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Revenue from Contracts with Customers (Tables) | 3 Months Ended
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Jul. 31, 2021
Revenue from Contract with Customer [Abstract] |
Summary of disaggregation of revenue | The following tables represents disaggregated revenue for the three months ended July 31, 2021 and 2020:
| Three Months Ended July 31, |  |
| 2021 |  | 2020 |  |  |  |
Pharmacology services | $ | 10,703 |  |  | $ | 9,412 |  |  |  |  |
Other TOS revenue | 526 |  |  | 21 |  |  |  |  |
Personalized oncology services | 24 |  |  | 113 |  |  |  |  |
Total oncology services revenue | $ | 11,253 |  |  | $ | 9,547 |  |  |  |  |

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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 http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 + Details
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