| Cover | Feb. 03, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 3, 2021 |
| Entity File Number | 0-11487 |
| Entity Registrant Name | LAKELAND FINANCIAL CORPORATION |
| Entity Central Index Key | 0000721994 |
| Entity Tax Identification Number | 35-1559596 |
| Entity Incorporation, State or Country Code | IN |
| Entity Address, Address Line One | 202 East Center Street |
| Entity Address, City or Town | Warsaw |
| Entity Address, State or Province | IN |
| Entity Address, Postal Zip Code | 46580 |
| City Area Code | 574 |
| Local Phone Number | 267-6144 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, no par value |
| Trading Symbol | LKFN |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
