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Description of Business - Additional Information (Detail)	Sep. 14, 2020
Anelixis Therapeutics, Inc. [Member]
Description Of Business [Line Items]
Date of acquisition	Sep. 14, 2020

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Description of business.

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- Definition

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
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