]									174	(1,158)	(1,214)
Tax effect	[1]									(60)	394	413
Net of tax amount	[1]									114	(764)	(801)
Total other comprehensive loss										(821)	(493)	(622)
Franklin Financial Services Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
Net income										2,176	8,087	10,204
Securities:
Unrealized gains arising during the period										201
Reclassification adjustment for net (gains) losses included in net income
Net unrealized gains (losses)										201
Tax effect										(68)
Net of tax amount										133
Total other comprehensive loss										133
Other comprehensive (loss) income of subsidiaries										(954)	(493)	(622)
Total Comprehensive Income										$ 1,355	$ 7,594	$ 9,582
[1]	Securities / securities (gains) losses and OTTI losses, net $1, ($6), and $243 for years ended December 31, 2017, 2016, and 2015, respectively.

Parent Company (Franklin Fin108

Parent Company (Franklin Financial Services Corporation) Financial Information (Statements Of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Net income	$ (7,263)	$ 3,076	$ 3,342	$ 3,020	$ 1,723	$ 2,075	$ 1,561	$ 2,726	$ 2,176	$ 8,087	$ 10,204
Adjustments to reconcile net income to net cash provided by operating activities:
Stock option compensation									161	88	74
Deferred tax benefit									(831)	(832)	(111)
Net cash provided by operating activities									16,252	14,856	13,290
Dividends paid									(4,031)	(3,523)	(3,139)
Cash received from option exercises									175	82	92
Common stock issued under dividend reinvestment plan									991	1,671	1,246
Treasury stock purchase										(795)
Net cash provided by financing activities									37,926	85,313	26,451
(Decrease) increase in cash and cash equivalents									21,938	(2,501)	(9,427)
Cash and cash equivalents as of January 1				36,665				39,166	36,665	39,166	48,593
Cash and cash equivalents as of December 31	58,603				36,665				58,603	36,665	39,166
Franklin Financial Services Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
Net income									2,176	8,087	10,204
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed loss (income) of subsidiary									(290)	4,752	10,391
Stock option compensation									161	88	74
Deferred tax benefit									(26)
(Increase) decrease in other assets/liabilities									(337)	(307)	1,800
Net cash provided by operating activities									2,264	3,116	1,687
Dividends paid									(4,031)	(3,523)	(3,139)
Cash received from option exercises									175	82	92
Common stock issued under dividend reinvestment plan									991	1,671	1,246
Treasury stock purchase										(795)
Net cash provided by financing activities									(2,865)	(2,565)	(1,801)
(Decrease) increase in cash and cash equivalents									(601)	551	(114)
Cash and cash equivalents as of January 1				$ 851				$ 300	851	300	414
Cash and cash equivalents as of December 31	$ 250				$ 851				$ 250	$ 851	$ 300

Quarterly Results Of Operati109

Quarterly Results Of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2017		Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Results Of Operations [Abstract]
Interest Income	$ 10,339		$ 10,063	$ 9,938	$ 9,546	$ 9,544	$ 9,348	$ 8,988	$ 9,098	$ 39,885	$ 36,979	$ 34,615
Interest Expense	691		629	590	581	589	563	548	545	2,491	2,245	2,371
Net interest income	9,648		9,434	9,348	8,965	8,955	8,785	8,440	8,553	37,394	34,734	32,244
Provision for loan losses	250		250	50	120	450	1,150	1,875	300	670	3,775	1,285
Other noninterest income	3,137		2,970	3,155	2,923	2,984	2,813	2,854	2,981	12,189	11,605	12,652
Securities (losses) gains			1		2	8	(10)	2	(28)	3	22	8
Noninterest expense	18,750	[1]	8,305	8,161	7,957	9,670	7,980	7,730	7,795	43,172	33,175	31,136
Income before income taxes	(6,215)		3,850	4,292	3,813	1,827	2,458	1,691	3,411	5,741	9,389	12,475
Federal income tax expense	1,048	[2]	774	950	793	104	383	130	685	3,565	1,302	2,271
Net income	$ (7,263)		$ 3,076	$ 3,342	$ 3,020	$ 1,723	$ 2,075	$ 1,561	$ 2,726	$ 2,176	$ 8,087	$ 10,204
Basic earnings per share	$ (1.67)		$ 0.71	$ 0.77	$ 0.70	$ 0.40	$ 0.48	$ 0.36	$ 0.64	$ 0.50	$ 1.88	$ 2.40
Diluted earnings per share	(1.67)		0.70	0.77	0.70	0.40	0.48	0.36	0.64	0.50	1.88	2.40
Dividend declared per share	$ 0.24		$ 0.24	$ 0.24	$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.19	$ 0.93	$ 0.82	$ 0.74
Accrued settlement payment	$ 10,000									$ 10,000
Revaluation of deferred tax assets										$ 2,291
[1]	Includes $10 million for the accrual of a legal settlement described in Item 3 Legal Proceedings
[2]	Includes $2.3 million for revaluation of the net deferred tax assets