Fair Value Measurement and Disclosures - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	$ 136,878,000		$ 136,878,000		$ 88,221,000
Transfers into Level III	0
Transfers out of Level III	$ 0		$ (94,000)
Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Debt and Equity Securities, Unrealized Gain (Loss)		Debt and Equity Securities, Unrealized Gain (Loss)
Unrealized gain (loss) on investments	$ 2,507,000		$ 2,317,000
Net Income (Loss)	10,820,000	$ 146,000	19,604,000	$ 146,000
Series I
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net Income (Loss)	2,549,000		4,212,000	0
Series II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Net Income (Loss)	8,271,000	$ 146,000	15,392,000	$ 146,000
Series I
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	$ 33,386,000		33,386,000		25,647,000
Transfers out of Level III			$ (27,000)
Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Debt and Equity Securities, Unrealized Gain (Loss)		Debt and Equity Securities, Unrealized Gain (Loss)
Unrealized gain (loss) on investments	$ (1,217,000)		$ (1,122,000)
Series II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	$ 103,492,000		103,492,000		62,574,000
Transfers out of Level III			$ (67,000)
Fair Value, Asset (Liability), Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Debt and Equity Securities, Unrealized Gain (Loss)		Debt and Equity Securities, Unrealized Gain (Loss)
Unrealized gain (loss) on investments	$ 3,724,000		$ 3,439,000
Level I | Money Market Funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	5,758,000		5,758,000		51,783,000
Level I | Series I
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	948,000		948,000		14,594,000
Level I | Series II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	4,810,000		4,810,000		37,189,000
Level III
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	452,969,000		452,969,000		64,377,000
Transfers out of Level III			(94,000)
Unrealized gain (loss) on investments	2,507,000		2,317,000
Level III | Series I
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	110,485,000		110,485,000		18,715,000
Transfers out of Level III			(27,000)
Unrealized gain (loss) on investments	(1,217,000)		(1,122,000)
Level III | Series II
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments at fair value	342,484,000		342,484,000		$ 45,662,000
Transfers out of Level III			(67,000)
Unrealized gain (loss) on investments	$ 3,724,000		$ 3,439,000