| Cover Cover | Mar. 10, 2020 | Nov. 08, 2019 |
| Cover page. | ||
| Document Type | 8-K | |
| Document Period End Date | Mar. 10, 2020 | |
| Entity Registrant Name | WORKHORSE GROUP INC. | |
| Entity Incorporation, State or Country Code | NV | |
| Entity File Number | 000-53704 | |
| Entity Tax Identification Number | 26-1394771 | |
| Entity Address, Address Line One | 100 Commerce Drive | |
| Entity Address, City or Town | Loveland | |
| Entity Address, State or Province | OH | |
| Entity Address, Postal Zip Code | 45140 | |
| City Area Code | (513) | |
| Local Phone Number | 360-4704 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false | |
| Entity Emerging Growth Company | false | |
| Title of 12(b) Security | Common Stock, $0.001 par value per share | |
| Trading Symbol | WKHS | |
| Entity Central Index Key | 0001425287 | |
| Amendment Flag | false |
