Amendment Flag Current Fiscal Year End Date Document Period End Date Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Registrant Name Entity Central Index Key Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Document Type Award Type [Axis] Number of securities owned with fair value less than cost Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Amortization and accretion of investment securities Accretion (Amortization) of Discounts and Premiums, Investments Accrued interest payable Accrued Liabilities, Fair Value Disclosure Unrealized Gains (Loss) on Available for Sale Securities [Member] Accumulated Other Comprehensive Income Loss [Table] Accumulated Other Comprehensive Income Loss [Line Items] Defined Benefit Pension Items [Member] Accumulated Other Comprehensive Income [Member] Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Additional paid-in capital Adjustments to reconcile net income to net cash provided by operating activities: Roll forward of allowance for loan losses by portfolio segment Allowance for Credit Losses on Financing Receivables [Table Text Block] Amortization expense Antidilutive Securities [Axis] Antidilutive restricted stock excluded from net income per share calculations (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities, Name [Domain] Assets [Abstract] Assets, Fair Value Disclosure [Abstract] TOTAL ASSETS Assets ASSETS: ASSETS: Impaired Loans Fair Value Repurchase Agreements and Similar Transactions, Maturity Periods [Domain] Repurchase Agreements and Similar Transactions, Maturity Periods [Axis] Due after five years through ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis Total, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Available-for-sale securities Fair Value Less than Twelve Months, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Due after one year through five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Investment securities pledged as collateral Available-for-sale Securities Pledged as Collateral Gross Unrealized Gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Available for Sale Securities Amortized Cost, Gross Unrealized Gains and Losses, and Fair Value [Abstract] Twelve Months or Greater, Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Due after ten years Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Twelve Months or Greater, Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Due after one year through five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis Total, Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Gross Unrealized Losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Available-for-Sale Debt Securities, Amortized Cost [Abstract] Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] Due after ten years Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis Amortized Cost Available-for-sale Securities, Amortized Cost Basis Due after five years through ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Less than Twelve Months, Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Total Available-for-sale Debt Securities, Amortized Cost Basis Available-for-sale securities: Securities available for sale [Abstract] Realized investment gains (losses) [Abstract] Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract] Gross losses Available-for-sale Securities, Gross Realized Losses Total Available-for-sale Securities, Debt Securities Due in one year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Available-for-Sale Debt Securities, Fair Value [Abstract] Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] Net gains Available-for-sale Securities, Gross Realized Gain (Loss) Due in one year or less Gross gains Bank owned life insurance Earnings on bank owned life insurance Earnings on bank owned life insurance Counterparty Name [Axis] Carrying Amount [Member] Total cash and cash equivalents CASH AND CASH EQUIVALENTS AT END OF PERIOD CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD Cash and Cash Equivalents, at Carrying Value Noninterest-bearing Cash and Due from Banks Net (decrease) increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and due from banks Cash and Cash Equivalents, Fair Value Disclosure Cash and due from banks: Cash and Cash Equivalents [Abstract] Bank owned life insurance Cash Surrender Value, Fair Value Disclosure Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] Non-accretable discount Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table] Estimated fair value Carrying amount Accretable discount Balance at beginning of period Balance at end of period Outstanding balance Contractually required principal and interest at acquisition Accretion Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion Expected cash flows Loans acquired with specific evidence of deterioration in credit quality [Abstract] Changes in the accretable yield for purchased credit-impaired loans [Roll Forward] Interest bearing time deposits with other banks Interest bearing time deposits with other banks Other Commercial Loans [Member] Other Commercial Loans [Member] Commercial Portfolio Segment [Member] Commercial [Member] Commercial Real Estate [Member] Cash Dividends Paid (in dollars per share) Common Stock, issued (in shares) Common Stock, authorized (in shares) Common stock $1.00 par value; authorized 15,000,000 shares; issued 3,704,375 at June 30, 2016 and 3,671,751 at December 31, 2015 Common Stock, par value (in dollars per share) Employee Benefit Plans [Abstract] Employee Benefit Plans Compensation and Employee Benefit Plans [Text Block] Accumulated Comprehensive Income Comprehensive Income (Loss) Note [Text Block] Comprehensive income Comprehensive Income (Loss), Net of Tax, Attributable to Parent Consumer [Member] Core Deposit Intangibles [Member] Core Deposits [Member] Corporate Obligations [Member] Corporate Debt Securities [Member] Federal Home Loan Bank Stock Cost-method Investments, Description [Text Block] Doubtful [Member] Borrowed funds Debt and Capital Lease Obligations Borrowed funds Debt Instrument, Fair Value Disclosure Deferred interest expense Deferred Compensation Arrangement with Individual, Compensation Expense Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] Deferred Compensation Plan [Member] Deferred income taxes Deferred compensation liability Employer contribution to pension plan Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year Employer contribution to 401 (k) defined contribution plan Defined Benefit Plan Disclosure [Line Items] Expected return on plan assets Defined Benefit Plan, Expected Return on Plan Assets Interest cost Net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost Obligation included in other liabilities Defined Benefit Pension Plan, Liabilities Defined Benefit Plans and Other Postretirement Benefit Plans [Domain] Defined Contribution Plan [Abstract] Service cost Continuation of Life Insurance Plan [Member] Components of net periodic benefit cost [Abstract] Defined Benefit Plan, Net Periodic Benefit Cost [Abstract] Defined Benefit Plans and Other Postretirement Benefit Plans [Axis] Deposits: Total deposits Deposits Deposits Deposits, Fair Value Disclosure Depreciation and amortization Directors [Member] Director [Member] Repurchase Agreements [Abstract] Dividends Dividend Income, Operating Basic earnings per share computation [Abstract] Diluted earnings per share computation [Abstract] Earnings per share basic and diluted [Abstract] Earnings Per Share, Basic and Diluted [Abstract] Net Income - Basic (in dollars per share) Earnings per share - basic (in dollars per share) Net Income - Diluted (in dollars per share) Earnings per share - diluted (in dollars per share) Earnings per Share Earnings Per Share [Text Block] PER COMMON SHARE DATA: Earnings per Share [Abstract] Period over which compensation cost is expected to be recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Compensation cost related to nonvested awards that has not yet been recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options Furniture and equipment Equity Component [Domain] Equity Securities in Financial Institutions [Member] Fair Value [Member] Discount to appraised value Fair Value Inputs, Comparability Adjustments Asset Class [Axis] Valuation Technique(s) Fair Value Measurements, Valuation Techniques Significant unobservable inputs used in fair value measurement process Fair Value Inputs, Assets, Quantitative Information [Table Text Block] Fair Value Inputs, Assets, Quantitative Information [Line Items] Fair Value, Hierarchy [Axis] Measurement Frequency [Axis] Fair Value Measurements [Abstract] Fair Value Inputs, Assets, Quantitative Information [Table] Measurement Basis [Axis] Asset Class [Domain] Nonrecurring [Member] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Measurement Frequency [Domain] Recurring [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value Hierarchy [Domain] Fair Value Measurements Fair Value Disclosures [Text Block] Summary of assets measured at fair value on non-recurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Fair value, assets and liabilities measured on recurring basis [Abstract] Fair Value, by Balance Sheet Grouping [Table] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair value of financial instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Fair Value Measurement [Domain] Level III [Member] Level I [Member] Level II [Member] FDIC insurance Federal home loan bank stock Federal Home Loan Bank Stock Trust Financial liabilities [Abstract] Financial assets [Abstract] Financing Receivable, Recorded Investment, Past Due [Line Items] 90 Days or Greater and Accruing Current Recorded investment of past due [Abstract] Financing Receivable, Recorded Investment, Aging [Abstract] Total Past Due Financing Receivable, Recorded Investment, Past Due Class of Financing Receivable, Type [Axis] Financing Receivable, Modifications [Line Items] Financing Receivables, Period Past Due [Axis] 90 Days Or Greater [Member] Recoveries Financing Receivable, Allowance for Credit Losses, Recovery 60 to 89 Days Past Due [Member] Individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Financing Receivable, Allowance for Credit Losses [Line Items] Charge-offs Financing Receivable, Allowance for Credit Losses, Write-downs Financing Receivable, Recorded Investment [Line Items] Financing Receivable, Allowance for Credit Losses [Roll Forward] Financing receivable nonaccrual status Financing Receivable, Recorded Investment, Nonaccrual Status Financing Receivable Portfolio Segment [Axis] Number of contract, subsequently defaults Financing Receivable, Modifications, Subsequent Default, Number of Contracts Collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment Pre-modification Outstanding Recorded Investment Financing Receivable, Modifications, Pre-Modification Recorded Investment Summary of financing receivable credit exposures by internally assigned grades Financing Receivable Credit Quality Indicators [Table Text Block] Financing Receivables, Period Past Due [Domain] Summary of allowance for loan losses into amount required for loans individually evaluated for impairment and the amount required for loans collectively evaluated for impairment [Abstract] Financing Receivable, Impaired [Line Items] Post-Modification Outstanding Recorded Investment Financing Receivable, Modifications, Post-Modification Recorded Investment Total Balance at beginning of period Balance at end of period Financing Receivable, Allowance for Credit Losses Number of contracts Financing Receivable, Modifications, Number of Contracts Class of Financing Receivable, Type [Domain] Collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Individually evaluated for impairment Financing Receivable, Individually Evaluated for Impairment Financing Receivable Portfolio Segment [Domain] 30 to 59 Days Past Due [Member] Finite-Lived Intangible Assets by Major Class [Axis] 2017 Net carrying value Finite-Lived Intangible Assets, Net Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Actual and Estimated Future Amortization Expense [Abstract] Finite-Lived Intangible Assets [Line Items] Gross carrying value Finite-Lived Intangible Assets, Gross Remaining 2016 Finite-Lived Intangible Assets, Major Class Name [Domain] Amortized intangible assets [Abstract] 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Five Estimated Amortization Expense [Abstract] 2019 2018 First Mortgage [Member] Other real estate owned Repossessed Assets Investment securities gains, net Investment securities gains, net Investment securities gains, net Gains on loans sold Realized gains on loans sold Goodwill Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Goodwill and Other Intangible Assets [Abstract] Home Equity [Member] Home Equity [Member] Impaired financing receivables with associated allowance amount Recorded Investment With Allowance Recorded Investment With No Allowance Interest Income Recognized Impaired Financing Receivable, Interest Income, Accrual Method Unpaid Principal Balance Average Recorded Investment Impaired Financing Receivable, Average Recorded Investment Related Allowance Total Recorded Investment Impaired Financing Receivable, Recorded Investment Interest Income Recognized Cash Basis Impaired Financing Receivable, Interest Income, Cash Basis Method Income Tax Expense [Abstract] Income before provision for income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Income Tax Expense Income Tax Disclosure [Text Block] Provision for income taxes Provision for income taxes CONSOLIDATED STATEMENT OF INCOME (UNAUDITED) [Abstract] Income taxes paid Increase in accrued interest receivable Increase (Decrease) in Accrued Interest Receivable, Net Decrease in accrued interest payable Net increase in deposits Increase (Decrease) in Deposits Add: Dilutive effects of restricted stock (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Other intangibles INTEREST EXPENSE: Interest and fees on loans INTEREST INCOME: TOTAL INTEREST INCOME Interest and Dividend Income, Operating TOTAL INTEREST EXPENSE Interest Expense Investment securities: Accrued interest payable Borrowed funds Interest Expense, Borrowings Deposits Interest Expense, Deposits Interest-bearing deposits with banks NET INTEREST INCOME Interest Income (Expense), Net NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES Interest Income (Expense), after Provision for Loan Loss Taxable Interest paid Nontaxable Interest-bearing Accrued interest receivable Interest Receivable Interest-bearing Interest-bearing Deposits in Banks and Other Financial Institutions Internal Credit Assessment [Domain] Internal Credit Assessment [Axis] Brokerage and insurance Investment Banking, Advisory, Brokerage, and Underwriting Fees and Commissions Regulatory stock Investment in Federal Home Loan Bank Stock, Fair Value Disclosure Investment Tax Credit Carryforward [Member] Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Federal Home Loan Bank Stock [Abstract] Investments [Abstract] Summary of amortized cost and fair value of debt securities by contractual maturity Salaries and employee benefits Salaries and employee benefits TOTAL LIABILITIES Liabilities LIABILITIES: TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities and Equity Financing Receivable, Troubled Debt Restructuring [Domain] Financing Receivable, Troubled Debt Restructuring [Axis] Loans, allowance for loan losses Allowance for loan losses Loans (net of allowance for loan losses: 2016, $7,359 and 2015, $7,106) Net loans Total financing receivables Loans and Leases Receivable, Gross Loans held for sale Loans Held-for-sale, Fair Value Disclosure Net loans Loans Receivable, Fair Value Disclosure Loans held for sale Loans Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Greater than 90 Days [Member] Up to 30 Days [Member] 30 - 90 Days [Member] Maximum [Member] Minimum [Member] Mortgage Loans on Real Estate, Loan Category [Domain] Formal foreclosure proceedings on potential foreclosure assets Mortgage Loans in Process of Foreclosure, Amount Mortgage Loans on Real Estate, Description, Loan Category [Axis] Mortgage-backed Securities in Government Sponsored Entities [Member] Nonperforming [Member] Nonperforming Financial Instruments [Member] CASH FLOWS FROM FINANCING ACTIVITIES: Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations CASH FLOWS FROM OPERATING ACTIVITIES: Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations CASH FLOWS FROM INVESTING ACTIVITIES: Net income NET INCOME NET INCOME Net income applicable to common stock Recent Accounting Pronouncements New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Recent Accounting Pronouncements [Abstract] Covenant not to Compete [Member] Noncompete Agreements [Member] Noninterest-bearing NON-INTEREST INCOME: NON-INTEREST EXPENSES: TOTAL NON-INTEREST EXPENSES Noninterest Expense TOTAL NON-INTEREST INCOME Noninterest Income Other Noninterest Income, Other Operating Income Total Financing Receivable, Net Other comprehensive income (loss) before reclassifications (net of tax) OCI, before Reclassifications, Net of Tax, Attributable to Parent Occupancy Basis of Presentation [Abstract] Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Income tax effect Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, before Reclassification Adjustments, Tax Change in unrecognized pension cost Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax Less: Reclassification adjustment for investment security gains included in net income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Income tax effect Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Other, net Other assets Income tax effect Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Unrealized gains on available for sale securities Investment amount in partnerships Other liabilities Other Foreclosed assets held for sale [Abstract] Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract] Foreclosed assets held for sale Other comprehensive income (loss): Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Performing [Member] Performing Financial Instruments [Member] Aging analysis of past due financing receivables Pass [Member] Purchase of regulatory stock Payments to Acquire Federal Home Loan Bank Stock Originations of loans held for sale Payments for Origination of Mortgage Loans Held-for-sale Net increase in loans Payments for (Proceeds from) Loans and Leases Purchase of securities Payments to Acquire Available-for-sale Securities Purchase of treasury and restricted stock Payments for Repurchase of Common Stock Dividends paid Payments of Ordinary Dividends, Common Stock Purchase of premises and equipment Payments to Acquire Productive Assets Pension Plan [Member] Portion at Fair Value Measurement [Member] Preferred Stock, issued (in shares) Preferred Stock, Shares Issued Preferred Stock, authorized (in shares) Preferred Stock, Shares Authorized Preferred Stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred Stock $1.00 par value; authorized 3,000,000 shares June 30, 2016 and December 31, 2015; none issued in 2016 or 2015 Net increase in short-term borrowed funds Proceeds from redemption of regulatory stock Proceeds from Sale of Federal Home Loan Bank Stock Proceeds from matured interest bearing time deposits with other banks Proceeds from maturity and principal repayments Proceeds from long-term borrowings Proceeds from sales of loans held for sale Proceeds from sales Proceeds from sale of securities available-for-sale Proceeds from sale of foreclosed assets held for sale Professional fees Premises and equipment Provision for loan losses Provision Range [Axis] Range [Domain] Gross gains and losses on available-for-sale securities Loans [Abstract] Amounts reclassified from accumulated other comprehensive income (loss) (net of tax) Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Member] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Axis] Schedule of the significant amounts reclassified out of each component of accumulated other comprehensive income Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Repayments of long-term borrowings Repayments of Long-term Debt Repurchase Agreements Counterparty Name [Domain] Mortgages [Member] Residential Mortgage [Member] Residential Real Estate Loans [Member] Residential Portfolio Segment [Member] Restricted Stock [Member] Retained earnings Service charges Substandard [Member] Schedule of future amortization expense for amortized intangible assets Schedule of Financing Receivable, Allowance for Credit Losses [Table] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table] Summary of financing receivables on nonaccrual status Schedule of Financing Receivables, Non Accrual Status [Table Text Block] Schedule of Financing Receivable, Troubled Debt Restructurings [Table] Schedule of gross carrying value and accumulated amortization of intangible assets Schedule of restricted stock activity Schedule of Financing Receivables Past Due [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Computation of earnings per share Summary of assets measured at fair value on a recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Components of net periodic benefit costs Schedule of Net Benefit Costs [Table Text Block] Summary of amortized cost, gross unrealized gains and losses, and fair value of investment securities Schedule of Impaired Financing Receivable [Table] Unrealized losses and fair value of investments Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Line Items] Schedule of Deferred Compensation Arrangement with Individual, Postretirement Benefits [Table] Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Remaining contractual maturity of the repurchase agreements Schedule of Repurchase Agreements [Table Text Block] Second Mortgage [Member] Total carrying value of collateral pledged Securities Sold under Agreements to Repurchase, Gross Total liability recognized for repurchase agreements Securities Sold under Agreements to Repurchase MSRs [Member] Additional General Disclosures [Abstract] Share-based compensation expense Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Weighted average market price [Roll Forward] Granted (in dollars per share) Restricted stock activity [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Outstanding, beginning of period (in dollars per share) Outstanding, end of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Outstanding, beginning of period (in shares) Outstanding, end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Number of shares authorized (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Vested (in dollars per share) Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Number of shares available for grant (in shares) Award Type [Domain] Special Mention [Member] Equity Components [Axis] CONSOLIDATED STATEMENT OF CASH FLOWS (UNAUDITED) [Abstract] CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (UNAUDITED) [Abstract] CONSOLIDATED BALANCE SHEET (UNAUDITED) [Abstract] STOCKHOLDERS' EQUITY: TOTAL STOCKHOLDERS' EQUITY Ending Balance Beginning Balance Stockholders' Equity Attributable to Parent Supplemental Executive Retirement Plans [Member] Supplemental Employee Retirement Plan [Member] Supplemental Disclosures of Cash Flow Information: Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward [Axis] Tax Credit Carryforward [Table] Investment tax credits Tax Credit Carryforward [Line Items] Relationship to Entity [Domain] Title of Individual [Axis] Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Table] Transfer of Certain Financial Assets Accounted for as Secured Borrowings [Line Items] Loans transferred to foreclosed property Treasury stock, shares (in shares) Treasury stock, at cost: 358,921 shares at June 30, 2016 and 335,876 shares at December 31, 2015 Treasury Stock, Value Summary of troubled debt restructurings on financing receivables Troubled Debt Restructurings on Financing Receivables [Table Text Block] Loss [Member] Unallocated [Member] U.S. Agency Securities [Member] Obligations of State and Political Subdivisions [Member] US States and Political Subdivisions Debt Securities [Member] U.S. Treasury Securities [Member] US Treasury Securities [Member] Valuation Technique [Axis] Valuation Technique [Domain] Weighted average common shares outstanding for dilutive earnings per share (in shares) Number of shares used in computation - diluted (in shares) Weighted Average [Member] Weighted average common shares outstanding (in shares) Weighted average common shares outstanding for basic earnings per share (in shares) Number of shares used in computation - basic (in shares) Gross Carrying Value Of Intangible Assets And Accumulated Amortization [Abstract] Recorded investment in financing receivables that are past due and still accruing. Financing Receivable Recorded Investment Total Past Due And Still Accruing Total Past Due And Still Accruing Recorded investment in financing receivables that are current and still accruing. Financing Receivable Recorded Investment Current And Still Accruing Current And Still Accruing Refers to the purchased credit impaired loans that are still accruing. Purchased Credit Impaired Loans And Still Accruing PCI Loans still accruing Recorded investment in financing receivables total that are still accruing. Financing Receivable Recorded Investment Total And Still Accruing Total Financing Receivables And Still Accruing Financing receivables on accrual status [Abstract] Refers to purchase credit impaired loans that are non accrual. Purchased Credit Impaired Loans, Non accrual PCI Loans considered non accrual Recorded investment in financing receivables that are past due and non accrual. Financing Receivable Recorded Investment Total past Due And Non Accrual Total Past Due And Non-accrual Elements refers to Purchased credit impaired (PCI) loans. Purchased Credit Impaired Loans PCI Recorded investment in financing receivables that are current and non accrual. Financing Receivable Recorded Investment Current And Non Accrual Current And Non-accrual Refers to period of past due after which loans are considered as non accrual. Period past due after which loans considered as non accrual Period of past due after which loans considered as non accrual Financing receivables on nonaccrual status [Abstract] Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. Share-based Payment Award, Fair Value Assumptions, Exercise Price Antidilutive stock share price range (in dollars per share) Available For Sale Securities Continuous Unrealized Loss Position Fair Value and unrealized losses [Abstract] Available-For-Sale Securities, Fair Value and Gross Unrealized Losses [Abstract] The minimum period of time securities fair value less than cost for classification as impaired. Duration securities impaired, Minimum Duration securities impaired, minimum Accumulated Comprehensive Income [Abstract] Amount of expense related to off balance sheet items i.e., financial assets and liabilities which are not recognized as assets and liabilities in the financial statements, includes nature of the transaction, the conditions or circumstances under which the entity's contractual rights or obligation may be realized, the term of the contractual rights, commitment, or obligation, and other such information to allow a user of the information to fully understand the entity's off-balance sheet asset (benefit) or liability (risk) transactions. Provision For Off Balance Sheet Items Provision for off-balance sheet items Represents investments purchased and not settled included in other assets. Investments Purchased And Not Settled Investments purchased and not settled Refers to other real estate expenses. ORE expenses The aggregate expense charged against earnings to allocate the cost of intangible assets (Core deposits and Non Compete) (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Amortization of Intangible Assets Core Deposits and Non Compete Amortization of other intangibles Tax imposed by the Commonwealth of Pennsylvania on the book value of capital stock. Pennsylvania Shares tax Pennsylvania shares tax Impaired Financing Receivable [Abstract] Impaired Financing Receivable [Abstract] Maturity period of the day after the reporting date for repurchase agreements and similar transactions, for example, but not limited to, securities lending arrangements. Maturity Overnight and Continuous [Member] Overnight and Continuous [Member] Tabular disclosure of loans acquired with specific evidence of deterioration in credit quality. Loans Acquired With Specific Evidence Of Deterioration In Credit Quality [Table Text Block] Loans acquired with specific evidence of deterioration in credit quality Tabular disclosure of allowance for credit losses individually evaluated for impairment and collectively evaluated for impairment. Schedule of allowance for loan losses [Table Text Block] Allowance for loan losses by impairment method Tabular disclosure of loan portfolio evaluated with individually and collectively impairment and the allowance for loan losses. Schedule of loan portfolio and allowance for loan losses [Table Text Block] Summary of loan portfolio and allowance for loan losses Tabular disclosure of accretable yield for purchased credit impaired loans. Accretable Yield For Purchased Credit Impaired Loans [Table Text Block] Accretable yield for purchased credit impaired loans Represents amount over which all relationships to be reviewed for all internal and external loan on aggregate basis to ensure the appropriateness of the loan grade. Amount over which all relationship to be reviewed Amount over which all relationships to be reviewed Represents amount to be reviewed for all internal and external loan all aggregate loan relationships which are over 30 days past due to ensure the appropriateness of the loan grade. Amount which is 30 days past due to be reviewed for all aggregate loan relationships Portfolio segment of the entity's total financing receivables related to state and political subdivision loans. State and political subdivision loans [Member] State and Political Subdivision Loans [Member] Class of financing receivables related to agricultural real estate loans. Agricultural [Member] Agricultural [Member] Refers to percentage of dollar volume of commercial loan portfolio to be reviewed on annual basis . Percentage of commercial loan portfolio to be reviewed Percentage of dollar volume of commercial loan portfolio to be reviewed Represents purchased credit impaired loan. Purchased Credit Impaired Loan [Member] PCI [Member] Credit quality indicators that are developed and used internally by the company. Internally Assigned Grade 1 [Member] Internally Assigned Grade [Member] Class of financing receivables related to agricultural loans excluding real estate. Other agricultural loans [Member] Other Agricultural Loans [Member] Portfolio segment of the company's total financing receivables related to construction real estate loans. Construction Real Estate Loans [Member] Construction [Member] Construction Real Estate Loans [Member] Financing Receivable by credit exposure [Abstract] Represents amount over which all new loans to be reviewed for all internal and external loan on aggregate basis to ensure the appropriateness of the loan grade. Amount over which all new loans to be reviewed Amount of allowance for credit losses related to recorded investment in financing receivable categorized as troubled debt restructuring. Troubled debt Financing Receivable Related Allowance Reserves of allowance for loan losses Represents information about consumer residential mortgages. Consumer Residential Mortgages [Member] Portfolio segment of the entity's total financing receivables related to real estate loans. Real estate loans [Member] Real Estate Loans [Member] Real estate portfolio segment of the entity related to term modification. Term Modification [Member] Real estate portfolio segment of the entity related to interest modification. Interest Modification [Member] Financing Receivable Modifications [Abstract] Financing receivable modifications [Abstract] This elements represents face amount of Federal Home Loan Bank Stock per share, generally not indicative of the fair market value per share. Federal Home Loan Bank Stock Par value FHLB Stock, at par value (in dollars per share) Indefinite Lived Intangible Assets Net [Abstract] Unamortized intangible assets [Abstract] Fair Value Assets And Liabilities Measured On NonRecurring Basis [Abstract] Fair value assets and liabilities measured on non-recurring basis [Abstract] Refers to the estimated selling cost of impaired loans excluded from calculation of fair value. Impaired loans Estimated Selling Cost Impaired loans, estimated selling cost This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents corporate obligations issued debt securities. Corporate obligations Fair Value Disclosure Corporate obligations This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents equity securities in financial institutions as of the balance sheet date when have been categorized as available-for-sale. Equity securities in financial institutions fair value disclosure Equity securities in financial institutions This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents bonds or similar securities issued by state, city, province, or local governments or their agencies in either the United States or a foreign country. Debt securities issued by state governments or provinces may include bond issuances of US state or foreign authorities. Debt securities issued by political subdivisions or US states may include debt issuances by county, borough, city, or municipal governments. Obligations of state and political subdivisions fair value disclosure Obligations of state and political subdivisions This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents U.S. treasury issued debt securities. U.S. treasuries securities Fair Value Disclosure U.S. Treasuries securities This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents U.S. agency issued debt securities. U.S. agency securities Fair Value Disclosure U.S. Agency securities This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents mortgage backed securities in government sponsored entities as of the balance sheet date when have been categorized as available-for-sale. Mortgage-backed securities in government sponsored entities fair value disclosure Mortgage-backed securities in government sponsored entities Refers to amount as of the balance sheet date of all assets obtained in full or partial satisfaction of a debt arrangement through foreclosure proceedings or defeasance; includes real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts. Other real estate owned [Member] Other Real Estate Owned [Member] Refers to impaired loans, which may include mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts, or any other loans which are due the as of the balance sheet date. Impaired Loans [Member] Holding period, used as an input to measure fair value. Fair Value Inputs Holding period Holding period Appraised collateral values valuation technique used to measure fair value. Appraised Collateral Values [Member] Discounted cash flows valuation technique used to measure fair value. Discounted Cash Flows [Member] Percentage of selling costs, used as an input to measure fair value. Fair Value Inputs Selling costs Selling costs Refers to period of mortgage on residential real estate. Period of mortgage on real estate Period of mortgage on real estate The maximum number of days past due before a loan is classified as impaired. Number of Days Past Due For Loan to be Considered Impaired, Maximum Number of days past for loan to be considered impaired, Minimum Segments of loan portfolio and allowance for loan losses [Abstract] The balance of financing receivables that were acquired with deteriorated credit quality. Financing Receivable, Loans Acquired With Deteriorated Credit Quality Loans acquired with deteriorated credit quality Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale. Related to Loans acquired with deteriorated credit quality. Loans And Leases Receivable Net Reported Amount Related To Loans Acquired With Deteriorated Credit Quality Net loans, loans acquired with deteriorated credit quality Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale. Related to Collectively evaluated for impairment. Loans And Leases Receivable Net Reported Amount Related To Collectively evaluated for impairment Net loans, collectively evaluated for impairment Refers to the acquiree entity name. First National Bank of Fredericksburg [Member] First National Bank of Fredericksburg [Member] Portfolio segment of the entity's total financing receivables related to commercial receivables including other agricultural loans, excluding real estate loans. Commercial other loans and other Agricultural Loans [Member] Other Commercial and Agricultural Loans [Member] Element refers to the unpaid principle balance of acquired loans with evidence of deterioration of credit quality. Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Loans Unpaid Principal Balance Unpaid principal balance amount Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements, related to Individually evaluated for impairment. Loans and Leases Receivable, Allowance Related to Individually Evaluated For Impairment Allowance for loan losses related to individually evaluated for impairment Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements, related to Individually evaluated for impairment, related to Collectively evaluated for impairment. Loans and Leases Receivable, Allowance Related to Collectively evaluated for impairment Allowance for loan losses related to collectively evaluated for impairment Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements, related to loans acquired with deteriorated credit quality. Loans and Leases Receivable, Allowance Related to Loans Acquired With Deteriorated Credit Quality Allowance for loan losses related to loans acquired with deteriorated credit quality Refers to Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale. Related to Individually evaluated for impairment. Loans And Leases Receivable Net Reported Amount Related To Individually evaluated for impairment Net loans, individually evaluated for impairment Portfolio segment of the company's total financing receivables related to commercial and agricultural real estate loans. Commercial and Agricultural Real Estate Loans [Member] Commercial and Agricultural Real Estate Loans [Member] Document and Entity Information [Abstract] Refers to consideration period for recognition of cash and due from banks. Consideration period for recognition of cash and due from banks Consideration period for recognition of cash and due from banks Refers to consideration period for recognition of accrued interest receivable and payable. Consideration period for recognition of accrued interest receivable and payable Consideration period for recognition of accrued interest receivable and payable Fair amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable. Interest Receivable Fair Value Disclosure Accrued interest receivable Represents the number of investments in partnerships as of the Balance Sheet date. Number of Investments in Partnerships Investments in number of partnerships The term over which tax credits will be recognized. Tax Credits Recognition term Tax credits recognition period The amount of recognized income tax credits during the period. Recognized Income Tax Credits Tax credits recognized as reduction of tax expense amount Refers to the number of plans during the period. Number Of Plans Number of plans Refers to the plan designed to provide participants with a salary benefit. Excludes other postretirement benefit plans. Salary Continuation Plan [Member] This represents the amount of expense recognized during the period, that is associated with the defined benefit pension plans. Defined Benefit Plan, Cost Recognized Cost recognized The net amortization and deferral expenses. The net amortization and deferral component is a portion of the benefit obligation and is unaffected by the funded status of the plan. Defined Benefit Plan Net amortization and deferral Net amortization and deferral Defined Benefit Plans Other Disclosure [Abstract]