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BUSINESS COMBINATIONS - Schedule of Business Acquisition, Pro Forma Information (Details) - Hiya direct-to-consumer - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 28, 2024	Sep. 28, 2024
Business Combination, Separately Recognized Transaction [Line Items]
Pro forma net sales	$ 229,985	$ 721,815
Pro forma net earnings attributable to USANA	$ 6,622	$ 30,562

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