Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions (Narrative) (Details)

v3.21.2
Related Party Transactions (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Nov. 12, 2021
Dec. 31, 2020
Related Party Transaction [Line Items]            
Revenue from TGTX $ 29,000 $ 28,000 $ 252,000 $ 1,042,000    
Journey [Member]            
Related Party Transaction [Line Items]            
Contribution via promissory note           $ 5,200,000
Promissory Note [Member] | Journey [Member]            
Related Party Transaction [Line Items]            
Increase in promissory note, related party     $ 9,500,000      
Chief Executive Officer (Dr. Rosenwald) [Member]            
Related Party Transaction [Line Items]            
Interest own in percent by principal stockholder or director 10.60%   10.60%      
Executive Vice Chairman [Member]            
Related Party Transaction [Line Items]            
Interest own in percent by principal stockholder or director 11.40%   11.40%      
TGTX [Member]            
Related Party Transaction [Line Items]            
Related party transaction, receivables $ 69,000   $ 69,000      
Shared Services Agreement [Member] | TGTX [Member]            
Related Party Transaction [Line Items]            
Revenue from TGTX 100,000 100,000 300,000 300,000    
Desk Share Agreements [Member] | TGTX and OPPM [Member] | New York, NY Office Space [Member]            
Related Party Transaction [Line Items]            
Related party transaction, receivables 0   0      
Total payment for rent 700,000 700,000        
Desk Share Agreements [Member] | OPPM [Member] | New York, NY Office Space [Member]            
Related Party Transaction [Line Items]            
Related party transaction, receivables 0 0 0 0    
Desk Share Agreements [Member] | TGTX [Member] | New York, NY Office Space [Member]            
Related Party Transaction [Line Items]            
Related party transaction, receivables 400,000 400,000 400,000 400,000    
Desk Share Agreements [Member] | TGTX [Member] | Waltham office space [Member]            
Related Party Transaction [Line Items]            
Related party transaction, receivables 21,000 29,000 21,000 $ 29,000    
Total payment for rent 100,000 $ 100,000        
Employee Retention Agreement [Member] | Avenue [Member]            
Related Party Transaction [Line Items]            
Amount reimbursable to Avenue 100,000   100,000      
Amount payable to Avenue key employees $ 2,900,000   $ 2,900,000      
Subsequent Events [Member] | Shared Services Agreement [Member] | Journey [Member]            
Related Party Transaction [Line Items]            
Related party transaction, receivables         $ 400,000