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Revenue from Contracts with Customers (Tables)
 12 Months Ended
Apr. 30, 2024
Revenue from Contract with Customer [Abstract]  
Summary of Disaggregation of Revenue The following table represents disaggregated revenue for the twelve months ended April 30, 2024 and 2023:
Year Ended April 30,
 20242023
Pharmacology services$47,035 $50,708 
Other TOS revenue3,102 3,046 
Personalized oncology services18 116 
Total oncology services revenue$50,155 $53,870 
Other TOS revenue represents additional services provided to the Company's pharmaceutical and biotechnology customers, specifically flow cytometry services and SaaS provided via our Lumin Bioinformatics software.