Loans - Secured Loans in Non-Accrual Status (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2022 USD ($) Loan	Dec. 31, 2022 USD ($) MortgageLoan	Dec. 31, 2021 USD ($) Loan	Dec. 31, 2021 USD ($) MortgageLoan	Dec. 31, 2020 USD ($)
Loans Details Secured Loans In Nonaccrual Status [Line Items]
Number of secured loans		21	21	31	31
Mortgage Loans on Real Estate, Commercial and Consumer, Net		$ 60,088	$ 60,088	$ 55,099	$ 55,099	$ 74,080
Accrued interest		570	570	459	459
Non-accrual Status [Member]
Loans Details Secured Loans In Nonaccrual Status [Line Items]
Total recorded investment		4,013	4,013	1,173	1,173
Accrued interest	[1]	233	233	13	13
Foregone interest		233	$ 233	1	$ 1
Principal [Member] | Non-accrual Status [Member]
Loans Details Secured Loans In Nonaccrual Status [Line Items]
Number of secured loans | MortgageLoan			1		4
Mortgage Loans on Real Estate, Commercial and Consumer, Net		3,720	$ 3,720	1,044	$ 1,044
Advances [Member] | Non-accrual Status [Member]
Loans Details Secured Loans In Nonaccrual Status [Line Items]
Mortgage Loans on Real Estate, Commercial and Consumer, Net		$ 60	$ 60	$ 116	$ 116

[1] Accrued interest in the table above is the amount of interest accrued prior to the loan being placed on non-accrual status, net of any payments received while in non-accrual status. Interest income of $167 thousand and $107 thousand was recognized for loans in non-accrual status in 2022 and 2021, respectively. The amortized cost basis of loans in non-accrual status with no specific allowance at December 31, 2022 and December 31, 2021 is equivalent to the entire balance of loans in non-accrual status since there is no specific allowance recorded for any loan.