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Property, Plant and Equipment, Net
 6 Months Ended
Jun. 30, 2016
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment, Net
Property, Plant and Equipment, Net
Property, plant and equipment consist of the following:
 
June 30,
2016
 
December 31,
2015
Land and land improvements
$
9,682

 
$
9,119

Buildings and building improvements
7,526

 
7,520

Furniture and fixtures
2,352

 
1,283

Equipment
40,312

 
36,016

Leasehold improvements
7,630

 
6,888

Computer hardware and software
6,334

 
5,960

Construction and other assets in progress
2,440

 
2,193

 
76,276

 
68,979

Less: Accumulated depreciation and amortization
(29,617
)
 
(26,240
)
Property, plant and equipment, net
$
46,659

 
$
42,739


Depreciation expense was $2,304 and $1,828 for the three months ended June 30, 2016 and 2015, respectively, and $4,437 and $3,781 for the six months ended June 30, 2016 and 2015, respectively.