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Property, Plant and Equipment (Tables)
3 Months Ended
Mar. 31, 2018
Property Plant And Equipment [Abstract]  
Summary of Property, Plant and Equipment

Property, plant and equipment at March 31, 2018 and December 31, 2017 consists of the following:

 

 

 

March 31,

2018

 

 

December 31,

2017

 

Land

 

$

2,458

 

 

$

2,458

 

Buildings and improvements

 

 

16,732

 

 

 

16,678

 

Machinery and equipment

 

 

108,250

 

 

 

107,722

 

Office furniture, fixtures and equipment

 

 

5,179

 

 

 

4,713

 

Automotive equipment

 

 

1,010

 

 

 

735

 

Construction in progress

 

 

2,027

 

 

 

1,917

 

Total

 

 

135,656

 

 

 

134,223

 

Less accumulated depreciation

 

 

(87,077

)

 

 

(84,902

)

Property, plant and equipment, net

 

$

48,579

 

 

$

49,321