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Segment Information, Segment Contribution (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Contribution [Abstract]
Operating income (loss)	$ 36,565	$ 68,653
Other income (expense)	(6,174)	(2,848)
Income before provision for income taxes	30,391	65,805
Operating Segment [Member]
Segment Contribution [Abstract]
Operating income (loss)	106,949	137,794
Operating Segment [Member] | Nu Skin [Member]
Segment Contribution [Abstract]
Operating income (loss)	110,950	137,777
Operating Segment [Member] | Nu Skin [Member] | Mainland China [Member]
Segment Contribution [Abstract]
Operating income (loss)	37,387	59,167
Operating Segment [Member] | Nu Skin [Member] | South Korea [Member]
Segment Contribution [Abstract]
Operating income (loss)	24,099	25,668
Operating Segment [Member] | Nu Skin [Member] | Americas/Pacific [Member]
Segment Contribution [Abstract]
Operating income (loss)	10,585	12,019
Operating Segment [Member] | Nu Skin [Member] | Southeast Asia [Member]
Segment Contribution [Abstract]
Operating income (loss)	16,718	17,992
Operating Segment [Member] | Nu Skin [Member] | Japan [Member]
Segment Contribution [Abstract]
Operating income (loss)	14,592	14,106
Operating Segment [Member] | Nu Skin [Member] | Hong Kong/Taiwan [Member]
Segment Contribution [Abstract]
Operating income (loss)	6,938	7,474
Operating Segment [Member] | Nu Skin [Member] | EMEA [Member]
Segment Contribution [Abstract]
Operating income (loss)	631	1,351
Operating Segment [Member] | Manufacturing [Member]
Segment Contribution [Abstract]
Operating income (loss)	2,849	3,646
Operating Segment [Member] | Grow Tech [Member]
Segment Contribution [Abstract]
Operating income (loss)	(6,850)	(3,629)
Corporate and Other [Member]
Segment Contribution [Abstract]
Operating income (loss)	$ (70,384)	$ (69,141)

X

- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

+ References

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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