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, 2024	Dec. 31, 2023
Guarantor obligation, maximum potential future payment [Abstract]
Expire After One Year Through Three Years	$ 12
Expire After Three Years Through Five Years	192
Expire After Five Years	19,301
Total	19,505	$ 20,884
Carrying value	22,668	24,908
Single Family Residential
Guarantor obligation, maximum potential future payment [Abstract]
Expire After One Year Through Three Years	12
Expire After Three Years Through Five Years	42
Expire After Five Years	4,455
Total	4,509	5,888
Carrying value	4,509	5,888
Multifamily residential
Guarantor obligation, maximum potential future payment [Abstract]
Expire After One Year Through Three Years	0
Expire After Three Years Through Five Years	150
Expire After Five Years	14,846
Total	14,996	14,996
Carrying value	$ 18,159	$ 19,020