Consolidated Statements of Assets and Liabilities (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Investments, amortized cost	$ 2,301,834	$ 2,419,938
Foreign cash, cost	$ 6,865	$ 34,528
Derivative Asset, Type [Extensible Enumeration]	Foreign Exchange Forward [Member]	Foreign Exchange Forward [Member]
Unamortized debt issuance costs	$ 7,567	$ 10,197
Common stock, par value per share (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100,000,000,000	100,000,000,000
Common stock, shares issued	64,562,265	64,562,265
Common stock, outstanding	64,562,265	64,562,265
Non-controlled/non-affiliate
Investments, amortized cost	$ 1,615,061	$ 1,846,172
Non-controlled/affiliate investment
Investments, amortized cost	132,650	133,808
Controlled affiliate
Investments, amortized cost	$ 554,123	$ 439,958