Segment Information, Depreciation and Amortization and Capital Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Summarized Financial Information [Abstract]
Depreciation and amortization	$ 19,607	$ 18,907
Capital expenditures	13,765	12,652
Mainland China [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	3,116	3,487
Capital expenditures	1,681	1,869
Americas/Pacific [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	214	214
Capital expenditures	274	189
South Korea [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	1,524	1,667
Capital expenditures	49	0
Southeast Asia [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	477	559
Capital expenditures	94	51
Japan [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	1,048	915
Capital expenditures	172	311
Hong Kong/Taiwan [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	516	323
Capital expenditures	463	482
EMEA [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	440	176
Capital expenditures	34	35
Nu Skin [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	7,335	7,341
Capital expenditures	2,767	2,937
Corporate and Other [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	9,823	8,523
Capital expenditures	6,411	6,379
Manufacturing [Member] | Operating Segments [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	1,574	2,825
Capital expenditures	1,602	749
Grow Tech [Member] | Operating Segments [Member]
Summarized Financial Information [Abstract]
Depreciation and amortization	875	218
Capital expenditures	$ 2,985	$ 2,587