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Property, Plant, and Equipment
 12 Months Ended
Dec. 31, 2016
Property, Plant and Equipment [Abstract]  
Property, Plant, and Equipment
PROPERTY, PLANT, AND EQUIPMENT
Components of property, plant, and equipment at December 31 consisted of the following (in thousands):
 
2016
 
2015
Land and land improvements
$
7,102

 
$
6,520

Building and improvements
50,283

 
47,775

Machinery and equipment
212,774

 
234,336

Construction in progress
2,202

 
4,112

Property, plant, and equipment, gross
272,361

 
292,743

Less: accumulated depreciation
(164,057
)
 
(173,811
)
Property, plant, and equipment, net
$
108,304

 
$
118,932