Name:	lcnb_CertainLoansAcquiredInTransferPaymentsNotExpectedToBeCollected
Namespace Prefix:	lcnb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The price that would be received to sell an asset in an orderly transaction between market participants at the measurement date. This relates to loans not accounted for as debt securities, with no evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

No definition available.

Name:	lcnb_CertainLoansNotImpairedAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue
Namespace Prefix:	lcnb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The total undiscounted amount of all uncollected contractual principal and contractual interest payments for the future, adjusted for the timing of prepayments, if considered at acquisition date. This relates to loans not accounted for as debt securities, with no evidence of deterioration of credit quality.

No definition available.

Name:	lcnb_CertainNonImpairedLoansAcquiredNotAccountedForAsDebtSecuritiesContractuallyRequiredPaymentsReceivableAtAcquisition
Namespace Prefix:	lcnb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Increase (Decrease) Fair Value Adjustment loans not impaired

No definition available.

Name:	lcnb_IncreaseDecreaseFairValueAdjustmentloansnotimpaired
Namespace Prefix:	lcnb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.