Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Details)

v3.5.0.2
Segment Information (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2016
USD ($)
segment
Sep. 30, 2015
USD ($)
Dec. 31, 2015
USD ($)
Segment information          
Number of business segments | segment     4    
Number of operating segments | segment     3    
Net sales revenue:          
Total net sales revenue $ 85,441 $ 79,586 $ 257,209 $ 244,711  
Contribution margin:          
Total contribution margin 34,245 30,253 100,247 92,489  
Selling, general and administrative 29,187 27,115 88,821 80,837  
Operating income 5,058 3,138 11,426 11,652  
Other income (expense), net 20 (247) 957 (567)  
Income from continuing operations before provision for income taxes 5,078 2,891 12,383 11,085  
Property, plant and equipment          
Total property, plant and equipment 72,921   72,921   $ 68,728
United States          
Net sales revenue:          
Total net sales revenue 36,473 36,603 112,366 112,179  
Property, plant and equipment          
Total property, plant and equipment 70,420   70,420   66,044
Other          
Net sales revenue:          
Total net sales revenue 34,885 30,792 102,089 96,191  
Property, plant and equipment          
Total property, plant and equipment 2,501   2,501   $ 2,684
South Korea (Synergy)          
Net sales revenue:          
Total net sales revenue 14,083 12,191 42,754 36,341  
NSP Americas          
Net sales revenue:          
Total net sales revenue 43,260 44,483 133,168 136,043  
Contribution margin:          
Total contribution margin 19,057 18,685 57,077 57,232  
NSP Americas | General health          
Net sales revenue:          
Total net sales revenue 19,063 20,119 58,914 59,607  
NSP Americas | Immune          
Net sales revenue:          
Total net sales revenue 4,599 5,095 13,913 16,350  
NSP Americas | Cardiovascular          
Net sales revenue:          
Total net sales revenue 3,193 3,026 9,723 9,670  
NSP Americas | Digestive          
Net sales revenue:          
Total net sales revenue 11,684 12,521 36,608 39,149  
NSP Americas | Personal care          
Net sales revenue:          
Total net sales revenue 1,925 952 5,708 2,792  
NSP Americas | Weight management          
Net sales revenue:          
Total net sales revenue 2,796 2,770 8,302 8,475  
NSP Russia, Central and Eastern Europe          
Net sales revenue:          
Total net sales revenue 6,421 6,321 19,042 20,579  
Contribution margin:          
Total contribution margin 2,231 2,287 6,477 7,197  
NSP Russia, Central and Eastern Europe | General health          
Net sales revenue:          
Total net sales revenue 2,732 2,532 7,956 8,210  
NSP Russia, Central and Eastern Europe | Immune          
Net sales revenue:          
Total net sales revenue 650 770 2,047 2,446  
NSP Russia, Central and Eastern Europe | Cardiovascular          
Net sales revenue:          
Total net sales revenue 538 391 1,508 1,290  
NSP Russia, Central and Eastern Europe | Digestive          
Net sales revenue:          
Total net sales revenue 1,741 1,829 5,269 5,651  
NSP Russia, Central and Eastern Europe | Personal care          
Net sales revenue:          
Total net sales revenue 517 563 1,619 2,072  
NSP Russia, Central and Eastern Europe | Weight management          
Net sales revenue:          
Total net sales revenue 243 236 643 910  
Synergy WorldWide          
Net sales revenue:          
Total net sales revenue 31,331 27,797 94,192 85,045  
Contribution margin:          
Total contribution margin 9,556 8,809 28,740 26,677  
Synergy WorldWide | General health          
Net sales revenue:          
Total net sales revenue 8,711 8,006 27,045 23,353  
Synergy WorldWide | Immune          
Net sales revenue:          
Total net sales revenue 205 91 455 368  
Synergy WorldWide | Cardiovascular          
Net sales revenue:          
Total net sales revenue 13,188 11,831 39,386 36,898  
Synergy WorldWide | Digestive          
Net sales revenue:          
Total net sales revenue 3,383 2,485 9,312 7,153  
Synergy WorldWide | Personal care          
Net sales revenue:          
Total net sales revenue 1,838 1,784 5,725 5,346  
Synergy WorldWide | Weight management          
Net sales revenue:          
Total net sales revenue 4,006 3,600 12,269 11,927  
China and New Markets          
Net sales revenue:          
Total net sales revenue 4,429 985 10,807 3,044  
Contribution margin:          
Total contribution margin 3,401 472 7,953 1,383  
China and New Markets | General health          
Net sales revenue:          
Total net sales revenue 575 471 2,583 1,428  
China and New Markets | Immune          
Net sales revenue:          
Total net sales revenue 206 123 553 384  
China and New Markets | Cardiovascular          
Net sales revenue:          
Total net sales revenue 948 70 2,471 224  
China and New Markets | Digestive          
Net sales revenue:          
Total net sales revenue 2,118 240 3,640 755  
China and New Markets | Personal care          
Net sales revenue:          
Total net sales revenue 189 24 650 70  
China and New Markets | Weight management          
Net sales revenue:          
Total net sales revenue 393 57 910 183  
China and New Markets | Hong Kong          
Contribution margin:          
Selling, general and administrative $ 1,500 $ 0 $ 3,400 $ 0