Depreciation expense is computed primarily using the straight-line method over the estimated useful lives of the assets, which are as follows:
Asset Classification Estimated Useful Life
Buildings 30 years
Computer equipment 5 years
Furniture and fixtures 7 years
Leasehold improvements Shorter of asset's useful life or remaining life of lease
Machinery and equipment 
5 - 10 years
Vehicles 5 years
Property, plant, and equipment, net was comprised of the following (in thousands):
December 31,
2025
December 31,
2024
Land$19,690 $8,112 
Buildings234,599 224,655 
Leasehold improvements133,833 130,905 
Machinery and equipment473,076 459,026 
Furniture and fixtures16,170 15,003 
Vehicles2,018 2,034 
Computer equipment76,825 70,495 
Construction-in-progress92,909 78,198 
Total property, plant, and equipment1,049,120 988,428 
Less: Accumulated depreciation(606,170)(563,520)
Property, plant, and equipment, net$442,950 $424,908 

Historical Timeline

Fiscal YearFiled
2025Feb 27, 2026Showing above
2024Feb 28, 2025
2023Mar 14, 2024
2022Mar 3, 2023
2021Mar 1, 2022
2020Mar 1, 2021
2019Mar 2, 2020
2018Mar 1, 2019

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.