The estimated useful lives to calculate depreciation of property and equipment and leasehold improvements consisted of the following:

Asset CategoryUseful Life
Equipment5 years
Finance leasesShorter of the lease term or the useful lives of the assets
Vehicles5 years
Leasehold improvementsShorter of the lease term or the useful lives of the assets
Furniture and fixtures5 years
Computers, internally developed software and related equipment3 years
Property and equipment, net consisted of the following at December 31, 2024 and 2023 (in thousands):
December 31, 2024December 31, 2023
Equipment$5,705 $7,629 
Finance lease assets
1,609 7,974 
Furniture and fixtures
173 173 
Company vehicles
2,817 2,102 
Leasehold improvements
1,401 1,401 
Computers, software and related equipment
3,128 3,091 
Construction in progress— 292 
Property and equipment, gross
14,833 22,662 
Accumulated depreciation
(8,722)(8,002)
Property and equipment, net
$6,111 $14,660 

About PP&E Disclosures

The PP&E disclosure details a company's physical asset base — land, buildings, machinery, and equipment — along with the depreciation methods and useful life assumptions that determine how these costs flow through the income statement. Capitalization policy thresholds reveal management's judgment on the boundary between expense and asset, directly affecting both reported earnings and asset values.

Key signals: changes in estimated useful lives or depreciation methods can materially shift reported earnings without any operational change. Compare capital expenditures against depreciation expense — when capex consistently trails depreciation, the asset base may be aging and underinvested. Watch for large asset impairments or write-downs that signal overvalued carrying amounts. Asset retirement obligations reveal future environmental or decommissioning costs that are often underappreciated. Compare PP&E intensity (PP&E-to-revenue) against industry peers to assess capital efficiency and competitive positioning.