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FAIR VALUE MEASUREMENTS (Details Narrative) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Cumulative Liability	$ 18.8	$ 18.4

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- Definition

Represents cumulative liability of note.

+ References

No definition available.

+ Details

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Namespace Prefix:	tgtx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration