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Organization and Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020 USD ($)
Significant Accounting Policies [Line Items]
Year founded	2010
Impairment of long-lived assets	$ 0
Assumed dividend yield	0.00%
Cellectis [Member]
Significant Accounting Policies [Line Items]
Percentage of ownership in outstanding common stock	64.70%

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Assumed Dividend Yield

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Significant accounting policies.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
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The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Year the entity was founded, in CCYY format.

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