Loans - Secured Loans in Non-Accrual Status (Details) $ in Thousands		1 Months Ended	9 Months Ended		12 Months Ended
		Jun. 30, 2020 MortgageLoan	Sep. 30, 2022 USD ($) Loan	Sep. 30, 2022 USD ($) MortgageLoan	Dec. 31, 2021 USD ($) Loan	Dec. 31, 2021 USD ($) MortgageLoan	Jun. 30, 2022 USD ($)
Loans Details Secured Loans In Nonaccrual Status [Line Items]
Number of secured loans		2	23	23,000	31	31
Mortgage Loans on Real Estate, Commercial and Consumer, Net			$ 61,253	$ 61,253	$ 55,099	$ 55,099	$ 63,056
Accrued interest			615	615	459	459
Non-accrual Status [Member]
Loans Details Secured Loans In Nonaccrual Status [Line Items]
Secured Recorded investment amount			3,994	3,994	1,173	1,173
Accrued interest	[1]		233	233	13	13
Foregone interest			133	$ 133	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			$ 41	$ 41	$ 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. No interest income was recognized for loans in non-accrual status in the three and nine months ended September 30, 2022. The amortized cost basis of loans in non-accrual status with no specific allowance at September 30, 2022 is equivalent to the entire balance of loans in non-accrual status since there is no specific allowance recorded for any loan.