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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2016
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, plant and equipment consist of the following:
 
 
December 31,
 
 
 
(in thousands)
 
2016
 
2015
 
Useful
Lives
Land
 
$
9,063

 
$
9,478

 
 
Buildings and improvements
 
75,610

 
73,828

 
5-20 yrs.
Machinery and equipment
 
71,028

 
70,791

 
3-10 yrs.
Office furniture and equipment
 
7,165

 
7,128

 
3-7 yrs.
Computer software
 
11,889

 
11,298

 
3-7 yrs.
Transportation equipment
 
5,286

 
5,521

 
3 yrs.
 
 
180,041

 
178,044

 
 
Accumulated depreciation
 
(113,412
)
 
(107,094
)
 
 
 
 
$
66,629

 
$
70,950