Property, plant and equipment in service and under construction, and related accumulated depreciation and amortization, as of December 31, 2025 and 2024, were as follows:
December 31,Useful Lives (Years)20252024
(Dollars in thousands)   
Land N/A $44,257 $41,737 
Leasehold and land improvements
 1-30
321,542 317,038 
Communications infrastructure assets
 7-30
696,918 667,401 
Other operating assets and equipment
 5-8
2,866 2,768 
System development
 3-5
3,032 2,743 
Work in process N/A 10,391 5,958 
Total property, plant and equipment, gross 1,079,006 1,037,645 
Accumulated depreciation and amortization (690,007)(653,624)
Total property, plant and equipment, net $388,999 $384,021 

Historical Timeline

Fiscal YearFiled
2025Feb 20, 2026Showing above
2024Feb 21, 2025
2023Feb 16, 2024

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.