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Property, Plant and Equipment, Net
 12 Months Ended
Dec. 31, 2025
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment, Net Property, Plant and Equipment, Net
The following table provides information about property, plant and equipment, net balances:
December 31,
Useful lives20252024
Equipment5-10 years$79,272 $52,378 
Furniture5-10 years3,149 2,369 
Leasehold improvementsLesser of useful life/remaining lease14,146 9,674 
Tooling2-3 years16,192 9,955 
Construction in progress
36,644 — 
     Total149,403 74,376 
Less: Accumulated depreciation(34,988)(28,716)
     Total property, plant and equipment, net$114,415 $45,660 
Depreciation expense related to property, plant and equipment was $14,009 and $7,809 during the years ended December 31, 2025 and 2024, respectively.
For the years ended December 31, 2025 and 2024 the Company recorded a loss from write-down of property, plant and equipment of $1,781 and $9,133, respectively. The 2025 and 2024 write-downs were mainly due to design changes from the Z3-Phase 1 to Z3-Phase 2 production in which the Phase 1 production assets could not be utilized or repurposed for Phase 2 production. Additionally, the loss from write-down of property, plant and equipment contains costs for disposal of miscellaneous equipment and tooling that cannot be repurposed.
For the years ended December 31, 2025 and 2024, interest costs capitalized during the period was $904 and $1,841, respectively.