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Property, Plant and Equipment (Tables)
3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment    
Summary of Company's property, plant and equipment

    

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

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