|
Segment Information (Percentage Of Total Product Revenue Contributed By Company's Nutritional And Care Products) (Details)
|
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 29, 2013
|
Jun. 30, 2012
|
Jun. 29, 2013
|
Jun. 30, 2012
|
|
|
USANA Nutritionals [Member]
|
||||
| Revenue from External Customer [Line Items] | ||||
| Percentage of product revenue | 81.00% | 79.00% | 80.00% | 79.00% |
|
USANA Foods [Member]
|
||||
| Revenue from External Customer [Line Items] | ||||
| Percentage of product revenue | 12.00% | 12.00% | 12.00% | 12.00% |
|
Sense - Beautiful Science [Member]
|
||||
| Revenue from External Customer [Line Items] | ||||
| Percentage of product revenue | 6.00% | 7.00% | 6.00% | 7.00% |