Derivative Activities - Offsetting of Derivative Assets - Offsetting of Derivative and Financial Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Derivatives: Subject to master netting arrangements:
Netting	$ (61,534)	$ (32,096)
Total.
Gross amounts of recognized liabilities	83,246	54,702
Net amounts of liabilities presented in the consolidated balance sheet	21,712	22,606
Mortgage loans sold under agreements to repurchase
Net amounts of liabilities presented in the consolidated balance sheet	3,004,690
Debt Issuance Costs
Net amount of liabilities in the consolidated balance sheet	3,001,283	7,292,735
Total
Net amounts of liabilities presented in the consolidated balance sheet	3,026,402	7,319,966
Net amount of liabilities in the consolidated balance sheet	21,712	22,606
Loan Repo Facility
Mortgage loans sold under agreements to repurchase
Net amounts of liabilities presented in the consolidated balance sheet	3,004,690	7,297,360
Debt Issuance Costs
Debt issuance costs, gross	(3,407)	(4,625)
Net amount of liabilities in the consolidated balance sheet	3,001,283	7,292,735
Interest rate lock commitments
Total
Net amounts of liabilities presented in the consolidated balance sheet	10,884	1,280
Net amount of liabilities in the consolidated balance sheet	$ 10,884	$ 1,280