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Acquisition - Additional Information (Detail) - USD ($) | Jun. 11, 2018 | May 31, 2020 | Nov. 30, 2019
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Business Acquisition [Line Items] |  |  |
Common stock par value |  | $ 0.01 | $ 0.01
Goodwill |  | $ 1,941,411 | $ 1,941,411
Blood Bank Inc and Tianhe Stem Cell Biotechnologies Inc [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Aggregate consideration payable at closing under the Purchase Agreement | $ 14,000,000 |  |
Payment under asset purchase agreement | $ 10,500,000 |  |
Shares issued under asset purchase agreement | 465,426 |  |
Common stock par value | $ 0.01 |  |
Sale of stock price per share | $ 7.52 |  |
Percentage of earn out to be paid from gross revenues | 75.00% |  |
Common stock deliver | $ 200,000 |  |
Common stock value | 5,000,000 |  |
Amount of earn out to be paid from sale of public cord blood inventory | $ 500,000 |  |

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