Quarterly report pursuant to Section 13 or 15(d)

Note J - Segment Information - Schedule of Revenue Percentage By Product (Details)

v3.20.2
Note J - Segment Information - Schedule of Revenue Percentage By Product (Details) - Product Concentration Risk [Member] - Revenue Benchmark [Member]
3 Months Ended 9 Months Ended
Sep. 26, 2020
Sep. 28, 2019
Sep. 26, 2020
Sep. 28, 2019
USANA Nutritionals [Member]        
Percentage of product revenue 85.00% 81.00% 83.00% 83.00%
USANA Foods [Member]        
Percentage of product revenue 9.00% 9.00% 11.00% 8.00%
Personal Care and Skincare [Member]        
Percentage of product revenue 5.00% 9.00% 5.00% 8.00%
All Other [Member]        
Percentage of product revenue 1.00% 1.00% 1.00% 1.00%