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 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Related Party Transaction [Line Items]        
Revenue from TGTX $ 155,000 $ 42,000 $ 223,000 $ 1,014,000
Debt instrument, stated interest rate 11.00%   11.00%  
Interest paid $ 2,760,000 3,059,000 $ 4,949,000 6,184,000
2018 Venture Notes [Member]        
Related Party Transaction [Line Items]        
Interest paid 0 619,000 0 1,228,000
2017 Subordinated Note Financing [Member]        
Related Party Transaction [Line Items]        
Interest paid $ 0 1,296,000 $ 0 2,692,000
Chief Executive Officer (Dr. Rosenwald) [Member]        
Related Party Transaction [Line Items]        
Interest own in percent by principal stockholder or director 10.70%   10.70%  
Executive Vice Chairman [Member]        
Related Party Transaction [Line Items]        
Interest own in percent by principal stockholder or director 11.60%   11.60%  
TGTX [Member]        
Related Party Transaction [Line Items]        
Related party transaction, receivables $ 34,000   $ 34,000  
Shared Services Agreement [Member] | TGTX [Member]        
Related Party Transaction [Line Items]        
Revenue from TGTX 100,000 100,000 200,000 200,000
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 28,000 29,000 28,000 $ 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 25,000   25,000  
Amount payable to Avenue key employees $ 2,900,000   $ 2,900,000