Inventory consisted of the following at December 31, 2016 and 2015:
 
 
 
December 31,
 
 
 
2016
 
2015 (a)
 
Raw materials
 
$
59,987
 
$
36,628
 
Work-in-process
 
 
74,599
 
 
37,574
 
Finished goods
 
 
32,525
 
 
15,029
 
Total inventory
 
$
167,111
 
$
89,231
 
 
(a)   Certain adjustments have been made to December 31, 2015 inventory classifications to conform to current year presentation.