Cover Page. - USD ($)	12 Months Ended
	Dec. 31, 2019	Feb. 28, 2020	Jun. 30, 2019
Cover page.
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	000-53704
Entity Registrant Name	WORKHORSE GROUP INC.
Entity Incorporation, State or Country Code	NV
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
Title of 12(b) Security	Common Stock, $0.001 par value per share
Trading Symbol	WKHS
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 167,973,000
Entity Common Stock, Shares Outstanding		70,671,139
Entity Central Index Key	0001425287
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY