Loan Sales and Servicing Activities - Geographical Distribution of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Loan Sales and Servicing Activities
Total loans serviced	$ 699,666,921	$ 665,763,827
California
Loan Sales and Servicing Activities
Total loans serviced	79,108,662	76,364,993
Texas
Loan Sales and Servicing Activities
Total loans serviced	69,822,668	65,317,775
Florida
Loan Sales and Servicing Activities
Total loans serviced	67,648,262	63,850,638
Virginia
Loan Sales and Servicing Activities
Total loans serviced	37,358,138	36,428,575
Georgia
Loan Sales and Servicing Activities
Total loans serviced	29,671,069	28,499,141
All other states
Loan Sales and Servicing Activities
Total loans serviced	$ 416,058,122	$ 395,302,705