Segment Information, Revenue by Segment (Details) $ in Thousands		3 Months Ended
		Mar. 31, 2019 USD ($) Segment	Mar. 31, 2018 USD ($)
Segment Information [Abstract]
Number of reportable segments | Segment		9
Number of geographic segments | Segment		7
Number of new segments previously included in Other category | Segment		2
Revenue by Segment [Abstract]
Revenue		$ 623,623	$ 616,219
Other [Member]
Revenue by Segment [Abstract]
Revenue		(1,426)	235
Mainland China [Member]
Revenue by Segment [Abstract]
Revenue		208,488	197,531
Americas/Pacific [Member]
Revenue by Segment [Abstract]
Revenue		86,456	92,289
South Korea [Member]
Revenue by Segment [Abstract]
Revenue		83,853	88,930
Southeast Asia [Member]
Revenue by Segment [Abstract]
Revenue		72,495	70,860
Japan [Member]
Revenue by Segment [Abstract]
Revenue		62,109	63,224
Hong Kong/Taiwan [Member]
Revenue by Segment [Abstract]
Revenue		40,558	40,992
EMEA [Member]
Revenue by Segment [Abstract]
Revenue		41,818	44,981
Operating Segment [Member] | Manufacturing [Member]
Revenue by Segment [Abstract]
Revenue	[1]	29,272	17,177
Operating Segment [Member] | Grow Tech [Member]
Revenue by Segment [Abstract]
Revenue		0	0
Nu Skin [Member]
Revenue by Segment [Abstract]
Revenue		594,351	599,042
Intersegment Member] | Manufacturing [Member]
Revenue by Segment [Abstract]
Revenue		$ 5,900	$ 3,200

[1] The Manufacturing segment had $5.9 million and $3.2 million of intersegment revenue for the three-month period ended March 31, 2019 and 2018, respectively. Intersegment revenue is eliminated in the consolidated financial statements, as well as the reported segment revenue in the table above.