Loans - Secured Loans by Property Type (Details) $ in Thousands		Sep. 30, 2023 USD ($) Loan	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($) Loan
Loans (Details) - Secured Loans by Property Type [Line Items]
Number of secured loans | Loan		14		21
Secured loans, principal | $		$ 54,589	$ 57,292	$ 60,088
Loans - percent		100.00%		100.00%
Single Family [Member]
Loans (Details) - Secured Loans by Property Type [Line Items]
Number of secured loans | Loan	[1]	2		4
Secured loans, principal | $	[1]	$ 3,351		$ 5,874
Loans - percent	[1]	6.00%		10.00%
Multi-family [Member]
Loans (Details) - Secured Loans by Property Type [Line Items]
Number of secured loans | Loan		2		3
Secured loans, principal | $		$ 7,550		$ 8,326
Loans - percent		14.00%		14.00%
Commercial [Member]
Loans (Details) - Secured Loans by Property Type [Line Items]
Number of secured loans | Loan		9		12
Secured loans, principal | $		$ 43,054		$ 44,587
Loans - percent		79.00%		74.00%
Land [Member]
Loans (Details) - Secured Loans by Property Type [Line Items]
Number of secured loans | Loan		1		2
Secured loans, principal | $		$ 634		$ 1,301
Loans - percent		1.00%		2.00%

[1] Single family includes one to four unit residential buildings, condominium units, townhouses and condominium complexes. At September 30, 2023, single family consists of two loans with aggregate principal of approximately $3.4 million that are non-owner occupied. At December 31, 2022, single family consisted of four loans with aggregate principal of approximately $5.9 million that were non-owner occupied.