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Property, Plant and Equipment
6 Months Ended
Jun. 30, 2017
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, Plant and Equipment
 
Property, plant and equipment is comprised of the following:
 
As of
 
June 30,
 
December 31,
 
2017
 
2016
Land
$
2,635

 
$
2,330

Buildings and improvements
64,309

 
63,621

Machinery and equipment
220,995

 
213,198

Less: Accumulated depreciation
(202,765
)
 
(197,038
)
Property, plant and equipment, net
$
85,174

 
$
82,111

 
 
 
 
Depreciation expense for the six months ended June 30, 2017
 
 
$
6,524

Depreciation expense for the six months ended June 30, 2016
 
 
$
6,308