Gain (loss) on modification of lease.

No definition available.

Name:	tcrt_GainLossOnModificationOfLease
Namespace Prefix:	tcrt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Lease termination date.

+ References

No definition available.

+ Details

Name:	tcrt_LeaseTerminationDate
Namespace Prefix:	tcrt_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Operating lease area.

+ References

No definition available.

+ Details

Name:	tcrt_OperatingLeaseArea
Namespace Prefix:	tcrt_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Sublease term commenced end date amendment.

+ References

No definition available.

+ Details

Name:	tcrt_SubleaseTermCommencedEndDateAmendment
Namespace Prefix:	tcrt_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Termination costs

+ References

No definition available.

+ Details

Name:	tcrt_TerminationCosts
Namespace Prefix:	tcrt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of gain (loss) on termination of lease before expiration of lease term.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479092/842-20-40-1

+ Details

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

- Definition

Description of terms and conditions of option to extend lessee's operating lease. Includes, but is not limited to, information about option recognized as part of right-of-use asset and lease liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

+ Details

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

- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-5

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (g)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-4

+ Details

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

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-1

+ Details

Name:	us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	srt_StatementGeographicalAxis=tcrt_MaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementGeographicalAxis=tcrt_HoustonTexasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RestatementAxis=srt_ScenarioPreviouslyReportedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Leases - Additional Information (Details) $ in Thousands			3 Months Ended		9 Months Ended
Leases - Additional Information (Details) $ in Thousands	Nov. 15, 2023 USD ($)	Apr. 19, 2023	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Nov. 01, 2023 ft²	Aug. 31, 2023 USD ($) ft²	Dec. 31, 2022 USD ($)	Apr. 30, 2022 USD ($) ft²
Lease termination date					Apr. 19, 2023
Sublease term amendment		Jul. 31, 2026
Termination costs					$ 200
Gain on lease termination					245	$ 133
Operating Lease Area \| ft²							14,037
Right of use assets					$ 1,039				$ 2,136
Gain (Loss) On Modification Of Lease				$ 100
Lease term, description		a term expiring on June 30, 2025 with an option to extend through July 31, 2026
Final payment	$ 100
Boston, MA
Gain on lease termination			$ 200
Houston, TX
Operating Lease Area \| ft²								3,228		3,228
Right of use assets								$ 19		$ 400
Houston, TX \| Previously Reported
Operating Lease Area \| ft²										18,111