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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2018
Property Plant And Equipment [Abstract]  
Property, Plant and Equipment

(1) Property, Plant and Equipment

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

 

 

 

2018

 

 

2017

 

 

Estimated

useful lives

Land

 

$

2,548

 

 

$

2,458

 

 

 

Buildings and improvements

 

 

17,555

 

 

 

16,678

 

 

10 to 30 years

Machinery and equipment

 

 

109,064

 

 

 

107,722

 

 

3 to 15 years

Office furniture, fixtures and equipment

 

 

5,655

 

 

 

4,925

 

 

3 to 10 years

Automotive equipment

 

 

1,116

 

 

 

735

 

 

3 to 6 years

Construction in progress

 

 

2,513

 

 

 

1,917

 

 

 

Total gross value

 

 

138,451

 

 

 

134,435

 

 

 

Less accumulated depreciation

 

 

(89,199

)

 

 

(85,114

)

 

 

Total net value

 

$

49,252

 

 

$

49,321

 

 

 

 

For the years ended December 31, 2018, 2017, and 2016, the Company’s aggregate depreciation expense related to property and equipment was $8,142, $8,154, and $8,307, respectively. For the years ended December 31, 2018, 2017, and 2016, the Company eliminated from assets and accumulated depreciation $4,057, $6,317 and $16,652 of fully depreciated assets, respectively.