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Property, Plant and Equipment (Tables)
3 Months Ended
Mar. 31, 2019
Property Plant And Equipment [Abstract]  
Summary of Property, Plant and Equipment Property, plant and equipment at March 31, 2019 and December 31, 2018 consists of the following:

 

 

 

March 31,

2019

 

 

December 31,

2018

 

Land

 

$

2,548

 

 

$

2,548

 

Buildings and improvements

 

 

17,854

 

 

 

17,555

 

Machinery and equipment

 

 

109,033

 

 

 

109,064

 

Office furniture, fixtures and equipment

 

 

5,819

 

 

 

5,655

 

Automotive equipment

 

 

1,498

 

 

 

1,116

 

Construction in progress

 

 

4,764

 

 

 

2,513

 

Total

 

 

141,516

 

 

 

138,451

 

Less accumulated depreciation

 

 

(90,137

)

 

 

(89,199

)

Property, plant and equipment, net

 

$

51,379

 

 

$

49,252