Borrowings and Financing Activities - Schedule of Debt (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Total secured borrowings	$ 538,294,000	$ 119,476,000
Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 1,065,337,000	1,417,781,000
Senior Notes \| Senior Notes due 2024
Debt Instrument [Line Items]
Interest rate on senior notes	4.50%
Long-term debt	$ 0	449,037,000
Senior Notes \| Senior Notes due 2025
Debt Instrument [Line Items]
Interest rate on senior notes	6.625%
Long-term debt	$ 0	522,343,000
Senior Notes \| Senior Notes due 2027
Debt Instrument [Line Items]
Interest rate on senior notes	4.875%
Long-term debt	$ 447,461,000	446,401,000
Senior Notes \| Senior Notes due 2029
Debt Instrument [Line Items]
Interest rate on senior notes	6.20%
Long-term debt	$ 617,876,000	0
Mortgage Loan Financing Facilities
Debt Instrument [Line Items]
Long-term debt	$ 492,429,000	24,199,000
Mortgage financing facilities, average interest rate	6.647%
FHLB Advances
Debt Instrument [Line Items]
FHLB advances due in 2025, average interest rate	3.878%
FHLB advances due in 2026, average interest rate	4.469%
FHLB advances due in 2027, average interest rate	2.562%
2024	$ 0	72,871,000
2025	36,143,000	12,684,000
2026	1,835,000	1,835,000
2027	7,887,000	7,887,000
Total FHLB advances	$ 45,865,000	$ 95,277,000

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