Consolidated Statements of Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Consolidated Statements of Changes in Stockholders' (Deficit) Equity
Offering costs	$ (204)	$ 29,900	$ 200
Offering costs, at market	$ 100	$ 4,000	$ 2,000

Specific incremental costs directly attributable to a At-the-Market offering of securities which are deferred at the end of the reporting period.

No definition available.

Name:	tgtx_OfferingCostsAtMarket
Namespace Prefix:	tgtx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant