Fair Value of Financial Instruments - Level 3 Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, beginning balance	$ 387,828	$ 404,234
Purchase and origination of portfolio investments	47,550	85,322
Proceeds from principal payments on portfolio investments	(26,738)	(64,134)
Sale and redemption of portfolio investments	(39,739)	(43,155)
Distributions received from portfolio investments	(14,922)	(15,595)
Conversion from debt investments to equity investments	0	0
Transfers from Level 2 to Level 3	1,289	2,596
Transfers from Level 3 to Level 2	0	(8,591)
Level 3 assets, ending balance	327,206	387,828
Net unrealized appreciation (depreciation) on investments held	$ (39,310)	$ 14,352
Net unrealized appreciation (depreciation) on investments held, location not disclosed	Net unrealized appreciation (depreciation) on investments held	Net unrealized appreciation (depreciation) on investments held
Net realized gain (loss) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	$ (11,210)	$ (14,797)
Location of amounts included in earnings - not disclosed	Net realized gain (loss) on investments	Net realized gain (loss) on investments
Net change in unrealized appreciation (depreciation) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	$ (31,973)	$ 29,172
Location of amounts included in earnings - not disclosed	Net change in unrealized appreciation (depreciation) on investments	Net change in unrealized appreciation (depreciation) on investments
Amortization of Net Loan Fees
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	$ 902	$ 1,593
Location of amounts included in earnings - not disclosed	Amortization of Net Loan Fees	Amortization of Net Loan Fees
Accretion of interest income on Structured Finance Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	$ 11,558	$ 8,731
Location of amounts included in earnings - not disclosed	Accretion of interest income on Structured Finance Securities	Accretion of interest income on Structured Finance Securities
Capitalized PIK interest and dividends
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	$ 2,719	$ 2,733
Location of amounts included in earnings - not disclosed	Capitalized PIK interest and dividends	Capitalized PIK interest and dividends
Amendment fees received
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	$ (58)	$ (281)
Location of amounts included in earnings - not disclosed	Amendment fees received	Amendment fees received
First lien debt investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, beginning balance	$ 168,037	$ 186,831
Purchase and origination of portfolio investments	25,172	49,662
Proceeds from principal payments on portfolio investments	(10,544)	(44,511)
Sale and redemption of portfolio investments	(19,174)	(13,925)
Distributions received from portfolio investments	0	0
Conversion from debt investments to equity investments	(12,650)	(2,669)
Transfers from Level 2 to Level 3	1,289	2,596
Transfers from Level 3 to Level 2		(8,591)
Level 3 assets, ending balance	155,596	168,037
First lien debt investments | Net realized gain (loss) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	7	(2,663)
First lien debt investments | Net change in unrealized appreciation (depreciation) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	2,521	(18)
First lien debt investments | Amortization of Net Loan Fees
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	473	937
First lien debt investments | Accretion of interest income on Structured Finance Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	0	0
First lien debt investments | Capitalized PIK interest and dividends
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	523	669
First lien debt investments | Amendment fees received
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	(58)	(281)
Second lien debt investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, beginning balance	34,331	48,429
Purchase and origination of portfolio investments	0	8,291
Proceeds from principal payments on portfolio investments	(7,061)	(14,069)
Sale and redemption of portfolio investments	(7,590)	(7,065)
Distributions received from portfolio investments	0	0
Conversion from debt investments to equity investments	0	0
Transfers from Level 2 to Level 3	0	0
Transfers from Level 3 to Level 2		0
Level 3 assets, ending balance	9,409	34,331
Second lien debt investments | Net realized gain (loss) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	(3,786)	(2,136)
Second lien debt investments | Net change in unrealized appreciation (depreciation) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	(7,533)	(498)
Second lien debt investments | Amortization of Net Loan Fees
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	198	413
Second lien debt investments | Accretion of interest income on Structured Finance Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	0	0
Second lien debt investments | Capitalized PIK interest and dividends
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	850	966
Second lien debt investments | Amendment fees received
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	0	0
Subordinated debt investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, beginning balance	0	0
Purchase and origination of portfolio investments		0
Proceeds from principal payments on portfolio investments		(304)
Sale and redemption of portfolio investments		0
Distributions received from portfolio investments		0
Conversion from debt investments to equity investments		0
Transfers from Level 2 to Level 3		0
Transfers from Level 3 to Level 2		0
Level 3 assets, ending balance		0
Subordinated debt investments | Net realized gain (loss) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings		(4,376)
Subordinated debt investments | Net change in unrealized appreciation (depreciation) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings		4,680
Subordinated debt investments | Amortization of Net Loan Fees
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings		0
Subordinated debt investments | Accretion of interest income on Structured Finance Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings		0
Subordinated debt investments | Capitalized PIK interest and dividends
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings		0
Subordinated debt investments | Amendment fees received
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings		0
Preferred equity
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, beginning balance	12,248	13,240
Purchase and origination of portfolio investments	2,750	0
Proceeds from principal payments on portfolio investments	0	0
Sale and redemption of portfolio investments	0	(669)
Distributions received from portfolio investments	0	0
Conversion from debt investments to equity investments	0	1,269
Transfers from Level 2 to Level 3	0	0
Transfers from Level 3 to Level 2		0
Level 3 assets, ending balance	12,567	12,248
Preferred equity | Net realized gain (loss) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	0	(2,911)
Preferred equity | Net change in unrealized appreciation (depreciation) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	(3,777)	221
Preferred equity | Amortization of Net Loan Fees
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	0	0
Preferred equity | Accretion of interest income on Structured Finance Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	0	0
Preferred equity | Capitalized PIK interest and dividends
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	1,346	1,098
Preferred equity | Amendment fees received
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	0	0
Common Equity and Warrants
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, beginning balance	96,337	76,689
Purchase and origination of portfolio investments	0	0
Proceeds from principal payments on portfolio investments	0	0
Sale and redemption of portfolio investments	(927)	(1,379)
Distributions received from portfolio investments	(269)	0
Conversion from debt investments to equity investments	12,650	1,400
Transfers from Level 2 to Level 3	0	0
Transfers from Level 3 to Level 2		0
Level 3 assets, ending balance	88,029	96,337
Common Equity and Warrants | Net realized gain (loss) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	(498)	807
Common Equity and Warrants | Net change in unrealized appreciation (depreciation) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	(19,264)	18,820
Common Equity and Warrants | Amortization of Net Loan Fees
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	0	0
Common Equity and Warrants | Accretion of interest income on Structured Finance Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	0	0
Common Equity and Warrants | Capitalized PIK interest and dividends
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	0	0
Common Equity and Warrants | Amendment fees received
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	0	0
Structured Finance Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Level 3 assets, beginning balance	76,875	79,045
Purchase and origination of portfolio investments	19,628	27,369
Proceeds from principal payments on portfolio investments	(9,133)	(5,250)
Sale and redemption of portfolio investments	(12,048)	(20,117)
Distributions received from portfolio investments	(14,653)	(15,595)
Conversion from debt investments to equity investments	0	0
Transfers from Level 2 to Level 3	0	0
Transfers from Level 3 to Level 2		0
Level 3 assets, ending balance	61,605	76,875
Net unrealized appreciation (depreciation) on investments held	(9,081)	2,190
Structured Finance Securities | Net realized gain (loss) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	(6,933)	(3,518)
Structured Finance Securities | Net change in unrealized appreciation (depreciation) on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	(3,920)	5,967
Structured Finance Securities | Amortization of Net Loan Fees
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	231	243
Structured Finance Securities | Accretion of interest income on Structured Finance Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	11,558	8,731
Structured Finance Securities | Capitalized PIK interest and dividends
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	0	0
Structured Finance Securities | Amendment fees received
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Amounts included in earnings	0	0
Debt investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net unrealized appreciation (depreciation) on investments held	(6,688)	(6,518)
Equity investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net unrealized appreciation (depreciation) on investments held	$ (23,541)	$ 18,680