Segment Information (Tables)
 12 Months Ended
Dec. 31, 2019
Segment Information [Abstract]  
Revenue by Segment Revenue by Segment


 
Year Ended December 31,
  
(U.S. dollars in thousands)
  
2019
    
2018
    
2017
  
Nu Skin
                  
Mainland China
  
$
722,526
    
$
886,472
    
$
716,991
  
Americas/Pacific
    
349,078
      
385,034
      
342,429
  
South Korea
    
329,978
      
373,357
      
361,692
  
Southeast Asia
    
301,620
      
316,890
      
268,631
  
Japan
    
260,039
      
254,939
      
256,085
  
EMEA
    
167,165
      
182,394
      
160,275
  
Hong Kong/Taiwan
    
166,335
      
185,893
      
166,696
  
Other
    
1,621
      
3,423
      
6,300
  
Total Nu Skin
    
2,298,362
      
2,588,402
      
2,279,099
  
Manufacturing (1)
    
121,917
      
90,606
      
—
  
Grow Tech
    
137
      
—
      
—
  
Total
  
$
2,420,416
    
$
2,679,008
    
$
2,279,099
  

(1)
The Manufacturing segment had $25.7 million, $23.5 million and zero of intersegment revenue for the years ended December 31, 2019, 2018 and 2017, respectively.  Intersegment revenue is eliminated in the consolidated financial statements, as well as the reported segment revenue in the table above.
Segment Contribution Segment Contribution


 
Year Ended December 31,
  
(U.S. dollars in thousands)
  
2019
    
2018
    
2017
  
Nu Skin
                  
Mainland China
  
$
191,570
    
$
253,598
    
$
211,625
  
Americas/Pacific
    
57,090
      
52,433
      
51,885
  
South Korea
    
99,892
      
107,215
      
100,964
  
Southeast Asia
    
82,455
      
78,598
      
63,296
  
Japan
    
61,081
      
56,676
      
51,372
  
EMEA
    
10,195
      
14,773
      
11,749
  
Hong Kong/Taiwan
    
33,569
      
33,392
      
27,958
  
Nu Skin contribution
    
535,852
      
596,685
      
518,849
  
Manufacturing
    
15,693
      
7,754
      
—
  
Grow Tech
    
(19,509
)
    
(9,228
)
    
—
  
Total segment contribution
    
532,036
      
595,211
      
518,849
  
Corporate and other
    
(264,610
)
    
(354,351
)
    
(244,366
)
Operating income
    
267,426
      
240,860
      
274,483
  
Other income (expense)
    
(12,254
)
    
(21,194
)
    
(8,916
)
Income before provision for income taxes
  
$
255,172
    
$
219,666
    
$
265,567
  
Depreciation and Amortization and Capital Expenditures Depreciation and Amortization


 
Year Ended December 31,
  
(U.S. dollars in thousands)
  
2019
    
2018
    
2017
  
Nu Skin
                  
Mainland China
  
$
10,496
    
$
13,036
    
$
15,122
  
Americas/Pacific
    
864
      
988
      
1,746
  
South Korea
    
5,093
      
6,266
      
6,499
  
Southeast Asia
    
1,915
      
2,123
      
2,234
  
Japan
    
3,866
      
3,604
      
3,554
  
EMEA
    
1,260
      
847
      
985
  
Hong Kong/Taiwan
    
2,310
      
1,316
      
1,395
  
Total Nu Skin
    
25,804
      
28,180
      
31,535
  
Manufacturing
    
6,689
      
11,281
      
—
  
Grow Tech
    
4,008
      
1,885
      
—
  
Corporate and other
    
40,149
      
41,657
      
40,029
  
Total
  
$
76,650
    
$
83,003
    
$
71,564
  

Capital Expenditures


  
Year Ended December 31,
  
(U.S. dollars in thousands)
  
2019
    
2018
    
2017
  
Nu Skin
                  
Mainland China
  
$
14,814
    
$
11,658
    
$
4,539
  
Americas/Pacific
    
1,340
      
974
      
800
  
South Korea
    
1,223
      
285
      
469
  
Southeast Asia
    
759
      
1,120
      
1,753
  
Japan
    
1,528
      
788
      
994
  
EMEA
    
364
      
734
      
1,168
  
Hong Kong/Taiwan
    
3,203
      
4,113
      
1,350
  
Total Nu Skin
    
23,231
      
19,672
      
11,073
  
Manufacturing
    
6,595
      
5,486
      
—
  
Grow Tech
    
6,938
      
14,591
      
—
  
Corporate and other
    
29,303
      
30,622
      
49,083
  
Total
  
$
66,067
    
$
70,371
    
$
60,156
  
Revenue by Major Market Sales are recorded in the jurisdiction in which the transactions occurred:


 
Year Ended December 31,
  
(U.S. dollars in thousands)
  
2019
    
2018
    
2017
  
Mainland China
  
$
722,526
    
$
886,472
    
$
716,991
  
South Korea
    
329,978
      
373,357
      
361,692
  
Japan
    
260,039
      
254,939
      
256,085
  
United States
    
324,727
      
311,436
      
218,734
  
All others
    
783,146
      
852,804
      
725,597
  
Total
  
$
2,420,416
    
$
2,679,008
    
$
2,279,099
  
Revenue by Product Line Revenue by Product Line


 
Year Ended December 31,
  
(U.S. dollars in thousands)
  
2019
    
2018
    
2017
  
Personal Care
  
$
1,423,485
    
$
1,659,737
    
$
1,456,386
  
Wellness
    
863,125
      
921,328
      
817,230
  
Other
    
133,806
      
97,943
      
5,483
  
Total
  
$
2,420,416
    
$
2,679,008
    
$
2,279,099
  
Long-Lived Assets by Major Market


 
Year Ended December 31,
  
(U.S. dollars in thousands)
  
2019
    
2018
    
2017
  
United States
  
$
354,410
    
$
317,516
    
$
302,884
  
Mainland China
    
136,845
      
89,447
      
97,046
  
South Korea
    
35,286
      
36,325
      
42,211
  
Japan
    
12,015
      
6,864
      
9,342
  
All others
    
59,374
      
14,383
      
13,104
  
Total
  
$
597,930
    
$
464,535
    
$
464,587