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Acquisitions (Details) - USD ($)
$ in Thousands
Feb. 12, 2018
Jan. 22, 2018
Sep. 30, 2019
Dec. 31, 2018
Feb. 11, 2018
Jan. 21, 2018
Acquisitions [Abstract]            
Goodwill     $ 196,573 $ 196,573    
Nutritional Product Manufacturer [Member]            
Acquisitions [Abstract]            
Percentage of acquired entity held by third party   8.00%        
Innuvate [Member]            
Acquisitions [Abstract]            
Percentage of entity acquired   73.00%        
Ownership interest in equity method investment           27.00%
Consideration paid in cash and shares   $ 23,500        
Goodwill       17,200    
Innuvate [Member] | Nutritional Product Manufacturer [Member]            
Acquisitions [Abstract]            
Percentage of entity acquired   92.00%        
Treviso [Member]            
Acquisitions [Abstract]            
Percentage of entity acquired 65.00%          
Ownership interest in equity method investment         35.00%  
Consideration paid in cash and shares $ 83,900          
Goodwill       42,500    
L&W [Member]            
Acquisitions [Abstract]            
Percentage of entity acquired 100.00%          
Consideration paid in shares $ 25,000          
Goodwill       $ 12,800