Consolidated Statements of Cash Flows $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Cash flows from operating activities:
Net increase in net assets resulting from operations	$ 196,952	$ 151,797	$ 79,879
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities:
Repayments received / sales of portfolio investments	704,144	413,368	170,104
Loan origination and other fees received	19,206	13,245	20,305
Net realized (gain) loss on investments	23,436	4,203	12,971
Net realized (gain) loss on foreign currency transactions	(2,421)	(3,916)	(3,451)
Net realized (gain) loss on forward currency contracts	22,447	11,432	(38,825)
Net unrealized (appreciation) depreciation on investments	16,165	(20,301)	30,975
Net unrealized (appreciation) depreciation on foreign currency transactions	(3,168)	7,474	(6,766)
Net unrealized (appreciation) depreciation on forward currency contracts	(52,327)	(4,959)	23,608
Payment-in-kind interest / dividends	(22,526)	(18,467)	(7,050)
Amortization of deferred financing fees	2,564	1,895	1,339
Amortization of offering costs	0	0	97
Accretion of loan origination and other fees	(16,050)	(10,432)	(10,543)
Amortization / accretion of purchased loan premium / discount	(1,802)	(1,224)	(321)
Payments for derivative contracts	(38,408)	(34,407)	(3,972)
Proceeds from derivative contracts	15,961	22,975	42,797
Changes in operating assets and liabilities:
Interest and fees receivables	(5,353)	(14,686)	(13,457)
Prepaid expenses and other assets	59	(126)	(61)
Accounts payable and accrued liabilities	3,239	(2,506)	9,586
Interest payable	(7,050)	10,679	7,534
Net cash provided by (used in) operating activities	(496,647)	(190,619)	(656,751)
Cash flows from financing activities:
Borrowings under credit facilities	445,229	201,500	357,707
Repayments under credit facilities	(378,701)	(465,908)	(78,321)
Proceeds from debt securitization	410,000	402,500	0
Repayments of debt securitization	(402,500)	0	0
Proceeds from notes payable	0	0	155,000
Proceeds from secured borrowings	0	57,161	18,559
Repayments of secured borrowings	0	(75,720)	0
Financing fees paid	(8,107)	(4,996)	(1,274)
Issuance of common stock	713,738	236,624	258,394
Purchases of shares in repurchase plan	(50,521)	(38,222)	0
Cash dividends / distributions paid	(184,988)	(130,198)	(85,376)
Net cash provided by (used in) financing activities	544,150	182,741	624,689
Net increase (decrease) in cash and foreign currencies	47,503	(7,878)	(32,062)
Cash and foreign currencies, beginning of period	83,563	91,441	123,503
Cash and foreign currencies, end of period	131,066	83,563	91,441
Supplemental disclosure of cash flow information:
Cash paid for interest	86,523	71,444	29,390
Excise taxes paid during the period	1,269	1,112	470
Summary of non-cash financing transactions:
Dividends / distributions paid through DRIP share issuances	16,415	5,719	451
Share repurchases payable	5,847	307	0
Investments Excluding Money Market Funds
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities:
Purchases of portfolio investments	(1,341,514)	(716,663)	(971,500)
Short-term investments
Adjustments to reconcile net increase (decrease) in net assets resulting from operations to net cash provided by (used in) operating activities:
Purchases of portfolio investments	$ (10,201)	$ 0	$ 0