| Cover | May 17, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 17, 2021 |
| Entity File Number | 001-37769 |
| Entity Registrant Name | VBI Vaccines Inc/BC |
| Entity Central Index Key | 0000764195 |
| Entity Incorporation, State or Country Code | A1 |
| Entity Address, Address Line One | 222 Third Street |
| Entity Address, Address Line Two | Suite 2241 |
| Entity Address, City or Town | Cambridge |
| Entity Address, State or Province | MA |
| Entity Address, Postal Zip Code | 02142 |
| City Area Code | (617) |
| Local Phone Number | 830-3031 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Shares, no par value per share |
| Trading Symbol | VBIV |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | true |
