FNCB Bancorp, Inc.

$ Overview Financials Valuation SEC Filings Company Website

2023 Q4 Form 10-Q Financial Statement

#000143774923030217 Filed on November 03, 2023

Income Statement

Concept	2023 Q4	2023 Q3

Balance Sheet

Concept	2023 Q4	2023 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$107.9M	$77.07M
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	$14.55M	$14.79M
YoY Change	-6.85%	-4.74%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$1.881B	$1.827B
YoY Change	7.76%	7.17%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.355M	$1.000M
YoY Change	692.4%	890.1%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$1.355M	$1.000M
YoY Change	692.4%	890.1%
LONG-TERM LIABILITIES
Long-Term Debt	$200.3M	$10.30M
YoY Change	9.82%	-86.45%
Other Long-Term Liabilities	$15.78M	$18.90M
YoY Change	-32.58%	33.22%
Total Long-Term Liabilities	$216.1M	$29.20M
YoY Change	5.0%	-67.63%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.355M	$1.000M
Total Long-Term Liabilities	$216.1M	$29.20M
Total Liabilities	$1.746B	$1.709B
YoY Change	7.37%	7.29%
SHAREHOLDERS EQUITY
Retained Earnings	$71.78M	$70.22M
YoY Change	10.65%	13.74%
Common Stock	$103.0M	$102.8M
YoY Change	0.86%	0.78%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$134.6M	$117.8M
YoY Change
Total Liabilities & Shareholders Equity	$1.881B	$1.827B
YoY Change	7.76%	7.17%

Cashflow Statement

Concept	2023 Q4	2023 Q3

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	12149000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	14193000	usd
CY2023Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.25
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.25
CY2023Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000
CY2023Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2023Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0
CY2023Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.25
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.25
CY2023Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	50000000
CY2023Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	19780317
CY2023Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	19780317
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	19681644
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	19681644
CY2022Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.09
CY2022Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	4712000	usd
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.09
CY2023Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	2381000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.24
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	15545000	usd
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.27
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	1904000	usd
CY2022Q4	fncb	Number Of Non Government Securities Of Any Individual Issuer Exceeding10 Percent Of Shareholders Equity NumberOfNonGovernmentSecuritiesOfAnyIndividualIssuerExceeding10PercentOfShareholdersEquity	0	pure
CY2022Q3	fncb	Financing Receivable Modifications Number Of Contracts FinancingReceivableModificationsNumberOfContracts	0	pure
	fncb	Number Of Real Estate Properties Foreclosed NumberOfRealEstatePropertiesForeclosed	0	pure
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2023Q3	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2022Q3	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2022Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	usd
	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	0
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2023-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-38408
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	PA
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	23-2900790
	dei	Entity Address Address Line1 EntityAddressAddressLine1	102 E. Drinker St.
	dei	Entity Address City Or Town EntityAddressCityOrTown	Dunmore
	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	18512
	dei	City Area Code CityAreaCode	570
	dei	Local Phone Number LocalPhoneNumber	346-7667
	dei	Security12b Title Security12bTitle	Common stock, $1.25 par value
	dei	Trading Symbol TradingSymbol	FNCB
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Non-accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	true
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2023Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	19783031
CY2023Q3	us-gaap	Cash And Due From Banks CashAndDueFromBanks	42081000	usd
CY2022Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	26588000	usd
CY2023Q3	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	34990000	usd
CY2022Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	15328000	usd
CY2023Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	77071000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	41916000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	437142000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	476091000	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	6104000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	7717000	usd
CY2023Q3	us-gaap	Restricted Investments RestrictedInvestments	8842000	usd
CY2022Q4	us-gaap	Restricted Investments RestrictedInvestments	8545000	usd
CY2023Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	0	usd
CY2022Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	60000	usd
CY2023Q3	us-gaap	Notes Receivable Net NotesReceivableNet	1193603000	usd
CY2022Q4	us-gaap	Notes Receivable Net NotesReceivableNet	1110124000	usd
CY2023Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	14790000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	15616000	usd
CY2023Q3	us-gaap	Interest Receivable InterestReceivable	6599000	usd
CY2022Q4	us-gaap	Interest Receivable InterestReceivable	5957000	usd
CY2023Q3	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	37111000	usd
CY2022Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	36499000	usd
CY2023Q3	us-gaap	Other Assets OtherAssets	45511000	usd
CY2022Q4	us-gaap	Other Assets OtherAssets	43005000	usd
CY2023Q3	us-gaap	Assets Assets	1826773000	usd
CY2022Q4	us-gaap	Assets Assets	1745530000	usd
CY2023Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	297740000	usd
CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	305850000	usd
CY2023Q3	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	1204635000	usd
CY2022Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	1114797000	usd
CY2023Q3	us-gaap	Deposits Deposits	1502375000	usd
CY2022Q4	us-gaap	Deposits Deposits	1420647000	usd
CY2023Q3	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	176423000	usd
CY2022Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	172050000	usd
CY2023Q3	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	10310000	usd
CY2022Q4	us-gaap	Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust	10310000	usd
CY2023Q3	us-gaap	Long Term Debt LongTermDebt	186733000	usd
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	182360000	usd
CY2023Q3	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	1001000	usd
CY2022Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	171000	usd
CY2023Q3	us-gaap	Other Liabilities OtherLiabilities	18862000	usd
CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	23403000	usd
CY2023Q3	us-gaap	Liabilities Liabilities	1708971000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	1626581000	usd
CY2023Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2022Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	usd
CY2023Q3	us-gaap	Common Stock Value CommonStockValue	24725000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	24602000	usd
CY2023Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	78050000	usd
CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	77502000	usd
CY2023Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	70221000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	64873000	usd
CY2023Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-55194000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-48028000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	117802000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	118949000	usd
CY2023Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1826773000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1745530000	usd
CY2023Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	17224000	usd
CY2022Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	12270000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	47642000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	33472000	usd
CY2023Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	3063000	usd
CY2022Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	2633000	usd
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	9204000	usd
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	7425000	usd
CY2023Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	539000	usd
CY2022Q3	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	691000	usd
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	1670000	usd
	us-gaap	Interest Income Securities Tax Exempt InterestIncomeSecuritiesTaxExempt	1961000	usd
CY2023Q3	us-gaap	Dividend Income Operating DividendIncomeOperating	248000	usd
CY2022Q3	us-gaap	Dividend Income Operating DividendIncomeOperating	163000	usd
	us-gaap	Dividend Income Operating DividendIncomeOperating	744000	usd
	us-gaap	Dividend Income Operating DividendIncomeOperating	353000	usd
CY2023Q3	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	3850000	usd
CY2022Q3	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	3487000	usd
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	11618000	usd
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	9739000	usd
CY2023Q3	fncb	Interest On Interest Bearing Deposits In Other Banks InterestOnInterestBearingDepositsInOtherBanks	243000	usd
CY2022Q3	fncb	Interest On Interest Bearing Deposits In Other Banks InterestOnInterestBearingDepositsInOtherBanks	19000	usd
	fncb	Interest On Interest Bearing Deposits In Other Banks InterestOnInterestBearingDepositsInOtherBanks	672000	usd
	fncb	Interest On Interest Bearing Deposits In Other Banks InterestOnInterestBearingDepositsInOtherBanks	34000	usd
CY2023Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	21317000	usd
CY2022Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	15776000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	59932000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	43245000	usd
CY2023Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	6446000	usd
CY2022Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1001000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	16968000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	1671000	usd
CY2023Q3	fncb	Interest Expense Federal Reserve Bank Advances Longterm InterestExpenseFederalReserveBankAdvancesLongterm	205000	usd
CY2022Q3	fncb	Interest Expense Federal Reserve Bank Advances Longterm InterestExpenseFederalReserveBankAdvancesLongterm	0	usd
	fncb	Interest Expense Federal Reserve Bank Advances Longterm InterestExpenseFederalReserveBankAdvancesLongterm	297000	usd
	fncb	Interest Expense Federal Reserve Bank Advances Longterm InterestExpenseFederalReserveBankAdvancesLongterm	0	usd
CY2023Q3	fncb	Interest Expense Federal Home Loan Bank InterestExpenseFederalHomeLoanBank	2268000	usd
CY2022Q3	fncb	Interest Expense Federal Home Loan Bank InterestExpenseFederalHomeLoanBank	736000	usd
	fncb	Interest Expense Federal Home Loan Bank InterestExpenseFederalHomeLoanBank	6715000	usd
	fncb	Interest Expense Federal Home Loan Bank InterestExpenseFederalHomeLoanBank	1009000	usd
CY2023Q3	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	191000	usd
CY2022Q3	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	99000	usd
	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	531000	usd
	us-gaap	Interest Expense Junior Subordinated Debentures InterestExpenseJuniorSubordinatedDebentures	220000	usd
CY2023Q3	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	2664000	usd
CY2022Q3	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	835000	usd
	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	7543000	usd
	us-gaap	Interest Expense Long Term Debt InterestExpenseLongTermDebt	1229000	usd
CY2023Q3	us-gaap	Interest Expense InterestExpense	9110000	usd
CY2022Q3	us-gaap	Interest Expense InterestExpense	1836000	usd
	us-gaap	Interest Expense InterestExpense	24511000	usd
	us-gaap	Interest Expense InterestExpense	2900000	usd
CY2023Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	12207000	usd
CY2022Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	13940000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	35421000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	40345000	usd
CY2023Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-270000	usd
CY2022Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	513000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1504000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1334000	usd
CY2023Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	12477000	usd
CY2022Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	13427000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	33917000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	39011000	usd
CY2023Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1132000	usd
CY2022Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1133000	usd
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3319000	usd
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	3248000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	0	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	0	usd
	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	252000	usd
	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	-35000	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-233000	usd
CY2022Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	86000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-1773000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-121000	usd
CY2023Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1000	usd
CY2022Q3	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	91000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	123000	usd
CY2023Q3	fncb	Loan Related Fees LoanRelatedFees	64000	usd
CY2022Q3	fncb	Loan Related Fees LoanRelatedFees	54000	usd
	fncb	Loan Related Fees LoanRelatedFees	235000	usd
	fncb	Loan Related Fees LoanRelatedFees	161000	usd
CY2023Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	210000	usd
CY2022Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	200000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	612000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	542000	usd
CY2023Q3	fncb	Revenue From Merchant Services RevenueFromMerchantServices	146000	usd
CY2022Q3	fncb	Revenue From Merchant Services RevenueFromMerchantServices	173000	usd
	fncb	Revenue From Merchant Services RevenueFromMerchantServices	464000	usd
	fncb	Revenue From Merchant Services RevenueFromMerchantServices	544000	usd
CY2023Q3	fncb	Revenue From Wealth Management Services RevenueFromWealthManagementServices	237000	usd
CY2022Q3	fncb	Revenue From Wealth Management Services RevenueFromWealthManagementServices	109000	usd
	fncb	Revenue From Wealth Management Services RevenueFromWealthManagementServices	720000	usd
	fncb	Revenue From Wealth Management Services RevenueFromWealthManagementServices	345000	usd
CY2023Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	137000	usd
CY2022Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	295000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	482000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	781000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	1694000	usd
CY2022Q3	us-gaap	Noninterest Income NoninterestIncome	2141000	usd
	us-gaap	Noninterest Income NoninterestIncome	4313000	usd
	us-gaap	Noninterest Income NoninterestIncome	5588000	usd
CY2023Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4935000	usd
CY2022Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	4581000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	14859000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	13758000	usd
CY2023Q3	us-gaap	Occupancy Net OccupancyNet	516000	usd
CY2022Q3	us-gaap	Occupancy Net OccupancyNet	517000	usd
	us-gaap	Occupancy Net OccupancyNet	1587000	usd
	us-gaap	Occupancy Net OccupancyNet	1512000	usd
CY2023Q3	us-gaap	Equipment Expense EquipmentExpense	229000	usd
CY2022Q3	us-gaap	Equipment Expense EquipmentExpense	314000	usd
	us-gaap	Equipment Expense EquipmentExpense	733000	usd
	us-gaap	Equipment Expense EquipmentExpense	954000	usd
CY2023Q3	us-gaap	Advertising Expense AdvertisingExpense	198000	usd
CY2022Q3	us-gaap	Advertising Expense AdvertisingExpense	202000	usd
	us-gaap	Advertising Expense AdvertisingExpense	595000	usd
	us-gaap	Advertising Expense AdvertisingExpense	561000	usd
CY2023Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	1034000	usd
CY2022Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	974000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	2984000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	3046000	usd
CY2023Q3	fncb	Regulatory Assessments RegulatoryAssessments	283000	usd
CY2022Q3	fncb	Regulatory Assessments RegulatoryAssessments	230000	usd
	fncb	Regulatory Assessments RegulatoryAssessments	808000	usd
	fncb	Regulatory Assessments RegulatoryAssessments	651000	usd
CY2023Q3	us-gaap	General Insurance Expense GeneralInsuranceExpense	175000	usd
CY2022Q3	us-gaap	General Insurance Expense GeneralInsuranceExpense	167000	usd
	us-gaap	General Insurance Expense GeneralInsuranceExpense	518000	usd
	us-gaap	General Insurance Expense GeneralInsuranceExpense	477000	usd
CY2023Q3	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	264000	usd
CY2022Q3	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	375000	usd
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	676000	usd
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	1091000	usd
CY2023Q3	us-gaap	Professional Fees ProfessionalFees	265000	usd
CY2022Q3	us-gaap	Professional Fees ProfessionalFees	297000	usd
	us-gaap	Professional Fees ProfessionalFees	781000	usd
	us-gaap	Professional Fees ProfessionalFees	837000	usd
CY2023Q3	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	248000	usd
CY2022Q3	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	229000	usd
	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	416000	usd
	us-gaap	Noninterest Expense Directors Fees NoninterestExpenseDirectorsFees	388000	usd
CY2023Q3	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-235000	usd
CY2022Q3	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	338000	usd
	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	-729000	usd
	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	461000	usd
CY2023Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	537000	usd
CY2022Q3	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	usd
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	537000	usd
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	usd
CY2023Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	851000	usd
CY2022Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	808000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	2558000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	2072000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	9300000	usd
CY2022Q3	us-gaap	Noninterest Expense NoninterestExpense	9032000	usd
	us-gaap	Noninterest Expense NoninterestExpense	26323000	usd
	us-gaap	Noninterest Expense NoninterestExpense	25808000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	4871000	usd
CY2022Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	6536000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	11907000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	18791000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	709000	usd
CY2022Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1101000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2277000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3265000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	4162000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	5435000	usd
	us-gaap	Net Income Loss NetIncomeLoss	9630000	usd
	us-gaap	Net Income Loss NetIncomeLoss	15526000	usd
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.21
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.49
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.79
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.21
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.28
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.79
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.09
CY2022Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.09
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.27
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.24
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19776342
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19687766
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19724956
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19765814
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19776360
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19697047
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19727790
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19786855
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	4162000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	5435000	usd
	us-gaap	Net Income Loss NetIncomeLoss	9630000	usd
	us-gaap	Net Income Loss NetIncomeLoss	15526000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-12457000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-22652000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-9526000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-74938000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-2616000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-4757000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-2000000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-15737000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-9841000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-17895000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-7526000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-59201000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-0	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	252000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-35000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	53000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-7000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-0	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-0	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	199000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-28000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent	1118000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent	214000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent	708000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Before Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTaxParent	880000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	235000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	45000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	149000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	185000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	883000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	169000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	559000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	695000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8958000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-17726000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-7166000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-58478000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-4796000	usd
CY2022Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-12291000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2464000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-42952000	usd
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	125512000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	5435000	usd
CY2022Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1772000	usd
CY2022Q3	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	112000	usd
CY2022Q3	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	106000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	135000	usd
CY2022Q3	fncb	Stock Issued During Period Value Dividend Reinvestment Plan Or Optional Cash Purchase Plan StockIssuedDuringPeriodValueDividendReinvestmentPlanOrOptionalCashPurchasePlan	2000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-17726000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	111592000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	124059000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	4162000	usd
CY2023Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1781000	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	142000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	17000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	163000	usd
CY2023Q3	fncb	Stock Issued During Period Value Dividend Reinvestment Plan Or Optional Cash Purchase Plan StockIssuedDuringPeriodValueDividendReinvestmentPlanOrOptionalCashPurchasePlan	-2000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8958000	usd
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	3636000	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	135000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	117802000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	162457000	usd
	us-gaap	Net Income Loss NetIncomeLoss	15526000	usd
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	4748000	usd
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	334000	usd
	fncb	Stock Issued During Period Value Dividend Reinvestment Plan Or Optional Cash Purchase Plan StockIssuedDuringPeriodValueDividendReinvestmentPlanOrOptionalCashPurchasePlan	2000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-58478000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	111592000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	118949000	usd
	us-gaap	Net Income Loss NetIncomeLoss	9630000	usd
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	5329000	usd
	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	416000	usd
	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	38000	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	163000	usd
	fncb	Stock Issued During Period Value Dividend Reinvestment Plan Or Optional Cash Purchase Plan StockIssuedDuringPeriodValueDividendReinvestmentPlanOrOptionalCashPurchasePlan	21000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-7166000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	117802000	usd
	us-gaap	Net Income Loss NetIncomeLoss	9630000	usd
	us-gaap	Net Income Loss NetIncomeLoss	15526000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-1474000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2260000	usd
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	16000	usd
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	7000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	988000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	1163000	usd
	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	-640000	usd
	us-gaap	Amortization Of Deferred Loan Origination Fees Net AmortizationOfDeferredLoanOriginationFeesNet	637000	usd
	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	0	usd
	us-gaap	Mortgage Servicing Rights Msr Impairment Recovery MortgageServicingRightsMSRImpairmentRecovery	-3000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	579000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	469000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1504000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1334000	usd
	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	-729000	usd
	us-gaap	Provision For Other Credit Losses ProvisionForOtherCreditLosses	461000	usd
	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	252000	usd
	us-gaap	Debt Securities Available For Sale Gain Loss DebtSecuritiesAvailableForSaleGainLoss	-35000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-1773000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-121000	usd
	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	2000	usd
	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	123000	usd
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-0	usd
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	3000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	612000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	542000	usd
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	252000	usd
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	6888000	usd
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	190000	usd
	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	7013000	usd
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-25000	usd
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-0	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	642000	usd
	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	986000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-508000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	520000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	830000	usd
	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	52000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-5778000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-3652000	usd
	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	352000	usd
	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-703000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	9982000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	14823000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	32521000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	31942000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	10394000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	2372000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	14966000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	61397000	usd
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	160000	usd
	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	695000	usd
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	297000	usd
	us-gaap	Payments For Proceeds From Federal Home Loan Bank Stock PaymentsForProceedsFromFederalHomeLoanBankStock	2927000	usd
	us-gaap	Payments For Proceeds From Federal Reserve Bank Stock PaymentsForProceedsFromFederalReserveBankStock	82925000	usd
	us-gaap	Payments For Proceeds From Federal Reserve Bank Stock PaymentsForProceedsFromFederalReserveBankStock	131015000	usd
	us-gaap	Proceeds From Sale Of Wholly Owned Real Estate And Real Estate Acquired In Settlement Of Loans ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans	0	usd
	us-gaap	Proceeds From Sale Of Wholly Owned Real Estate And Real Estate Acquired In Settlement Of Loans ProceedsFromSaleOfWhollyOwnedRealEstateAndRealEstateAcquiredInSettlementOfLoans	695000	usd
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	-0	usd
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	3000000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	187000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	607000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-55620000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-164632000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	81728000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	47598000	usd
	fncb	Proceeds From Payments Of Federal Home Loan Bank Of Pittsburgh Advances Overnight ProceedsFromPaymentsOfFederalHomeLoanBankOfPittsburghAdvancesOvernight	-104400000	usd
	fncb	Proceeds From Payments Of Federal Home Loan Bank Of Pittsburgh Advances Overnight ProceedsFromPaymentsOfFederalHomeLoanBankOfPittsburghAdvancesOvernight	65700000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	303873000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Advances ProceedsFromFederalHomeLoanBankAdvances	10000000	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	195100000	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	30000000	usd
	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	25000000	usd
	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	-0	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	-0	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3636000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	21000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	2000	usd
	us-gaap	Payments Of Dividends PaymentsOfDividends	5329000	usd
	us-gaap	Payments Of Dividends PaymentsOfDividends	4748000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	80793000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	84916000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	35155000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-64893000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	41916000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	99020000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	77071000	usd
CY2022Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	34127000	usd
	us-gaap	Interest Paid Net InterestPaidNet	23681000	usd
	us-gaap	Interest Paid Net InterestPaidNet	2848000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2500000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3350000	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	19000	usd
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	0	usd
	us-gaap	Stock Issued1 StockIssued1	38000	usd
	us-gaap	Stock Issued1 StockIssued1	0	usd
CY2023Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	508741000	usd
CY2023Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	146000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	-11557000	usd
CY2023Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	15759000	usd
CY2023Q1	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	2217000	usd
CY2023Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-65953000	usd
CY2023Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	71745000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	437142000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	537912000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	96000	usd
CY2022Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	61917000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	476091000	usd
CY2023Q3	fncb	Number Of Non Government Securities Of Any Individual Issuer Exceeding10 Percent Of Shareholders Equity NumberOfNonGovernmentSecuritiesOfAnyIndividualIssuerExceeding10PercentOfShareholdersEquity	0	pure
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	13428000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	13257000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	82337000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	75279000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	92153000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	76522000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	108736000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	88560000	usd
CY2023Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	508741000	usd
CY2023Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	437142000	usd
CY2023Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
CY2022Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	10394000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	2372000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	252000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	-0	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	-0	usd
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	-0	usd
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	35000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	16	pure
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	21481000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	895000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	364	pure
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	403951000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	70850000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	380	pure
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	425432000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	71745000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	205	pure
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	240563000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	19668000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	192	pure
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	225813000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	42249000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	397	pure
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	466376000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	61917000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	380	pure
CY2023Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-233000	usd
CY2022Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	86000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-1773000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-121000	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	0	usd
CY2022Q3	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	0	usd
	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	0	usd
	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	0	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-233000	usd
CY2022Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	86000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-1773000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-121000	usd
CY2023Q3	fncb	Atlantic Community Bankers Bank Stock AtlanticCommunityBankersBankStock	10000	usd
CY2022Q4	fncb	Atlantic Community Bankers Bank Stock AtlanticCommunityBankersBankStock	10000	usd
CY2023Q3	us-gaap	Restricted Investments RestrictedInvestments	8842000	usd
CY2022Q4	us-gaap	Restricted Investments RestrictedInvestments	8545000	usd
CY2023Q3	us-gaap	Financing Receivable Unamortized Loan Fee Cost FinancingReceivableUnamortizedLoanFeeCost	2400000	usd
CY2023Q3	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	952000	usd
CY2023Q3	us-gaap	Financing Receivable Unamortized Purchase Premium Discount FinancingReceivableUnamortizedPurchasePremiumDiscount	199000	usd
CY2023Q3	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	3200000	usd
CY2022Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	2100000	usd
CY2023Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1205752000	usd
CY2022Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1123343000	usd
CY2023Q3	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	-0	usd
CY2022Q4	us-gaap	Financing Receivable Deferred Income FinancingReceivableDeferredIncome	810000	usd
CY2023Q3	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	0	usd
CY2022Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	1784000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	12149000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	14193000	usd
CY2023Q3	us-gaap	Notes Receivable Net NotesReceivableNet	1193603000	usd
CY2022Q4	us-gaap	Notes Receivable Net NotesReceivableNet	1110124000	usd
	fncb	Loans Still Classified As Non Accrual Status Period Of Past Due LoansStillClassifiedAsNonAccrualStatusPeriodOfPastDue	P90D
CY2023Q3	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	178889000	usd
CY2023Q3	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	304827000	usd
CY2023Q3	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	254163000	usd
CY2023Q3	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	95777000	usd
CY2023Q3	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	109151000	usd
CY2023Q3	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	151550000	usd
CY2023Q3	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	111395000	usd
CY2023Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1205752000	usd
	us-gaap	Financing Receivable Year One Originated Current Fiscal Year Writeoff FinancingReceivableYearOneOriginatedCurrentFiscalYearWriteoff	316000	usd
	us-gaap	Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	951000	usd
	us-gaap	Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	656000	usd
	us-gaap	Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	15000	usd
	us-gaap	Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	20000	usd
	us-gaap	Financing Receivable Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	61000	usd
	us-gaap	Financing Receivable Revolving Writeoff FinancingReceivableRevolvingWriteoff	128000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2147000	usd
CY2022Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1123343000	usd
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	12873000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	818000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	364000	usd
CY2023Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-270000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	12149000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	13381000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	411000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	336000	usd
CY2022Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	513000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	13819000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	14193000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2147000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1235000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1504000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	12149000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	12416000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	809000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	878000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1334000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	13819000	usd
CY2023Q3	fncb	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment	195000	usd
CY2023Q3	fncb	Financing Receivables Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivablesAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	11954000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	12149000	usd
CY2023Q3	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	4654000	usd
CY2023Q3	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	1201098000	usd
CY2023Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1205752000	usd
CY2022Q4	fncb	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment	34000	usd
CY2022Q4	fncb	Financing Receivables Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivablesAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	14159000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	14193000	usd
CY2022Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	7600000	usd
CY2022Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	1115743000	usd
CY2022Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1123343000	usd
CY2023Q3	fncb	Reserves For Unfunded Commitments ReservesForUnfundedCommitments	1500000	usd
CY2022Q4	fncb	Reserves For Unfunded Commitments ReservesForUnfundedCommitments	2200000	usd
CY2023Q1	fncb	Reserves For Unfunded Commitments ReservesForUnfundedCommitments	1300000	usd
CY2023Q3	fncb	Financing Receivable Nonaccrual Credit FinancingReceivableNonaccrualCredit	234000	usd
	fncb	Financing Receivable Nonaccrual Credit FinancingReceivableNonaccrualCredit	729000	usd
CY2022Q3	fncb	Financing Receivable Nonaccrual Credit FinancingReceivableNonaccrualCredit	338000	usd
	fncb	Financing Receivable Nonaccrual Credit FinancingReceivableNonaccrualCredit	461000	usd
CY2023Q3	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	59000	usd
CY2023Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	5084000	usd
CY2023Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1205752000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	79000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	2763000	usd
CY2022Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	1123343000	usd
CY2023Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	5100000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	2800000	usd
	fncb	Loans Still Classified As Non Accrual Status Period Of Past Due LoansStillClassifiedAsNonAccrualStatusPeriodOfPastDue	P90D
CY2023Q3	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	59000	usd
CY2022Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	79000	usd
CY2022Q4	fncb	Evaluated Individually For Impairment Nonaccrued Loans Other Than Td Rs Threshold EvaluatedIndividuallyForImpairmentNonaccruedLoansOtherThanTDRsThreshold	100000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	1720000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	2066000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease Before Adjustments After Tax OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAfterTax	0	usd
CY2022Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	5880000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	6098000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	34000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	7600000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	8164000	usd
CY2022Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	34000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	8345000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	77000	usd
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	8966000	usd
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	229000	usd
CY2022Q3	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	42000	usd
	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	128000	usd
	fncb	Financing Receivable Modifications Number Of Contracts FinancingReceivableModificationsNumberOfContracts	0	pure
	fncb	Number Of Real Estate Properties Foreclosed NumberOfRealEstatePropertiesForeclosed	0	pure
CY2023Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	297740000	usd
CY2022Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	305850000	usd
CY2023Q3	fncb	Interest Bearing Deposits Demand InterestBearingDepositsDemand	734395000	usd
CY2022Q4	fncb	Interest Bearing Deposits Demand InterestBearingDepositsDemand	808497000	usd
CY2023Q3	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	133001000	usd
CY2022Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	148426000	usd
CY2023Q3	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	53348000	usd
CY2022Q4	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	24902000	usd
CY2023Q3	fncb	Time Deposits Below Fdic Insurance Limit TimeDepositsBelowFdicInsuranceLimit	283891000	usd
CY2022Q4	fncb	Time Deposits Below Fdic Insurance Limit TimeDepositsBelowFdicInsuranceLimit	132972000	usd
CY2023Q3	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	1204635000	usd
CY2022Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	1114797000	usd
CY2023Q3	us-gaap	Deposits Deposits	1502375000	usd
CY2022Q4	us-gaap	Deposits Deposits	1420647000	usd
CY2023Q3	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	123100000	usd
CY2022Q4	us-gaap	Interest Bearing Domestic Deposit Brokered InterestBearingDomesticDepositBrokered	23900000	usd
CY2023Q3	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	186733000	usd
CY2022Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	182360000	usd
CY2023Q3	fncb	Hedged Asset Liabilities Fair Value Hedge HedgedAssetLiabilitiesFairValueHedge	24821000	usd
CY2022Q3	fncb	Hedged Asset Liabilities Fair Value Hedge HedgedAssetLiabilitiesFairValueHedge	0	usd
CY2023Q3	fncb	Hedged Asset Liability Fair Value Hedge Cumulative Increase Decrease HedgedAssetLiabilityFairValueHedgeCumulativeIncreaseDecrease	179000	usd
CY2022Q3	fncb	Hedged Asset Liability Fair Value Hedge Cumulative Increase Decrease HedgedAssetLiabilityFairValueHedgeCumulativeIncreaseDecrease	0	usd
CY2023Q3	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	3599000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	2104000	usd
CY2023Q3	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	1670000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	931000	usd
CY2023Q3	us-gaap	Derivative Asset Not Offset Policy Election Deduction DerivativeAssetNotOffsetPolicyElectionDeduction	0	usd
CY2022Q4	us-gaap	Derivative Asset Not Offset Policy Election Deduction DerivativeAssetNotOffsetPolicyElectionDeduction	0	usd
CY2023Q3	us-gaap	Derivative Liability Not Offset Policy Election Deduction DerivativeLiabilityNotOffsetPolicyElectionDeduction	0	usd
CY2022Q4	us-gaap	Derivative Liability Not Offset Policy Election Deduction DerivativeLiabilityNotOffsetPolicyElectionDeduction	0	usd
CY2023Q3	fncb	Derivative Collateral Right To Reclaim Securities And Cash DerivativeCollateralRightToReclaimSecuritiesAndCash	3599000	usd
CY2022Q4	fncb	Derivative Collateral Right To Reclaim Securities And Cash DerivativeCollateralRightToReclaimSecuritiesAndCash	1946000	usd
CY2023Q3	fncb	Derivative Collateral Obligation To Return Securities And Cash DerivativeCollateralObligationToReturnSecuritiesAndCash	0	usd
CY2022Q4	fncb	Derivative Collateral Obligation To Return Securities And Cash DerivativeCollateralObligationToReturnSecuritiesAndCash	0	usd
CY2023Q3	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	0	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	158000	usd
CY2023Q3	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	1670000	usd
CY2022Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	931000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-369000	usd
CY2023Q3	fncb	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax Included Component OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTaxIncludedComponent	-369000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	3000	usd
CY2023Q3	fncb	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax Included Component OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTaxIncludedComponent	3000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease Adjustments After Tax OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAdjustmentsAfterTax	0	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	144000	usd
CY2022Q3	fncb	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax Included Component OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTaxIncludedComponent	144000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease Before Adjustments After Tax OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAfterTax	0	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-68000	usd
CY2022Q3	fncb	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax Included Component OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTaxIncludedComponent	-68000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease Adjustments After Tax OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAdjustmentsAfterTax	0	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	1228000	usd
	fncb	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax Included Component OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTaxIncludedComponent	1228000	usd
	us-gaap	Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease Before Adjustments After Tax OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAfterTax	0	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-288000	usd
	fncb	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax Included Component OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTaxIncludedComponent	-288000	usd
	us-gaap	Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease Adjustments After Tax OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAdjustmentsAfterTax	0	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	312000	usd
	fncb	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax Included Component OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTaxIncludedComponent	312000	usd
	us-gaap	Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease Before Adjustments After Tax OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAfterTax	0	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	-98000	usd
	fncb	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax Included Component OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTaxIncludedComponent	-98000	usd
	us-gaap	Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease Adjustments After Tax OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAdjustmentsAfterTax	0	usd
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2023Q3	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1023000	usd
CY2023Q3	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2022Q3	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1372000	usd
CY2022Q3	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	2501000	usd
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	3946000	usd
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2023Q3	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	209000	usd
CY2023Q3	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.0429	pure
CY2022Q3	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	230000	usd
CY2022Q3	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.0352	pure
	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	627000	usd
	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.0527	pure
	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	644000	usd
	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.0343	pure
CY2023Q3	fncb	Income Tax Reconciliation Non Deductible Interest Expense IncomeTaxReconciliationNonDeductibleInterestExpense	21000	usd
CY2023Q3	fncb	Income Tax Reconciliation Nondeductible Interest Expense Percent IncomeTaxReconciliationNondeductibleInterestExpensePercent	0.0043	pure
CY2022Q3	fncb	Income Tax Reconciliation Non Deductible Interest Expense IncomeTaxReconciliationNonDeductibleInterestExpense	11000	usd
CY2022Q3	fncb	Income Tax Reconciliation Nondeductible Interest Expense Percent IncomeTaxReconciliationNondeductibleInterestExpensePercent	0.0017	pure
	fncb	Income Tax Reconciliation Non Deductible Interest Expense IncomeTaxReconciliationNonDeductibleInterestExpense	64000	usd
	fncb	Income Tax Reconciliation Nondeductible Interest Expense Percent IncomeTaxReconciliationNondeductibleInterestExpensePercent	0.0054	pure
	fncb	Income Tax Reconciliation Non Deductible Interest Expense IncomeTaxReconciliationNonDeductibleInterestExpense	34000	usd
	fncb	Income Tax Reconciliation Nondeductible Interest Expense Percent IncomeTaxReconciliationNondeductibleInterestExpensePercent	0.0018	pure
CY2023Q3	fncb	Income Tax Effect Of Nontaxable Income Related To Income From Bank Owned Life Insurance IncomeTaxEffectOfNontaxableIncomeRelatedToIncomeFromBankOwnedLifeInsurance	45000	usd
CY2023Q3	fncb	Income Tax Effect Of Nontaxable Income Related To Income From Bank Owned Life Insurance Percent IncomeTaxEffectOfNontaxableIncomeRelatedToIncomeFromBankOwnedLifeInsurancePercent	-0.0092	pure
CY2022Q3	fncb	Income Tax Effect Of Nontaxable Income Related To Income From Bank Owned Life Insurance IncomeTaxEffectOfNontaxableIncomeRelatedToIncomeFromBankOwnedLifeInsurance	42000	usd
CY2022Q3	fncb	Income Tax Effect Of Nontaxable Income Related To Income From Bank Owned Life Insurance Percent IncomeTaxEffectOfNontaxableIncomeRelatedToIncomeFromBankOwnedLifeInsurancePercent	-0.0064	pure
	fncb	Income Tax Effect Of Nontaxable Income Related To Income From Bank Owned Life Insurance IncomeTaxEffectOfNontaxableIncomeRelatedToIncomeFromBankOwnedLifeInsurance	129000	usd
	fncb	Income Tax Effect Of Nontaxable Income Related To Income From Bank Owned Life Insurance Percent IncomeTaxEffectOfNontaxableIncomeRelatedToIncomeFromBankOwnedLifeInsurancePercent	-0.0108	pure
	fncb	Income Tax Effect Of Nontaxable Income Related To Income From Bank Owned Life Insurance IncomeTaxEffectOfNontaxableIncomeRelatedToIncomeFromBankOwnedLifeInsurance	114000	usd
	fncb	Income Tax Effect Of Nontaxable Income Related To Income From Bank Owned Life Insurance Percent IncomeTaxEffectOfNontaxableIncomeRelatedToIncomeFromBankOwnedLifeInsurancePercent	-0.0061	pure
CY2023Q3	fncb	Effective Income Tax Rate Reconciliation Unrealized Gain Loss On Equity Securities Amount EffectiveIncomeTaxRateReconciliationUnrealizedGainLossOnEquitySecuritiesAmount	41000	usd
CY2023Q3	fncb	Effective Income Tax Rate Reconciliation Unrealized Gain Loss On Equity Securities Percent EffectiveIncomeTaxRateReconciliationUnrealizedGainLossOnEquitySecuritiesPercent	0.0084	pure
CY2022Q3	fncb	Effective Income Tax Rate Reconciliation Unrealized Gain Loss On Equity Securities Amount EffectiveIncomeTaxRateReconciliationUnrealizedGainLossOnEquitySecuritiesAmount	-18000	usd
CY2022Q3	fncb	Effective Income Tax Rate Reconciliation Unrealized Gain Loss On Equity Securities Percent EffectiveIncomeTaxRateReconciliationUnrealizedGainLossOnEquitySecuritiesPercent	-0.0028	pure
	fncb	Effective Income Tax Rate Reconciliation Unrealized Gain Loss On Equity Securities Amount EffectiveIncomeTaxRateReconciliationUnrealizedGainLossOnEquitySecuritiesAmount	372000	usd
	fncb	Effective Income Tax Rate Reconciliation Unrealized Gain Loss On Equity Securities Percent EffectiveIncomeTaxRateReconciliationUnrealizedGainLossOnEquitySecuritiesPercent	0.0312	pure
	fncb	Effective Income Tax Rate Reconciliation Unrealized Gain Loss On Equity Securities Amount EffectiveIncomeTaxRateReconciliationUnrealizedGainLossOnEquitySecuritiesAmount	25000	usd
	fncb	Effective Income Tax Rate Reconciliation Unrealized Gain Loss On Equity Securities Percent EffectiveIncomeTaxRateReconciliationUnrealizedGainLossOnEquitySecuritiesPercent	0.0013	pure
CY2023Q3	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-122000	usd
CY2023Q3	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.025	pure
CY2022Q3	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	8000	usd
CY2022Q3	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.0012	pure
	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	96000	usd
	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.0081	pure
	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	18000	usd
	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.001	pure
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	709000	usd
CY2023Q3	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.1456	pure
CY2022Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1101000	usd
CY2022Q3	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.1685	pure
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2277000	usd
	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.1912	pure
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3265000	usd
	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.1738	pure
CY2023Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	usd
CY2023Q2	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	97471000	usd
CY2022Q2	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	82744000	usd
CY2022Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	79144000	usd
CY2021Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	71437000	usd
CY2023Q3	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	63665000	usd
CY2022Q3	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	28560000	usd
	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	177899000	usd
	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	57966000	usd
CY2023Q3	us-gaap	Loans And Leases Receivable Related Parties Proceeds LoansAndLeasesReceivableRelatedPartiesProceeds	65331000	usd
CY2022Q3	us-gaap	Loans And Leases Receivable Related Parties Proceeds LoansAndLeasesReceivableRelatedPartiesProceeds	22901000	usd
	us-gaap	Loans And Leases Receivable Related Parties Proceeds LoansAndLeasesReceivableRelatedPartiesProceeds	161238000	usd
	us-gaap	Loans And Leases Receivable Related Parties Proceeds LoansAndLeasesReceivableRelatedPartiesProceeds	41000000	usd
CY2023Q3	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	95805000	usd
CY2022Q3	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	88403000	usd
CY2023Q3	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	95805000	usd
CY2022Q3	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	88403000	usd
CY2023Q3	us-gaap	Operating Lease Expense OperatingLeaseExpense	100000	usd
	us-gaap	Operating Lease Expense OperatingLeaseExpense	301000	usd
CY2022Q3	us-gaap	Operating Lease Expense OperatingLeaseExpense	123000	usd
	us-gaap	Operating Lease Expense OperatingLeaseExpense	292000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	97000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	417000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	388000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	387000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	388000	usd
CY2023Q3	fncb	Lessee Operating Lease Liability Payments Due After Year Four LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour	2271000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	3948000	usd
CY2023Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	671000	usd
CY2023Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P10Y10M24D
CY2022Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P11Y9M18D
CY2023Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0327	pure
CY2022Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0326	pure
	us-gaap	Operating Lease Payments OperatingLeasePayments	320000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	309000	usd
CY2023Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.09
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.27
CY2022Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.09
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.24
CY2023Q3	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	1439
	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	8814
CY2022Q3	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	1550
	us-gaap	Stock Issued During Period Shares Dividend Reinvestment Plan StockIssuedDuringPeriodSharesDividendReinvestmentPlan	3919
CY2023Q1	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	750000
CY2023Q3	us-gaap	Capital Capital	181794000	usd
CY2023Q3	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1321	pure
CY2023Q3	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.08	pure
CY2023Q3	fncb	Capital Required For Capital Adequacy To Risk Weighted Assets With Capital Conservation Buffer CapitalRequiredForCapitalAdequacyToRiskWeightedAssetsWithCapitalConservationBuffer	0.105	pure
CY2023Q3	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.10	pure
CY2023Q3	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	168156000	usd
CY2023Q3	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1221	pure
CY2023Q3	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.06	pure
CY2023Q3	fncb	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets With Capital Conservation Buffer TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssetsWithCapitalConservationBuffer	0.085	pure
CY2023Q3	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.08	pure
CY2023Q3	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	168156000	usd
CY2023Q3	us-gaap	Common Equity Tier One Capital Ratio CommonEquityTierOneCapitalRatio	0.1221	pure
CY2023Q3	us-gaap	Banking Regulation Common Equity Tier One Risk Based Capital Ratio Capital Adequacy Minimum BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioCapitalAdequacyMinimum	0.045	pure
CY2023Q3	fncb	Common Equity Tier One Risk Basedcapital Required For Capital Adequacy To Risk Weighted Assets With Capital Conservation Buffer CommonEquityTierOneRiskBasedcapitalRequiredForCapitalAdequacyToRiskWeightedAssetsWithCapitalConservationBuffer	0.07	pure
CY2023Q3	us-gaap	Banking Regulation Common Equity Tier One Risk Based Capital Ratio Well Capitalized Minimum BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioWellCapitalizedMinimum	0.065	pure
CY2023Q3	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	168156000	usd
CY2023Q3	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0911	pure
CY2023Q3	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.04	pure
CY2023Q3	fncb	Tier One Leverage Capital Required For Capital Adequacy To Average Assets With Capital Conservation Buffer TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssetsWithCapitalConservationBuffer	0.04	pure
CY2023Q3	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.05	pure
CY2023Q3	us-gaap	Risk Weighted Assets RiskWeightedAssets	1376706000	usd
CY2023Q3	fncb	Average Assets AverageAssets	1846243000	usd
CY2022Q4	us-gaap	Capital Capital	169984000	usd
CY2022Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1311	pure
CY2022Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.08	pure
CY2022Q4	fncb	Capital Required For Capital Adequacy To Risk Weighted Assets With Capital Conservation Buffer CapitalRequiredForCapitalAdequacyToRiskWeightedAssetsWithCapitalConservationBuffer	0.105	pure
CY2022Q4	us-gaap	Capital Required To Be Well Capitalized To Risk Weighted Assets CapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.10	pure
CY2022Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	154842000	usd
CY2022Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1194	pure
CY2022Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.06	pure
CY2022Q4	fncb	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets With Capital Conservation Buffer TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssetsWithCapitalConservationBuffer	0.085	pure
CY2022Q4	us-gaap	Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets TierOneRiskBasedCapitalRequiredToBeWellCapitalizedToRiskWeightedAssets	0.08	pure
CY2022Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	154842000	usd
CY2022Q4	us-gaap	Common Equity Tier One Capital Ratio CommonEquityTierOneCapitalRatio	0.1194	pure
CY2022Q4	us-gaap	Banking Regulation Common Equity Tier One Risk Based Capital Ratio Capital Adequacy Minimum BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioCapitalAdequacyMinimum	0.045	pure
CY2022Q4	fncb	Common Equity Tier One Risk Basedcapital Required For Capital Adequacy To Risk Weighted Assets With Capital Conservation Buffer CommonEquityTierOneRiskBasedcapitalRequiredForCapitalAdequacyToRiskWeightedAssetsWithCapitalConservationBuffer	0.07	pure
CY2022Q4	us-gaap	Banking Regulation Common Equity Tier One Risk Based Capital Ratio Well Capitalized Minimum BankingRegulationCommonEquityTierOneRiskBasedCapitalRatioWellCapitalizedMinimum	0.065	pure
CY2022Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	154842000	usd
CY2022Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0877	pure
CY2022Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.04	pure
CY2022Q4	fncb	Tier One Leverage Capital Required For Capital Adequacy To Average Assets With Capital Conservation Buffer TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssetsWithCapitalConservationBuffer	0.04	pure
CY2022Q4	us-gaap	Tier One Leverage Capital Required To Be Well Capitalized To Average Assets TierOneLeverageCapitalRequiredToBeWellCapitalizedToAverageAssets	0.05	pure
CY2022Q4	us-gaap	Risk Weighted Assets RiskWeightedAssets	1296618000	usd
CY2022Q4	fncb	Average Assets AverageAssets	1765251000	usd
	fncb	Debt Securities Availableforsale Level3 To Level2 Transfers DebtSecuritiesAvailableforsaleLevel3ToLevel2Transfers	2	pure
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	4162000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	5435000	usd
	us-gaap	Net Income Loss NetIncomeLoss	9630000	usd
	us-gaap	Net Income Loss NetIncomeLoss	15526000	usd
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19776342
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19687766
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19724956
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19765814
CY2023Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	18
CY2022Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	9281
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2834
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	21041
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19776360
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19697047
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19727790
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19786855
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.21
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.49
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.79
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.21
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.28
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.79

Files In Submission

Name	View Source	Status
FilingSummary.xml	Edgar Link	unprocessable
fncb-20230930_cal.xml	Edgar Link	unprocessable
0001437749-23-030217-index-headers.html	Edgar Link	pending
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0001437749-23-030217.txt	Edgar Link	pending
0001437749-23-030217-xbrl.zip	Edgar Link	pending
ex_566139.htm	Edgar Link	pending
ex_566140.htm	Edgar Link	pending
ex_566141.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
fncb-20230930.xsd	Edgar Link	pending
fncb20230930_10q.htm	Edgar Link	pending
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FNCB Bancorp, Inc.

2023 Q4 Form 10-Q Financial Statement

#000143774923030217 Filed on November 03, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission