Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Details)

v3.8.0.1
Segment Information (Details)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
USD ($)
segment
Mar. 31, 2017
USD ($)
Dec. 31, 2017
USD ($)
Segment information      
Number of business segments | segment 4    
Number of operating segments | segment 4    
Net sales:      
Total net sales revenue $ 87,342 $ 83,098  
Contribution margin:      
Total contribution margin 33,267 32,387  
Selling, general and administrative 32,386 30,336  
Operating income 881 2,051  
Other income, net 740 1,275  
Income before provision for income taxes 1,621 3,326  
Property, plant and equipment      
Total property, plant and equipment 67,094   $ 69,106
United States      
Net sales:      
Total net sales revenue 35,227 37,735  
Property, plant and equipment      
Total property, plant and equipment 64,032   65,928
South Korea      
Net sales:      
Total net sales revenue 14,584 11,346  
Other      
Net sales:      
Total net sales revenue 37,531 34,017  
Property, plant and equipment      
Total property, plant and equipment 3,062   $ 3,178
NSP Americas      
Net sales:      
Total net sales revenue 41,872 44,645  
Contribution margin:      
Total contribution margin 17,335 19,195  
NSP Americas | General health      
Net sales:      
Total net sales revenue 17,746 19,866  
NSP Americas | Immune      
Net sales:      
Total net sales revenue 5,544 5,073  
NSP Americas | Cardiovascular      
Net sales:      
Total net sales revenue 3,100 3,316  
NSP Americas | Digestive      
Net sales:      
Total net sales revenue 11,712 12,148  
NSP Americas | Personal care      
Net sales:      
Total net sales revenue 1,825 1,886  
NSP Americas | Weight management      
Net sales:      
Total net sales revenue 1,945 2,356  
NSP Russia, Central and Eastern Europe      
Net sales:      
Total net sales revenue 9,551 8,446  
Contribution margin:      
Total contribution margin 3,204 2,924  
NSP Russia, Central and Eastern Europe | General health      
Net sales:      
Total net sales revenue 4,131 3,943  
NSP Russia, Central and Eastern Europe | Immune      
Net sales:      
Total net sales revenue 1,029 862  
NSP Russia, Central and Eastern Europe | Cardiovascular      
Net sales:      
Total net sales revenue 695 595  
NSP Russia, Central and Eastern Europe | Digestive      
Net sales:      
Total net sales revenue 2,431 2,088  
NSP Russia, Central and Eastern Europe | Personal care      
Net sales:      
Total net sales revenue 960 642  
NSP Russia, Central and Eastern Europe | Weight management      
Net sales:      
Total net sales revenue 305 316  
Synergy WorldWide      
Net sales:      
Total net sales revenue 31,817 27,313  
Contribution margin:      
Total contribution margin 9,508 8,199  
Synergy WorldWide | General health      
Net sales:      
Total net sales revenue 8,640 6,687  
Synergy WorldWide | Immune      
Net sales:      
Total net sales revenue 149 121  
Synergy WorldWide | Cardiovascular      
Net sales:      
Total net sales revenue 13,330 11,103  
Synergy WorldWide | Digestive      
Net sales:      
Total net sales revenue 3,825 3,465  
Synergy WorldWide | Personal care      
Net sales:      
Total net sales revenue 2,140 2,067  
Synergy WorldWide | Weight management      
Net sales:      
Total net sales revenue 3,733 3,870  
NSP China      
Net sales:      
Total net sales revenue 4,102 2,694  
Contribution margin:      
Total contribution margin 3,220 2,069  
NSP China | General health      
Net sales:      
Total net sales revenue 343 495  
NSP China | Immune      
Net sales:      
Total net sales revenue 146 47  
NSP China | Cardiovascular      
Net sales:      
Total net sales revenue 561 517  
NSP China | Digestive      
Net sales:      
Total net sales revenue 2,456 1,431  
NSP China | Personal care      
Net sales:      
Total net sales revenue 253 42  
NSP China | Weight management      
Net sales:      
Total net sales revenue 343 162  
Selling, General and Administrative Expenses | NSP China      
Property, plant and equipment      
Service fees $ 1,500 $ 900  
Natures Sunshine Products Brand      
Segment information      
Number of operating segments | segment 3    
Synergy WorldWide      
Segment information      
Number of operating segments | segment 1