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Property, Plant and Equipment (Tables)
9 Months Ended
Sep. 30, 2018
Property, Plant and Equipment [Abstract]  
Components of Property, Plant and Equipment
The following table sets forth the components of property, plant and equipment:
(In thousands)
September 30, 2018
 
December 31, 2017
Land
$
3,218

 
$
3,312

Buildings
117,877

 
119,970

Machinery and equipment
384,146

 
379,747

Construction in progress
14,878

 
12,036

Total
520,119

 
515,065

Less: accumulated depreciation
(369,550
)
 
(358,051
)
Net property, plant and equipment
$
150,569

 
$
157,014