v3.26.1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2026
May 01, 2026
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2026  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Entity Registrant Name TENAYA THERAPEUTICS, INC.  
Entity Central Index Key 0001858848  
Entity File Number 001-40656  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 81-3789973  
Entity Address, Address Line One 171 Oyster Point Boulevard  
Entity Address, Address Line Two Suite 500  
Entity Address, City or Town South San Francisco  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 94080  
City Area Code 650  
Local Phone Number 825-6990  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Title of 12(b) Security Common Stock, par value $0.0001 per share  
Trading Symbol TNYA  
Security Exchange Name NASDAQ  
Document Quarterly Report true  
Document Transition Report false  
Entity Common Stock, Shares Outstanding   216,998,876