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Document And Entity Information
Sep. 06, 2024
Document Information [Line Items]  
Entity, Registrant Name Cassava Sciences, Inc.
Document, Type 8-K/A
Document, Period End Date Sep. 06, 2024
Entity, Incorporation, State or Country Code DE
Entity, File Number 001-41905
Entity, Tax Identification Number 91-1911336
Entity, Address, Address Line One 6801 N Capital of Texas Highway
Entity, Address, Address Line Two Building 1; Suite 300
Entity, Address, City or Town Austin
Entity, Address, State or Province TX
Entity, Address, Postal Zip Code 78731
City Area Code 512
Local Phone Number 501-2444
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock
Trading Symbol SAVA
Security Exchange Name NASDAQ
Entity, Emerging Growth Company false
Amendment Description Form 8-K/A date of report 09-06-24
Amendment Flag true
Entity, Central Index Key 0001069530