Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions (Narrative) (Details)

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Related Party Transactions (Narrative) (Details) - USD ($)
 1 Months Ended 3 Months Ended
Aug. 31, 2020
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Dec. 30, 2022
Related Party Transaction [Line Items]          
Common Stock, par value   $ 0.001   $ 0.001 $ 0.0001
Aggregate purchase price   $ 10,119,000 $ 13,194,000    
Proceeds from issuance of Common stock   $ 894,000 447,000    
Preferred Stock, shares outstanding   3,427,138   3,427,138  
Preferred Stock, Liquidation Preference Per Share   $ 25.00   $ 25.00  
Total notes payable   $ 61,420,000   $ 60,856,000  
Avenue          
Related Party Transaction [Line Items]          
Paid in Kind dividend as a percentage of fully diluted outstanding capitalization   2.50%      
Journey          
Related Party Transaction [Line Items]          
Proceeds from Related Party Agreement   $ 9,000 15,000    
Related Party          
Related Party Transaction [Line Items]          
Revenue - related party     35,000    
Related Party | Journey          
Related Party Transaction [Line Items]          
Other receivables - related party   200,000      
TGTX | Shared Services Agreement | Related Party          
Related Party Transaction [Line Items]          
Other receivables - related party   36,000      
Revenue - related party   600,000 100,000    
TGTX | Desk Share Agreements | New York, NY Office Space          
Related Party Transaction [Line Items]          
Total payment for rent   700,000 800,000    
TGTX | Desk Share Agreements | Related Party          
Related Party Transaction [Line Items]          
Other receivables - related party   200,000      
TGTX | Desk Share Agreements | Related Party | New York, NY Office Space          
Related Party Transaction [Line Items]          
Revenue - related party   $ 500,000 $ 500,000    
Cyprium | Related Party | 9.375% Series A Cumulative Redeemable Perpetual Preferred Stock          
Related Party Transaction [Line Items]          
Preferred Stock, dividend rate percentage 9.375%        
Preferred Stock, shares outstanding   300,600      
Monthly cash dividend $ 0.19531        
Annual cash dividend payable 2.34375        
Preferred Stock, Liquidation Preference Per Share $ 25.00        
Exchange term of preferred stock 24 months