| Cover | Sep. 22, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 22, 2021 |
| Entity File Number | 000-54717 |
| Entity Registrant Name | BIONIK LABORATORIES CORP. |
| Entity Central Index Key | 0001508381 |
| Entity Tax Identification Number | 27-1340346 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 483 Bay Street |
| Entity Address, Address Line Two | N105 |
| Entity Address, City or Town | Toronto |
| Entity Address, State or Province | ON |
| Entity Address, Postal Zip Code | M5G 2C9 |
| City Area Code | 416 |
| Local Phone Number | 640-7887 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
