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Segment Information, Revenue by Product Line (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenue by Product Line [Abstract]
Revenue	$ 2,279,099	$ 2,207,797	$ 2,247,047
Nu Skin [Member]
Revenue by Product Line [Abstract]
Revenue	1,456,386	1,308,135	1,363,539
Pharmanex [Member]
Revenue by Product Line [Abstract]
Revenue	817,230	892,738	877,924
Other [Member]
Revenue by Product Line [Abstract]
Revenue	$ 5,483	$ 6,924	$ 5,584

X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

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Balance Type:	credit
Period Type:	duration

X

- References

No definition available.

+ Details

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- Details

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X

- Details

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X

- Details

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