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Segment Information, Segment Contribution (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Contribution [Abstract]
Operating income	$ 58,074	$ 74,202	$ 94,639	$ 142,855
Other income (expense)	1,581	(3,326)	(4,593)	(6,174)
Income before provision for income taxes	59,655	70,876	90,046	136,681
Operating Segment [Member]
Segment Contribution [Abstract]
Operating income	135,629	141,393	242,578	279,187
Operating Segment [Member] | Nu Skin [Member]
Segment Contribution [Abstract]
Operating income	135,714	142,600	246,664	280,377
Operating Segment [Member] | Nu Skin [Member] | Mainland China [Member]
Segment Contribution [Abstract]
Operating income	43,668	51,087	81,055	110,254
Operating Segment [Member] | Nu Skin [Member] | South Korea [Member]
Segment Contribution [Abstract]
Operating income	24,090	25,979	48,189	51,647
Operating Segment [Member] | Nu Skin [Member] | Americas/Pacific [Member]
Segment Contribution [Abstract]
Operating income	24,343	16,420	34,928	28,439
Operating Segment [Member] | Nu Skin [Member] | Southeast Asia [Member]
Segment Contribution [Abstract]
Operating income	16,977	20,840	33,695	38,832
Operating Segment [Member] | Nu Skin [Member] | Japan [Member]
Segment Contribution [Abstract]
Operating income	16,455	15,823	31,047	29,929
Operating Segment [Member] | Nu Skin [Member] | EMEA [Member]
Segment Contribution [Abstract]
Operating income	3,342	3,234	3,973	4,585
Operating Segment [Member] | Nu Skin [Member] | Hong Kong/Taiwan [Member]
Segment Contribution [Abstract]
Operating income	6,839	9,217	13,777	16,691
Operating Segment [Member] | Manufacturing [Member]
Segment Contribution [Abstract]
Operating income	5,402	3,375	8,251	7,021
Operating Segment [Member] | Grow Tech [Member]
Segment Contribution [Abstract]
Operating income	(5,487)	(4,582)	(12,337)	(8,211)
Corporate and Other [Member]
Segment Contribution [Abstract]
Operating income	$ (77,555)	$ (67,191)	$ (147,939)	$ (136,332)

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