Inventories
 9 Months Ended
Sep. 30, 2016
Inventory Disclosure [Abstract]  
Inventories
Inventories
Inventories were comprised of the following as of September 30, 2016 and December 31, 2015:
 
September 30, 2016
 
December 31, 2015
Finished goods
$
41,245

 
$
43,031

Work in process
36,669

 
32,863

Raw materials and supplies
83,098

 
73,751

 
$
161,012

 
$
149,645