Estimated useful lives for property and equipment are as follows:
Property and EquipmentEstimated Useful Life
Machinery and equipment
5 years
Furniture and fixtures
7 years
Computer hardware and computer software
3 years
Leasehold improvementsLesser of estimated useful life or remaining lease term
Property and equipment, net consist of the following:
As of December 31,
20252024
(in thousands)
Machinery and equipment
$144,069 $124,567 
Leasehold improvements
107,696 103,569 
Computer hardware
41,329 36,497 
Construction in progress
41,252 28,136 
Furniture and fixtures
8,464 7,874 
Computer software
2,006 1,695 
Property and equipment, gross
344,816 302,338 
Less: accumulated depreciation
(198,901)(165,525)
Property and equipment, net
$145,915 $136,813 

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.