Property, Plant and Equipment and Inventory (Tables)
 9 Months Ended
Sep. 30, 2016
Property, Plant and Equipment [Abstract]  
Summary of Property, Plant and Equipment
Property, plant and equipment is comprised of the following at September 30, 2016 and December 31, 2015 (in thousands):

 
September 30, 2016
 
December 31, 2015
Machinery and equipment
$
152,757

 
$
126,850

Office furniture, computers and software
12,813

 
8,771

Leasehold improvements
13,232

 
7,582

Buildings and land
43,008

 
31,856

 
221,810

 
175,059

Less: accumulated depreciation
(76,363
)
 
(59,111
)
Total
$
145,447

 
$
115,948
Summary of Inventory
Inventory is comprised of the following at September 30, 2016 and December 31, 2015 (in thousands):

 
September 30, 2016
 
December 31, 2015
Raw materials and supplies
$
26,022

 
$
23,604

Work-in-process
8,966

 
8,763

Finished goods (1)
204,910

 
31,196

Less: obsolescence reserve
(7,911
)
 
(3,658
)
Total
$
231,987

 
$
59,905