v3.26.1
Segment Information - Summary of Non-current Assets by Geographical Region (Details) - USD ($)
$ in Thousands
Apr. 30, 2026
Apr. 30, 2025
Segment Reporting [Line Items]    
Non-current assets $ 44,021 $ 43,525
Canada    
Segment Reporting [Line Items]    
Non-current assets 25,188 24,605
Namibia    
Segment Reporting [Line Items]    
Non-current assets 1,906 1,998
Spain    
Segment Reporting [Line Items]    
Non-current assets 499 494
USA    
Segment Reporting [Line Items]    
Non-current assets $ 16,428 $ 16,428