Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Significant Accounting Policies [Line Items]
Amortization income of purchase discount	$ 4,471	$ 15,499	$ 12,506	$ 34,024
Percentage of non-accrual investment at amortized cost	1.40%		1.40%		2.50%
Percentage of non-accrual investment at fair value	0.40%		0.40%		1.80%
Cash	$ 32,670		$ 32,670		$ 33,764
Excise taxes	827	$ 308	2,494	$ 924
Accrued excise taxes	1,469		1,469
Foreign Currency [Member]
Significant Accounting Policies [Line Items]
Cash	$ 1,536		1,536		2,614
Acquisition cost			$ 1,684		$ 2,760