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Related Party Transactions - Additional Information (Details) - shares	1 Months Ended
	Jan. 31, 2025	Feb. 29, 2024	Jan. 27, 2025	Nov. 19, 2024
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items]
Class of warrant or right, number				39,473,688
Broadwood Partners, L.P [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items]
Sale of stock	7,894,737	6,730,770
Class of warrant or right, number	7,894,737		7,894,737
Don M. Bailey [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items]
Sale of stock		96,155

X

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

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.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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X

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=lctx_BroadwoodPartnersLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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