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Inventories (Tables)
6 Months Ended
Jun. 30, 2021
Inventory Disclosure [Abstract]  
Schedule Of Inventory Costs

Inventory costs are summarized as follows:

 

 

 

June 30,

 

 

December 31,

 

(in thousands)

 

2021

 

 

2020

 

Raw materials

 

$

399,067

 

 

$

312,856

 

Work in process

 

 

11,790

 

 

 

8,687

 

Finished goods

 

 

4,465

 

 

 

5,834

 

 

$

415,322

 

 

$

327,377