$NKSH
NATIONAL BANKSHARES INC Stock $nksh

$nksh Overview Financials Valuation SEC Filings Company Website

2020 Q3 Form 10-Q Financial Statement

#000143774920017215 Filed on August 10, 2020

Income Statement

Concept	2020 Q3	2020 Q2	2019 Q2
Revenue	$10.71M	$10.75M	$11.29M
YoY Change	-5.14%	-4.81%	5.29%
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	$180.0K	$170.0K	$190.0K
YoY Change	-5.26%	-10.53%	-17.39%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$1.420M	$1.598M	$1.914M
YoY Change	-23.86%	-16.51%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$4.940M	$3.468M	$4.727M
YoY Change	-1.98%	-26.63%	0.94%
Income Tax	$772.0K	$486.0K	$733.0K
% Of Pretax Income	15.63%	14.01%	15.51%
Net Earnings	$4.168M	$2.982M	$3.994M
YoY Change	-1.98%	-25.34%	-1.16%
Net Earnings / Revenue	38.92%	27.74%	35.37%
Basic Earnings Per Share	$0.64	$0.46	$0.61
Diluted Earnings Per Share	$0.64	$0.46	$0.61
COMMON SHARES
Basic Shares Outstanding	6.490M	6.490M
Diluted Shares Outstanding

Balance Sheet

Concept	2020 Q3	2020 Q2	2019 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$10.59M	$13.32M	$17.17M
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	$10.02M	$9.955M	$9.012M
YoY Change	11.46%	10.46%	2.91%
Goodwill	$5.848M	$5.848M	$5.848M
YoY Change	0.0%	0.0%
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	$1.435B	$1.434B	$1.270B
YoY Change	12.79%	12.94%	0.16%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$100.0K	$100.0K	$100.0K
YoY Change	0.0%	0.0%	0.0%
Accrued Expenses			$2.100M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$100.0K	$100.0K	$2.200M
YoY Change	-96.0%	-95.45%	2100.0%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$19.60M	$18.20M	$13.60M
YoY Change	38.03%	33.82%	6.25%
Total Long-Term Liabilities	$19.60M	$18.20M	$13.60M
YoY Change	38.03%	33.82%	6.25%
TOTAL LIABILITIES
Total Short-Term Liabilities	$100.0K	$100.0K	$2.200M
Total Long-Term Liabilities	$19.60M	$18.20M	$13.60M
Total Liabilities	$1.233B	$1.238B	$1.086B
YoY Change	13.7%	14.03%	0.37%
SHAREHOLDERS EQUITY
Retained Earnings	$190.9M	$186.7M	$180.3M
YoY Change	3.74%	3.58%	-4.72%
Common Stock	$8.112M	$8.112M	$8.132M
YoY Change	0.0%	-0.25%	-6.51%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$202.2M	$195.8M	$183.8M
YoY Change
Total Liabilities & Shareholders Equity	$1.435B	$1.434B	$1.270B
YoY Change	12.79%	12.94%	0.16%

Cashflow Statement

Concept	2020 Q3	2020 Q2	2019 Q2
OPERATING ACTIVITIES
Net Income	$4.168M	$2.982M	$3.994M
YoY Change	-1.98%	-25.34%	-1.16%
Depreciation, Depletion And Amortization	$180.0K	$170.0K	$190.0K
YoY Change	-5.26%	-10.53%	-17.39%
Cash From Operating Activities	$3.730M	$1.210M	$2.860M
YoY Change	-15.23%	-57.69%	-23.53%
INVESTING ACTIVITIES
Capital Expenditures	-$240.0K	-$70.00K	-$360.0K
YoY Change	41.18%	-80.56%	-57.65%
Acquisitions
YoY Change
Other Investing Activities	-$180.0K	-$107.3M	-$5.890M
YoY Change	-96.33%	1721.9%	-181.35%
Cash From Investing Activities	-$430.0K	-$107.4M	-$6.260M
YoY Change	-91.52%	1615.18%	-197.81%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-6.030M	107.1M	5.230M
YoY Change	162.17%	1947.42%	-163.78%
NET CHANGE
Cash From Operating Activities	3.730M	1.210M	2.860M
Cash From Investing Activities	-430.0K	-107.4M	-6.260M
Cash From Financing Activities	-6.030M	107.1M	5.230M
Net Change In Cash	-2.730M	920.0K	1.830M
YoY Change	-8.08%	-49.73%	-5.67%
FREE CASH FLOW
Cash From Operating Activities	$3.730M	$1.210M	$2.860M
Capital Expenditures	-$240.0K	-$70.00K	-$360.0K
Free Cash Flow	$3.970M	$1.280M	$3.220M
YoY Change	-13.13%	-60.25%	-29.85%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
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CY2019Q4	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
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CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000
CY2020Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2020Q2	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2019Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2020Q2	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
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CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	6489574
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	6489574
CY2020Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1498000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	795000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	13000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	2000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	2526000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	2003000	USD
CY2019Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	1612000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	17000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	4000	USD
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	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	1999000	USD
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.67
	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	0	USD
CY2020Q2	us-gaap	Cash And Due From Banks CashAndDueFromBanks	13315000	USD
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CY2020Q2	us-gaap	Investment Owned Restricted Cost InvestmentOwnedRestrictedCost	1279000	USD
CY2019Q4	us-gaap	Investment Owned Restricted Cost InvestmentOwnedRestrictedCost	1220000	USD
CY2020Q2	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	2367000	USD
CY2019Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	905000	USD
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CY2020Q2	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	1553000	USD
CY2020Q2	us-gaap	Goodwill Goodwill	5848000	USD
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CY2020Q2	us-gaap	Noninterest Bearing Deposit Liabilities Domestic NoninterestBearingDepositLiabilitiesDomestic	263113000	USD
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CY2020Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	936000	USD
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CY2020Q2	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	1863000	USD
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CY2019Q2	us-gaap	Occupancy Net OccupancyNet	477000	USD
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CY2019Q2	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	789000	USD
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CY2020Q2	nksh	Net Costs Of Other Real Estate Owned NetCostsOfOtherRealEstateOwned	-4000	USD
CY2019Q2	nksh	Net Costs Of Other Real Estate Owned NetCostsOfOtherRealEstateOwned	3000	USD
CY2020Q2	nksh	Taxother Taxother	335000	USD
CY2019Q2	nksh	Taxother Taxother	333000	USD
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CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	3994000	USD
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CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2985000	USD
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CY2019Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	6979000	USD
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	16885000	USD
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	16729000	USD
	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	231000	USD
	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	641000	USD
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	4219000	USD
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	3286000	USD
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	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	1775000	USD
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	22138000	USD
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	22431000	USD
	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	1081000	USD
	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	716000	USD
	us-gaap	Interest Expense Other Domestic Deposits InterestExpenseOtherDomesticDeposits	2313000	USD
	us-gaap	Interest Expense Other Domestic Deposits InterestExpenseOtherDomesticDeposits	2991000	USD
	us-gaap	Interest Expense InterestExpense	3394000	USD
	us-gaap	Interest Expense InterestExpense	3707000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	18744000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	18724000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1831000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	255000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	16913000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	18469000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	440000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	451000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	810000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1141000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	82000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	20000	USD
	us-gaap	Noninterest Income NoninterestIncome	3880000	USD
	us-gaap	Noninterest Income NoninterestIncome	4345000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	7671000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	7623000	USD
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.07
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.27
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	65000	USD
	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	6489574
	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	6668038
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.67
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.67
	us-gaap	Net Income Loss NetIncomeLoss	6961000	USD
	us-gaap	Net Income Loss NetIncomeLoss	8437000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	9507000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	7545000	USD
	us-gaap	Occupancy Net OccupancyNet	908000	USD
	us-gaap	Occupancy Net OccupancyNet	942000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1597000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1540000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	40000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	167000	USD
	nksh	Net Costs Of Other Real Estate Owned NetCostsOfOtherRealEstateOwned	18000	USD
	nksh	Net Costs Of Other Real Estate Owned NetCostsOfOtherRealEstateOwned	28000	USD
	nksh	Taxother Taxother	678000	USD
	nksh	Taxother Taxother	647000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1632000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1971000	USD
	us-gaap	Noninterest Expense NoninterestExpense	12544000	USD
	us-gaap	Noninterest Expense NoninterestExpense	12918000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	8249000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	9896000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1288000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1459000	USD
	us-gaap	Net Income Loss NetIncomeLoss	6961000	USD
	us-gaap	Net Income Loss NetIncomeLoss	8437000	USD
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.07
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.27
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	16000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	9442000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7529000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	16403000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	15966000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	181228000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	3994000	USD
CY2019Q2	us-gaap	Dividends Common Stock DividendsCommonStock	4359000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2985000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	183848000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	191559000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	2982000	USD
CY2020Q2	us-gaap	Dividends Common Stock DividendsCommonStock	4348000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	5588000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	195781000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	190238000	USD
	us-gaap	Net Income Loss NetIncomeLoss	8437000	USD
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	17997000	USD
	us-gaap	Dividends Common Stock DividendsCommonStock	4359000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7529000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	183848000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	183726000	USD
	us-gaap	Net Income Loss NetIncomeLoss	6961000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	56000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	30000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-167000	USD
	us-gaap	Dividends Common Stock DividendsCommonStock	4348000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	9442000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	195781000	USD
	us-gaap	Net Income Loss NetIncomeLoss	6961000	USD
	us-gaap	Net Income Loss NetIncomeLoss	8437000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1831000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	255000	USD
	us-gaap	Depreciation Depreciation	351000	USD
	us-gaap	Depreciation Depreciation	358000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-621000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-30000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	2000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	6000	USD
	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	82000	USD
	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	20000	USD
	nksh	Losses And Write Downs On Other Real Estate Owned LossesAndWriteDownsOnOtherRealEstateOwned	13000	USD
	nksh	Losses And Write Downs On Other Real Estate Owned LossesAndWriteDownsOnOtherRealEstateOwned	-5000	USD
	nksh	Gain Loss On Sale Of Repossessed Assets GainLossOnSaleOfRepossessedAssets	-1000	USD
	nksh	Gain Loss On Sale Of Repossessed Assets GainLossOnSaleOfRepossessedAssets	4000	USD
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	440000	USD
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	451000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	16635000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	8065000	USD
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	15424000	USD
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	7444000	USD
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	251000	USD
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	116000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	512000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	32000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	835000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-233000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-27000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6422000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	7957000	USD
	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	3630000	USD
	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	-16547000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	94870000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	53087000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	138121000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	14906000	USD
	us-gaap	Increase Decrease Of Restricted Investments IncreaseDecreaseOfRestrictedInvestments	59000	USD
	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	18000	USD
	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	587000	USD
	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	107000	USD
	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	3184000	USD
	nksh	Proceeds From Loans And Leases Originations And Principal Collections ProceedsFromLoansAndLeasesOriginationsAndPrincipalCollections	-58184000	USD
	nksh	Proceeds From Loans And Leases Originations And Principal Collections ProceedsFromLoansAndLeasesOriginationsAndPrincipalCollections	-22889000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	72000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	22000	USD
	nksh	Proceeds From Sale Of Repossessed Assets ProceedsFromSaleOfRepossessedAssets	30000	USD
	nksh	Proceeds From Sale Of Repossessed Assets ProceedsFromSaleOfRepossessedAssets	20000	USD
	us-gaap	Proceeds From Recoveries Of Loan Previously Charged Off ProceedsFromRecoveriesOfLoanPreviouslyChargedOff	154000	USD
	us-gaap	Proceeds From Recoveries Of Loan Previously Charged Off ProceedsFromRecoveriesOfLoanPreviouslyChargedOff	167000	USD
	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	1385000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	4348000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	832000	USD
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-10146000	USD
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	12934000	USD
	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	110001000	USD
	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	719000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-98904000	USD
	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	4921000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	17997000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	4359000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	95507000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-4501000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	3025000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	4288000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	10290000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	12882000	USD
CY2020Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	13315000	USD
CY2019Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	17170000	USD
	us-gaap	Interest Paid Net InterestPaidNet	3421000	USD
	us-gaap	Interest Paid Net InterestPaidNet	3651000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2115000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1301000	USD
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	540000	USD
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	508000	USD
	nksh	Loans Transferred To Repossessed Assets LoansTransferredToRepossessedAssets	4000	USD
	nksh	Loans Transferred To Repossessed Assets LoansTransferredToRepossessedAssets	24000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	11951000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	9528000	USD
	nksh	Noncash Increase To Operating Lease Rightofuse Asset NoncashIncreaseToOperatingLeaseRightofuseAsset	2236000	USD
	nksh	Noncash Increase To Operating Lease Liability NoncashIncreaseToOperatingLeaseLiability	2236000	USD
CY2020Q2	nksh	Number Of Loan Modifications For Covid19 Related Accommodations NumberOfLoanModificationsForCOVID19RelatedAccommodations	297	pure
CY2020Q2	nksh	Principal Balance Of Loans With Covid19 Related Accommodations PrincipalBalanceOfLoansWithCOVID19RelatedAccommodations	119711000	USD
CY2020Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	793475000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	734027000	USD
CY2020Q2	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	2473000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	576000	USD
CY2020Q2	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	791002000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	733451000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	6863000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	540000	USD
CY2019Q4	nksh	Loan Receivable Nonaccrual LoanReceivableNonaccrual	164000	USD
	nksh	Ratio Of Net Chargeoffs To Average Loans RatioOfNetChargeoffsToAverageLoans	0.0010	pure
CY2019	nksh	Ratio Of Net Chargeoffs To Average Loans RatioOfNetChargeoffsToAverageLoans	0.0009	pure
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	154000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1831000	USD
CY2020Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	8308000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	7390000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	508000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	167000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	255000	USD
CY2019Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	7304000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	7390000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	920000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	267000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	126000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	6863000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	104000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	8204000	USD
CY2020Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	8308000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	110000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	6753000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	6863000	USD
CY2020Q2	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	5227000	USD
CY2020Q2	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	788248000	USD
CY2020Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	793475000	USD
CY2019Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	5289000	USD
CY2019Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	728738000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	734027000	USD
	nksh	Ratio Of Allowance For Loan Losses To End Of Period Loans RatioOfAllowanceForLoanLossesToEndOfPeriodLoans	0.0105	pure
	nksh	Ratio Of Allowance For Loan Losses To End Of Period Loans RatioOfAllowanceForLoanLossesToEndOfPeriodLoans	0.0100	pure
CY2019	nksh	Ratio Of Allowance For Loan Losses To End Of Period Loans RatioOfAllowanceForLoanLossesToEndOfPeriodLoans	0.0094	pure
	nksh	Ratio Of Net Chargeoffs To Average Loans RatioOfNetChargeoffsToAverageLoans	0.0010	pure
	nksh	Ratio Of Allowance For Loan Losses To End Of Period Loans Excluding Ppp Loans RatioOfAllowanceForLoanLossesToEndOfPeriodLoansExcludingPPPLoans	0.0113	pure
CY2020Q2	nksh	Loan Receivable Nonaccrual LoanReceivableNonaccrual	943000	USD
CY2019Q2	nksh	Loan Receivable Nonaccrual LoanReceivableNonaccrual	856000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	5757000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	5289000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	4174000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	1115000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	110000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	5263000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	1484000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	1115000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	104000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	129000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	5227000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	6651000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	5289000	USD
CY2020Q2	nksh	Nonaccrual Restructured Loans NonaccrualRestructuredLoans	2887000	USD
CY2019Q2	nksh	Nonaccrual Restructured Loans NonaccrualRestructuredLoans	3406000	USD
CY2019Q4	nksh	Nonaccrual Restructured Loans NonaccrualRestructuredLoans	3211000	USD
CY2020Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	3830000	USD
CY2019Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	4262000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	3375000	USD
CY2020Q2	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	1553000	USD
CY2019Q2	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	2025000	USD
CY2019Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	1612000	USD
CY2020Q2	nksh	Nonperforming Assets NonperformingAssets	5383000	USD
CY2019Q2	nksh	Nonperforming Assets NonperformingAssets	6287000	USD
CY2019Q4	nksh	Nonperforming Assets NonperformingAssets	4987000	USD
CY2020Q2	nksh	Assets Ratio Of Nonperforming Assets To Loans Net Of Unearned Income And Deferred Fees Plus Oreo AssetsRatioOfNonperformingAssetsToLoansNetOfUnearnedIncomeAndDeferredFeesPlusOreo	0.0068	pure
CY2019Q2	nksh	Assets Ratio Of Nonperforming Assets To Loans Net Of Unearned Income And Deferred Fees Plus Oreo AssetsRatioOfNonperformingAssetsToLoansNetOfUnearnedIncomeAndDeferredFeesPlusOreo	0.0086	pure
CY2019Q4	nksh	Assets Ratio Of Nonperforming Assets To Loans Net Of Unearned Income And Deferred Fees Plus Oreo AssetsRatioOfNonperformingAssetsToLoansNetOfUnearnedIncomeAndDeferredFeesPlusOreo	0.0068	pure
CY2020Q2	nksh	Ratio Of Allowance For Loan Losses To Nonperforming Loans RatioOfAllowanceForLoanLossesToNonperformingLoans	2.1692	pure
CY2019Q2	nksh	Ratio Of Allowance For Loan Losses To Nonperforming Loans RatioOfAllowanceForLoanLossesToNonperformingLoans	1.7137	pure
CY2019Q4	nksh	Ratio Of Allowance For Loan Losses To Nonperforming Loans RatioOfAllowanceForLoanLossesToNonperformingLoans	2.0335	pure
CY2020Q2	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	237000	USD
CY2019Q2	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	50000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	231000	USD
CY2020Q2	nksh	Ratio Of Loans Past Due90 Days Or More And Still Accruing To Loans RatioOfLoansPastDue90DaysOrMoreAndStillAccruingToLoans	0.0003	pure
CY2019Q2	nksh	Ratio Of Loans Past Due90 Days Or More And Still Accruing To Loans RatioOfLoansPastDue90DaysOrMoreAndStillAccruingToLoans	0.0001	pure
CY2019Q4	nksh	Ratio Of Loans Past Due90 Days Or More And Still Accruing To Loans RatioOfLoansPastDue90DaysOrMoreAndStillAccruingToLoans	0.0003	pure
CY2020Q2	nksh	Accruing Restructured Loans AccruingRestructuredLoans	1453000	USD
CY2019Q2	nksh	Accruing Restructured Loans AccruingRestructuredLoans	1954000	USD
CY2019Q4	nksh	Accruing Restructured Loans AccruingRestructuredLoans	1729000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	4151000	USD
CY2019Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	5167000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	4174000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	1076000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	110000	USD
CY2020Q2	nksh	Impaired Loans Net Of Allowance ImpairedLoansNetOfAllowance	5123000	USD
CY2019Q2	nksh	Impaired Loans Net Of Allowance ImpairedLoansNetOfAllowance	6522000	USD
CY2019Q4	nksh	Impaired Loans Net Of Allowance ImpairedLoansNetOfAllowance	5179000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	5263000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	6703000	USD
CY2019	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	5359000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	29000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	52000	USD
CY2019	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	171000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	5735000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	5227000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	4151000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	1076000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	104000	USD
CY2019Q4	nksh	Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses ContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses	85000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	29000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	6703000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	52000	USD
CY2019	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	5359000	USD
CY2019	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	171000	USD
CY2020Q2	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	237000	USD
CY2020Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	3830000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	231000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	3375000	USD
CY2019	nksh	Threshold Period For Considering Loans As Special Mention Or Classified ThresholdPeriodForConsideringLoansAsSpecialMentionOrClassified	P75D
CY2020Q2	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	4340000	USD
CY2019Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	4940000	USD
CY2019Q2	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	5360000	USD
CY2020Q2	nksh	Financing Receivable Number Of Principal And Interest Payment Deferrals FinancingReceivableNumberOfPrincipalAndInterestPaymentDeferrals	297	pure
CY2020Q2	nksh	Financing Receivable Principal And Interest Deferred Payments FinancingReceivablePrincipalAndInterestDeferredPayments	119711000	USD
CY2020Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	477878000	USD
CY2020Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	12900000	USD
CY2020Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	852000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	489926000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	435166000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	2951000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	2854000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	435263000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	9684000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	9766000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	4479000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	4635000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	135247000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	139803000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	328468000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	335722000	USD
CY2020Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	477878000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	489926000	USD
CY2020Q2	nksh	Continuous Unrealized Loss Position Less Than Twelve Months Fair Value ContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	106353000	USD
CY2020Q2	nksh	Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses ContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses	835000	USD
CY2020Q2	nksh	Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value ContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	622000	USD
CY2020Q2	nksh	Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses ContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses	17000	USD
CY2019Q4	nksh	Continuous Unrealized Loss Position Less Than Twelve Months Fair Value ContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	270457000	USD
CY2019Q4	nksh	Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses ContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses	2769000	USD
CY2019Q4	nksh	Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value ContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	39553000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2997000	USD
	nksh	Revenue From Contract With Customer Including Assessed Tax Outside Of Topic606 RevenueFromContractWithCustomerIncludingAssessedTaxOutsideOfTopic606	1143000	USD
	nksh	Revenue From Contract With Customer Including Assessed Tax Outside Of Topic606 RevenueFromContractWithCustomerIncludingAssessedTaxOutsideOfTopic606	1348000	USD
CY2020Q2	nksh	Impaired Loans Net Fair Value Disclosure ImpairedLoansNetFairValueDisclosure	972000	USD
CY2019Q4	nksh	Impaired Loans Net Fair Value Disclosure ImpairedLoansNetFairValueDisclosure	1005000	USD
CY2020Q2	nksh	Other Real Estate Fair Value Disclosure OtherRealEstateFairValueDisclosure	1553000	USD
CY2019Q4	nksh	Other Real Estate Fair Value Disclosure OtherRealEstateFairValueDisclosure	1612000	USD
CY2020Q2	nksh	Number Of Temporarily Impaired Securities NumberOfTemporarilyImpairedSecurities	49	pure
CY2020Q2	nksh	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	106975000	USD
CY2020Q2	nksh	Continuous Unrealized Loss Position Aggregate Losses ContinuousUnrealizedLossPositionAggregateLosses	852000	USD
CY2020Q2	nksh	Number Of Temporarily Impaired Securities Greater Than Twelve Months NumberOfTemporarilyImpairedSecuritiesGreaterThanTwelveMonths	1	pure
CY2020Q2	nksh	Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value ContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	622000	USD
CY2020Q2	nksh	Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses ContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses	17000	USD
CY2020Q2	nksh	Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses ContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses	17000	USD
	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	540000	USD
	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	400000	USD
	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	410000	USD
	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	442000	USD
	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	840000	USD
	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	730000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	54000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	54000	USD
	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-354000	USD
	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-316000	USD
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	410000	USD
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	374000	USD
CY2020Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	489926000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	435263000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1278000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1513000	USD
CY2020Q2	nksh	Revenue From Contract With Customer Including Assessed Tax Outside Of Topic606 RevenueFromContractWithCustomerIncludingAssessedTaxOutsideOfTopic606	467000	USD
CY2019Q2	nksh	Revenue From Contract With Customer Including Assessed Tax Outside Of Topic606 RevenueFromContractWithCustomerIncludingAssessedTaxOutsideOfTopic606	343000	USD
CY2020Q2	us-gaap	Noninterest Income NoninterestIncome	1745000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	1856000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2737000	USD
	us-gaap	Noninterest Income NoninterestIncome	3880000	USD
	us-gaap	Noninterest Income NoninterestIncome	4345000	USD
CY2020Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	2127000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	2277000	USD
CY2020Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y3M21D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y10M24D
CY2020Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0303	pure
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0302	pure
CY2020Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	92000	USD
CY2019Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	77000	USD
CY2020Q2	us-gaap	Short Term Lease Cost ShortTermLeaseCost	0	USD
CY2019Q2	us-gaap	Short Term Lease Cost ShortTermLeaseCost	33000	USD
CY2020Q2	us-gaap	Lease Cost LeaseCost	92000	USD
CY2019Q2	us-gaap	Lease Cost LeaseCost	110000	USD
CY2020Q2	us-gaap	Operating Lease Payments OperatingLeasePayments	91000	USD
CY2019Q2	us-gaap	Operating Lease Payments OperatingLeasePayments	76000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	185000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	136000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	72000	USD
	us-gaap	Lease Cost LeaseCost	186000	USD
	us-gaap	Lease Cost LeaseCost	208000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	182000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	132000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	174000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	345000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	349000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	351000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	333000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	244000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	608000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	2404000	USD
CY2020Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	264000	USD

Files In Submission

Name	View Source	Status
0001437749-20-017215-index-headers.html	Edgar Link	pending
0001437749-20-017215-index.html	Edgar Link	pending
0001437749-20-017215.txt	Edgar Link	pending
0001437749-20-017215-xbrl.zip	Edgar Link	pending
ex_196605.htm	Edgar Link	pending
ex_196606.htm	Edgar Link	pending
ex_196607.htm	Edgar Link	pending
ex_196608.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
nksh-20200630.xsd	Edgar Link	pending
nksh-20200630_cal.xml	Edgar Link	unprocessable
nksh-20200630_def.xml	Edgar Link	unprocessable
nksh-20200630_lab.xml	Edgar Link	unprocessable
nksh-20200630_pre.xml	Edgar Link	unprocessable
nksh20200630_10q.htm	Edgar Link	pending
nksh20200630_10q_htm.xml	Edgar Link	completed
R1.htm	Edgar Link	pending
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R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$NKSH
NATIONAL BANKSHARES INC Stock $nksh

2020 Q3 Form 10-Q Financial Statement

#000143774920017215 Filed on August 10, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NKSH NATIONAL BANKSHARES INC Stock $nksh

2020 Q3 Form 10-Q Financial Statement

#000143774920017215 Filed on August 10, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NKSH
NATIONAL BANKSHARES INC Stock $nksh