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Document and Entity Information
Sep. 08, 2021
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Sep. 08, 2021
Entity Registrant Name HELIUS MEDICAL TECHNOLOGIES, INC.
Entity Central Index Key 0001610853
Entity Emerging Growth Company false
Entity File Number 001-38445
Entity Incorporation State Country Code DE
Entity Tax Identification Number 36-4787690
Entity Address, Address Line One 642 Newtown Yardley Road
Entity Address, Address Line Two Suite 100
Entity Address, City or Town Newtown
Entity Address, State or Province PA
Entity Address, Postal Zip Code 18940
City Area Code (215)
Local Phone Number 944-6100
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock
Trading Symbol HSDT
Security Exchange Name NASDAQ