Document And Entity Information
3 Months Ended
Mar. 31, 2013
May 07, 2013
Document and Entity Information [Abstract]    
Entity Registrant Name TG THERAPEUTICS, INC.  
Entity Central Index Key 0001001316  
Current Fiscal Year End Date --12-31  
Entity Filer Category Smaller Reporting Company  
Trading Symbol tgtx  
Entity Common Stock, Shares Outstanding   26,322,671
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2013  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2013