| Cover | Oct. 30, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 30, 2024 |
| Entity File Number | 000-22333 |
| Entity Registrant Name | NANOPHASE TECHNOLOGIES CORPORATION |
| Entity Central Index Key | 0000883107 |
| Entity Tax Identification Number | 36-3687863 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 1319 Marquette Drive |
| Entity Address, City or Town | Romeoville |
| Entity Address, State or Province | IL |
| Entity Address, Postal Zip Code | 60446 |
| City Area Code | 630 |
| Local Phone Number | 771-6708 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
