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Debt - Narrative (Details) - USD ($)
1 Months Ended 9 Months Ended
Jun. 23, 2023
Oct. 31, 2021
Sep. 30, 2023
Sep. 30, 2022
Oct. 04, 2021
Debt Instrument [Line Items]          
Debt instrument, term 6 years        
Debt instrument, reference rate 7.75%        
Weighted average interest rate     12.90% 8.90%  
Milestone payment, percent of aggregate principal amount issued under the notes     30.00%    
Milestone payment, period     5 years    
Cumulative payments under note purchase agreement, including interest     $ 16,100,000    
Note purchase agreement, deductible amount due to company     $ 100,000,000    
Note purchase agreement, percent of aggregate outstanding principal amount, cash balance required     90.00%    
Secured Overnight Financing Rate (SOFR)          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 0.25%        
Note Purchase Agreement          
Debt Instrument [Line Items]          
Debt instrument, redemption price, percentage of principal amount redeemed     75.00%    
Note Purchase Agreement | Debt Instrument, Redemption, Period One          
Debt Instrument [Line Items]          
Debt instrument, redemption price, percentage     175.00%    
Note Purchase Agreement | Debt Instrument, Redemption, Period Two          
Debt Instrument [Line Items]          
Debt instrument, redemption price, percentage     185.00%    
Note Purchase Agreement | Debt Instrument, Redemption, Period Three          
Debt Instrument [Line Items]          
Debt instrument, redemption price, percentage     205.00%    
Oberland Capital          
Debt Instrument [Line Items]          
Note purchase agreement, value $ 300,000,000 $ 300,000,000     $ 75,000,000
Note purchase agreement, amount available for funding at the option of the company and counterparty 100,000,000 $ 100,000,000      
Oberland Capital | Senior Notes          
Debt Instrument [Line Items]          
Debt instrument, term   6 years      
Oberland Capital | First Purchase Note          
Debt Instrument [Line Items]          
Note purchase agreement, value 75,000,000        
Oberland Capital | Second Purchase Note          
Debt Instrument [Line Items]          
Note purchase agreement, value 75,000,000        
Oberland Capital | Third Purchase Note          
Debt Instrument [Line Items]          
Note purchase agreement, value $ 50,000,000        
Oberland Capital | Interest Only, Senior Secured Notes | Senior Notes          
Debt Instrument [Line Items]          
Debt instrument, interest rate floor 8.00%