Loans Held for Sale at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	$ 5,200,350	$ 4,420,691
Government-insured or guaranteed
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	2,517,566	2,099,135
Conventional mortgage loans
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	2,158,242	1,821,085
Jumbo Loan
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	58,150	21,907
Closed-end second lien mortgage loans
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	230,639	322,015
Mortgage loans purchased from Ginnie Mae pools serviced by the entity
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	222,286	146,585
Mortgage loans repurchased pursuant to representations and warranties
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	13,467	9,964
Asset Pledged as Collateral without Right
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	5,127,134	4,329,501
Asset Pledged as Collateral without Right | Loan Repo Facility
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	4,741,330	3,858,977
Asset Pledged as Collateral without Right | Mortgage Loan Participation and Sale Agreement member
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	$ 385,804	$ 470,524