| Cover | Nov. 10, 2024 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 10, 2024 |
| Entity File Number | 001-40579 |
| Entity Registrant Name | Cadiz Inc. |
| Entity Central Index Key | 0000727273 |
| Entity Tax Identification Number | 77-0313235 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 550 S. Hope Street |
| Entity Address, Address Line Two | Suite 2850 |
| Entity Address, City or Town | Los Angeles |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 90071 |
| City Area Code | 213 |
| Local Phone Number | 271-1600 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock, par value $0.01 per share | |
| Title of 12(b) Security | Common Stock, par value $0.01 per share |
| Trading Symbol | CDZI |
| Security Exchange Name | NASDAQ |
| Depositary Shares (each representing a 1/1000th fractional interest in share of 8.875% Series A Cumulative Perpetual Preferred Stock, par value $0.01 per share) | |
| Title of 12(b) Security | Depositary Shares (each representing a 1/1000th fractional interest in share of 8.875% Series A Cumulative |
| Trading Symbol | CDZIP |
| Security Exchange Name | NASDAQ |
