Consolidated Statements of Assets and Liabilities (Parenthetical) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2022	Dec. 31, 2021
Investments, amortized cost	$ 2,356,143	$ 2,311,384
Foreign cash, cost	$ 17,388	$ 30,877
Derivative Asset, Type [Extensible Enumeration]	Foreign Exchange Forward [Member]	Foreign Exchange Forward [Member]
Unamortized debt issuance costs	$ 10,861	$ 15,718
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	$ 1,811,644	$ 1,921,970
Non-controlled/affiliate investment
Investments, amortized cost	124,612	100,888
Controlled affiliate
Investments, amortized cost	$ 419,887	$ 288,526

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