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Inventories
3 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
Inventories

5. Inventories. Inventories at March 31, 2021 and December 31, 2020 consisted of the following (in thousands):

    

March 31, 2021

    

December 31, 2020

Finished goods

$

120,969

$

110,933

Work-in-process

 

24,750

 

19,308

Raw materials

 

54,589

 

67,778

Total inventories

$

200,308

$

198,019