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Inventories (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Inventory Disclosure [Abstract]    
Finished goods $ 73,368 $ 67,187
Work in process 285 286
Raw materials 2,481 2,346
Packaging and supplies 1,728 1,122
Total $ 77,862 $ 70,941