| Cover | Mar. 02, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Mar. 2, 2022 |
| Entity File Number | 001-27072 |
| Entity Registrant Name | AIM IMMUNOTECH INC. |
| Entity Central Index Key | 0000946644 |
| Entity Tax Identification Number | 52-0845822 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 2117 SW Highway 484 |
| Entity Address, City or Town | Ocala |
| Entity Address, State or Province | FL |
| Entity Address, Postal Zip Code | 34473 |
| City Area Code | (352) |
| Local Phone Number | 448-7797 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Trading Symbol | AIM |
| Security Exchange Name | NYSEAMER |
| Entity Emerging Growth Company | false |
| Entity Information, Former Legal or Registered Name | AIM ImmunoTech Inc. |
