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F. PROPERTY, PLANT AND EQUIPMENT
 12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT

NOTE F—PROPERTY, PLANT AND EQUIPMENT

 

Property, plant and equipment consisted of the following for the periods indicated (in thousands):

 

 

 

 

 

 

 

 

 

 

As of December 31, 

 

 

2017

    

2016

Land improvements

 

$

806

 

$

792

Building and improvements

 

 

78,785

 

 

69,368

Machinery and equipment

 

 

168,993

 

 

108,724

Furniture and fixtures

 

 

4,663

 

 

4,227

Computer equipment and software

 

 

8,248

 

 

6,836

Transportation equipment

 

 

718

 

 

236

 

 

 

262,213

 

 

190,183

Less accumulated depreciation and amortization

 

 

(70,194)

 

 

(49,175)

 

 

 

192,019

 

 

141,008

Construction in progress

 

 

4,823

 

 

1,989

Land

 

 

1,101

 

 

1,101

Property, plant and equipment, net

 

$

197,943

 

$

144,098

 

For the years ended December 31, 2017, 2016 and 2015, depreciation expense of property, plant and equipment was $19.9 million $13.7 million and $9.0 million, respectively.