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, 2022
Mar. 31, 2021
Dec. 31, 2021
Debt Instrument [Line Items]      
Interest expense, interest $ 1,961 $ 1,880  
Amortization of fees 389 309  
Interest expense, Total 2,350 2,189  
Unamortized debt discount fees 10,994   $ 7,063
Letter of Credit [Member]      
Debt Instrument [Line Items]      
Interest expense, interest 15 9  
Amortization of fees 0 0  
Interest expense, Total 15 9  
Oaktree Note [Member]      
Debt Instrument [Line Items]      
Interest expense, interest 1,375 1,650  
Amortization of fees 356 309  
Interest expense, Total 1,731 1,959  
Partner company installment payments - licenses [Member]      
Debt Instrument [Line Items]      
Interest expense, interest 203 221  
Amortization of fees 0 0  
Interest expense, Total 203 221  
Partner Company Notes Payable [Member]      
Debt Instrument [Line Items]      
Interest expense, interest 368 0  
Amortization of fees 33 0  
Interest expense, Total $ 401 $ 0