Segment Information - Schedule of Revenue Percentage By Product (Details) - Product Concentration Risk - Revenue Benchmark	12 Months Ended
	Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
USANA Nutritionals
Segment Reporting Information [Line Items]
Concentration risk, percentage	87.00%	87.00%	87.00%
USANA Foods
Segment Reporting Information [Line Items]
Concentration risk, percentage	6.00%	7.00%	7.00%
Personal care and Skincare
Segment Reporting Information [Line Items]
Concentration risk, percentage	6.00%	5.00%	5.00%
All Other
Segment Reporting Information [Line Items]
Concentration risk, percentage	1.00%	1.00%	1.00%