A summary of the estimated useful lives is as follows:
DescriptionUseful Life
Machinery and equipment
2 to 10 years
Computer and other equipment
2 to 7 years
Leasehold improvements
10 to 20 years
The following table summarizes property, plant, and equipment as of April 30, 2025 and 2024 (in thousands):
April 30, 2025April 30, 2024
Machinery and equipment$24,087 $20,852 
Computer and other equipment2,228 1,988 
Leasehold improvements1,753 762 
28,068 23,602 
Less: Accumulated depreciation and amortization(16,962)(13,599)
11,106 10,003 
Construction in progress125 1,035 
Total property, plant, and equipment, net$11,231 $11,038 

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.