Fair Value - Key Inputs Used in Determining Fair Value of IO (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2025	Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	$ 3,967,045	$ 4,063,706
Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, Pricing spread	5.40%	5.40%
Fair value inputs, Prepayment speed	7.10%	6.50%
Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, Pricing spread	8.10%	8.10%
Fair value inputs, Prepayment speed	18.50%	17.70%
Weighted Average [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, Pricing spread	5.40%	5.40%
Fair value inputs, Prepayment speed	7.30%	6.70%
IO [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value	$ 79,052	$ 86,260
IO [Member] \| Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, Pricing spread	5.90%	5.90%
Fair value inputs, Prepayment speed	10.60%	9.40%
Fair value inputs, Equivalent life (in years)	4 years 3 months 18 days	4 years 7 months 6 days
IO [Member] \| Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, Pricing spread	6.50%	6.50%
Fair value inputs, Prepayment speed	11.90%	10.20%
Fair value inputs, Equivalent life (in years)	7 years 6 months	8 years
IO [Member] \| Weighted Average [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value inputs, Pricing spread	6.50%	6.50%
Fair value inputs, Prepayment speed	10.60%	9.40%
Fair value inputs, Equivalent life (in years)	7 years 6 months	7 years 10 months 24 days