Inventories (Tables)
 12 Months Ended
Dec. 31, 2016
Inventory Disclosure [Abstract]  
Inventories
Inventories consist of the following at December 31:
 
2016
 
2015
Raw materials
$
34,560

 
$
28,989

Work in process
3,775

 
3,014

Finished goods
107,073

 
53,887

Total
$
145,408

 
$
85,890