| Document And Entity Information | Mar. 16, 2021 |
| Document Information [Line Items] | |
| Entity, Registrant Name | FLUENT, INC. |
| Document, Type | 8-K/A |
| Document, Period End Date | Mar. 16, 2021 |
| Entity, Incorporation, State or Country Code | DE |
| Entity, File Number | 001-37893 |
| Entity, Tax Identification Number | 77-0688094 |
| Entity, Address, Address Line One | 300 Vesey Street |
| Entity, Address, Address Line Two | 9th Floor |
| Entity, Address, City or Town | New York |
| Entity, Address, State or Province | NY |
| Entity, Address, Postal Zip Code | 10282 |
| City Area Code | 646 |
| Local Phone Number | 669-7272 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | FLNT |
| Security Exchange Name | NASDAQ |
| Entity, Emerging Growth Company | false |
| Amendment Description | Fluent 8-K/A (Q4/FY 2020 Earnings Call Transcript) |
| Amendment Flag | true |
| Entity, Central Index Key | 0001460329 |
