Accured milestone payments.

No definition available.

Name:	CELU_AccuredMilestonePayments
Namespace Prefix:	CELU_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Monthly milestone payments.

+ References

No definition available.

+ Details

Name:	CELU_MonthlyMilestonePayments
Namespace Prefix:	CELU_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Net sales percentage.

+ References

No definition available.

+ Details

Name:	CELU_NetSalesPercentage
Namespace Prefix:	CELU_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Prior payment to related party.

+ References

No definition available.

+ Details

Name:	CELU_PriorPaymentToRelatedParty
Namespace Prefix:	CELU_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Purchase price contingent consideration.

+ References

No definition available.

+ Details

Name:	CELU_PurchasePriceContingentConsideration
Namespace Prefix:	CELU_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Upfront payment.

+ References

No definition available.

+ Details

Name:	CELU_UpfrontPayment
Namespace Prefix:	CELU_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of liability recognized from contingent consideration in asset acquisition.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 50
-Name Accounting Standards Codification
-Section 15
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480123/805-50-15-3

+ Details

Name:	us-gaap_AssetAcquisitionContingentConsiderationLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-4

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 805
-SubTopic 50
-Name Accounting Standards Codification
-Section 15
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480123/805-50-15-3

+ Details

Name:	us-gaap_AssetAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Purchase price of expected asset acquisition prior to consideration being transferred. Excludes business acquisition.

+ References

+ Details

Name:	us-gaap_AssetAcquisitionPriceOfAcquisitionExpected
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The increase (decrease) during the reporting period in other expenses incurred but not yet paid.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

+ Details

Name:	us-gaap_IncreaseDecreaseInOtherAccruedLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_AssetAcquisitionAxis=CELU_SequenceLifeScienceIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Asset Acquisition (Details Narrative) - USD ($) $ in Thousands		6 Months Ended
	Oct. 09, 2024	Jun. 30, 2025	Dec. 31, 2024
Asset Acquisition [Line Items]
Acquisition related contingent consideration		$ 1,413	$ 1,413
Purchase price contingent consideration	$ 4,000
Sequence LifeScience Inc [Member]
Asset Acquisition [Line Items]
Consideration for assets	5,500
Upfront payment	1,000
Monthly milestone payments	4,000
Prior payment to related party	$ 500
Net sales percentage	20.00%
Accrued milestone payments		2,157
Net sales milestone payments		2,022
Acquisition related contingent consideration		$ 650