Annual report pursuant to Section 13 and 15(d)

Document And Entity Information

Document And Entity Information - USD ($)
12 Months Ended
Dec. 31, 2021
Mar. 08, 2022
Jun. 30, 2021
Document Information [Line Items]      
Entity Central Index Key 0001401040    
Entity Registrant Name DiaMedica Therapeutics Inc.    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2021    
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
Document Transition Report false    
Entity File Number 001-36291    
Entity Incorporation, State or Country Code A1    
Entity Address, Address Line One Two Carlson Parkway, Suite 26    
Entity Address, City or Town Minneapolis    
Entity Address, State or Province MN    
Entity Address, Postal Zip Code 55447    
City Area Code 763    
Local Phone Number 612-6755    
Title of 12(b) Security Voting Common Shares, no par value per share    
Trading Symbol DMAC    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status No    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Ex Transition Period true    
ICFR Auditor Attestation Flag false    
Entity Shell Company false    
Entity Public Float     $ 78,100,000
Entity Common Stock, Shares Outstanding   26,443,067  
Auditor Name Baker Tilly US, LLP    
Auditor Location Minneapolis, MN    
Auditor Firm ID 23