Statements of Assets and Liabilities (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2022		Dec. 31, 2021
Investment cost	$ 1,150,602		$ 727,324
Common stock, par value	$ 0.01		$ 0.01
Common stock, shares authorized	100,000,000		100,000,000
Non-Control/Non-Affiliate Investments
Investment cost	$ 1,126,879		$ 647,449
Affiliate Investments
Investment cost	4,551	[1]	0
Control Investments
Investment cost	19,172	[2]	34,874
U.S. Treasury Bills
Investment cost	$ 0		$ 45,001

[1] Affiliate investment as defined under the 1940 Act in which the Company owns between 5% and 25% (inclusive) of the investment's voting securities and does not have rights to maintain greater than 50% representation on the board.

[2] Control investment as defined under the 1940 Act in which the Company owns at least 25% of the investment’s voting securities or has greater than 50% representation on its board.