$NKSH
NATIONAL BANKSHARES INC Stock $nksh

$nksh Overview Financials Valuation SEC Filings Company Website

2021 Q3 Form 10-Q Financial Statement

#000143774921019812 Filed on August 13, 2021

Income Statement

Concept	2021 Q3	2021 Q2	2020 Q2
Revenue	$11.66M	$10.90M	$10.75M
YoY Change	8.85%	1.37%	-4.81%
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	$150.0K	$170.0K	$170.0K
YoY Change	-16.67%	0.0%	-10.53%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$719.0K	$834.0K	$1.598M
YoY Change	-49.37%	-47.81%	-16.51%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$6.954M	$5.553M	$3.468M
YoY Change	40.77%	60.12%	-26.63%
Income Tax	$1.202M	$940.0K	$486.0K
% Of Pretax Income	17.29%	16.93%	14.01%
Net Earnings	$5.752M	$4.613M	$2.982M
YoY Change	38.0%	54.69%	-25.34%
Net Earnings / Revenue	49.35%	42.33%	27.74%
Basic Earnings Per Share	$0.94	$0.74	$0.46
Diluted Earnings Per Share	$0.94	$0.74	$0.46
COMMON SHARES
Basic Shares Outstanding	6.170M	6.205M	6.490M
Diluted Shares Outstanding

Balance Sheet

Concept	2021 Q3	2021 Q2	2020 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$11.73M	$13.81M	$13.32M
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	$9.823M	$9.896M	$9.955M
YoY Change	-2.01%	-0.59%	10.46%
Goodwill	$5.848M	$5.848M	$5.848M
YoY Change	0.0%	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	$1.644B	$1.662B	$1.434B
YoY Change	14.53%	15.9%	12.94%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$0.00	$0.00	$100.0K
YoY Change	-100.0%	-100.0%	0.0%
Accrued Expenses	$1.800M	$1.900M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.800M	$1.900M	$100.0K
YoY Change	1700.0%	1800.0%	-95.45%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$18.60M	$18.90M	$18.20M
YoY Change	-5.1%	3.85%	33.82%
Total Long-Term Liabilities	$18.60M	$18.90M	$18.20M
YoY Change	-5.1%	3.85%	33.82%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.800M	$1.900M	$100.0K
Total Long-Term Liabilities	$18.60M	$18.90M	$18.20M
Total Liabilities	$1.453B	$1.470B	$1.238B
YoY Change	17.83%	18.78%	14.03%
SHAREHOLDERS EQUITY
Retained Earnings	$188.7M	$185.6M	$186.7M
YoY Change	-1.16%	-0.62%	3.58%
Common Stock	$7.621M	$7.713M	$8.112M
YoY Change	-6.05%	-4.92%	-0.25%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$190.9M	$191.2M	$195.8M
YoY Change
Total Liabilities & Shareholders Equity	$1.644B	$1.662B	$1.434B
YoY Change	14.53%	15.9%	12.94%

Cashflow Statement

Concept	2021 Q3	2021 Q2	2020 Q2
OPERATING ACTIVITIES
Net Income	$5.752M	$4.613M	$2.982M
YoY Change	38.0%	54.69%	-25.34%
Depreciation, Depletion And Amortization	$150.0K	$170.0K	$170.0K
YoY Change	-16.67%	0.0%	-10.53%
Cash From Operating Activities	$6.470M	$4.460M	$1.210M
YoY Change	73.46%	268.6%	-57.69%
INVESTING ACTIVITIES
Capital Expenditures	-$80.00K	-$110.0K	-$70.00K
YoY Change	-66.67%	57.14%	-80.56%
Acquisitions
YoY Change
Other Investing Activities	$11.16M	-$84.58M	-$107.3M
YoY Change	-6300.0%	-21.18%	1721.9%
Cash From Investing Activities	$11.06M	-$84.67M	-$107.4M
YoY Change	-2672.09%	-21.14%	1615.18%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-19.62M	81.36M	107.1M
YoY Change	225.37%	-24.02%	1947.42%
NET CHANGE
Cash From Operating Activities	6.470M	4.460M	1.210M
Cash From Investing Activities	11.06M	-84.67M	-107.4M
Cash From Financing Activities	-19.62M	81.36M	107.1M
Net Change In Cash	-2.090M	1.150M	920.0K
YoY Change	-23.44%	25.0%	-49.73%
FREE CASH FLOW
Cash From Operating Activities	$6.470M	$4.460M	$1.210M
Capital Expenditures	-$80.00K	-$110.0K	-$70.00K
Free Cash Flow	$6.550M	$4.570M	$1.280M
YoY Change	64.99%	257.03%	-60.25%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2021Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
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	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	1000	USD
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CY2021Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	11848000	USD
CY2020Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	8570000	USD
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	17016000	USD
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	3693000	USD
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	4219000	USD
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	1003000	USD
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	803000	USD
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	21779000	USD
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	22138000	USD
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	162000	USD
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1081000	USD
	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Short Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm	1527000	USD
	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Short Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm	2313000	USD
	us-gaap	Interest Expense InterestExpense	1689000	USD
	us-gaap	Interest Expense InterestExpense	3394000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	20090000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	18744000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	54000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1831000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	20036000	USD
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	16913000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	416000	USD
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	440000	USD
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	211000	USD
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	251000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	857000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	559000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	5000	USD
	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	82000	USD
	us-gaap	Noninterest Income NoninterestIncome	4275000	USD
	us-gaap	Noninterest Income NoninterestIncome	3880000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	7858000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	7371000	USD
	us-gaap	Occupancy Net OccupancyNet	931000	USD
	us-gaap	Occupancy Net OccupancyNet	908000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1564000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1597000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	176000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	40000	USD
	nksh	Net Costs Of Other Real Estate Owned NetCostsOfOtherRealEstateOwned	38000	USD
	nksh	Net Costs Of Other Real Estate Owned NetCostsOfOtherRealEstateOwned	18000	USD
	nksh	Tax Other TaxOther	692000	USD
	nksh	Tax Other TaxOther	678000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1724000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1932000	USD
	us-gaap	Noninterest Expense NoninterestExpense	12983000	USD
	us-gaap	Noninterest Expense NoninterestExpense	12544000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	11328000	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 Tax Expense Benefit IncomeTaxExpenseBenefit	1949000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1288000	USD
	us-gaap	Net Income Loss NetIncomeLoss	9379000	USD
	us-gaap	Net Income Loss NetIncomeLoss	6961000	USD
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.49
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.07
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.49
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.07
	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	6310347
	us-gaap	Weighted Average Number Of Share Outstanding Basic And Diluted WeightedAverageNumberOfShareOutstandingBasicAndDiluted	6489574
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.70
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.67
	us-gaap	Net Income Loss NetIncomeLoss	9379000	USD
	us-gaap	Net Income Loss NetIncomeLoss	6961000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-5074000	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 Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	4000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	65000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5078000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	9442000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	4301000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	16403000	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
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	189069000	USD
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	4613000	USD
CY2021Q2	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	5363000	USD
CY2021Q2	us-gaap	Dividends Common Stock DividendsCommonStock	4319000	USD
CY2021Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7235000	USD
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	191235000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	183726000	USD
	us-gaap	Net Income Loss NetIncomeLoss	6961000	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
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	200607000	USD
	us-gaap	Net Income Loss NetIncomeLoss	9379000	USD
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	9354000	USD
	us-gaap	Dividends Common Stock DividendsCommonStock	4319000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5078000	USD
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	191235000	USD
	us-gaap	Net Income Loss NetIncomeLoss	9379000	USD
	us-gaap	Net Income Loss NetIncomeLoss	6961000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	54000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1831000	USD
	us-gaap	Depreciation Depreciation	325000	USD
	us-gaap	Depreciation Depreciation	351000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-846000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-621000	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-0	USD
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	2000	USD
	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	5000	USD
	us-gaap	Availableforsale Securities Gross Realized Gain Loss Excluding Other Than Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments	82000	USD
	nksh	Losses And Write Downs On Other Real Estate Owned LossesAndWriteDownsOnOtherRealEstateOwned	-26000	USD
	nksh	Losses And Write Downs On Other Real Estate Owned LossesAndWriteDownsOnOtherRealEstateOwned	13000	USD
	nksh	Gain Loss On Sale Of Repossessed Assets GainLossOnSaleOfRepossessedAssets	-0	USD
	nksh	Gain Loss On Sale Of Repossessed Assets GainLossOnSaleOfRepossessedAssets	-1000	USD
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	416000	USD
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	440000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	9553000	USD
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	16635000	USD
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	10408000	USD
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	15424000	USD
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	211000	USD
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	251000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	247000	USD
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	512000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-384000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	835000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-8000	USD
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-27000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	227000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	30000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	11209000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6422000	USD
	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	-29983000	USD
	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	3630000	USD
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	29308000	USD
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	94870000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	107591000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	138121000	USD
	us-gaap	Increase Decrease Of Restricted Investments IncreaseDecreaseOfRestrictedInvestments	-434000	USD
	us-gaap	Increase Decrease Of Restricted Investments IncreaseDecreaseOfRestrictedInvestments	59000	USD
	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	9446000	USD
	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	18000	USD
	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	3668000	USD
	us-gaap	Proceeds From Principal Repayments On Loans And Leases Held For Investment ProceedsFromPrincipalRepaymentsOnLoansAndLeasesHeldForInvestment	107000	USD
	nksh	Proceeds From Loans And Leases Originations And Principal Collections ProceedsFromLoansAndLeasesOriginationsAndPrincipalCollections	-31264000	USD
	nksh	Proceeds From Loans And Leases Originations And Principal Collections ProceedsFromLoansAndLeasesOriginationsAndPrincipalCollections	-58184000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	570000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	72000	USD
	nksh	Proceeds From Sale Of Repossessed Assets ProceedsFromSaleOfRepossessedAssets	11000	USD
	nksh	Proceeds From Sale Of Repossessed Assets ProceedsFromSaleOfRepossessedAssets	30000	USD
	us-gaap	Proceeds From Recoveries Of Loan Previously Charged Off ProceedsFromRecoveriesOfLoanPreviouslyChargedOff	128000	USD
	us-gaap	Proceeds From Recoveries Of Loan Previously Charged Off ProceedsFromRecoveriesOfLoanPreviouslyChargedOff	154000	USD
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	5000000	USD
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	-0	USD
	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	186000	USD
	us-gaap	Payments For Proceeds From Productive Assets PaymentsForProceedsFromProductiveAssets	1385000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-149351000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-98904000	USD
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-1250000	USD
	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-10146000	USD
	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	153731000	USD
	us-gaap	Increase Decrease In Other Deposits IncreaseDecreaseInOtherDeposits	110001000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	9354000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	-0	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	4319000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	4348000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	138808000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	95507000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	666000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	3025000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	13147000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	10290000	USD
CY2021Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	13813000	USD
CY2020Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	13315000	USD
	us-gaap	Interest Paid Net InterestPaidNet	1697000	USD
	us-gaap	Interest Paid Net InterestPaidNet	3421000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1310000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2115000	USD
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	586000	USD
	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	540000	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	50000	USD
	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	0	USD
	nksh	Loans Transferred To Repossessed Assets LoansTransferredToRepossessedAssets	11000	USD
	nksh	Loans Transferred To Repossessed Assets LoansTransferredToRepossessedAssets	4000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-6428000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	11951000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	USD
CY2021Q2	nksh	Number Of Loan Modifications For Covid19 Related Accommodations NumberOfLoanModificationsForCOVID19RelatedAccommodations	5	pure
	nksh	Financing Receivable Number Of Ppp Loans FinancingReceivableNumberOfPPPLoans	1259	pure
	nksh	Financing Receivable Ppp Loans Amount FinancingReceivablePPPLoansAmount	83023000	USD
CY2021Q2	nksh	Financing Receivable Number Of Ppp Loans Forgiven Or Paid Off FinancingReceivableNumberOfPPPLoansForgivenOrPaidOff	674	pure
CY2021Q2	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	807206000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	770027000	USD
CY2021Q2	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	2012000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	1228000	USD
CY2021Q2	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	805194000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	768799000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	8481000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	586000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	128000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	54000	USD
CY2021Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	8077000	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
	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
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	6863000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	720000	USD
CY2020	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	347000	USD
CY2020	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1991000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	8481000	USD
CY2021Q2	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	0	USD
CY2021Q2	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	8077000	USD
CY2021Q2	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	8077000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	75000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	8406000	USD
CY2020Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	8481000	USD
	nksh	Ratio Of Allowance For Loan Losses To End Of Period Loans RatioOfAllowanceForLoanLossesToEndOfPeriodLoans	0.0100	pure
	nksh	Ratio Of Allowance For Loan Losses To End Of Period Loans RatioOfAllowanceForLoanLossesToEndOfPeriodLoans	0.0105	pure
CY2020	nksh	Ratio Of Allowance For Loan Losses To End Of Period Loans RatioOfAllowanceForLoanLossesToEndOfPeriodLoans	0.0110	pure
	nksh	Ratio Of Net Chargeoffs To Average Loans RatioOfNetChargeoffsToAverageLoans	0.0012	pure
	nksh	Ratio Of Net Chargeoffs To Average Loans RatioOfNetChargeoffsToAverageLoans	0.0010	pure
CY2020	nksh	Ratio Of Net Chargeoffs To Average Loans RatioOfNetChargeoffsToAverageLoans	0.0005	pure
	nksh	Ratio Of Allowance For Loan Losses To End Of Period Loans Excluding Ppp Loans RatioOfAllowanceForLoanLossesToEndOfPeriodLoansExcludingPPPLoans	0.0104	pure
CY2020	nksh	Ratio Of Allowance For Loan Losses To End Of Period Loans Excluding Ppp Loans RatioOfAllowanceForLoanLossesToEndOfPeriodLoansExcludingPPPLoans	0.0116	pure
	nksh	Ratio Of Allowance For Loan Losses To End Of Period Loans Excluding Ppp Loans RatioOfAllowanceForLoanLossesToEndOfPeriodLoansExcludingPPPLoans	0.0113	pure
CY2021Q2	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	0	USD
CY2020Q4	nksh	Nonperforming Assets NonperformingAssets	5238000	USD
CY2021Q2	nksh	Assets Ratio Of Nonperforming Assets To Loans Net Of Unearned Income And Deferred Fees Plus Oreo AssetsRatioOfNonperformingAssetsToLoansNetOfUnearnedIncomeAndDeferredFeesPlusOreo	0.0060	pure
CY2020Q2	nksh	Assets Ratio Of Nonperforming Assets To Loans Net Of Unearned Income And Deferred Fees Plus Oreo AssetsRatioOfNonperformingAssetsToLoansNetOfUnearnedIncomeAndDeferredFeesPlusOreo	0.0068	pure
CY2020Q4	nksh	Assets Ratio Of Nonperforming Assets To Loans Net Of Unearned Income And Deferred Fees Plus Oreo AssetsRatioOfNonperformingAssetsToLoansNetOfUnearnedIncomeAndDeferredFeesPlusOreo	0.0068	pure
CY2021Q2	nksh	Ratio Of Allowance For Loan Losses To Nonperforming Loans RatioOfAllowanceForLoanLossesToNonperformingLoans	2.1133	pure
CY2020Q2	nksh	Ratio Of Allowance For Loan Losses To Nonperforming Loans RatioOfAllowanceForLoanLossesToNonperformingLoans	2.1692	pure
CY2020Q4	nksh	Ratio Of Allowance For Loan Losses To Nonperforming Loans RatioOfAllowanceForLoanLossesToNonperformingLoans	2.3015	pure
CY2021Q2	nksh	Loan Receivable Nonaccrual LoanReceivableNonaccrual	713000	USD
CY2020Q2	nksh	Loan Receivable Nonaccrual LoanReceivableNonaccrual	943000	USD
CY2020Q4	nksh	Loan Receivable Nonaccrual LoanReceivableNonaccrual	846000	USD
CY2021Q2	nksh	Nonaccrual Restructured Loans NonaccrualRestructuredLoans	3109000	USD
CY2020Q2	nksh	Nonaccrual Restructured Loans NonaccrualRestructuredLoans	2887000	USD
CY2020Q4	nksh	Nonaccrual Restructured Loans NonaccrualRestructuredLoans	2839000	USD
CY2021Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	3822000	USD
CY2020Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	3830000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	3685000	USD
CY2021Q2	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	1007000	USD
CY2020Q2	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	1553000	USD
CY2020Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	1553000	USD
CY2021Q2	nksh	Nonperforming Assets NonperformingAssets	4829000	USD
CY2020Q2	nksh	Nonperforming Assets NonperformingAssets	5383000	USD
CY2021Q2	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	28000	USD
CY2020Q2	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	237000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	17000	USD
CY2021Q2	nksh	Ratio Of Loans Past Due90 Days Or More And Still Accruing To Loans RatioOfLoansPastDue90DaysOrMoreAndStillAccruingToLoans	0.0000	pure
CY2020Q2	nksh	Ratio Of Loans Past Due90 Days Or More And Still Accruing To Loans RatioOfLoansPastDue90DaysOrMoreAndStillAccruingToLoans	0.0003	pure
CY2020Q4	nksh	Ratio Of Loans Past Due90 Days Or More And Still Accruing To Loans RatioOfLoansPastDue90DaysOrMoreAndStillAccruingToLoans	0.0000	pure
CY2021Q2	nksh	Accruing Restructured Loans AccruingRestructuredLoans	3011000	USD
CY2020Q2	nksh	Accruing Restructured Loans AccruingRestructuredLoans	1453000	USD
CY2020Q4	nksh	Accruing Restructured Loans AccruingRestructuredLoans	1410000	USD
CY2021Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	6774000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	4151000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	3858000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	1076000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	1045000	USD
CY2021Q2	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	6774000	USD
CY2020Q2	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	5227000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	4903000	USD
CY2021Q2	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	-0	USD
CY2020Q2	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	104000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	75000	USD
CY2021Q2	nksh	Impaired Loans Net Of Allowance ImpairedLoansNetOfAllowance	6774000	USD
CY2020Q2	nksh	Impaired Loans Net Of Allowance ImpairedLoansNetOfAllowance	5123000	USD
CY2020Q4	nksh	Impaired Loans Net Of Allowance ImpairedLoansNetOfAllowance	4828000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	6796000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	5263000	USD
CY2020	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	5093000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	105000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	29000	USD
CY2020	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	54000	USD
CY2021Q2	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	7374000	USD
CY2021Q2	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	6774000	USD
CY2021Q2	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	6774000	USD
CY2021Q2	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	0	USD
CY2021Q2	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	0	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	5453000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	4903000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	3858000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	1045000	USD
CY2020Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	75000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	6796000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	105000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	5263000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	29000	USD
CY2020	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	5093000	USD
CY2020	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	54000	USD
CY2021Q2	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	28000	USD
CY2021Q2	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	3822000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	17000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	3685000	USD
CY2021Q2	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	6120000	USD
CY2020Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	4249000	USD
CY2020Q2	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	4340000	USD
CY2021Q2	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	2	pure
CY2020Q4	nksh	Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses ContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses	498000	USD
CY2021Q2	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	2	pure
CY2021Q2	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	2724000	USD
CY2021Q2	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	2724000	USD
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	3	pure
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	3	pure
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	2826000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	2826000	USD
CY2021Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	607517000	USD
CY2021Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	14191000	USD
CY2021Q2	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	3952000	USD
CY2021Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	617756000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	530075000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	17170000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	503000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	546742000	USD
CY2021Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	1377000	USD
CY2021Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	1396000	USD
CY2021Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	5431000	USD
CY2021Q2	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	5550000	USD
CY2021Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	229995000	USD
CY2021Q2	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	232759000	USD
CY2021Q2	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	370714000	USD
CY2021Q2	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	378051000	USD
CY2021Q2	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	607517000	USD
CY2021Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	617756000	USD
CY2021Q2	nksh	Continuous Unrealized Loss Position Less Than Twelve Months Fair Value ContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	154185000	USD
CY2021Q2	nksh	Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses ContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses	3641000	USD
CY2021Q2	nksh	Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value ContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	12896000	USD
CY2021Q2	nksh	Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses ContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses	311000	USD
CY2020Q4	nksh	Continuous Unrealized Loss Position Less Than Twelve Months Fair Value ContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	69967000	USD
CY2020Q4	nksh	Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value ContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	4695000	USD
CY2020Q4	nksh	Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses ContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses	5000	USD
CY2021Q2	nksh	Number Of Temporarily Impaired Securities NumberOfTemporarilyImpairedSecurities	145	pure
CY2021Q2	nksh	Available For Sale And Held To Maturity Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleAndHeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	167081000	USD
CY2021Q2	nksh	Continuous Unrealized Loss Position Aggregate Losses ContinuousUnrealizedLossPositionAggregateLosses	3952000	USD
CY2021Q2	nksh	Number Of Temporarily Impaired Securities Greater Than Twelve Months NumberOfTemporarilyImpairedSecuritiesGreaterThanTwelveMonths	8	pure
CY2021Q2	nksh	Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value ContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	12896000	USD
CY2021Q2	nksh	Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses ContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses	311000	USD
CY2021Q2	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	617756000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	546742000	USD
CY2020Q4	nksh	Impaired Loans Net Fair Value Disclosure ImpairedLoansNetFairValueDisclosure	970000	USD
CY2021Q2	nksh	Other Real Estate Fair Value Disclosure OtherRealEstateFairValueDisclosure	1007000	USD
CY2020Q4	nksh	Other Real Estate Fair Value Disclosure OtherRealEstateFairValueDisclosure	1553000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-5074000	USD
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-5074000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	4000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	4000	USD
CY2021Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1568000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1278000	USD
CY2021Q2	nksh	Revenue From Contract With Customer Including Assessed Tax Outside Of Topic606 RevenueFromContractWithCustomerIncludingAssessedTaxOutsideOfTopic606	373000	USD
CY2020Q2	nksh	Revenue From Contract With Customer Including Assessed Tax Outside Of Topic606 RevenueFromContractWithCustomerIncludingAssessedTaxOutsideOfTopic606	467000	USD
CY2021Q2	us-gaap	Noninterest Income NoninterestIncome	1941000	USD
CY2020Q2	us-gaap	Noninterest Income NoninterestIncome	1745000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3326000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	2737000	USD
	nksh	Revenue From Contract With Customer Including Assessed Tax Outside Of Topic606 RevenueFromContractWithCustomerIncludingAssessedTaxOutsideOfTopic606	949000	USD
	nksh	Revenue From Contract With Customer Including Assessed Tax Outside Of Topic606 RevenueFromContractWithCustomerIncludingAssessedTaxOutsideOfTopic606	1143000	USD
	us-gaap	Noninterest Income NoninterestIncome	4275000	USD
	us-gaap	Noninterest Income NoninterestIncome	3880000	USD
CY2021Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1844000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1998000	USD
CY2021Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y5M1D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y9M21D
CY2021Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0304	pure
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0304	pure
CY2021Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	94000	USD
CY2020Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	92000	USD
CY2021Q2	us-gaap	Short Term Lease Cost ShortTermLeaseCost	0	USD
CY2020Q2	us-gaap	Short Term Lease Cost ShortTermLeaseCost	0	USD
CY2021Q2	us-gaap	Lease Cost LeaseCost	94000	USD
CY2020Q2	us-gaap	Lease Cost LeaseCost	92000	USD
CY2021Q2	us-gaap	Operating Lease Payments OperatingLeasePayments	92000	USD
CY2020Q2	us-gaap	Operating Lease Payments OperatingLeasePayments	91000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	187000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	185000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1000	USD
	us-gaap	Lease Cost LeaseCost	188000	USD
	us-gaap	Lease Cost LeaseCost	186000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	184000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	182000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	359000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Two LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo	349000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Three LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree	352000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Four LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour	291000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive	219000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due After Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive	495000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	2065000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	199000	USD

Files In Submission

Name	View Source	Status
0001437749-21-019812-index-headers.html	Edgar Link	pending
0001437749-21-019812-index.html	Edgar Link	pending
0001437749-21-019812.txt	Edgar Link	pending
0001437749-21-019812-xbrl.zip	Edgar Link	pending
ex_267815.htm	Edgar Link	pending
ex_267816.htm	Edgar Link	pending
ex_267817.htm	Edgar Link	pending
ex_267818.htm	Edgar Link	pending
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nksh-20210630_lab.xml	Edgar Link	unprocessable
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nksh20210630_10q.htm	Edgar Link	pending
nksh20210630_10q_htm.xml	Edgar Link	completed
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$NKSH
NATIONAL BANKSHARES INC Stock $nksh

2021 Q3 Form 10-Q Financial Statement

#000143774921019812 Filed on August 13, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NKSH NATIONAL BANKSHARES INC Stock $nksh

2021 Q3 Form 10-Q Financial Statement

#000143774921019812 Filed on August 13, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NKSH
NATIONAL BANKSHARES INC Stock $nksh