Senior Securities - Summary of Senior Securities (Details) - USD ($)		Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Capital Call Facility
Line Of Credit Facility [Line Items]
Total Amount Outstanding	[1]	$ 53,500,000	$ 37,500,000	$ 22,000,000
Asset Coverage Per Unit	[2]	4,727	5,642	4,928
Unsecured Notes
Line Of Credit Facility [Line Items]
Total Amount Outstanding	[1]	110,000	110,000	110,000	$ 110,000
Asset Coverage Per Unit	[2]	$ 4,717	$ 5,642	$ 4,904	$ 272,472

[1] Total amount of each class of senior securities outstanding at the end of the period presented.

[2] The asset coverage ratio for a class of senior securities representing indebtedness is calculated as our total assets, less all liabilities and indebtedness not represented by senior securities, divided by senior securities representing indebtedness. The asset coverage ratio with respect to indebtedness is multiplied by $1,000 to determine the Asset Coverage Per Unit.