Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments - Additional Information (Details)

v3.23.2
Fair Value of Financial Instruments - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Unrealized Gain (Loss) on Investments $ 18,858 $ (48,316) $ 39,963 $ (85,058)  
2033 Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Current Price Per Par Value $ 24.7   $ 24.7   $ 24.59
2031 Asset-Backed Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Current Price Per Par Value 0.932   $ 0.932   $ 0.951
Debt | Unobservable Inputs Level 3 | Appreciation          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Unrealized Gain (Loss) on Investments     $ 23,000 17,700  
Warrant Investment [Member] | Unobservable Inputs Level 3 | Depreciation [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Unrealized Gain (Loss) on Investments     (800)    
Warrant Investment [Member] | Unobservable Inputs Level 3 | Appreciation          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Unrealized Gain (Loss) on Investments       8,600  
Common Stock Investment [Member] | Unobservable Inputs Level 3 | Appreciation          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Unrealized Gain (Loss) on Investments     8,300 10,200  
Preferred Stock Investment Member | Unobservable Inputs Level 3 | Depreciation [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Unrealized Gain (Loss) on Investments     $ (1,700) $ (14,900)  
Underwriting | 2033 Notes          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Current Price Per Par Value $ 25   $ 25