XML 12 R1.htm IDEA: XBRL DOCUMENT v3.21.2
Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2021
Aug. 06, 2021
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2021  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q2  
Trading Symbol HSDT  
Entity Registrant Name HELIUS MEDICAL TECHNOLOGIES, INC.  
Entity Central Index Key 0001610853  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   2,317,772
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity File Number 001-38445  
Entity Tax Identification Number 36-4787690  
Entity Incorporation, State or Country Code DE  
Entity Address, Address Line One 642 Newtown Yardley Road, 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  
Title of 12(b) Security Class A Common Stock, $0.001 par value per share  
Security Exchange Name NASDAQ  
Entity Interactive Data Current Yes  
Document Quarterly Report true  
Document Transition Report false