$FXNC
FIRST NATIONAL CORP /VA/ Stock $fxnc

$fxnc Overview Financials Valuation SEC Filings Company Website

2016 Q4 Form 10-K Financial Statement

#000071940218000007 Filed on March 23, 2018

Income Statement

Concept	2016 Q4	2016	2015 Q4
Revenue		$25.24M
YoY Change		13.86%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$530.0K	$1.400M	$540.0K
YoY Change	-1.85%	16.67%	125.0%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense		$1.982M
YoY Change		37.54%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$2.410M	$8.260M	$1.280M
YoY Change	88.28%	128.75%	-76.85%
Income Tax	$720.0K	$2.353M	$340.0K
% Of Pretax Income	29.88%	28.49%	26.56%
Net Earnings	$1.680M	$5.907M	$940.0K
YoY Change	78.72%	122.49%	-74.59%
Net Earnings / Revenue		23.41%
Basic Earnings Per Share		$1.20
Diluted Earnings Per Share	$340.8K	$1.20	$191.1K
COMMON SHARES
Basic Shares Outstanding	4.927M shares	4.925M shares	4.913M shares
Diluted Shares Outstanding		4.928M shares

Balance Sheet

Concept	2016 Q4	2016	2015 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$41.09M		$39.33M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$20.79M	$20.80M	$21.39M
YoY Change	-2.82%	-2.8%	32.64%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$716.0M	$716.0M	$692.3M
YoY Change	3.42%	3.42%	33.61%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$4.100M	$4.100M	$5.100M
YoY Change	-19.61%	-19.61%	4.08%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt			$0.00
YoY Change			-100.0%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$4.100M	$4.100M	$5.100M
YoY Change	-19.61%	-19.61%	4.08%
LONG-TERM LIABILITIES
Long-Term Debt	$14.20M	$14.20M	$14.20M
YoY Change	0.0%	0.0%	52.69%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$14.20M	$14.20M	$14.20M
YoY Change	0.0%	0.0%	52.69%
TOTAL LIABILITIES
Total Short-Term Liabilities	$4.100M	$4.100M	$5.100M
Total Long-Term Liabilities	$14.20M	$14.20M	$14.20M
Total Liabilities	$663.8M	$663.8M	$646.4M
YoY Change	2.7%	2.69%	40.94%
SHAREHOLDERS EQUITY
Retained Earnings	$39.76M		$34.44M
YoY Change	15.44%		2.63%
Common Stock	$6.162M		$6.145M
YoY Change	0.28%		0.23%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$52.15M	$52.20M	$45.95M
YoY Change
Total Liabilities & Shareholders Equity	$716.0M	$716.0M	$692.3M
YoY Change	3.42%	3.42%	33.61%

Cashflow Statement

Concept	2016 Q4	2016	2015 Q4
OPERATING ACTIVITIES
Net Income	$1.680M	$5.907M	$940.0K
YoY Change	78.72%	122.49%	-74.59%
Depreciation, Depletion And Amortization	$530.0K	$1.400M	$540.0K
YoY Change	-1.85%	16.67%	125.0%
Cash From Operating Activities	$2.870M	$9.009M	$1.280M
YoY Change	124.22%	95.85%	-35.35%
INVESTING ACTIVITIES
Capital Expenditures	-$280.0K	-$1.030M	-$230.0K
YoY Change	21.74%	-48.5%	4.55%
Acquisitions
YoY Change
Other Investing Activities	-$23.08M	-$24.29M	-$42.07M
YoY Change	-45.14%	-189.37%	-325.82%
Cash From Investing Activities	-$23.36M	-$25.32M	-$42.30M
YoY Change	-44.78%	-200.56%	-329.52%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	4.720M	$18.07M	3.500M
YoY Change	34.86%	-218.11%	-155.56%
NET CHANGE
Cash From Operating Activities	2.870M	$9.009M	1.280M
Cash From Investing Activities	-23.36M	-$25.32M	-42.30M
Cash From Financing Activities	4.720M	$18.07M	3.500M
Net Change In Cash	-15.77M	$1.758M	-37.52M
YoY Change	-57.97%	-87.86%	-365.91%
FREE CASH FLOW
Cash From Operating Activities	$2.870M	$9.009M	$1.280M
Capital Expenditures	-$280.0K	-$1.030M	-$230.0K
Free Cash Flow	$3.150M	$10.04M	$1.510M
YoY Change	108.61%	52.11%	-31.36%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2017	dei	Amendment Flag AmendmentFlag	false
CY2017	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2017	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2017	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2017
CY2017	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2017	dei	Entity Filer Category EntityFilerCategory	Smaller Reporting Company
CY2018Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	4952575	shares
CY2017	dei	Document Period End Date DocumentPeriodEndDate	2017-12-31
CY2017	dei	Document Type DocumentType	10-K
CY2017	dei	Entity Central Index Key EntityCentralIndexKey	0000719402
CY2017Q2	dei	Entity Public Float EntityPublicFloat	59937677	USD
CY2017	dei	Entity Registrant Name EntityRegistrantName	FIRST NATIONAL CORP /VA/
CY2017	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2017	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2017	dei	Trading Symbol TradingSymbol	FXNC
CY2017Q4	fxnc	Access Deposit In Other Commercial Banks AccessDepositInOtherCommercialBanks	11000	USD
CY2016	fxnc	Accretion Amortization Of Discounts And Premium On Time Deposits AccretionAmortizationOfDiscountsAndPremiumOnTimeDeposits	-167000	USD
CY2017	fxnc	Accretion Amortization Of Discounts And Premium On Time Deposits AccretionAmortizationOfDiscountsAndPremiumOnTimeDeposits	-104000	USD
CY2017Q4	fxnc	Aggregate Amount Of Unrestricted Funds Transferred From Bank AggregateAmountOfUnrestrictedFundsTransferredFromBank	4500000	USD
CY2017Q4	fxnc	Amount Of Locked Rate Commitments For Loans Held For Sale AmountOfLockedRateCommitmentsForLoansHeldForSale	438000	USD
CY2017Q4	fxnc	Amount Of Locked Rate Commitments For Mortgage Loans AmountOfLockedRateCommitmentsForMortgageLoans	2800000	USD
CY2016	fxnc	Atm And Check Card Fees AtmAndCheckCardFees	2037000	USD
CY2017	fxnc	Atm And Check Card Fees AtmAndCheckCardFees	2140000	USD
CY2016	fxnc	Atm And Check Card Fees Expenses AtmAndCheckCardFeesExpenses	866000	USD
CY2017	fxnc	Atm And Check Card Fees Expenses AtmAndCheckCardFeesExpenses	805000	USD
CY2016Q4	fxnc	Available For Sale And Held To Maturity Securities Accumulated Gross Unrealized Loss AvailableForSaleAndHeldToMaturitySecuritiesAccumulatedGrossUnrealizedLoss	2345000	USD
CY2017Q4	fxnc	Available For Sale And Held To Maturity Securities Accumulated Gross Unrealized Loss AvailableForSaleAndHeldToMaturitySecuritiesAccumulatedGrossUnrealizedLoss	2088000	USD
CY2016Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Accumulated Gross Unrealized Gain AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesAccumulatedGrossUnrealizedGain	352000	USD
CY2017Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Accumulated Gross Unrealized Gain AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesAccumulatedGrossUnrealizedGain	243000	USD
CY2016Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Amortized Cost AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesAmortizedCost	149504000	USD
CY2017Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Amortized Cost AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesAmortizedCost	138802000	USD
CY2016Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	2345000	USD
CY2017Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	2088000	USD
CY2016Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	120552000	USD
CY2017Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	105242000	USD
CY2016Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Accumulated Loss AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAccumulatedLoss	2137000	USD
CY2017Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Accumulated Loss AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsAccumulatedLoss	589000	USD
CY2016Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	115053000	USD
CY2017Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	59622000	USD
CY2016Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Accumulated Loss AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerAccumulatedLoss	208000	USD
CY2017Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Accumulated Loss AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerAccumulatedLoss	1499000	USD
CY2016Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	5499000	USD
CY2017Q4	fxnc	Available For Sale Securities And Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	45620000	USD
CY2016	fxnc	Availableforsale Securities Number Of Securities Donated To Notforprofit Organization AvailableforsaleSecuritiesNumberOfSecuritiesDonatedToNotforprofitOrganization	0	Security
CY2017	fxnc	Availableforsale Securities Number Of Securities Donated To Notforprofit Organization AvailableforsaleSecuritiesNumberOfSecuritiesDonatedToNotforprofitOrganization	1	Security
CY2016	fxnc	Bank Franchise Tax BankFranchiseTax	372000	USD
CY2017	fxnc	Bank Franchise Tax BankFranchiseTax	436000	USD
CY2016Q4	fxnc	Brokered Deposits BrokeredDeposits	601000	USD
CY2017Q4	fxnc	Brokered Deposits BrokeredDeposits	550000	USD
CY2016Q4	fxnc	Capital Conservation Buffer Percentage CapitalConservationBufferPercentage	0.00625
CY2017Q4	fxnc	Capital Conservation Buffer Percentage CapitalConservationBufferPercentage	0.0125
CY2016Q1	fxnc	Capital Conservation Buffer Percentage CapitalConservationBufferPercentage	0.00625
CY2017Q1	fxnc	Capital Conservation Buffer Percentage CapitalConservationBufferPercentage	0.00625
CY2016Q4	fxnc	Capital Conservation Buffer Percentage Maintained At Bank CapitalConservationBufferPercentageMaintainedAtBank	0.0547
CY2017Q4	fxnc	Capital Conservation Buffer Percentage Maintained At Bank CapitalConservationBufferPercentageMaintainedAtBank	0.0512
CY2017	fxnc	Capital Conservation Buffer Phase Period CapitalConservationBufferPhasePeriod	P4Y
CY2016Q4	fxnc	Common Equity Tier One Risk Based Capital CommonEquityTierOneRiskBasedCapital	60269000	USD
CY2017Q4	fxnc	Common Equity Tier One Risk Based Capital CommonEquityTierOneRiskBasedCapital	62298000	USD
CY2016Q4	fxnc	Common Equity Tier One Risk Based Capital Required For Capital Adequacy CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacy	21910000	USD
CY2017Q4	fxnc	Common Equity Tier One Risk Based Capital Required For Capital Adequacy CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacy	23197000	USD
CY2016Q4	fxnc	Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0450
CY2017Q4	fxnc	Common Equity Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0450
CY2016Q4	fxnc	Common Equity Tier One Risk Based Capital Required To Be Well Capitalized CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalized	31648000	USD
CY2017Q4	fxnc	Common Equity Tier One Risk Based Capital Required To Be Well Capitalized CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalized	33506000	USD
CY2016Q4	fxnc	Common Equity Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0650
CY2017Q4	fxnc	Common Equity Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0650
CY2016Q4	fxnc	Common Equity Tier One Risk Based Capital To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets	0.1238
CY2017Q4	fxnc	Common Equity Tier One Risk Based Capital To Risk Weighted Assets CommonEquityTierOneRiskBasedCapitalToRiskWeightedAssets	0.1209
CY2016Q4	fxnc	Community Bankers Bank Stock CommunityBankersBankStock	50000	USD
CY2017Q4	fxnc	Community Bankers Bank Stock CommunityBankersBankStock	50000	USD
CY2016Q4	fxnc	Core Deposit Intangible Net CoreDepositIntangibleNet	1551000	USD
CY2017Q4	fxnc	Core Deposit Intangible Net CoreDepositIntangibleNet	930000	USD
CY2016Q4	fxnc	Deferred Tax Assets Accrued Health Insurance DeferredTaxAssetsAccruedHealthInsurance	0	USD
CY2017Q4	fxnc	Deferred Tax Assets Accrued Health Insurance DeferredTaxAssetsAccruedHealthInsurance	11000	USD
CY2016Q4	fxnc	Deferred Tax Assets Accrued Pension Liability DeferredTaxAssetsAccruedPensionLiability	689000	USD
CY2017Q4	fxnc	Deferred Tax Assets Accrued Pension Liability DeferredTaxAssetsAccruedPensionLiability	0	USD
CY2016Q4	fxnc	Deferred Tax Assets Loan Origination Cost Net DeferredTaxAssetsLoanOriginationCostNet	48000	USD
CY2017Q4	fxnc	Deferred Tax Assets Loan Origination Cost Net DeferredTaxAssetsLoanOriginationCostNet	63000	USD
CY2016Q4	fxnc	Deferred Tax Assets Share Based Compensation Nonvested Awards Compensation Cost Not Yet Recognized DeferredTaxAssetsShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognized	19000	USD
CY2017Q4	fxnc	Deferred Tax Assets Share Based Compensation Nonvested Awards Compensation Cost Not Yet Recognized DeferredTaxAssetsShareBasedCompensationNonvestedAwardsCompensationCostNotYetRecognized	9000	USD
CY2016Q4	fxnc	Deferred Tax Liabilities Discount Accretion DeferredTaxLiabilitiesDiscountAccretion	2000	USD
CY2017Q4	fxnc	Deferred Tax Liabilities Discount Accretion DeferredTaxLiabilitiesDiscountAccretion	0	USD
CY2016Q4	fxnc	Deferred Tax Liabilities Overfunded Pension DeferredTaxLiabilitiesOverfundedPension	0	USD
CY2017Q4	fxnc	Deferred Tax Liabilities Overfunded Pension DeferredTaxLiabilitiesOverfundedPension	27000	USD
CY2017	fxnc	Defined Benefit Pension Plan Minimum Eligible Age Of Employee DefinedBenefitPensionPlanMinimumEligibleAgeOfEmployee	P21Y
CY2016Q4	fxnc	Defined Benefit Plan Accumulated Other Comprehensive Income Deferred Income Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeDeferredIncomeTax	0	USD
CY2017Q4	fxnc	Defined Benefit Plan Accumulated Other Comprehensive Income Deferred Income Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeDeferredIncomeTax	-27000	USD
CY2016	fxnc	Defined Benefit Plan Actuarial Net Gains Losses Recognized DefinedBenefitPlanActuarialNetGainsLossesRecognized	84000	USD
CY2017	fxnc	Defined Benefit Plan Actuarial Net Gains Losses Recognized DefinedBenefitPlanActuarialNetGainsLossesRecognized	0	USD
CY2016	fxnc	Defined Benefit Plan Amount Recognized In Net Periodic Benefit Cost And Other Comprehensive Income Loss DefinedBenefitPlanAmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLoss	1760000	USD
CY2017	fxnc	Defined Benefit Plan Amount Recognized In Net Periodic Benefit Cost And Other Comprehensive Income Loss DefinedBenefitPlanAmountRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncomeLoss	79000	USD
CY2016Q4	fxnc	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate After Twenty Years DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRateAfterTwentyYears	0.0430
CY2017Q4	fxnc	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate After Twenty Years DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRateAfterTwentyYears	0.0435
CY2016Q4	fxnc	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate First Five Years DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRateFirstFiveYears	0.0147
CY2017Q4	fxnc	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate First Five Years DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRateFirstFiveYears	0.0196
CY2016Q4	fxnc	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate Five Year To Twenty Years DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRateFiveYearToTwentyYears	0.0334
CY2017Q4	fxnc	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate Five Year To Twenty Years DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRateFiveYearToTwentyYears	0.0358
CY2017	fxnc	Defined Contribution Plan Minimum Eligible Age Of Employee DefinedContributionPlanMinimumEligibleAgeOfEmployee	P19Y
CY2017	fxnc	Defined Contribution Plan Percentage Of Employer Matching Contribution Of First One Percent Of Employee Contribution DefinedContributionPlanPercentageOfEmployerMatchingContributionOfFirstOnePercentOfEmployeeContribution	0.01
CY2016	fxnc	Effective Income Tax Rate Reconciliation Bank Owned Life Insurance Income Amount EffectiveIncomeTaxRateReconciliationBankOwnedLifeInsuranceIncomeAmount	179000	USD
CY2017	fxnc	Effective Income Tax Rate Reconciliation Bank Owned Life Insurance Income Amount EffectiveIncomeTaxRateReconciliationBankOwnedLifeInsuranceIncomeAmount	244000	USD
CY2017	fxnc	Employee Matching Contribution Vesting Period Under Plan EmployeeMatchingContributionVestingPeriodUnderPlan	P2Y
CY2017	fxnc	Financing Receivable Modification As Troubled Debt Restructuring That Subsequently Defaulted FinancingReceivableModificationAsTroubledDebtRestructuringThatSubsequentlyDefaulted	P90D
CY2017	fxnc	Number Obligation Of State And Political Subdivisions In Unrealized Loss Position NumberObligationOfStateAndPoliticalSubdivisionsInUnrealizedLossPosition	39	Obligation
CY2017	fxnc	Number Of Companies For Which Consolidated Financial Statements Presented NumberOfCompaniesForWhichConsolidatedFinancialStatementsPresented	6	Entity
CY2017	fxnc	Number Of Highest Paid Consecutive Periods Of Service For Calculation Of Average Compensation Related To Benefits NumberOfHighestPaidConsecutivePeriodsOfServiceForCalculationOfAverageCompensationRelatedToBenefits	P5Y
CY2016Q4	fxnc	Number Of Obligations Of State And Political Subdivisions NumberOfObligationsOfStateAndPoliticalSubdivisions	78	Obligation
CY2017Q4	fxnc	Number Of Obligations Of State And Political Subdivisions NumberOfObligationsOfStateAndPoliticalSubdivisions	80	Obligation
CY2017Q4	fxnc	Operating Leases Future Minimum Payments Due In Five Years And Thereafter OperatingLeasesFutureMinimumPaymentsDueInFiveYearsAndThereafter	54000	USD
CY2017	fxnc	Other Comprehensive Income Loss Net Of Tax Portion Attributableto Parent Excluding Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings Tax Effect OtherComprehensiveIncomeLossNetOfTaxPortionAttributabletoParentExcludingTaxCutsAndJobsActOf2017ReclassificationFromAOCIToRetainedEarningsTaxEffect	60000	USD
CY2016	fxnc	Other Real Estate Charge Off OtherRealEstateChargeOff	251000	USD
CY2017	fxnc	Other Real Estate Charge Off OtherRealEstateChargeOff	0	USD
CY2016Q4	fxnc	Financing Receivable Non Accrual Loans Excluded From Impaired Loan Disclosure FinancingReceivableNonAccrualLoansExcludedFromImpairedLoanDisclosure	0	USD
CY2017Q4	fxnc	Financing Receivable Non Accrual Loans Excluded From Impaired Loan Disclosure FinancingReceivableNonAccrualLoansExcludedFromImpairedLoanDisclosure	0	USD
CY2016	fxnc	Gain Loss On Charitable Donations Of Available For Sale Securities GainLossOnCharitableDonationsOfAvailableForSaleSecurities	0	USD
CY2017	fxnc	Gain Loss On Charitable Donations Of Available For Sale Securities GainLossOnCharitableDonationsOfAvailableForSaleSecurities	-13000	USD
CY2017	fxnc	Gain Loss On Rate Lock Commitments GainLossOnRateLockCommitments	0	USD
CY2017	fxnc	Gross Gain Loss On Charitable Donations Of Available For Sale Securities GrossGainLossOnCharitableDonationsOfAvailableForSaleSecurities	13000	USD
CY2016	fxnc	Held To Maturity Securities Number Of Securities Sold HeldToMaturitySecuritiesNumberOfSecuritiesSold	1	Security
CY2017	fxnc	Held To Maturity Securities Number Of Securities Sold HeldToMaturitySecuritiesNumberOfSecuritiesSold	0	Security
CY2017	fxnc	Impairment Losses Related To Federal Home Loan Stock ImpairmentLossesRelatedToFederalHomeLoanStock	0	USD
CY2017	fxnc	Largest Amount Of Tax Benefit Realized By Taxing Authority LargestAmountOfTaxBenefitRealizedByTaxingAuthority	0.50
CY2017	fxnc	Minimum Period From Past Due Of Collection Of Loans For Determining Nonaccrual Status MinimumPeriodFromPastDueOfCollectionOfLoansForDeterminingNonaccrualStatus	P90D
CY2016	fxnc	Number Obligation Of State And Political Subdivisions In Unrealized Loss Position NumberObligationOfStateAndPoliticalSubdivisionsInUnrealizedLossPosition	50	Obligation
CY2016	fxnc	Other Real Estate Gross Gains OtherRealEstateGrossGains	193000	USD
CY2017	fxnc	Other Real Estate Gross Gains OtherRealEstateGrossGains	191000	USD
CY2016	fxnc	Other Real Estate Owned Expenses OtherRealEstateOwnedExpenses	46000	USD
CY2017	fxnc	Other Real Estate Owned Expenses OtherRealEstateOwnedExpenses	5000	USD
CY2016	fxnc	Other Real Estate Owned Income Expense Net OtherRealEstateOwnedIncomeExpenseNet	120000	USD
CY2017	fxnc	Other Real Estate Owned Income Expense Net OtherRealEstateOwnedIncomeExpenseNet	186000	USD
CY2017Q4	fxnc	Percentage Of Assets For Maximum Borrowing PercentageOfAssetsForMaximumBorrowing	0.19
CY2016	fxnc	Percentage Of Investment Portfolio PercentageOfInvestmentPortfolio	1
CY2017	fxnc	Percentage Of Investment Portfolio PercentageOfInvestmentPortfolio	1
CY2017	fxnc	Period Of Maturity As Classifies As Short Term Borrowing PeriodOfMaturityAsClassifiesAsShortTermBorrowing	P90D
CY2017	fxnc	Quoted Prices Preceding Dividend Payment Date Period QuotedPricesPrecedingDividendPaymentDatePeriod	P10D
CY2017	fxnc	Services Completed By Eligible Participant Under Plan ServicesCompletedByEligibleParticipantUnderPlan	PT1000H
CY2000Q1	fxnc	Share Based Compensation Arrangement By Share Based Payment Award Vesting Percentage Under Award Requisite Service Period ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPercentageUnderAwardRequisiteServicePeriod	1
CY2017	fxnc	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseBenefit	752000	USD
CY2017	fxnc	Tax Cuts And Jobs Act Of2017 Reclassification From Aoci To Retained Earnings Tax Effect TaxCutsAndJobsActOf2017ReclassificationFromAOCIToRetainedEarningsTaxEffect	0	USD
CY2016Q4	fxnc	Time Deposits250000 Or More TimeDeposits250000OrMore	10100000	USD
CY2017Q4	fxnc	Time Deposits250000 Or More TimeDeposits250000OrMore	14100000	USD
CY2016	fxnc	Transfer From Premises And Equipment To Other Real Estate Owned TransferFromPremisesAndEquipmentToOtherRealEstateOwned	250000	USD
CY2017	fxnc	Transfer From Premises And Equipment To Other Real Estate Owned TransferFromPremisesAndEquipmentToOtherRealEstateOwned	326000	USD
CY2016	fxnc	Weighted Average Period Of Pricing Of Portfolio WeightedAveragePeriodOfPricingOfPortfolio	P4Y8M12D
CY2017	fxnc	Weighted Average Period Of Pricing Of Portfolio WeightedAveragePeriodOfPricingOfPortfolio	P4Y8M12D
CY2016	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-842000	USD
CY2017	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-631000	USD
CY2016Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	8587000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	9870000	USD
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	5499000	USD
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	32323000	USD
CY2016	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	585000	USD
CY2017	us-gaap	Allowance For Loan And Lease Loss Recovery Of Bad Debts AllowanceForLoanAndLeaseLossRecoveryOfBadDebts	638000	USD
CY2016	us-gaap	Allowance For Loan And Lease Losses Period Increase Decrease AllowanceForLoanAndLeaseLossesPeriodIncreaseDecrease	32000	USD
CY2016	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	788000	USD
CY2017	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	733000	USD
CY2016	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	17000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	0	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-99000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-860000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-958000	USD
CY2016Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	7093000	USD
CY2017Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	7260000	USD
CY2016	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	113000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	141000	USD
CY2016Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	0	USD
CY2017Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	0	USD
CY2016	us-gaap	Advertising Expense AdvertisingExpense	402000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	379000	USD
CY2016	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	25000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	72000	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	18000	USD
CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	771000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	621000	USD
CY2016Q4	us-gaap	Assets Assets	716000000	USD
CY2017Q4	us-gaap	Assets Assets	739110000	USD
CY2016Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	94802000	USD
CY2017Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	89255000	USD
CY2016Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	333000	USD
CY2017Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	153000	USD
CY2016Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1637000	USD
CY2017Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1492000	USD
CY2016Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	96106000	USD
CY2017Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	90594000	USD
CY2016Q4	us-gaap	Available For Sale Securities And Held To Maturity Securities AvailableForSaleSecuritiesAndHeldToMaturitySecurities	147511000	USD
CY2017Q4	us-gaap	Available For Sale Securities And Held To Maturity Securities AvailableForSaleSecuritiesAndHeldToMaturitySecurities	136957000	USD
CY2016	us-gaap	Available For Sale Securities Change In Net Unrealized Holding Gain Loss Net Of Tax AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTax	-1012000	USD
CY2017	us-gaap	Available For Sale Securities Change In Net Unrealized Holding Gain Loss Net Of Tax AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTax	-35000	USD
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	208000	USD
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1153000	USD
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	71572000	USD
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	66755000	USD
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	1429000	USD
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	339000	USD
CY2016Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	66073000	USD
CY2017Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	34432000	USD
CY2016Q4	us-gaap	Common Stock Value CommonStockValue	6162000	USD
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	6182000	USD
CY2016	us-gaap	Communication Communication	451000	USD
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	8920000	USD
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	8774000	USD
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	9040000	USD
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	9048000	USD
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	72034000	USD
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	70832000	USD
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	600000	USD
CY2017Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	601000	USD
CY2016	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	22000	USD
CY2017	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	49000	USD
CY2016	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	14000	USD
CY2017	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	152000	USD
CY2016Q4	us-gaap	Available For Sale Securities Restricted AvailableForSaleSecuritiesRestricted	27700000	USD
CY2017Q4	us-gaap	Available For Sale Securities Restricted AvailableForSaleSecuritiesRestricted	35200000	USD
CY2016Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	13928000	USD
CY2017Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	13967000	USD
CY2016	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	527000	USD
CY2017	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	720000	USD
CY2016Q4	us-gaap	Capital Capital	65590000	USD
CY2017Q4	us-gaap	Capital Capital	67624000	USD
CY2016Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	38951000	USD
CY2017Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	41239000	USD
CY2016Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2017Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2016Q4	us-gaap	Capital Required To Be Well Capitalized CapitalRequiredToBeWellCapitalized	48689000	USD
CY2017Q4	us-gaap	Capital Required To Be Well Capitalized CapitalRequiredToBeWellCapitalized	51548000	USD
CY2016Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.1000
CY2017Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.1000
CY2016Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1347
CY2017Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1312
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	39334000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	41092000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	39986000	USD
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	1758000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-1106000	USD
CY2016Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	10106000	USD
CY2017Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	11358000	USD
CY2016Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.25
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.25
CY2016Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	8000000	shares
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	8000000	shares
CY2016Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	4929403	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	4945702	shares
CY2016Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	4929403	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	4945702	shares
CY2017	us-gaap	Communication Communication	416000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	6635000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	6508000	USD
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1925000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2443000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	428000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1283000	USD
CY2016Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	710000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	589000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	371000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Goodwill And Intangible Assets DeferredTaxAssetsGoodwillAndIntangibleAssets	317000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	3400000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1804000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Investment In Subsidiaries DeferredTaxAssetsInvestmentInSubsidiaries	17000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Investment In Subsidiaries DeferredTaxAssetsInvestmentInSubsidiaries	5000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	447000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	281000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	2690000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	1215000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	1809000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	1118000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	708000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	562000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	5800000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	5300000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax	0	USD
CY2017Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses After Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax	126000	USD
CY2016	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	124000	USD
CY2017	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	16000	USD
CY2016	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-245000	USD
CY2017	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	145000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.0300
CY2016	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0425
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate	0.0147
CY2016	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0750
CY2017	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.0100
CY2016	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease	0.0300
CY2015Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	8107000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	5777000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	5283000	USD
CY2016	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	695000	USD
CY2017	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	431000	USD
CY2016	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	0	USD
CY2016	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	0	USD
CY2017	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	1800000	USD
CY2017	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	1800000	USD
CY2016	us-gaap	Defined Benefit Plan Curtailments DefinedBenefitPlanCurtailments	2621000	USD
CY2017	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	47000	USD
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	0	USD
CY2016Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1.00
CY2017Q4	us-gaap	Defined Benefit Plan Weighted Average Asset Allocations DefinedBenefitPlanWeightedAverageAssetAllocations	1.00
CY2016	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	482000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	740000	USD
CY2016	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	695000	USD
CY2017	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	431000	USD
CY2016	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	173000	USD
CY2017	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	0	USD
CY2016	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	410000	USD
CY2017	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.50
CY2016Q4	us-gaap	Deposits Deposits	645570000	USD
CY2017	us-gaap	Defined Benefit Plan Curtailments DefinedBenefitPlanCurtailments	0	USD
CY2016	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	297000	USD
CY2017	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	35000	USD
CY2015Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	4264000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	3693000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	5078000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-2084000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-205000	USD
CY2016	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	331000	USD
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	82000	USD
CY2016	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	355000	USD
CY2017Q4	us-gaap	Deposits Deposits	664980000	USD
CY2016Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	349067000	USD
CY2017Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	361417000	USD
CY2016	us-gaap	Depreciation Depreciation	1400000	USD
CY2017	us-gaap	Depreciation Depreciation	1400000	USD
CY2016	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1356000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	1386000	USD
CY2016	us-gaap	Dividend Income Operating DividendIncomeOperating	81000	USD
CY2017	us-gaap	Dividend Income Operating DividendIncomeOperating	83000	USD
CY2016	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	591000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	692000	USD
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.20
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.30
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.20
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.30
CY2016	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	0	USD
CY2017	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	0	USD
CY2016Q4	us-gaap	Employee Stock Ownership Plan Esop Shares In Esop EmployeeStockOwnershipPlanESOPSharesInESOP	247283	shares
CY2017Q4	us-gaap	Employee Stock Ownership Plan Esop Shares In Esop EmployeeStockOwnershipPlanESOPSharesInESOP	230846	shares
CY2016	us-gaap	Equipment Expense EquipmentExpense	1634000	USD
CY2017	us-gaap	Equipment Expense EquipmentExpense	1636000	USD
CY2016	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	0	USD
CY2017	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	14000	USD
CY2016	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	426000	USD
CY2017	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	316000	USD
CY2016Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	623000	USD
CY2017Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	645000	USD
CY2016Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	875000	USD
CY2017Q4	us-gaap	Federal Reserve Bank Stock FederalReserveBankStock	875000	USD
CY2016	us-gaap	Fees And Commissions FeesAndCommissions	1362000	USD
CY2017	us-gaap	Fees And Commissions FeesAndCommissions	1447000	USD
CY2016	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	3512000	USD
CY2017	us-gaap	Fees And Commissions Depositor Accounts FeesAndCommissionsDepositorAccounts	3028000	USD
CY2016	us-gaap	Fees And Commissions Other FeesAndCommissionsOther	581000	USD
CY2017	us-gaap	Fees And Commissions Other FeesAndCommissionsOther	570000	USD
CY2016Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	5284000	USD
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	5326000	USD
CY2016Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	37000	USD
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	0	USD
CY2016Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	481207000	USD
CY2017Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	518390000	USD
CY2016Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	4860000	USD
CY2017Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	3811000	USD
CY2016	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	1	Contract
CY2017	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	0	Contract
CY2016	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	88000	USD
CY2016	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	138000	USD
CY2016Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	460000	USD
CY2017Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	333000	USD
CY2016	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	USD
CY2017	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	USD
CY2016Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	116000	USD
CY2017Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	183000	USD
CY2016Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	483042000	USD
CY2017Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	517630000	USD
CY2016Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	1520000	USD
CY2017Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	937000	USD
CY2016Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	3025000	USD
CY2017Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	4571000	USD
CY2016	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	50000	USD
CY2016	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-8000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-252000	USD
CY2016	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	8000	USD
CY2017	us-gaap	Gain Loss On Sale Of Securities Net GainLossOnSaleOfSecuritiesNet	-90000	USD
CY2016	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	144000	USD
CY2017	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	172000	USD
CY2016	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	193000	USD
CY2017	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	191000	USD
CY2016Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	53398000	USD
CY2017Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	48208000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	19000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	90000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	708000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	48980000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	38487000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	708000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	250000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	0	USD
CY2017Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	13297000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	14158000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	14160000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	6144000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	6186000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	48980000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	25190000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	596000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	53398000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	48208000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2017Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	346000	USD
CY2016Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	708000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	596000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	27400000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	27862000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	0	USD
CY2017Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	0	USD
CY2016Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	52709000	USD
CY2017Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	47702000	USD
CY2016	us-gaap	Held To Maturity Securities Sold Security Realized Gain Loss HeldToMaturitySecuritiesSoldSecurityRealizedGainLoss	0	USD
CY2017	us-gaap	Held To Maturity Securities Sold Security Realized Gain Loss HeldToMaturitySecuritiesSoldSecurityRealizedGainLoss	0	USD
CY2016	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	7034000	USD
CY2017	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	4656000	USD
CY2016	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	176000	USD
CY2017	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	232000	USD
CY2016Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	5545000	USD
CY2017Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	4575000	USD
CY2016Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	4707000	USD
CY2017Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	3811000	USD
CY2016Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	153000	USD
CY2017Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	0	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	8260000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	10174000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2353000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3726000	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	752000	USD
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	2808000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	3459000	USD
CY2016	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-22000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	0	USD
CY2016	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	254000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	241000	USD
CY2016	us-gaap	Income Taxes Paid IncomeTaxesPaid	1974000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	3377000	USD
CY2016	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	85000	USD
CY2017	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	170000	USD
CY2016	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	406000	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-2224000	USD
CY2016	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	31128000	USD
CY2017	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	25186000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-26000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1202000	USD
CY2016	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	2115000	USD
CY2017	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	126000	USD
CY2016	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-12507000	USD
CY2017	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-5672000	USD
CY2016	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	593000	USD
CY2017	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	620000	USD
CY2016	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	25237000	USD
CY2017	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	27652000	USD
CY2016	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	21662000	USD
CY2017	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	24082000	USD
CY2016Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	30986000	USD
CY2017Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	28628000	USD
CY2016	us-gaap	Interest Expense InterestExpense	1982000	USD
CY2017	us-gaap	Interest Expense InterestExpense	2386000	USD
CY2016	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	6000	USD
CY2017	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	0	USD
CY2016	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1353000	USD
CY2017	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1723000	USD
CY2016	us-gaap	Interest Expense Federal Funds Purchased InterestExpenseFederalFundsPurchased	3000	USD
CY2017	us-gaap	Interest Expense Federal Funds Purchased InterestExpenseFederalFundsPurchased	0	USD
CY2016	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	259000	USD
CY2017	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	303000	USD
CY2016	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	361000	USD
CY2017	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	360000	USD
CY2016	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	238000	USD
CY2017	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	335000	USD
CY2016	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	23255000	USD
CY2017	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	25166000	USD
CY2016	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	23255000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	25266000	USD
CY2016	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	564000	USD
CY2017	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	583000	USD
CY2017	us-gaap	Interest Paid InterestPaid	2486000	USD
CY2016	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	2692000	USD
CY2017	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	2569000	USD
CY2016	us-gaap	Interest Paid InterestPaid	2172000	USD
CY2016Q4	us-gaap	Interest Receivable InterestReceivable	1746000	USD
CY2017Q4	us-gaap	Interest Receivable InterestReceivable	1916000	USD
CY2016Q4	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	9279000	USD
CY2017Q4	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	9279000	USD
CY2016	us-gaap	Labor And Related Expense LaborAndRelatedExpense	12939000	USD
CY2017	us-gaap	Labor And Related Expense LaborAndRelatedExpense	12923000	USD
CY2016Q4	us-gaap	Liabilities Liabilities	663849000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	680956000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	716000000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	739110000	USD
CY2016	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	425000	USD
CY2017	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	408000	USD
CY2016Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	125600000	USD
CY2017Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	134100000	USD
CY2015Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	5524000	USD
CY2016Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	5321000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	5326000	USD
CY2016Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	486067000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	522201000	USD
CY2016	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	107000	USD
CY2017	us-gaap	Loans And Leases Receivable Impaired Interest Lost On Nonaccrual Loans LoansAndLeasesReceivableImpairedInterestLostOnNonaccrualLoans	107000	USD
CY2016Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	480746000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	516875000	USD
CY2016Q4	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	103900000	USD
CY2017Q4	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	117700000	USD
CY2016Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	337000	USD
CY2017Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	438000	USD
CY2016	us-gaap	Marketing Expense MarketingExpense	562000	USD
CY2017	us-gaap	Marketing Expense MarketingExpense	576000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	18071000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	18868000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-25322000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-26543000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	9009000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6569000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	5907000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	6448000	USD
CY2016Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	168076000	USD
CY2017Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	180912000	USD
CY2016	us-gaap	Noninterest Expense NoninterestExpense	23488000	USD
CY2017	us-gaap	Noninterest Expense NoninterestExpense	23284000	USD
CY2016	us-gaap	Noninterest Income NoninterestIncome	8493000	USD
CY2017	us-gaap	Noninterest Income NoninterestIncome	8292000	USD
CY2016	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	322000	USD
CY2017	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	305000	USD
CY2016	us-gaap	Occupancy Net OccupancyNet	1533000	USD
CY2017	us-gaap	Occupancy Net OccupancyNet	1482000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	433000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	124000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	74000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	79000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	102000	USD
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	90000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	105000	USD
CY2016Q4	us-gaap	Other Assets OtherAssets	5817000	USD
CY2017Q4	us-gaap	Other Assets OtherAssets	5748000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	728000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	60000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-2115000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-126000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1396000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-83000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	2115000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	126000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	719000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	43000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	5000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-59000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	3000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-31000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-663000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-82000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-341000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-43000	USD
CY2016Q4	us-gaap	Other Liabilities OtherLiabilities	4070000	USD
CY2017Q4	us-gaap	Other Liabilities OtherLiabilities	1749000	USD
CY2016	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1881000	USD
CY2017	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1925000	USD
CY2015Q4	us-gaap	Other Real Estate OtherRealEstate	2903000	USD
CY2016Q4	us-gaap	Other Real Estate OtherRealEstate	250000	USD
CY2017Q4	us-gaap	Other Real Estate OtherRealEstate	326000	USD
CY2016	us-gaap	Other Real Estate Additions OtherRealEstateAdditions	287000	USD
CY2017	us-gaap	Other Real Estate Additions OtherRealEstateAdditions	326000	USD
CY2016Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	250000	USD
CY2017Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	326000	USD
CY2016	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	2882000	USD
CY2017	us-gaap	Other Real Estate Disposals OtherRealEstateDisposals	441000	USD
CY2016	us-gaap	Other Real Estate Valuation Adjustments OtherRealEstateValuationAdjustments	0	USD
CY2017	us-gaap	Other Real Estate Valuation Adjustments OtherRealEstateValuationAdjustments	0	USD
CY2016	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	9281000	USD
CY2017	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	9789000	USD
CY2016	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	47308000	USD
CY2017	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	36229000	USD
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	550000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	646000	USD
CY2016	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	13615000	USD
CY2017	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	23170000	USD
CY2016	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	2011000	USD
CY2017	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	11000	USD
CY2016	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1033000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	1070000	USD
CY2016	us-gaap	Payments To Acquire Restricted Investments PaymentsToAcquireRestrictedInvestments	157000	USD
CY2017	us-gaap	Payments To Acquire Restricted Investments PaymentsToAcquireRestrictedInvestments	22000	USD
CY2016Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	2084000	USD
CY2017Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	205000	USD
CY2016	us-gaap	Postage Expense PostageExpense	238000	USD
CY2017	us-gaap	Postage Expense PostageExpense	211000	USD
CY2016Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.25
CY2017Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.25
CY2016Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2016Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2017Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2016Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2017Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2016Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2017Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2016	us-gaap	Proceeds From Issuance Of Common Stock Dividend Reinvestment Plan ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan	41000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock Dividend Reinvestment Plan ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan	46000	USD
CY2016	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	250000	USD
CY2017	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	380000	USD
CY2016	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	12821000	USD
CY2016	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	12800000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	5000000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	4981000	USD
CY2016	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	22800000	USD
CY2016	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	22826000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	28200000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	28157000	USD
CY2016	us-gaap	Proceeds From Sale Of Held To Maturity Securities ProceedsFromSaleOfHeldToMaturitySecurities	657000	USD
CY2016	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	9411000	USD
CY2017	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	9860000	USD
CY2016	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	2882000	USD
CY2017	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	441000	USD
CY2016	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	23000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2016	us-gaap	Professional Fees ProfessionalFees	884000	USD
CY2017	us-gaap	Professional Fees ProfessionalFees	886000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	29372000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	29761000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	20785000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	19891000	USD
CY2016	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	0	USD
CY2017	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	100000	USD
CY2016	us-gaap	Provision For Other Losses ProvisionForOtherLosses	27000	USD
CY2017	us-gaap	Provision For Other Losses ProvisionForOtherLosses	0	USD
CY2015Q4	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	224000	USD
CY2016Q4	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	0	USD
CY2017Q4	us-gaap	Real Estate Owned Valuation Allowance RealEstateOwnedValuationAllowance	0	USD
CY2016	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	251000	USD
CY2017	us-gaap	Real Estate Owned Valuation Allowance Amounts Applied RealEstateOwnedValuationAllowanceAmountsApplied	0	USD
CY2016	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	27000	USD
CY2017	us-gaap	Real Estate Owned Valuation Allowance Provision1 RealEstateOwnedValuationAllowanceProvision1	0	USD
CY2016Q4	us-gaap	Restricted Investments RestrictedInvestments	1548000	USD
CY2017Q4	us-gaap	Restricted Investments RestrictedInvestments	1570000	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	39756000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	45670000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	113000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	141000	USD
CY2000Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardRequisiteServicePeriod1	P2Y
CY2016	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	3949	shares
CY2017	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	3035	shares
CY2016	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	41000	USD
CY2017	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	46000	USD
CY2016	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	0	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	0	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	45953000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	52151000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	58154000	USD
CY2016Q4	us-gaap	Subordinated Debt SubordinatedDebt	4930000	USD
CY2017Q4	us-gaap	Subordinated Debt SubordinatedDebt	4948000	USD
CY2016	us-gaap	Supplies Expense SuppliesExpense	450000	USD
CY2017	us-gaap	Supplies Expense SuppliesExpense	365000	USD
CY2016Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	60269000	USD
CY2017Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	62298000	USD
CY2016Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	28432000	USD
CY2017Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	29457000	USD
CY2016Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2017Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2016Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized TierOneLeverageCapitalRequiredToBeWellCapitalized	35540000	USD
CY2017Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized TierOneLeverageCapitalRequiredToBeWellCapitalized	36821000	USD
CY2016Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.0500
CY2017Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.0500
CY2016Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0848
CY2017Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0846
CY2016Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	60269000	USD
CY2017Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	62298000	USD
CY2016Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	29213000	USD
CY2017Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	30929000	USD
CY2016Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600
CY2017Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600
CY2016Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized TierOneRiskBasedCapitalRequiredToBeWellCapitalized	38951000	USD
CY2017Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized TierOneRiskBasedCapitalRequiredToBeWellCapitalized	41239000	USD
CY2016Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0800
CY2017Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.0800
CY2016Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1238
CY2017Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1209
CY2017Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	309000	USD
CY2017Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	6745000	USD
CY2017Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	12454000	USD
CY2017Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	59833000	USD
CY2017Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	16381000	USD
CY2017Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	26929000	USD
CY2016Q4	us-gaap	Time Deposits TimeDeposits	128427000	USD
CY2017Q4	us-gaap	Time Deposits TimeDeposits	122651000	USD
CY2016	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	37000	USD
CY2017	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	0	USD
CY2016Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	142000	USD
CY2017Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	301000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	4928184	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	4943898	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	4924636	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	4941233	shares
CY2016	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	3548	shares
CY2017	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	2665	shares
CY2017	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Significant Group Concentrations of Credit Risk</font></div><div style="line-height:120%;padding-top:8px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Most of the Company’s activities are with customers located within the Shenandoah Valley and central regions of Virginia. The types of lending that the Company engages in are included in Note 3. The Company has a concentration of credit risk in commercial real estate, but does not have a significant concentration to any one customer or industry.</font></div></div>
CY2017	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Reclassifications</font></div><div style="line-height:120%;padding-top:8px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Some items in the prior year financial statements were reclassified to conform to the current presentation. Reclassifications had no effect on prior year net income or shareholders’ equity.</font></div></div>
CY2017	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:24px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Use of Estimates</font></div><div style="line-height:120%;padding-top:8px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In preparing consolidated financial statements in conformity with accounting principles generally accepted in the United States, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the consolidated balance sheet and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for loan losses, valuation of other real estate owned, valuation of core deposit intangibles, and other-than-temporary impairment of securities.</font></div></div>

Files In Submission

Name	View Source	Status
0000719402-18-000007-index-headers.html	Edgar Link	pending
0000719402-18-000007-index.html	Edgar Link	pending
0000719402-18-000007.txt	Edgar Link	pending
0000719402-18-000007-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
fxnc-20171231.xml	Edgar Link	completed
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$FXNC
FIRST NATIONAL CORP /VA/ Stock $fxnc

2016 Q4 Form 10-K Financial Statement

#000071940218000007 Filed on March 23, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FXNC FIRST NATIONAL CORP /VA/ Stock $fxnc

2016 Q4 Form 10-K Financial Statement

#000071940218000007 Filed on March 23, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$FXNC
FIRST NATIONAL CORP /VA/ Stock $fxnc