Note 1 - Basis of Presentation -	9 Months Ended
Sep. 30, 2018
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	Note 1 – Basis of Presentation – The unaudited consolidated financial statements include the accounts of Business First Bancshares, Inc. (the “Company”) and its wholly-owned subsidiary, Business First Bank (the “Bank”), and the Bank’s wholly-owned subsidiary, Business First Insurance, LLC. The Bank operates out of branch locations in markets across Louisiana and Texas. As a state bank, it is subject to regulation by the Office of Financial Institutions, State of Louisiana, and the Federal Deposit Insurance Corporation, and undergoes periodic examinations by these agencies. The Company is also regulated by the Federal Reserve and is subject to periodic examinations. In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments necessary to present fairly the financial results for the periods presented, and all such adjustments are of a normal recurring nature. All material intercompany transactions are eliminated. The results of operations for the interim periods are not necessarily indicative of the results to be expected for the entire year. These interim consolidated financial statements have been prepared according to the rules and regulations of the Securities and Exchange Commission and, therefore, certain information and footnote disclosures normally presented in accordance with United States (“U.S.”) generally accepted accounting principles (“GAAP”) have been omitted or abbreviated. Preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying disclosures. These estimates are based on management’s best knowledge of current events and actions the Company may undertake in the future. Estimates are used in accounting for, among other items, the allowance for loan losses, useful lives for depreciation and amortization, fair value of financial instruments, deferred taxes, and contingencies. Estimates that are particularly susceptible to significant change for the Company include the determination of the allowance for loan losses and the assessment of deferred tax assets and liabilities and, therefore, are critical accounting policies. Management does not anticipate any material changes to estimates in the near term. Factors that may cause sensitivity to the aforementioned estimates include but are not limited to: external market factors such as market interest rates and employment rates, changes to operating policies and procedures, economic conditions in our markets, and changes in applicable banking regulations. Actual results may ultimately differ from estimates.

Note

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Basis of Presentation

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The unaudited consolidated financial statements include the accounts of Business First Bancshares, Inc. (the “Company”) and its wholly-owned subsidiary, Business First Bank (the “Bank”), and the Bank’s wholly-owned subsidiary, Business First Insurance, LLC. The Bank operates out of branch locations in markets across Louisiana and Texas. As a state bank, it is subject to regulation by the Office of Financial Institutions, State of Louisiana, and the Federal Deposit Insurance Corporation, and undergoes periodic examinations by these agencies. The Company is also regulated by the Federal Reserve and is subject to periodic examinations.

In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments necessary to present fairly the financial results for the periods presented, and all such adjustments are of a normal recurring nature. All material intercompany transactions are eliminated. The results of operations for the interim periods are

not

necessarily indicative of the results to be expected for the entire year.

These interim consolidated financial statements have been prepared according to the rules and regulations of the Securities and Exchange Commission and, therefore, certain information and footnote disclosures normally presented in accordance with United States (“U.S.”) generally accepted accounting principles (“GAAP”) have been omitted or abbreviated.

Preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying disclosures. These estimates are based on management’s best knowledge of current events and actions the Company

may

undertake in the future. Estimates are used in accounting for, among other items, the allowance for loan losses, useful lives for depreciation and amortization, fair value of financial instruments, deferred taxes, and contingencies. Estimates that are particularly susceptible to significant change for the Company include the determination of the allowance for loan losses and the assessment of deferred tax assets and liabilities and, therefore, are critical accounting policies. Management does

not

anticipate any material changes to estimates in the near term. Factors that

may

cause sensitivity to the aforementioned estimates include but are

not

limited to: external market factors such as market interest rates and employment rates, changes to operating policies and procedures, economic conditions in our markets, and changes in applicable banking regulations. Actual results

may

ultimately differ from estimates.