Consolidated Statements of Cash Flows - 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
Cash flows from operating activities
Net increase in net assets resulting from operations			$ 61,961	$ 97,528
Adjustments to reconcile net increase in net assets from operations to net cash used in operating activities:
Purchases of investments			(1,202,210)	(888,410)
Proceeds from principal payments and sales of investments			731,363	1,058,981
Net realized (gain) loss from investments			6,339	(18,731)
Net realized (gain) loss on foreign currency transactions	$ (2,254)	$ 72	(4,932)	2,093
Net realized loss on extinguishment of debt	745	2,546	745	2,546
Net change in unrealized appreciation on forward currency exchange contracts	2,210	(6,080)	(7,565)	(26,685)	$ (5,321)
Net change in unrealized (appreciation) depreciation on investments			40,342	(14,860)
Net change in unrealized depreciation on foreign currency translation	4,820	508	6,525	186
Increase in investments due to PIK			(10,656)	(7,820)
Accretion of discounts and amortization of premiums	176		(3,747)	(4,190)
Amortization of deferred financing costs and debt issuance costs			3,010	3,992
Changes in operating assets and liabilities:
Collateral on forward currency exchange contracts			(1,762)	370
Interest receivable on investments			(8,606)	(5,223)
Prepaid Insurance			(183)	(376)
Dividend receivable			7,952	(6,828)
Interest payable			2,907	248
Base management fee payable			(29)	2,487
Incentive fee payable			(1,751)	732
Accounts payable and accrued expenses			414	412
Net cash provided by (used in) operating activities			(379,883)	196,452
Cash flows from financing activities
Borrowings on debt			727,747	672,550
Repayments on debt			(422,248)	(783,342)
Payments of financing costs			(4,103)
Payments of debt issuance costs				(5,657)
Stockholder distributions paid			(65,853)	(65,853)
Net cash (used in) provided by financing activities			235,543	(182,302)
Net increase (decrease) in cash, foreign cash, restricted cash and cash equivalents			(144,340)	14,150
Effect of foreign currency exchange rates			(412)	(2,944)
Cash, foreign cash, restricted cash and cash equivalents, beginning of period			203,581	81,702	81,702
Cash, foreign cash, restricted cash and cash equivalents, end of period	58,829	92,908	58,829	92,908	203,581
Supplemental disclosure of cash flow information:
Cash interest paid during the period			30,134	32,875
Cash paid for excise taxes during the period				237
Supplemental disclosure of non-cash information:
Debt investment sold by the Company to ISLP				317,077
Company investment into ISLP in exchange for investments sold				128,970
Company investment into SLP			5,584
Deconsolidation of 2018-1 Issuer
Disposition of assets			470,616
Reduction of liabilities			(390,448)
Cash	32,343	34,277	32,343	34,277
Restricted Cash	14,656	57,802	14,656	57,802
Foreign cash	11,830	829	11,830	829	29,979
Total cash, foreign cash, restricted cash, and cash equivalents shown in the consolidated statements of cash flows	$ 58,829	$ 92,908	$ 58,829	$ 92,908	$ 203,581