XML 66 R40.htm IDEA: XBRL DOCUMENT v3.24.1.1.u2
Summary of Significant Accounting Policies - Schedule of Property Plant and Equipment (Detail) - USD ($)
$ in Thousands
Apr. 30, 2024
Apr. 30, 2023
Property, Plant and Equipment [Line Items]    
Property plant and equipment gross $ 64,234 $ 61,368
Less accumulated depreciation (46,585) (44,966)
Net property, plant and equipment 17,649 16,402
Land    
Property, Plant and Equipment [Line Items]    
Property plant and equipment gross 41 41
Building and improvements    
Property, Plant and Equipment [Line Items]    
Property plant and equipment gross $ 17,280 17,147
Building and improvements | Minimum    
Property, Plant and Equipment [Line Items]    
Useful Life (in years) 5 years  
Building and improvements | Maximum    
Property, Plant and Equipment [Line Items]    
Useful Life (in years) 40 years  
Machinery and equipment    
Property, Plant and Equipment [Line Items]    
Property plant and equipment gross $ 46,913 $ 44,180
Machinery and equipment | Minimum    
Property, Plant and Equipment [Line Items]    
Useful Life (in years) 3 years  
Machinery and equipment | Maximum    
Property, Plant and Equipment [Line Items]    
Useful Life (in years) 10 years