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Organization and Significant Accounting Policies - Revenue percentage by recognition method (Details)
12 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Apr. 30, 2023
Organization and Significant Accounting Policies      
Over time (as a percentage) 100.00% 100.00% 100.00%
Point in time (as a percentage) 57.00% 43.00% 51.00%
Total revenue (as a percentage) 43.00% 57.00% 49.00%