Depreciation is generally provided over the following estimated useful service lives:
Land improvements
10 - 20 years
Buildings and improvements
10 - 45 years
Machinery and equipment
3 - 20 years
(amounts in thousands)December 31, 2025December 31, 2024
Land improvements$30,915 $30,614 
Buildings495,615 463,273 
Machinery and equipment1,469,174 1,380,424 
Total depreciable assets1,995,704 1,874,311 
Accumulated depreciation(1,374,390)(1,309,706)
621,314 564,605 
Land26,551 26,399 
Construction in progress80,580 90,435 
Total property and equipment, net$728,445 $681,439 
Depreciation expense was recorded as follows:
Year Ended December 31,
(amounts in thousands)202520242023
Cost of sales$79,288 $81,874 $89,396 
Selling, general, and administrative4,834 4,687 5,191 
Total depreciation expense$84,122 $86,561 $94,587 

Historical Timeline

Fiscal YearFiled
2025Feb 23, 2026Showing above
2024Feb 20, 2025
2023Feb 20, 2024
2022Feb 21, 2023
2021Feb 22, 2022
2020Feb 23, 2021
2019Feb 24, 2020
2018Mar 1, 2019
2017Mar 6, 2018

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.