Investments and Fair Value Measurements - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2026 USD ($) investment shares	Dec. 31, 2025 USD ($) investment shares
Schedule of Investments [Line Items]
Number of additional investments acquired	2
Number of investments exchanged	11	9
Portfolio companies, cost | $	$ 851,961	$ 769,520
Class B-1 Units
Schedule of Investments [Line Items]
Limited partnership, units issued (in units) | shares	25,966,907	28,478,474