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Note 2 - Revenue (Details Textual) - Product [Member] - USD ($) $ in Millions | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Gross Net Accruals | $ 13.4 | $ 28.1
Briumvi Ublituximab [Member] |  |
Gross Net Accruals | $ 41.5 |

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- Definition Gross net accruals. + References No definition available. + Details
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Namespace Prefix: | tgtx_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | srt_ProductOrServiceAxis=us-gaap_ProductMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=tgtx_BriumviUblituximabMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |