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Related Party Transactions - Additional Information (Detail) - USD ($) |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Feb. 19, 2021 | Feb. 04, 2021 | Dec. 18, 2018 | Dec. 31, 2022 | Dec. 31, 2021
Vineti Inc [Member] | Collaborative Arrangement [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Related Party Transaction Expenses From Transactions With Related Party Advisory Fees |  |  |  | $ 0 | $ 400,000
Eden Biocell [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Payments to Fund Long-term Loans to Related Parties |  |  | $ 10,000,000.0 |  |
Additional Loans Committed |  |  | $ 25,000,000.0 |  |
Watermill And Robert W Postma [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Pocket Expenses |  | $ 400,000 |  |  |
Related party transaction, reimbursed amount | $ 400,000 |  |  |  |

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- Definition Additional loans committed. + References No definition available. + Details
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Namespace Prefix: | tcrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Pocket expenses. + References No definition available. + Details
Name: | tcrt_PocketExpenses
Namespace Prefix: | tcrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Related party transaction expenses from transactions with related party advisory fees. + References No definition available. + Details
Name: | tcrt_RelatedPartyTransactionExpensesFromTransactionsWithRelatedPartyAdvisoryFees
Namespace Prefix: | tcrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Related Party Transaction Reimbursed Amount. + References No definition available. + Details
Name: | tcrt_RelatedPartyTransactionReimbursedAmount
Namespace Prefix: | tcrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The cash outflow associated with extending a long-term loan to a related party. Alternate caption: Payments for Advances to Affiliates. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |