Annual report pursuant to Section 13 and 15(d)

Related Party Transactions (Narrative) (Details)

v3.21.1
Related Party Transactions (Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 14, 2019
Jul. 18, 2019
Mar. 12, 2018
Mar. 31, 2017
Mar. 17, 2017
Sep. 14, 2016
Oct. 03, 2014
Aug. 31, 2020
May 31, 2016
Sep. 30, 2014
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Jun. 12, 2020
Oct. 30, 2015
Related Party Transaction [Line Items]                                  
Operating lease term               15 years                  
Revenue from TGTX                       $ 1,068,000 $ 1,708,000        
Interest paid                       15,326,000 11,849,000        
Total notes payable                       $ 51,677,000 84,656,000        
Checkpoint [Member]                                  
Related Party Transaction [Line Items]                                  
PIK dividend as a percentage of fully diluted outstanding capitalization                       0.00%          
Avenue [Member]                                  
Related Party Transaction [Line Items]                                  
Remaining funding commitment                               $ 800,000  
PIK dividend as a percentage of fully diluted outstanding capitalization                       0.00%          
Caelum [Member]                                  
Related Party Transaction [Line Items]                                  
PIK dividend as a percentage of fully diluted outstanding capitalization                       0.00%          
2018 Venture Notes [Member]                                  
Related Party Transaction [Line Items]                                  
Repayments of debt                       $ 21,707,000 0        
Interest paid                       2,253,000 2,376,000        
Interest Rate                           8.00%      
Proceeds from Notes                         2,000,000.0        
2017 Subordinated Note Financing [Member]                                  
Related Party Transaction [Line Items]                                  
Repayments of debt $ 28,400,000                     28,356,000 0        
Interest paid                       4,760,000 5,601,000        
Total notes payable                       0 28,400,000        
Interest Rate         8.00%                        
Maximum borrowing capacity         $ 40,000,000.0                        
Opus Credit Facility (2019 Notes) [Member]                                  
Related Party Transaction [Line Items]                                  
Credit facility expiration date   Sep. 14, 2021   Sep. 14, 2019     Sep. 14, 2018                    
Repayments of debt                 $ 21,700,000     9,000,000.0          
Interest paid                       710,000 1,449,000        
Credit facility, amount outstanding                       $ 0 9,000,000.0        
Total notes payable                         9,000,000.0        
Interest Rate             12.00%         12.00%          
Class of Warrant or Right, Exercise Price of Warrants or Rights             $ 3.00                    
Maximum borrowing capacity             $ 25,000,000.0                    
Promissory Note [Member] | 2018 Venture Notes [Member]                                  
Related Party Transaction [Line Items]                                  
Proceeds from Notes                           $ 21,700,000      
Maximum borrowing capacity                           $ 21,700,000      
Waltham office space [Member]                                  
Related Party Transaction [Line Items]                                  
Operating lease term                       2 years         5 years
Total payment for rent                       $ 300,000 200,000        
DAK Capital Inc. [Member] | Opus Credit Facility (2019 Notes) [Member]                                  
Related Party Transaction [Line Items]                                  
Total notes payable                         $ 3,800,000        
Chief Executive Officer (Dr. Rosenwald) [Member]                                  
Related Party Transaction [Line Items]                                  
Interest own in percent by principal stockholder or director                       9.90% 11.60%        
Chief Executive Officer (Dr. Rosenwald) [Member] | Opus Credit Facility (2019 Notes) [Member]                                  
Related Party Transaction [Line Items]                                  
Repayments of debt     $ 500,000                            
Common shares issued (in shares)     396,825                            
Share price per share     $ 1.26                            
Total notes payable                         $ 300,000        
Executives Vice Chairman [Member]                                  
Related Party Transaction [Line Items]                                  
Interest own in percent by principal stockholder or director                       10.80% 12.70%        
Executives Vice Chairman [Member] | Opus Credit Facility (2019 Notes) [Member]                                  
Related Party Transaction [Line Items]                                  
Total notes payable                         $ 2,000,000.0        
Chief Executive Officer And Executive Vice President [Member] | Opus Credit Facility (2019 Notes) [Member]                                  
Related Party Transaction [Line Items]                                  
Interest paid                       $ 500,000          
Total notes payable                         2,900,000        
OPPM [Member] | New York, NY Office Space [Member]                                  
Related Party Transaction [Line Items]                                  
Percentage of Rentable Area               10.00%                  
TGTX [Member] | New York, NY Office Space [Member]                                  
Related Party Transaction [Line Items]                                  
Percentage of Rentable Area               45.00%                  
TGTX [Member] | Waltham office space [Member]                                  
Related Party Transaction [Line Items]                                  
Related party transaction, receivables                       100,000 100,000        
Shared Services Agreement [Member] | TGTX and OPPM [Member]                                  
Related Party Transaction [Line Items]                                  
Related party transaction, receivables                         1,400,000        
Shared Services Agreement [Member] | TGTX [Member]                                  
Related Party Transaction [Line Items]                                  
Related party transaction, receivables                       600,000 500,000        
Proceeds from Related Party Agreement                       500,000 500,000        
Desk Share Agreements [Member]                                  
Related Party Transaction [Line Items]                                  
Total payment for rent                       2,900,000 2,800,000        
Desk Share Agreements [Member] | New York, NY Office Space [Member]                                  
Related Party Transaction [Line Items]                                  
Total payment for rent                       2,600,000 2,600,000        
Desk Share Agreements [Member] | TGTX and OPPM [Member] | New York, NY Office Space [Member]                                  
Related Party Transaction [Line Items]                                  
Operating lease term                     5 years            
Related party transaction, receivables                       400,000          
Desk Share Agreements [Member] | OPPM [Member]                                  
Related Party Transaction [Line Items]                                  
Related party transaction, receivables                       $ 0          
Desk Share Agreements [Member] | OPPM [Member] | New York, NY Office Space [Member]                                  
Related Party Transaction [Line Items]                                  
Related party transaction, receivables                         200,000        
Percentage of Rentable Area                   10.00% 20.00% 0.00%          
Desk Share Agreements [Member] | TGTX [Member]                                  
Related Party Transaction [Line Items]                                  
Related party transaction, receivables                       $ 1,700,000          
Percentage of Rentable Area                       65.00%          
Desk Share Agreements [Member] | TGTX [Member] | New York, NY Office Space [Member]                                  
Related Party Transaction [Line Items]                                  
Related party transaction, receivables                       $ 1,600,000 $ 1,300,000        
Percentage of Rentable Area                   45.00% 40.00%            
Founders Agreement [Member]                                  
Related Party Transaction [Line Items]                                  
Agreement with partner companies, term                       15 years          
Agreement with partner companies, number of preferred stock received                       250,000          
Agreement with partner companies, percentage of preferred stock owned                       100.00%          
Agreement with partner companies, period for payment of equity fees                       5 days          
Agreement with partner companies, percentage of gross amount of any such equity or debt financing                       2.50%          
Agreement with partner companies, percentage of annual net assets payable as cash fee                       4.50%          
Agreement with partner companies, period for the payment of annual cash fee                       90 days          
Agreement with partner companies, change in control fee description                       each such partner company will pay a one-time change in control fee equal to five (5x) times the product of (A) net sales for the twelve (12) months immediately preceding the change in control and (B) four and one-half percent (4.5%).          
PIK dividend as a percentage of fully diluted outstanding capitalization                       2.50%          
Management Services Agreements [Member]                                  
Related Party Transaction [Line Items]                                  
Agreement with partner companies, term                       5 years          
National Securities Corporation ("NSC") [Member] | 2018 Venture Notes [Member]                                  
Related Party Transaction [Line Items]                                  
Warrant on Sale Price of Note Percentage                       25.00%          
National Securities Corporation ("NSC") [Member] | 2017 Subordinated Note Financing [Member]                                  
Related Party Transaction [Line Items]                                  
Repayments of debt                             $ 28,400,000    
Professional Fees                             $ 2,800,000    
Issuance of private placement, placement fees as a percentage of net proceeds         10.00% 10.00%                      
Warrants issued, percentage of aggregate principal amount of the Notes         10.00% 10.00%                      
National Securities Corporation ("NSC") [Member] | 2017 Subordinated Note Financing [Member] | Minimum [Member]                                  
Related Party Transaction [Line Items]                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights                             $ 3.61    
National Securities Corporation ("NSC") [Member] | 2017 Subordinated Note Financing [Member] | Maximum [Member]                                  
Related Party Transaction [Line Items]                                  
Class of Warrant or Right, Exercise Price of Warrants or Rights                             $ 4.75    
InvaGen [Member] | Avenue [Member]                                  
Related Party Transaction [Line Items]                                  
Remaining funding commitment                               $ 1,200,000  
Credit facility, amount outstanding                       $ 0          
Interest Rate                               7.00%  
Maximum borrowing capacity                               $ 2,000,000.0