Derivative Financial Instruments - Offsetting of Derivative Assets - Offsetting of Derivative and Financial Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Derivatives: Subject to master netting arrangements:
Netting	$ (74,478)	$ (61,981)
Derivative liabilities, fair value
Gross amounts of recognized liabilities	91,657	102,881
Net amounts of liabilities presented in the consolidated balance sheet	17,179	40,900
Mortgage loans sold under agreements to repurchase
Net amounts of liabilities presented in the consolidated balance sheet	7,138,415
Debt Issuance Costs
Net amount of liabilities in the consolidated balance sheet	7,130,423	8,685,207
Total
Net amounts of liabilities presented in the consolidated balance sheet	7,155,594	8,733,656
Net amount of liabilities in the consolidated balance sheet	17,179	40,900
Loan Repo Facility
Mortgage loans sold under agreements to repurchase
Net amounts of liabilities presented in the consolidated balance sheet	7,138,415	8,692,756
Debt Issuance Costs
Debt issuance costs	(7,992)	(7,549)
Net amount of liabilities in the consolidated balance sheet	7,130,423	8,685,207
Forward contracts | Purchases
Derivative liabilities, fair value
Gross amounts of recognized liabilities	19,548	66,646
Forward contracts | Sales
Derivative liabilities, fair value
Gross amounts of recognized liabilities	66,775	12,854
Interest rate lock commitments
Total
Net amounts of liabilities presented in the consolidated balance sheet	5,334	23,381
Net amount of liabilities in the consolidated balance sheet	$ 5,334	$ 23,381