Annual report pursuant to Section 13 and 15(d)

Fair Value of Financial Instruments - Additional Information (Details)

v3.22.4
Fair Value of Financial Instruments - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Unrealized Gain (Loss) on Investments $ (85,063) $ 3,311 $ 126,226
2033 Notes      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Current Price Per Par Value $ 24.59 $ 26.67  
2031 Asset-Backed Notes      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Current Price Per Par Value 0.951    
Underwriting | 2033 Notes      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Current Price Per Par Value $ 25.00    
Depreciation | Level 3 significant unobservable inputs | Debt [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Unrealized Gain (Loss) on Investments $ 18,900    
Depreciation | Level 3 significant unobservable inputs | Preferred Stock Investment Member      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Unrealized Gain (Loss) on Investments (19,400) $ (8,700)  
Depreciation | Level 3 significant unobservable inputs | Warrant Investment      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Unrealized Gain (Loss) on Investments 12,700    
Appreciation | Level 3 significant unobservable inputs | Debt [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Unrealized Gain (Loss) on Investments   5,000  
Appreciation | Level 3 significant unobservable inputs | Common Stock Investment      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Unrealized Gain (Loss) on Investments $ 6,800 15,700  
Appreciation | Level 3 significant unobservable inputs | Warrant Investment      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Unrealized Gain (Loss) on Investments   $ 6,100