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Segment Information - Narrative (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
segment
country
Dec. 31, 2015
USD ($)
Segment Reporting Information [Line Items]    
Net revenues | $ $ 144,245 $ 138,352
Number of operating segments | segment 4  
Number of reportable segments | segment 3  
International Markets    
Segment Reporting Information [Line Items]    
Net revenues | $ $ 115,900 $ 98,200
International Markets | AEI | Nutritional and Wellness    
Segment Reporting Information [Line Items]    
Number of countries with sales presence | country 50  
Net Revenues    
Segment Reporting Information [Line Items]    
Net revenues, concentration risk percentage 80.40% 71.00%
Consolidated Revenues    
Segment Reporting Information [Line Items]    
Net revenues, concentration risk percentage 75.00%