Quarterly report pursuant to Section 13 or 15(d)

BORROWINGS - Schedule of Borrowings (Details)

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BORROWINGS - Schedule of Borrowings (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Debt Instrument [Line Items]    
Carrying value $ 25,000 $ 0
Principal repayment obligation   391,012
Carrying value 316,221 361,402
Principal repayment obligation 364,922  
Unamortized DFC (23,701) (29,610)
Carrying value 341,221  
Senior Secured Convertible Notes due 2025 | Secured Debt    
Debt Instrument [Line Items]    
Principal repayment obligation 25,000  
Unamortized DFC 0  
Carrying value 25,000  
Principal repayment obligation 58,334 83,334
Unamortized DFC (8,912)  
Carrying value 49,422 72,919
Unamortized DFC   (10,415)
Senior Secured Notes due 2025 | Secured Debt    
Debt Instrument [Line Items]    
Principal repayment obligation 223,910 250,000
Unamortized DFC (12,639)  
Carrying value 211,271 233,046
Unamortized DFC   (16,954)
Senior Unsecured Notes due 2028 | Unsecured Debt    
Debt Instrument [Line Items]    
Principal repayment obligation 57,678 57,678
Unamortized DFC (2,150)  
Carrying value $ 55,528 55,437
Unamortized DFC   $ (2,241)