Commitments and Contingencies - Schedule of Guarantees Outstanding (Details) - Loans Sold or Securitized With Recourse - Loans Sold or Securitized with Recourse - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Guarantor obligation, maximum potential future payment [Abstract]
Expire After One Year Through Three Years	$ 68
Expire After Three Years Through Five Years	417
Expire After Five Years	17,952
Total	18,437	$ 19,371
Carrying value	19,875	22,145
Single Family Residential
Guarantor obligation, maximum potential future payment [Abstract]
Expire After One Year Through Three Years	17
Expire After Three Years Through Five Years	339
Expire After Five Years	3,085
Total	3,441	4,375
Carrying value	3,441	4,375
Multifamily residential
Guarantor obligation, maximum potential future payment [Abstract]
Expire After One Year Through Three Years	51
Expire After Three Years Through Five Years	78
Expire After Five Years	14,867
Total	14,996	14,996
Carrying value	$ 16,434	$ 17,770