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BUSINESS COMBINATIONS - Schedule of Business Acquisition, Pro Forma Information (Details) - Hiya direct-to-consumer - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 29, 2024 | Jun. 29, 2024
Business Combination, Separately Recognized Transaction [Line Items] |  |
Pro forma net sales | $ 238,678 | $ 491,830
Pro forma net earnings attributable to USANA | $ 9,429 | $ 23,939

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