Commitments and Contingencies - Guarantees Outstanding (Details) - Loans sold or securitized with recourse - Loans Sold or Securitized with Recourse - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Guarantor Obligations, Maximum Potential Future Payments [Abstract]
Expire in One Year or Less	$ 36
Expire After One Year Through Three Years	111
Expire After Three Years Through Five Years	0
Expire After Five Years	21,630
Total	21,777	$ 22,922
Carrying Value	28,101	31,095
Single Family Residential
Guarantor Obligations, Maximum Potential Future Payments [Abstract]
Expire in One Year or Less	36
Expire After One Year Through Three Years	111
Expire After Three Years Through Five Years	0
Expire After Five Years	6,634
Total	6,781	7,926
Carrying Value	6,781	7,926
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	0
Expire After Five Years	14,996
Total	14,996	14,996
Carrying Value	$ 21,320	$ 23,169