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Segment Information, Segment Contribution (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Contribution [Abstract] |  |  |
Operating income | $ 257,564 | $ 267,426 | $ 240,860
Other income (expense) | (1,332) | (12,254) | (21,194)
Income before provision for income taxes | 256,232 | 255,172 | 219,666
Operating Segment [Member] |  |  |
Segment Contribution [Abstract] |  |  |
Operating income | 573,431 | 532,036 | 595,211
Operating Segment [Member] | Nu Skin [Member] |  |  |
Segment Contribution [Abstract] |  |  |
Operating income | 574,693 | 535,852 | 596,685
Operating Segment [Member] | Mainland China [Member] |  |  |
Segment Contribution [Abstract] |  |  |
Operating income | 181,024 | 191,570 | 253,598
Operating Segment [Member] | Americas/Pacific [Member] |  |  |
Segment Contribution [Abstract] |  |  |
Operating income | 91,627 | 57,090 | 52,433
Operating Segment [Member] | South Korea [Member] |  |  |
Segment Contribution [Abstract] |  |  |
Operating income | 100,933 | 99,892 | 107,215
Operating Segment [Member] | Southeast Asia [Member] |  |  |
Segment Contribution [Abstract] |  |  |
Operating income | 75,538 | 82,455 | 78,598
Operating Segment [Member] | Japan [Member] |  |  |
Segment Contribution [Abstract] |  |  |
Operating income | 68,027 | 61,081 | 56,676
Operating Segment [Member] | EMEA [Member] |  |  |
Segment Contribution [Abstract] |  |  |
Operating income | 24,078 | 10,195 | 14,773
Operating Segment [Member] | Hong Kong/Taiwan [Member] |  |  |
Segment Contribution [Abstract] |  |  |
Operating income | 33,466 | 33,569 | 33,392
Operating Segment [Member] | Manufacturing [Member] |  |  |
Segment Contribution [Abstract] |  |  |
Operating income | 21,168 | 15,693 | 7,754
Operating Segment [Member] | Grow Tech [Member] |  |  |
Segment Contribution [Abstract] |  |  |
Operating income | (22,430) | (19,509) | (9,228)
Corporate and Other [Member] |  |  |
Segment Contribution [Abstract] |  |  |
Operating income | $ (315,867) | $ (264,610) | $ (354,351)

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