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Inventories
6 Months Ended
Jun. 30, 2021
Inventory Disclosure [Abstract]  
Inventories

5. Inventories. Inventories at June 30, 2021 and December 31, 2020 consisted of the following (in thousands):

    

June 30, 2021

    

December 31, 2020

Finished goods

$

104,112

$

110,933

Work-in-process

 

30,675

 

19,308

Raw materials

 

59,737

 

67,778

Total inventories

$

194,524

$

198,019