Fair Value Measurements - Schedule of Quantitative Information Regarding Level 3 Fair Value Measurements (Details) - Level 3 $ in Thousands	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Investments	$ 1,020,800	$ 1,111,946
Senior Secured Term Loans | Discounted Cash Flow Analysis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Investments	$ 904,739	$ 1,053,748
Senior Secured Term Loans | Discounted Cash Flow Analysis | Minimum | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.108	0.111
Senior Secured Term Loans | Discounted Cash Flow Analysis | Minimum | Origination Yield
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.108	0.105
Senior Secured Term Loans | Discounted Cash Flow Analysis | Minimum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.0029
Senior Secured Term Loans | Discounted Cash Flow Analysis | Maximum | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.222	0.28
Senior Secured Term Loans | Discounted Cash Flow Analysis | Maximum | Origination Yield
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.199	0.193
Senior Secured Term Loans | Discounted Cash Flow Analysis | Maximum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.0749
Senior Secured Term Loans | Discounted Cash Flow Analysis | Weighted Average | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.15	0.152
Senior Secured Term Loans | Discounted Cash Flow Analysis | Weighted Average | Origination Yield
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.136	0.129
Senior Secured Term Loans | Discounted Cash Flow Analysis | Weighted Average | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.0366
Senior Secured Term Loans | PWERM
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Investments	$ 59,360	$ 26,373
Senior Secured Term Loans | PWERM | Minimum | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.203	0.274
Senior Secured Term Loans | PWERM | Minimum | Origination Yield
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.108
Senior Secured Term Loans | PWERM | Minimum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.0095
Senior Secured Term Loans | PWERM | Maximum | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.465	0.374
Senior Secured Term Loans | PWERM | Maximum | Origination Yield
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.297
Senior Secured Term Loans | PWERM | Maximum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.0316
Senior Secured Term Loans | PWERM | Weighted Average | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.288	0.309
Senior Secured Term Loans | PWERM | Weighted Average | Origination Yield
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.173
Senior Secured Term Loans | PWERM | Weighted Average | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.0189
Second Lien Term Loans | Discounted Cash Flow Analysis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Investments	$ 14,399	$ 13,654
Second Lien Term Loans | Discounted Cash Flow Analysis | Minimum | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.161	0.161
Second Lien Term Loans | Discounted Cash Flow Analysis | Minimum | Origination Yield
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.131	0.122
Second Lien Term Loans | Discounted Cash Flow Analysis | Maximum | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.161	0.161
Second Lien Term Loans | Discounted Cash Flow Analysis | Maximum | Origination Yield
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.131	0.122
Second Lien Term Loans | Discounted Cash Flow Analysis | Weighted Average | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.161	0.161
Second Lien Term Loans | Discounted Cash Flow Analysis | Weighted Average | Origination Yield
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.131	0.122
Convertible Note | PWERM
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Investments	$ 1,357
Convertible Note | PWERM | Minimum | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.45
Convertible Note | PWERM | Minimum | Origination Yield
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.108
Convertible Note | PWERM | Maximum | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.45
Convertible Note | PWERM | Maximum | Origination Yield
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.108
Convertible Note | PWERM | Weighted Average | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.45
Convertible Note | PWERM | Weighted Average | Origination Yield
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Debt securities, measurement input	0.108
Preferred Stock
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Investments	$ 120	$ 347
Preferred Stock | PWERM
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Investments	$ 26,038
Preferred Stock | PWERM | Minimum | Risk-Free Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.047
Preferred Stock | PWERM | Minimum | Average Industry Volatility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.40
Preferred Stock | PWERM | Minimum | Estimated Time to Exit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, outstanding term	2 years
Preferred Stock | PWERM | Minimum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.0446
Preferred Stock | PWERM | Maximum | Risk-Free Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.047
Preferred Stock | PWERM | Maximum | Average Industry Volatility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.40
Preferred Stock | PWERM | Maximum | Estimated Time to Exit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, outstanding term	2 years
Preferred Stock | PWERM | Maximum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.0446
Preferred Stock | PWERM | Weighted Average | Risk-Free Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.047
Preferred Stock | PWERM | Weighted Average | Average Industry Volatility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.40
Preferred Stock | PWERM | Weighted Average | Estimated Time to Exit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, outstanding term	2 years
Preferred Stock | PWERM | Weighted Average | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.0446
Preferred Stock | Waterfall Approach
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Investments	$ 127
Preferred Stock | Waterfall Approach | Minimum | Estimated Time to Exit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, outstanding term	3 years
Preferred Stock | Waterfall Approach | Minimum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.04
Preferred Stock | Waterfall Approach | Maximum | Estimated Time to Exit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, outstanding term	3 years
Preferred Stock | Waterfall Approach | Maximum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.04
Preferred Stock | Waterfall Approach | Weighted Average | Estimated Time to Exit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, outstanding term	3 years
Preferred Stock | Waterfall Approach | Weighted Average | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.04
Common Stock
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Investments	$ 16	1,174
Common Stock | Option Pricing Model
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Investments	$ 856
Common Stock | Option Pricing Model | Minimum | Risk-free Interest Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.043
Common Stock | Option Pricing Model | Minimum | Average Industry Volatility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.35
Common Stock | Option Pricing Model | Minimum | Estimated Time to Exit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, outstanding term	5 years
Common Stock | Option Pricing Model | Minimum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.0328
Common Stock | Option Pricing Model | Maximum | Risk-free Interest Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.043
Common Stock | Option Pricing Model | Maximum | Average Industry Volatility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.35
Common Stock | Option Pricing Model | Maximum | Estimated Time to Exit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, outstanding term	5 years
Common Stock | Option Pricing Model | Maximum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.0328
Common Stock | Option Pricing Model | Weighted Average | Risk-free Interest Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.043
Common Stock | Option Pricing Model | Weighted Average | Average Industry Volatility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.35
Common Stock | Option Pricing Model | Weighted Average | Estimated Time to Exit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, outstanding term	5 years
Common Stock | Option Pricing Model | Weighted Average | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.0328
Equity Interest | PWERM
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Investments	$ 950
Equity Interest | PWERM | Minimum | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.20
Equity Interest | PWERM | Maximum | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.20
Equity Interest | PWERM | Weighted Average | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Equity securities, measurement input	0.20
Warrants | Option Pricing Model
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Investments	$ 7,075	$ 10,246
Warrants | Option Pricing Model | Minimum | Risk-free Interest Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input	0.038	0.027
Warrants | Option Pricing Model | Minimum | Average Industry Volatility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input	0.25	0.25
Warrants | Option Pricing Model | Minimum | Estimated Time to Exit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, term	9 months 18 days	6 months
Warrants | Option Pricing Model | Minimum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input	0.0095	0.0116
Warrants | Option Pricing Model | Maximum | Risk-free Interest Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input	0.053	0.049
Warrants | Option Pricing Model | Maximum | Average Industry Volatility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input	1.088	0.984
Warrants | Option Pricing Model | Maximum | Estimated Time to Exit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, term	8 years 2 months 12 days	5 years
Warrants | Option Pricing Model | Maximum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input	0.0749	0.8863
Warrants | Option Pricing Model | Weighted Average | Risk-free Interest Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input	0.045	0.043
Warrants | Option Pricing Model | Weighted Average | Average Industry Volatility
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input	0.454	0.49
Warrants | Option Pricing Model | Weighted Average | Estimated Time to Exit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, term	3 years 1 month 6 days	2 years 2 months 12 days
Warrants | Option Pricing Model | Weighted Average | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input	0.0395	0.0547
Warrants | PWERM
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Investments	$ 3,912	$ 6,404
Warrants | PWERM | Minimum | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input		0.20
Warrants | PWERM | Minimum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input		0.0235
Warrants | PWERM | Maximum | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input		0.40
Warrants | PWERM | Maximum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input		1.9938
Warrants | PWERM | Weighted Average | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input		0.346
Warrants | PWERM | Weighted Average | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input		0.131
Warrants | Waterfall Approach
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Investments	$ 1,851
Warrants | Waterfall Approach | Minimum | Estimated Time to Exit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, term	3 years
Warrants | Waterfall Approach | Minimum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input	0.0258
Warrants | Waterfall Approach | Maximum | Estimated Time to Exit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, term	3 years
Warrants | Waterfall Approach | Maximum | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input	0.04
Warrants | Waterfall Approach | Weighted Average | Estimated Time to Exit
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, term	3 years
Warrants | Waterfall Approach | Weighted Average | Revenue Multiples
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Warrants outstanding, measurement input	0.0339