Fair Value of Financial Instruments - Assets at Fair Value on a Recurring Basis (Details) - Fair Value - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	$ 568,440	$ 568,610
Level 1
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	60,474	57,278
Level 2
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	62,368	56,670
Level 3
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	445,598	454,662
Bond
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	49	54
Bond \| Level 1
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	0	0
Bond \| Level 2
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	49	54
Bond \| Level 3
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	0	0
Common stock
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	178,966	177,968
Common stock \| Level 1
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	60,474	57,278
Common stock \| Level 2
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	0	0
Common stock \| Level 3
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	118,492	120,690
Convertible notes
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	12,019	11,994
Convertible notes \| Level 1
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	0	0
Convertible notes \| Level 2
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	0	0
Convertible notes \| Level 3
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	12,019	11,994
LLC interest
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	57,278	54,488
LLC interest \| Level 1
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	0	0
LLC interest \| Level 2
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	0	0
LLC interest \| Level 3
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	57,278	54,488
LP interest
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	194,907	203,730
LP interest \| Level 1
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	0	0
LP interest \| Level 2
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	62,260	56,558
LP interest \| Level 3
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	132,647	147,172
Preferred Shares
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	74,028	73,388
Preferred Shares \| Level 1
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	0	0
Preferred Shares \| Level 2
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	0	0
Preferred Shares \| Level 3
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	74,028	73,388
Rights and warrants
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	4	4
Rights and warrants \| Level 1
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	0	0
Rights and warrants \| Level 2
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	0	0
Rights and warrants \| Level 3
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	4	4
Senior loan
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	51,189	46,984
Senior loan \| Level 1
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	0	0
Senior loan \| Level 2
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	59	58
Senior loan \| Level 3
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Investments, fair value disclosure	$ 51,130	$ 46,926