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LONG-TERM DEBT RELATED-PARTY - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Aug. 15, 2022
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Mar. 27, 2018
Debt Instrument [Line Items]          
Principal amount   $ 49,624 $ 0 $ 0  
Accrued interest, related-party   663 0    
2.50% Convertible Notes due 2023 | Convertible Notes          
Debt Instrument [Line Items]          
Interest rate         2.50%
Fair value   51,900 89,400    
Unamortized debt discount   0 11,787    
Effective interest rate         3.20%
Total debt   56,413 $ 107,984    
Five Point Zero Percent Secured Promissory Note | Senior Notes | Jack W. Schuler Living Trust | Level 3          
Debt Instrument [Line Items]          
Fair value $ 16,000        
August 2022 Exchange Transaction          
Debt Instrument [Line Items]          
Maximum shares issuable to aggregate outstanding shares, percent 19.99%        
August 2022 Exchange Transaction | 2.50% Convertible Notes due 2023 | Convertible Notes | Jack W. Schuler Living Trust          
Debt Instrument [Line Items]          
Principal amount $ 49,900        
August 2022 Exchange Transaction | Five Point Zero Percent Secured Promissory Note | Senior Notes | Jack W. Schuler Living Trust          
Debt Instrument [Line Items]          
Principal amount $ 34,900        
Initial conversion price (in dollars per share) $ 2.12        
Interest rate 5.00%        
Unamortized debt discount   $ 18,900      
Effective interest rate   24.60%      
Total debt   $ 16,858      
Accrued interest, related-party   700      
Expected first and final interest payment   $ 9,900      
August 2022 Exchange Transaction | Five Point Zero Percent Secured Promissory Note | Senior Notes | Jack W. Schuler Living Trust | Level 3          
Debt Instrument [Line Items]          
Fair value $ 16,000