Financial Highlights and Senior Securities (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Investment Company, Financial Highlights [Roll Forward]
Net asset value, beginning of period (in usd per share)	$ 27.39	$ 26.66
Net investment income (in usd per share)	0.83	0.87
Net unrealized and realized gain (loss) (in usd per share)	(0.17)	0.09
Net increase (decrease) in net assets resulting from operations (in usd per share)	0.66	0.96
Distributions from net investment income (in usd per share)	(0.77)	(0.77)
Net increase (decrease) in net assets from capital share transactions (in usd per share)	0.11	0.02
Total increase (decrease) in net assets (in usd per share)	0.00	0.21
Net asset value, ending of period (in usd per share)	27.39	26.87
Market value, end of period (in usd per share)	$ 32.36	$ 31.15
Shares outstanding end of period (in shares)	227,818,928	191,874,419	221,892,184
Total return based on NAV	2.80%	3.40%
Total return based on market value	2.60%	15.90%
Ratios:
Ratio of net expenses to average net assets	10.50%	10.70%
Ratio of net investment income to average net assets	12.20%	12.80%
Portfolio turnover rate	5.30%	1.80%
Supplemental Data:
Total net assets	$ 6,240,869	$ 5,155,665	$ 6,076,521	$ 4,952,041
Asset coverage ratio	184.20%	197.30%	185.70%
Ratio of expenses to average net assets, before waivers	10.50%	10.70%