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v3.24.1.1.u2

Property, Plant and Equipment (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022
Property, Plant and Equipment |  |  |  |
Property, plant and equipment, gross | $ 5,527 |  | $ 4,955 | $ 3,446
Less: accumulated depreciation | (2,144) |  | (1,871) | (1,020)
Property, plant and equipment, net | 3,383 |  | 3,084 | 2,426
Depreciation | 273 | $ 180 | 872 | 561
Vehicles |  |  |  |
Property, Plant and Equipment |  |  |  |
Property, plant and equipment, gross | 354 |  | 354 | 386
Buildings |  |  |  |
Property, Plant and Equipment |  |  |  |
Property, plant and equipment, gross |  |  | 43 | 43
Buildings and improvements |  |  |  |
Property, Plant and Equipment |  |  |  |
Property, plant and equipment, gross | 43 |  | 43 |
Computer equipment |  |  |  |
Property, Plant and Equipment |  |  |  |
Property, plant and equipment, gross | 25 |  | 25 | 23
Furniture and fixtures |  |  |  |
Property, Plant and Equipment |  |  |  |
Property, plant and equipment, gross | 3 |  | 3 | 3
Machinery and equipment |  |  |  |
Property, Plant and Equipment |  |  |  |
Property, plant and equipment, gross | 1,404 |  | 1,404 | 1,140
Internal-use software |  |  |  |
Property, Plant and Equipment |  |  |  |
Property, plant and equipment, gross | $ 3,698 |  | $ 3,126 | $ 1,851

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