Basis of Presentation	6 Months Ended
Jun. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited interim consolidated condensed financial statements include LCNB Corp. ("LCNB") and its wholly-owned subsidiaries: LCNB National Bank (the "Bank") and LCNB Risk Management, Inc., a captive insurance company which was incorporated in Nevada during the second quarter 2017. All material intercompany transactions and balances are eliminated in consolidation. The unaudited interim consolidated condensed financial statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and the rules and regulations of the Securities and Exchange Commission (the "SEC"). Certain information and note disclosures normally included in annual financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to those rules and regulations. In the opinion of management, the unaudited interim consolidated financial statements include all adjustments (consisting of normal, recurring accruals) considered necessary for a fair presentation of financial position, results of operations, and cash flows for the interim periods, as required by Regulation S-X, Rule 10-01. The consolidated condensed balance sheet as of December 31, 2016 has been derived from the audited consolidated balance sheet as of that day. Certain prior period data presented in the financial statements have been reclassified to conform with the current year presentation. Accounting Standards Update ("ASU") No. 2016-09, "Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting," was issued by the Financial Accounting Standards Board ("FASB") in March 2016 and affects all entities that issue share-based payment awards to their employees. The new guidance involves several aspects of the accounting for share-based payment transactions, including income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. Under ASU No. 2016-09, any excess tax benefits or tax deficiencies should be recognized as income tax expense or benefit in the income statement. Excess tax benefits are to be classified as an operating activity in the statement of cash flows. In accruing compensation cost, an entity can make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest, as required under current guidance, or account for forfeitures when they occur. For an award to qualify for equity classification, an entity cannot partially settle the award in excess of the employer's maximum statutory withholding requirements. Such cash paid by an employer when directly withholding shares for tax withholding purposes should be classified as a financing activity in the statement of cash flows. The amendments in ASU No. 2016-09 were effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2016. Accordingly, LCNB adopted the update as of January 1, 2017. Adoption did not have a material impact on LCNB's results of operations or financial position. ASU No. 2017-08, "Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities," was issued by the FASB in March 2017 and applies to all entities that hold investments in callable debt securities that have an amortized cost basis in excess of the amount that is repayable by the issuer at the earliest call date (that is, at a premium). The ASU requires the premium to be amortized to the earliest call date, not the maturity date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. ASU No. 2017-08 is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted and management elected to adopt the update as of January 1, 2017. Adoption did not have a material impact on LCNB's results of operations or financial position. The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Results of operations for the three and six months ended June 30, 2017 are not necessarily indicative of the results to be expected for the full year ending December 31, 2017. These unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements, accounting policies, and financial notes thereto included in LCNB's 2016 Annual Report on Form 10-K filed with the SEC.

Basis of Presentation

The accompanying unaudited interim consolidated condensed financial statements include LCNB Corp. ("LCNB") and its wholly-owned subsidiaries: LCNB National Bank (the "Bank") and LCNB Risk Management, Inc., a captive insurance company which was incorporated in Nevada during the second quarter 2017. All material intercompany transactions and balances are eliminated in consolidation.

The unaudited interim consolidated condensed financial statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and the rules and regulations of the Securities and Exchange Commission (the "SEC"). Certain information and note disclosures normally included in annual financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to those rules and regulations. In the opinion of management, the unaudited interim consolidated financial statements include all adjustments (consisting of normal, recurring accruals) considered necessary for a fair presentation of financial position, results of operations, and cash flows for the interim periods, as required by Regulation S-X, Rule 10-01.

The consolidated condensed balance sheet as of December 31, 2016 has been derived from the audited consolidated balance sheet as of that day.

Certain prior period data presented in the financial statements have been reclassified to conform with the current year presentation.

Accounting Standards Update ("ASU") No. 2016-09, "Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting," was issued by the Financial Accounting Standards Board ("FASB") in March 2016 and affects all entities that issue share-based payment awards to their employees. The new guidance involves several aspects of the accounting for share-based payment transactions, including income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. Under ASU No. 2016-09, any excess tax benefits or tax deficiencies should be recognized as income tax expense or benefit in the income statement. Excess tax benefits are to be classified as an operating activity in the statement of cash flows. In accruing compensation cost, an entity can make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest, as required under current guidance, or account for forfeitures when they occur. For an award to qualify for equity classification, an entity cannot partially settle the award in excess of the employer's maximum statutory withholding requirements. Such cash paid by an employer when directly withholding shares for tax withholding purposes should be classified as a financing activity in the statement of cash flows. The amendments in ASU No. 2016-09 were effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2016. Accordingly, LCNB adopted the update as of January 1, 2017. Adoption did not have a material impact on LCNB's results of operations or financial position.

ASU No. 2017-08, "Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities," was issued by the FASB in March 2017 and applies to all entities that hold investments in callable debt securities that have an amortized cost basis in excess of the amount that is repayable by the issuer at the earliest call date (that is, at a premium). The ASU requires the premium to be amortized to the earliest call date, not the maturity date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. ASU No. 2017-08 is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted and management elected to adopt the update as of January 1, 2017. Adoption did not have a material impact on LCNB's results of operations or financial position.

The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Results of operations for the three and six months ended June 30, 2017 are not necessarily indicative of the results to be expected for the full year ending December 31, 2017. These unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements, accounting policies, and financial notes thereto included in LCNB's 2016 Annual Report on Form 10-K filed with the SEC.