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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2016
Property Plant And Equipment [Abstract]  
Property, Plant and Equipment

(1) Property, Plant and Equipment

Property, plant and equipment at December 31, 2016 and 2015 consist of the following:

 

 

 

2016

 

 

2015

 

 

Estimated

useful lives

Land

 

$

2,458

 

 

$

2,458

 

 

 

Buildings and improvements

 

 

15,515

 

 

 

14,726

 

 

10 to 40 years

Machinery and equipment

 

 

102,146

 

 

 

113,506

 

 

3 to 15 years

Office furniture, fixtures and equipment

 

 

5,016

 

 

 

4,997

 

 

3 to 10 years

Automotive equipment

 

 

387

 

 

 

491

 

 

3 to 6 years

Construction in progress

 

 

8,047

 

 

 

3,413

 

 

 

Total gross value

 

 

133,569

 

 

 

139,591

 

 

 

Less accumulated depreciation

 

 

(83,274

)

 

 

(91,619

)

 

 

Total net value

 

$

50,295

 

 

$

47,972

 

 

 

 

For the years ended December 31, 2016, 2015, and 2014, the Company’s aggregate depreciation expense related to property and equipment was $8,307, $8,953, and $9,622, respectively. For the years ended December 31, 2016, 2015, and 2014, the Company eliminated from assets and accumulated depreciation $16,652, $549 and $5,358 of fully depreciated assets, respectively.