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Property, Plant and Equipment
3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment    
Property, Plant and Equipment

Note 4— Property, Plant and Equipment

The following table summarizes our property, plant and equipment, net:

    

March 31,

    

December 31,

2024

2023

Vehicles

$

354

$

354

Buildings and improvements

 

43

 

43

Computer equipment

 

25

 

25

Furniture and fixtures

 

3

 

3

Machinery and equipment

 

1,404

 

1,404

Internal-use software

 

3,698

 

3,126

Property, plant and equipment, gross

$

5,527

$

4,955

Less: accumulated depreciation

 

(2,144)

 

(1,871)

Property, plant and equipment, net

$

3,383

$

3,084

Depreciation expense was $273 and $180 for the three months ended March 31, 2024, and 2023, respectively.

Note 5 — Property, Plant and Equipment

The following table summarizes our property, plant and equipment:

December 31,

2023

2022

Vehicles

    

$

354

    

$

386

Buildings

 

43

 

43

Computer equipment

 

25

 

23

Furniture and fixtures

 

3

 

3

Machinery and equipment

 

1,404

 

1,140

Internal-use software

 

3,126

 

1,851

Property, plant and equipment, gross

$

4,955

$

3,446

Less: accumulated depreciation

 

(1,871)

 

(1,020)

Property, plant and equipment, net

$

3,084

$

2,426

Depreciation expenses were $872 and $561 for the years ended December 31, 2023, and 2022, respectively.