Loans Held for Sale at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	$ 6,565,704	$ 4,420,691
Government-insured or guaranteed
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	4,327,303	2,099,135
Conventional conforming
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	1,589,131	1,821,085
Jumbo Loan
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	215,396	21,907
Closed-end second lien
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	271,094	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	151,374	146,585
Mortgage loans repurchased pursuant to representations and warranties
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	11,406	9,964
Asset Pledged as Collateral without Right
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	6,503,418	4,329,501
Asset Pledged as Collateral without Right | Loan Repo Facility
Mortgage Loans Held for Sale at Fair Value
Loans held for sale	5,954,470	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	$ 548,948	$ 470,524