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Inventory
6 Months Ended
Jun. 30, 2023
Inventory  
Inventory

9. Inventory

Inventory as of June 30, 2023 and December 31, 2022 consisted of the following:

June 30,

December 31,

2023

2022

Raw materials

$

6,027

$

5,600

Work in process

7,467

24,672

Finished goods

12,532

16,229

Total inventory

$

26,026

$

46,501

The aggregate charges related to excess and obsolete inventory for the three and six months ended June 30, 2023 was $155 and $1,061, respectively. These expenses were recorded as a component of cost of product revenues. The aggregate charges related to excess and obsolete inventory for the three and six months ended June 30, 2022 were immaterial.