The carrying value and estimated useful lives of property, plant and equipment are as follows:
December 31,
(In thousands)Estimated Useful Life20252024
Property, plant and equipment
Landn/a$4,716 $4,716 
Leasehold and building improvements(1)257,503 227,885 
Land improvements15 years6,740 6,747 
Buildings
30 - 40 years
290,777 290,777 
Computer equipment and computer software3 years243,624 206,460 
Machinery and equipment
3 - 10 years
387,943 339,421 
Furniture and fixtures
3 - 10 years
37,347 37,176 
Assets under constructionn/a84,142 89,065 
Property, plant and equipment, at cost1,312,792 1,202,247 
Accumulated depreciation(604,128)(508,574)
Property, plant and equipment, net$708,664 $693,673 
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(1)     Lesser of remaining lease term, building life, or estimated useful life.

Historical Timeline

Fiscal YearFiled
2025Feb 13, 2026Showing above
2024Feb 19, 2025
2023Feb 21, 2024
2022Feb 21, 2023
2021Feb 22, 2022
2020Feb 16, 2021

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.