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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2020
Property Plant And Equipment [Abstract]  
Schedule of Property, Plant and Equipment

Property, Plant and Equipment consist of the following at December 31:

 

(in thousands)

Range of useful lives

 

2020

 

 

2019

 

Land

 

 

$

7,333

 

 

$

7,875

 

Buildings and improvements

10-40 years

 

 

126,576

 

 

 

123,342

 

Machinery and equipment

2-25 years

 

 

377,782

 

 

 

360,570

 

Construction in progress

 

 

 

6,020

 

 

 

6,326

 

 

 

 

 

517,711

 

 

 

498,113

 

Less: accumulated depreciation

 

 

 

(229,167

)

 

 

(211,730

)

Total property, plant and equipment, net

 

 

$

288,544

 

 

$

286,383