Loan Sales and Servicing Activities - Geographical Distribution of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Loan Sales and Servicing Activities
Total loans serviced	$ 665,763,827	$ 607,216,769
California
Loan Sales and Servicing Activities
Total loans serviced	76,364,993	72,788,272
Texas
Loan Sales and Servicing Activities
Total loans serviced	65,317,775	56,437,082
Florida
Loan Sales and Servicing Activities
Total loans serviced	63,850,638	57,824,310
Virginia
Loan Sales and Servicing Activities
Total loans serviced	36,428,575	35,376,266
Georgia
Loan Sales and Servicing Activities
Total loans serviced	28,499,141
Maryland
Loan Sales and Servicing Activities
Total loans serviced		26,746,355
All other states
Loan Sales and Servicing Activities
Total loans serviced	$ 395,302,705	$ 358,044,484