Borrowings - Schedule of Components of the Company's Interest Expense and Other Debt Financing Expenses, Average Debt Outstanding Balances and Average Stated Interest Rates (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Borrowings
Amortization of debt issuance costs	$ 2,853	$ 1,999
Total interest and other debt financing expenses	39,593	27,220
Average debt outstanding	$ 2,128,049	$ 1,313,104
Average stated interest rate	7.00%	7.70%
Interest expense - Revolving Credit Facility
Borrowings
Interest expense	$ 7,596	$ 5,582
Interest expense - SPV Credit Facility
Borrowings
Interest expense	3,915	5,073
Interest expense - SPV II Credit Facility
Borrowings
Interest expense	3,118	2,342
Interest expense - SPV III Credit Facility
Borrowings
Interest expense	1,563	0
Interest expense - SPV IV Credit Facility
Borrowings
Interest expense	4,743	0
Interest expense - SPV V Credit Facility
Borrowings
Interest expense	362	0
Interest expense - 2022 ABS
Borrowings
Interest expense	3,010	3,221
Interest expense - 2023 ABS
Borrowings
Interest expense	3,913	4,293
Interest expense - 2028 Notes
Borrowings
Interest expense	4,710	4,710
Interest expense - 2029 Notes
Borrowings
Interest expense	$ 3,810	$ 0