Debt - Schedule of Weighted Average Interest Rates and Average Debt Outstanding (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Line of Credit Facility [Line Items]
Weighted Average Interest Rate	6.21%	6.73%	6.22%	6.77%
Average Debt Outstanding	$ 2,078,510	$ 1,705,967	$ 2,014,318	$ 1,707,547
ASPV Credit Facility \| Line of Credit
Line of Credit Facility [Line Items]
Weighted Average Interest Rate	5.53%	6.72%	5.55%	6.73%
Average Debt Outstanding	$ 254,000	$ 295,252	$ 258,419	$ 296,762
MSPV Credit Facility \| Line of Credit
Line of Credit Facility [Line Items]
Weighted Average Interest Rate	5.85%	6.41%	5.86%	6.45%
Average Debt Outstanding	$ 402,204	$ 361,976	$ 400,510	$ 336,326
SMBC Truist Credit Facility \| Line of Credit
Line of Credit Facility [Line Items]
Weighted Average Interest Rate	5.52%	7.09%	5.56%	6.76%
Average Debt Outstanding	$ 246,548	$ 38,640	$ 212,825	$ 64,907
Series A Tranche A Notes \| Senior Notes
Line of Credit Facility [Line Items]
Weighted Average Interest Rate	7.69%	7.69%	7.69%	7.69%
Average Debt Outstanding	$ 90,000	$ 90,000	$ 90,000	$ 90,000
Series A Tranche B Notes \| Senior Notes
Line of Credit Facility [Line Items]
Weighted Average Interest Rate	7.78%	7.78%	7.78%	7.78%
Average Debt Outstanding	$ 150,000	$ 150,000	$ 150,000	$ 150,000
Series B Tranche A Notes \| Senior Notes
Line of Credit Facility [Line Items]
Weighted Average Interest Rate	6.42%	6.42%	6.42%	6.42%
Average Debt Outstanding	$ 85,000	$ 85,000	$ 85,000	$ 85,000
Series B Tranche B Notes \| Senior Notes
Line of Credit Facility [Line Items]
Weighted Average Interest Rate	6.95%	7.59%	6.95%	7.59%
Average Debt Outstanding	$ 25,000	$ 25,000	$ 25,000	$ 25,000
Series B Tranche C Notes \| Senior Notes
Line of Credit Facility [Line Items]
Weighted Average Interest Rate	6.52%	6.52%	6.52%	6.52%
Average Debt Outstanding	$ 290,000	$ 290,000	$ 290,000	$ 290,000
Series C Tranche A Notes \| Senior Notes
Line of Credit Facility [Line Items]
Weighted Average Interest Rate	6.05%	6.05%	6.05%	6.05%
Average Debt Outstanding	$ 25,000	$ 275	$ 25,000	$ 138
Series C Tranche B Notes \| Senior Notes
Line of Credit Facility [Line Items]
Weighted Average Interest Rate	6.40%	6.40%	6.40%	6.40%
Average Debt Outstanding	$ 75,000	$ 824	$ 75,000	$ 414
Series D Tranche A Notes \| Senior Notes
Line of Credit Facility [Line Items]
Weighted Average Interest Rate	6.67%	0.00%	6.67%	0.00%
Average Debt Outstanding	$ 14,835	$ 0	$ 7,459	$ 0
Series D Tranche B Notes \| Senior Notes
Line of Credit Facility [Line Items]
Weighted Average Interest Rate	7.03%	0.00%	7.03%	0.00%
Average Debt Outstanding	$ 51,923	$ 0	$ 26,105	$ 0
CLO Transaction \| Secured Debt
Line of Credit Facility [Line Items]
Weighted Average Interest Rate	5.95%	6.55%	5.97%	6.67%
Average Debt Outstanding	$ 369,000	$ 369,000	$ 369,000	$ 369,000