Depreciation is computed on a straight-line basis over the following useful lives:
(in years)
Estimated Useful Life
Software
3
Equipment and fixtures
3 - 7
Leasehold improvements
5 - 15 1
Buildings
10 - 39
_________________
1    Lesser of lease term or useful life
Property and equipment, net consisted of the following:
(dollars in thousands)
Useful Life (Years)
December 31, 2025December 31, 2024
Software3$14,630 $10,666 
Equipment and fixtures37305,116 229,307 
Leasehold improvements51568,023 54,535 
Buildings1039616,299 487,060 
LandN/A7,022 7,022 
Construction-in-progress 1
 N/A
75,225 71,951 
Property and equipment, gross1,086,315 860,541 
Less: accumulated depreciation(261,813)(176,570)
Property and equipment, net$824,502 $683,971 
_______________
1    Construction-in-progress primarily consisted of construction and equipment costs for new and existing shops.
Depreciation expense included in our consolidated statements of operations was as follows:
Year Ended December 31,
(in thousands)202520242023
Cost of sales$82,850 $63,707 $42,807 
Selling, general, and administrative
3,339 1,229 1,634 
Total depreciation expense$86,189 $64,936 $44,441 

Historical Timeline

Fiscal YearFiled
2025Feb 13, 2026Showing above
2024Feb 13, 2025
2023Feb 23, 2024
2022Feb 27, 2023
2021Mar 11, 2022

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.