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Stock-based Compensation - Summary of Stock Option Activity (Details) - $ / shares
6 Months Ended 12 Months Ended
Oct. 31, 2024
Apr. 30, 2024
Service-based Stock Option    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]    
Beginning Balance, Number of options outstanding 18,659  
Granted, Number of options outstanding 3,500  
Ending Balance, Number of options outstanding 22,159 18,659
Non-vested, Number of options outstanding 13,523  
Vested, Number of options outstanding 8,636  
Weighted average exercise price    
Beginning Balance, Weighted average exercise price $ 121  
Granted, Weighted average exercise price 4.24  
Ending Balance, Weighted average exercise price 111 $ 121
Nonvested, Weighted average exercise price 35  
Vested, Weighted average exercise price $ 229  
Average remaining contractual life (in years)    
Outstanding, Average remaining contractual life (in years) 8 years 7 months 6 days 8 years 10 months 24 days
Granted, Average remaining contractual life (in years) 9 years 9 months 18 days  
Non-vested, Average remaining contractual life (in years) 9 years 2 months 12 days  
Vested, Average remaining contractual life (in years) 7 years 8 months 12 days  
Performance-based Stock Option    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]    
Beginning Balance, Number of options outstanding 5,456  
Ending Balance, Number of options outstanding 5,456 5,456
Non-vested, Number of options outstanding 3,565  
Vested, Number of options outstanding 1,891  
Weighted average exercise price    
Beginning Balance, Weighted average exercise price $ 502  
Ending Balance, Weighted average exercise price 502 $ 502
Nonvested, Weighted average exercise price 626  
Vested, Weighted average exercise price $ 268  
Average remaining contractual life (in years)    
Outstanding, Average remaining contractual life (in years) 5 years 4 months 24 days 5 years 10 months 24 days
Non-vested, Average remaining contractual life (in years) 5 years 2 months 12 days  
Vested, Average remaining contractual life (in years) 5 years 9 months 18 days