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Debt - Notes Payable (Details) - USD ($)
Sep. 30, 2022
Dec. 31, 2021
Oct. 31, 2019
Notes payable      
Notes payable - non-current, net $ 20,006,000 $ 25,022,000  
Notes payable - current, net 11,737,000 3,184,000  
Notes payable      
Notes payable      
Principal amount of debt 47,495,000 45,503,000  
Less: unamortized discount and debt issuance costs (15,752,000) (17,297,000)  
Notes payable, net of discount 31,743,000 28,206,000  
Notes payable - non-current, net 20,006,000 25,022,000  
Notes payable - current, net 11,737,000 3,184,000  
Royalty Interest | Notes payable      
Notes payable      
Principal amount of debt 39,646,000 37,000,000  
Streeterville Note | Notes payable      
Notes payable      
Principal amount of debt 7,167,000 7,818,000  
Insurance Financing | Notes payable      
Notes payable      
Principal amount of debt 432,000 335,000  
Tempesta Note      
Notes payable      
Principal amount of debt     $ 550,000
Tempesta Note | Notes payable      
Notes payable      
Principal amount of debt $ 250,000 $ 350,000