Note 15 - Regulatory Matters and Impact on Payment of Dividends (Details Textual)	Dec. 31, 2024
Capital Conversion Buffer, Percent	2.50%

The percent of the capital conversion buffer that is required to be maintained to make capital distributions.

No definition available.

Name:	lcnb_CapitalConversionBufferPercent
Namespace Prefix:	lcnb_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant