Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

Document And Entity Information - shares
Sep. 26, 2020
Oct. 30, 2020
Document Information [Line Items]    
Entity, Registrant Name USANA HEALTH SCIENCES, INC.  
Current Fiscal Year End Date --12-28  
Document, Fiscal Period Focus Q3  
Document, Fiscal Year Focus 2020  
Document, Type 10-Q/A  
Document, Quarterly Report true  
Document, Period End Date Sep. 26, 2020  
Document, Transition Report false  
Entity, File Number 001-35024  
Entity, Incorporation, State or Country Code UT  
Entity, Tax Identification Number 87-0500306  
Entity, Address, Address Line One 3838 West Parkway Blvd.  
Entity, Address, City or Town Salt Lake City  
Entity, Address, State or Province UT  
Entity, Address, Postal Zip Code 84120  
City Area Code 801  
Local Phone Number 954-7100  
Title of 12(b) Security Common Stock  
Trading Symbol USNA  
Security Exchange Name NYSE  
Entity, Current Reporting Status Yes  
Entity, Interactive Data, Current Yes  
Entity, Filer Category Large Accelerated Filer  
Entity, Small Business false  
Entity, Emerging Growth Company false  
Entity, Shell Company false  
Entity, Common Stock Shares, Outstanding   21,037,938
Amendment Description USANA Health Sciences, Inc. (the “Company,” “we”, “us”, “our”) is filing this amendment (this “Form 10-Q/A”) to our Quarterly Report on Form 10-Q for the quarter ended September 26, 2020 (the “Form 10-Q”), filed with the U.S. Securities and Exchange Commission (“the Commission”) on November 3, 2020, solely to correct a typographical error in a table inserted in Part I - Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations on page 15 that incorrectly presents the percentage of total product revenue contributed by our USANA® Nutritionals and USANA Foods product lines, and our top-selling products as follows: “Optimizers” is corrected to read “63%” instead of “64%”, “Essentials/CellSentials” is corrected to read “20%” instead of “21%”, “USANA Foods” is corrected to read “11%” instead of “9%”, “USANA® Essentials/CellSentials” is corrected to read “13%” instead of “14%”, “Proflavanol®” is corrected to read “11%” instead of “9%, and ‘Probiotic” is corrected to read “10%” instead of “9”.  No other corrections or changes were required to be made to the table on page 15.  
Amendment Flag true  
Entity, Central Index Key 0000896264