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v3.23.1

Fair Value Measurements - Additional Information (Details) $ in Thousands | Mar. 31, 2023 USD ($)
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Fair Value Disclosures [Abstract] |
Fair value assets transfer from Level 1 to Level 2 | $ 0
Fair value assets transfer from Level 2 to Level 1 | 0
Fair value liabilities transfer from Level 1 to Level 2 | 0
Fair value liabilities transfer from Level 2 to Level 1 | $ 0

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- Definition Fair value asset level1 to level2 transfer amount. + References No definition available. + Details
Name: | tngx_FairValueAssetLevel1ToLevel2TransferAmount
Namespace Prefix: | tngx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value asset level2 to level1 transfer amount. + References No definition available. + Details
Name: | tngx_FairValueAssetLevel2ToLevel1TransferAmount
Namespace Prefix: | tngx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value liabilities level1 to level2 transfer amounts. + References No definition available. + Details
Name: | tngx_FairValueLiabilitiesLevel1ToLevel2TransferAmounts
Namespace Prefix: | tngx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value liabilities level2 to level1 transfer amounts. + References No definition available. + Details
Name: | tngx_FairValueLiabilitiesLevel2ToLevel1TransferAmounts
Namespace Prefix: | tngx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_FairValueDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration