Consolidated Statements of Assets And Liabilities - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Investments at fair value:
Cash	$ 19,931	$ 16,761
Cash equivalents (cost: $447,074 and $397,510, respectively)	447,074	397,510
Dividends receivable	17,423	15,375
Interest receivable	11,645	11,993
Receivable for investments sold	1,336	1,573
Prepaid expenses and other assets	1,164	571
Total assets	2,502,972	2,449,417
Liabilities
Debt ($1,048,260 and $1,041,093 face amounts, respectively, reported net of unamortized debt issuance costs of $8,848 and $9,399, respectively. See note 7)	1,039,412	1,031,694
Payable for investments and cash equivalents purchased	447,074	397,510
Management fee payable (see note 3)	7,513	7,739
Performance-based incentive fee payable (see note 3)	5,523	5,920
Interest payable (see note 7)	6,040	7,836
Administrative services payable (see note 3)	4,084	3,332
Other liabilities and accrued expenses	2,841	2,460
Total liabilities	1,512,487	1,456,491
Commitments and contingencies (see note 9)
Net Assets
Common stock, par value $0.01 per share, 200,000,000 and 200,000,000 common shares authorized, respectively, and 54,554,634 and 54,554,634 shares issued and outstanding, respectively	546	546
Paid-in capital in excess of par	1,117,606	1,117,606
Accumulated distributable net loss	(127,667)	(125,226)
Total net assets	$ 990,485	$ 992,926
Net Asset Value Per Share	$ 18.16	$ 18.2
Companies less than 5% owned [Member]
Investments at fair value:
Investments at fair value:	$ 1,021,278	$ 1,027,457
Companies 5% to 25% owned [Member]
Investments at fair value:
Investments at fair value:	89,490	89,945
Companies more than 25% owned [Member]
Investments at fair value:
Investments at fair value:	$ 893,631	$ 888,232