| Document And Entity Information | Dec. 07, 2021 |
| Document Information [Line Items] | |
| Entity, Registrant Name | First Trinity Financial Corporation |
| Document, Type | 8-K |
| Document, Period End Date | Dec. 7, 2021 |
| Entity, Incorporation, State or Country Code | OK |
| Entity, File Number | 000-52613 |
| Entity, Tax Identification Number | 34-1001436 |
| Entity, Address, Address Line One | 7633 E 63rd Place, Suite 230 |
| Entity, Address, City or Town | Tulsa |
| Entity, Address, State or Province | OK |
| Entity, Address, Postal Zip Code | 74133-1246 |
| City Area Code | 918 |
| Local Phone Number | 249-2438 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0001395585 |
