| Cover Page | Aug. 26, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 26, 2024 |
| Entity Registrant Name | ALT5 Sigma Corporation |
| Entity Central Index Key | 0000862861 |
| Entity Incorporation, State or Country Code | NV |
| Entity File Number | 000-19621 |
| Entity Tax Identification Number | 41-1454591 |
| Entity Address, Address Line One | 325 E. Warm Springs Road |
| Entity Address, Address Line Two | Suite 102 |
| Entity Address, City or Town | Las Vegas |
| Entity Address, State or Province | NV |
| Entity Address, Postal Zip Code | 89119 |
| City Area Code | 702 |
| Local Phone Number | 997-5968 |
| Entity Information, Former Legal or Registered Name | JanOne Inc. |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.001 par value per share |
| Trading Symbol | ALTS |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
