Segment Information (Schedule Of Revenue Percentage By Product) (Details) |
12 Months Ended | ||
|---|---|---|---|
Dec. 30, 2017 |
Dec. 31, 2016 |
Jan. 02, 2016 |
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| USANA Nutritionals [Member] | |||
| Revenue from External Customer [Line Items] | |||
| Percentage of product revenue | 83.00% | 83.00% | 81.00% |
| USANA Foods [Member] | |||
| Revenue from External Customer [Line Items] | |||
| Percentage of product revenue | 9.00% | 10.00% | 11.00% |
| Sense - Beautiful Science [Member] | |||
| Revenue from External Customer [Line Items] | |||
| Percentage of product revenue | 6.00% | 6.00% | 7.00% |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Percentage Of Product Revenue No definition available.
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