Annual report pursuant to Section 13 and 15(d)

FAIR VALUE MEASUREMENTS - Schedule of Amortized Cost and Fair Value of Debt (Details)

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FAIR VALUE MEASUREMENTS - Schedule of Amortized Cost and Fair Value of Debt (Details) - USD ($)
Dec. 31, 2023
Dec. 31, 2022
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Amortized cost $ 305,000,000  
Senior Secured Term Loan | Fair Value, Inputs, Level 2    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Amortized cost 180,042,000  
Fair value 174,812,000  
Term Loan – UBS | Fair Value, Inputs, Level 2    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Amortized cost   $ 298,956,000
Fair value   283,612,000
Mandatorily Redeemable Preferred Stock Due to Affiliate | Fair Value, Inputs, Level 2 | Affiliate    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Amortized cost 141,594,000  
Fair value 141,398,000  
Backstop Notes | Fair Value, Inputs, Level 3    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Amortized cost 117,916,000 117,545,000
Fair value $ 91,204,000 $ 92,900,000