Fair Value of Financial Instruments - Schedule of Level 3 Assets measured at Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Beginning Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	$ 1,020,800	$ 1,111,946
Transfers out of Level 3
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Purchases of Investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	24,642	12,871
PIK Interest
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	4,176	3,755
Sales or Prepayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(34,449)	(10,192)
Scheduled principal repayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(413)
Scheduled repayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value		(4,007)
Amortization of Fixed Income Premiums or Accretion of Discounts
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	3,998	2,864
Net Realized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	(1,178)
Net Change in Unrealized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(5,980)	(4,625)
Ending Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	1,012,774	1,111,434
Change in Unrealized Gain (loss) on Level 3 Investments Still Held
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(5,979)	(5,712)
Senior Secured Term Loans | Beginning Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	964,099	1,080,121
Senior Secured Term Loans | Transfers out of Level 3
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Senior Secured Term Loans | Purchases of Investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	22,175	(12,505)
Senior Secured Term Loans | PIK Interest
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	4,104	3,584
Senior Secured Term Loans | Sales or Prepayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(34,449)	(10,192)
Senior Secured Term Loans | Scheduled principal repayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(413)
Senior Secured Term Loans | Scheduled repayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value		(4,007)
Senior Secured Term Loans | Amortization of Fixed Income Premiums or Accretion of Discounts
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	3,968	2,836
Senior Secured Term Loans | Net Realized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Senior Secured Term Loans | Net Change in Unrealized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(4,307)	658
Senior Secured Term Loans | Ending Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	955,177	1,060,495
Senior Secured Term Loans | Change in Unrealized Gain (loss) on Level 3 Investments Still Held
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(4,306)	865
Second Lien Term Loans | Beginning Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	14,399	13,654
Second Lien Term Loans | Transfers out of Level 3
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Second Lien Term Loans | Purchases of Investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Second Lien Term Loans | PIK Interest
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	72	171
Second Lien Term Loans | Sales or Prepayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Second Lien Term Loans | Scheduled principal repayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Second Lien Term Loans | Scheduled repayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value		0
Second Lien Term Loans | Amortization of Fixed Income Premiums or Accretion of Discounts
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	30	28
Second Lien Term Loans | Net Realized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Second Lien Term Loans | Net Change in Unrealized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(113)	(146)
Second Lien Term Loans | Ending Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	14,388	13,707
Second Lien Term Loans | Change in Unrealized Gain (loss) on Level 3 Investments Still Held
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(113)	(146)
Convertible Note | Beginning Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	1,357
Convertible Note | Transfers out of Level 3
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Convertible Note | Purchases of Investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Convertible Note | PIK Interest
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Convertible Note | Sales or Prepayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Convertible Note | Scheduled principal repayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Convertible Note | Amortization of Fixed Income Premiums or Accretion of Discounts
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Convertible Note | Net Realized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Convertible Note | Net Change in Unrealized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(334)
Convertible Note | Ending Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	1,023
Convertible Note | Change in Unrealized Gain (loss) on Level 3 Investments Still Held
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(334)
Preferred Stock | Beginning Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	26,285	347
Preferred Stock | Transfers out of Level 3
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Preferred Stock | Purchases of Investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	25,000
Preferred Stock | PIK Interest
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Preferred Stock | Sales or Prepayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Preferred Stock | Scheduled principal repayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Preferred Stock | Scheduled repayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value		0
Preferred Stock | Amortization of Fixed Income Premiums or Accretion of Discounts
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Preferred Stock | Net Realized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Preferred Stock | Net Change in Unrealized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(251)	(3,248)
Preferred Stock | Ending Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	26,034	22,099
Preferred Stock | Change in Unrealized Gain (loss) on Level 3 Investments Still Held
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(251)	(3,248)
Common Stock | Beginning Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	872	1,174
Common Stock | Transfers out of Level 3
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Common Stock | Purchases of Investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Common Stock | PIK Interest
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Common Stock | Sales or Prepayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Common Stock | Scheduled principal repayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Common Stock | Scheduled repayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value		0
Common Stock | Amortization of Fixed Income Premiums or Accretion of Discounts
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Common Stock | Net Realized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Common Stock | Net Change in Unrealized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(733)	(253)
Common Stock | Ending Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	139	921
Common Stock | Change in Unrealized Gain (loss) on Level 3 Investments Still Held
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(733)	(253)
Equity Interest | Beginning Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	950
Equity Interest | Transfers out of Level 3
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Equity Interest | Purchases of Investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Equity Interest | PIK Interest
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Equity Interest | Sales or Prepayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Equity Interest | Scheduled principal repayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Equity Interest | Amortization of Fixed Income Premiums or Accretion of Discounts
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Equity Interest | Net Realized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Equity Interest | Net Change in Unrealized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Equity Interest | Ending Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	950
Equity Interest | Change in Unrealized Gain (loss) on Level 3 Investments Still Held
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Warrants | Beginning Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	12,838	16,650
Warrants | Transfers out of Level 3
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Warrants | Purchases of Investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	2,467	376
Warrants | PIK Interest
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Warrants | Sales or Prepayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Warrants | Scheduled principal repayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0
Warrants | Scheduled repayments of investments
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value		0
Warrants | Amortization of Fixed Income Premiums or Accretion of Discounts
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	0
Warrants | Net Realized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	0	(1,178)
Warrants | Net Change in Unrealized Gain (Loss)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	(242)	(1,636)
Warrants | Ending Fair Value
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	15,063	14,212
Warrants | Change in Unrealized Gain (loss) on Level 3 Investments Still Held
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Level 3 assets measured at fair value	$ (242)	$ (2,930)