| Segment Reporting - Additional Information (Detail) | 12 Months Ended | 
|---|---|
| Nov. 30, 2019  Segments | |
| Umbilical Cord Blood and Cord Tissue Stem Cell Service and PrepaCyte-CB [Member] | |
| Segment Reporting Information [Line Items] | |
| Number of reportable segments | 3 | 
| X | ||||||||||
| 
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. No definition available. 
 | 
| X | ||||||||||
| 
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
 | 
| X | ||||||||||
| 
- Details 
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