Commitments and Contingencies - Guarantees Outstanding (Details) - Loans sold or securitized with recourse - Loans Sold or Securitized with Recourse - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Guarantor Obligations, Maximum Potential Future Payments [Abstract]
Expire in One Year or Less	$ 17
Expire After One Year Through Three Years	19
Expire After Three Years Through Five Years	193
Expire After Five Years	20,655
Total	20,884	$ 21,777
Carrying Value	24,908	28,101
Single Family Residential
Guarantor Obligations, Maximum Potential Future Payments [Abstract]
Expire in One Year or Less	17
Expire After One Year Through Three Years	19
Expire After Three Years Through Five Years	28
Expire After Five Years	5,824
Total	5,888	6,781
Carrying Value	5,888	6,781
Multifamily residential
Guarantor Obligations, Maximum Potential Future Payments [Abstract]
Expire in One Year or Less	0
Expire After One Year Through Three Years	0
Expire After Three Years Through Five Years	165
Expire After Five Years	14,831
Total	14,996	14,996
Carrying Value	$ 19,020	$ 21,320