v3.26.1
Restricted Cash - Reconciliation of Cash and Cash Equivalents And Restricted Cash (Details) - USD ($)
$ in Thousands
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2024
Reconciliation Of Cash And Cash Equivalents And Restricted Cash Abstract      
Cash and cash equivalents $ 1,603 $ 4,720  
Restricted cash 1,331 1,365  
Total cash and cash equivalents and restricted cash $ 2,934 $ 6,085 $ 19,265