| Document And Entity Information | Aug. 06, 2024 |
| Document Information [Line Items] | |
| Entity, Registrant Name | ALIMERA SCIENCES, INC. |
| Document, Type | 8-K |
| Document, Period End Date | Aug. 06, 2024 |
| Entity, Incorporation, State or Country Code | DE |
| Entity, File Number | 001-34703 |
| Entity, Tax Identification Number | 20-0028718 |
| Entity, Address, Address Line One | 6310 Town Square |
| Entity, Address, Address Line Two | Suite 400 |
| Entity, Address, City or Town | Alpharetta |
| Entity, Address, State or Province | GA |
| Entity, Address, Postal Zip Code | 30005 |
| City Area Code | 678 |
| Local Phone Number | 990-5740 |
| Written Communications | true |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.01 par value per share |
| Trading Symbol | ALIM |
| Security Exchange Name | NASDAQ |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0001267602 |
