Quarterly report pursuant to Section 13 or 15(d)

Debt and Interest (Interest Expense) (Details)

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Debt and Interest (Interest Expense) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Debt Instrument [Line Items]      
Interest expense, interest $ 1,993 $ 3,320  
Amortization of fees 609 976  
Interest expense, Total 2,602 4,296  
Unamortized debt discount fees 3,580   $ 4,144
Oaktree Note      
Debt Instrument [Line Items]      
Interest expense, interest 1,390 1,390  
Amortization of fees 502 424  
Interest expense, Total 1,892 1,814  
Partner company convertible preferred shares      
Debt Instrument [Line Items]      
Interest expense, interest 113 260  
Amortization of fees 45 60  
Interest expense, Total 158 320  
Partner company installment payments - licenses      
Debt Instrument [Line Items]      
Interest expense, interest 0 91  
Amortization of fees 0 0  
Interest expense, Total 0 91  
Partner company notes payable      
Debt Instrument [Line Items]      
Interest expense, interest 486 1,500  
Amortization of fees 62 160  
Interest expense, Total 548 1,660  
Other      
Debt Instrument [Line Items]      
Interest expense, interest 4 79  
Amortization of fees 0 332  
Interest expense, Total $ 4 $ 411