| Document And Entity Information | May 01, 2023 |
| Document And Entity Information [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 01, 2023 |
| Entity File Number | 001-32639 |
| Entity Registrant Name | TG Therapeutics, Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 36-3898269 |
| Entity Address, Address Line One | 3020 Carrington Mill Blvd |
| Entity Address, Address Line Two | Suite 475 |
| Entity Address, City or Town | Morrisville |
| Entity Address, State or Province | NC |
| Entity Address, Postal Zip Code | 27560 |
| City Area Code | 212 |
| Local Phone Number | 554-4484 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Security Exchange Name | NASDAQ |
| Entity Central Index Key | 0001001316 |
| Entity Emerging Growth Company | false |
| Trading Symbol | TGTX |
