| Cover | Aug. 10, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 10, 2021 |
| Entity File Number | 000-21617 |
| Entity Registrant Name | ProPhase Labs, Inc. |
| Entity Central Index Key | 0000868278 |
| Entity Tax Identification Number | 23-2577138 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 711 Stewart Ave. |
| Entity Address, City or Town | Garden City |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 11530 |
| City Area Code | (215) |
| Local Phone Number | 345-0919 |
| 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 $0.0005 |
| Trading Symbol | PRPH |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
