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Segment Information, Revenue by Product Lines (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Revenue by product line [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 572,200 | $ 571,300 | $ 560,200 | $ 543,300 | $ 609,600 | $ 638,800 | $ 650,000 | $ 671,100 | $ 2,247,047 | $ 2,569,495 | $ 3,176,718
Nu Skin [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue by product line [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 1,363,539 | 1,562,595 | 1,641,618
Pharmanex [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue by product line [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 877,924 | 1,000,279 | 1,529,211
Other [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue by product line [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | $ 5,584 | $ 6,621 | $ 5,889

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