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Inventories (Tables)
12 Months Ended
Dec. 31, 2020
Inventory Disclosure [Abstract]  
Schedule Of Inventory Costs

Inventory costs are summarized as follows:

 

 

 

December 31,

 

(in thousands)

 

2020

 

 

2019

 

Raw materials

 

$

312,856

 

 

$

304,069

 

Work in process

 

 

8,687

 

 

 

8,282

 

Finished goods

 

 

5,834

 

 

 

2,605

 

 

 

$

327,377

 

 

$

314,956