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Property, Plant and Equipment
 9 Months Ended
Sep. 30, 2023
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment

Note 6. Property, Plant and Equipment

Property, plant and equipment consisted of the following (in thousands):

 

 

 

September 30,

 

 

December 31,

 

 

 

2023

 

 

2022

 

Computer equipment

 

$

2,443

 

 

$

2,363

 

Lab equipment

 

 

6,388

 

 

 

5,055

 

Leasehold improvements

 

 

3,030

 

 

 

2,961

 

Construction in progress

 

 

1,083

 

 

 

1,488

 

Testing equipment

 

 

1,268

 

 

 

692

 

Manufacturing equipment

 

 

4,025

 

 

 

1,831

 

Furniture, fixtures and other equipment

 

 

567

 

 

 

535

 

Total property, plant and equipment

 

$

18,804

 

 

$

14,925

 

Less: accumulated depreciation

 

 

(7,605

)

 

 

(5,205

)

Total property, plant and equipment, net

 

$

11,199

 

 

$

9,720

 

 

Depreciation related to property, plant, and equipment was $0.8 million and $0.6 million for the three months ended September 30, 2023 and September 30, 2022, respectively, and $2.5 million and $1.6 million for the nine months ended September 30, 2023, and September 30, 2022, respectively.