Note 1 - Basis of Presentation	6 Months Ended
Jun. 30, 2023
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	Note 1. Basis of Presentation The consolidated financial statements of FNCB Bancorp, Inc. are comprised of the accounts of FNCB Bancorp, Inc., a registered bank holding company under the Bank Holding Company Act of 1956, and its wholly owned subsidiary, FNCB Bank (the “Bank”), (and collectively, “FNCB”). The accounting and reporting policies of FNCB conform to accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10-01 of Regulation S-X. Accordingly, they do not include all of the information and accompanying notes required by GAAP for complete financial statements. In the opinion of management, all adjustments necessary for a fair presentation of the financial position and the results of operations for the periods presented have been included in the consolidated financial statements. All intercompany balances and transactions have been eliminated in consolidation. Prior period amounts have been reclassified when necessary to conform to the current period’s presentation. Such reclassifications did not have an impact on the operating results or financial position of FNCB. The operating results and financial position of FNCB for the three and six months ended June 30, 2023 may not be indicative of future results of operations and financial position. The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to change in the near term are the allowance for credit losses (“ACL”), securities’ valuation and evaluation for credit impairment and income taxes. FNCB has evaluated events and transactions occurring subsequent to June 30, 2023, the balance sheet date, for items that could potentially be recognized or disclosed in these consolidated financial statements. The evaluation was conducted through the issuance date of these consolidated financial statements. See Note 11, “Stock Compensation Plans” and Note 12, “Regulatory Matters” for information about events and transactions that have occurred subsequent to the balance sheet date. These consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in FNCB’s audited consolidated financial statements, included in the Annual Report filed on Form 10-K as of and for the year ended December 31, 2022 (the “2022 Annual Report”).

Note 1 - Basis of Presentation

6 Months Ended

Jun. 30, 2023

Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]

Note 1. Basis of Presentation

The consolidated financial statements of FNCB Bancorp, Inc. are comprised of the accounts of FNCB Bancorp, Inc., a registered bank holding company under the Bank Holding Company Act of 1956, and its wholly owned subsidiary, FNCB Bank (the “Bank”), (and collectively, “FNCB”). The accounting and reporting policies of FNCB conform to accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10-01 of Regulation S-X. Accordingly, they do not include all of the information and accompanying notes required by GAAP for complete financial statements. In the opinion of management, all adjustments necessary for a fair presentation of the financial position and the results of operations for the periods presented have been included in the consolidated financial statements. All intercompany balances and transactions have been eliminated in consolidation. Prior period amounts have been reclassified when necessary to conform to the current period’s presentation. Such reclassifications did not have an impact on the operating results or financial position of FNCB. The operating results and financial position of FNCB for the three and six months ended June 30, 2023 may not be indicative of future results of operations and financial position.

The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to change in the near term are the allowance for credit losses (“ACL”), securities’ valuation and evaluation for credit impairment and income taxes.

FNCB has evaluated events and transactions occurring subsequent to June 30, 2023, the balance sheet date, for items that could potentially be recognized or disclosed in these consolidated financial statements. The evaluation was conducted through the issuance date of these consolidated financial statements. See Note 11, “Stock Compensation Plans” and Note 12, “Regulatory Matters” for information about events and transactions that have occurred subsequent to the balance sheet date.

These consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in FNCB’s audited consolidated financial statements, included in the Annual Report filed on Form 10-K as of and for the year ended December 31, 2022 (the “2022 Annual Report”).