Property, plant and equipment are carried at cost less accumulated depreciation and are depreciated using the straight-line method over the following estimated useful lives:
LandNot amortized
Buildings30 years
Leasehold improvementsShorter of lease term or estimated useful life
Furniture and fixtures3 years
Manufacturing equipment(1)
5 to 10 years
Research and development equipment(1)
5 to 10 years
Software and computer equipment3 years
Vehicles5 years
____________
(1) Beginning in the first quarter of 2023, the Company reassessed the estimated useful lives for certain of its large equipment with value over $25,000 from a range of 5 to 10 years to a uniform 10 years. Equipment up to $25,000 in value continue to be estimated to have a useful life of 5 years.
A summary of property, plant, and equipment, net as of December 31, 2025 and 2024, is as follows:
December 31,
(in thousands)20252024
Manufacturing equipment$107,898 $165,626 
Research and development equipment19,577 20,816 
Leasehold improvements16,885 18,165 
Building29,562 27,155 
Finance leases125,216 5,167 
Software2,688 2,742 
Furniture and fixtures900 941 
Vehicles595 594 
Land5,548 5,416 
Assets not yet placed in service6,371 38,747 
Total property, plant and equipment$315,240 $285,369 
Less: accumulated depreciation and amortization101,978 100,482 
Property, plant and equipment, net$213,262 $184,887 

Historical Timeline

Fiscal YearFiled
2025Apr 9, 2026Showing above
2024Mar 5, 2025
2023Mar 1, 2024
2022Mar 1, 2023
2021Mar 2, 2022
2020Mar 1, 2021
2019Mar 19, 2020

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.