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Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 19, 2019
Debt        
Principal $ 53,088 $ 50,831 $ 54,031  
Unaccreted Discount (2,984) (2,819) (3,824)  
Debt Issuance Costs   (29) (746)  
Carrying Value 50,104 47,983 49,461  
Interest rate (stated)       3.00%
Long-term Debt, Fiscal Year Maturity [Abstract]        
2021   4,799    
2022   12,234    
2023   20,346    
2024   13,302    
2025   $ 150    
10% convertible promissory notes        
Debt        
Principal     7,324  
Unaccreted Discount     (36)  
Carrying Value     7,288  
Interest rate (stated)   10.00%    
6% promissory note, due 2020        
Debt        
Principal     185  
Carrying Value     185  
Interest rate (stated)   6.00%    
2.55% promissory notes, due 2020        
Debt        
Principal     1,100  
Unaccreted Discount     (41)  
Carrying Value     1,059  
Interest rate (stated)   2.55%    
3.5% convertible promissory note, due 2022        
Debt        
Principal     1,689  
Unaccreted Discount     (313)  
Carrying Value     1,376  
Interest rate (stated)   3.50%    
9.0% term loan, due 2023        
Debt        
Principal     40,500  
Unaccreted Discount     (528)  
Debt Issuance Costs     (689)  
Carrying Value     39,283  
Interest rate (stated)   9.00%    
3% promissory note, due 2024        
Debt        
Principal     3,000  
Unaccreted Discount     (2,906)  
Debt Issuance Costs     (57)  
Carrying Value     37  
Interest rate (stated)   3.00%    
1.0% promissory notes, due 2022        
Debt        
Principal 10,343 $ 8,317    
Carrying Value $ 10,343 $ 8,317    
Interest rate (stated) 1.00% 1.00%    
11.05% term loan, due 2024        
Debt        
Principal   $ 41,764    
Unaccreted Discount   (2,686)    
Debt Issuance Costs   (29)    
Carrying Value   $ 39,049    
Interest rate (stated)   11.05%    
8.55% term loan, due 2024        
Debt        
Principal $ 42,145      
Unaccreted Discount (2,867)      
Carrying Value $ 39,278      
Interest rate (stated) 8.55%      
Other notes        
Debt        
Principal $ 600 $ 750 233  
Unaccreted Discount (117) (133)    
Carrying Value $ 483 617 $ 233  
10% convertible notes        
Debt        
Principal   5,500    
Fair Value   $ 11,659    
Interest rate (stated)   10.00%