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Revenue from Contracts with Customers (Tables) | 9 Months Ended
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Jan. 31, 2023
Revenue from Contract with Customer [Abstract] |
Summary of disaggregation of revenue | The following tables represents disaggregated revenue for the three and nine months ended January 31, 2023 and 2022:
| Three Months Ended January 31, |  | Nine Months Ended January 31,
| 2023 |  | 2022 |  | 2023 |  | 2022
Pharmacology services | $ | 12,119 |  |  | $ | 12,622 |  |  | $ | 38,355 |  |  | $ | 34,468 |
Other TOS revenue | 648 |  |  | 546 |  |  | 2,328 |  |  | 1,715 |
Personalized oncology services | 6 |  |  | 25 |  |  | 116 |  |  | 49 |
Total oncology services revenue | $ | 12,773 |  |  | $ | 13,193 |  |  | $ | 40,799 |  |  | $ | 36,232 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045 + Details
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