Loans - Additional Information (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2022 USD ($) Loan MortgageLoan	Dec. 31, 2022 USD ($) Loan MortgageLoan	Dec. 31, 2022 USD ($) Loan MortgageLoan	Dec. 31, 2022 USD ($) Loan MortgageLoan	Dec. 31, 2021 USD ($) Loan MortgageLoan	Dec. 31, 2021 USD ($) Loan MortgageLoan	Dec. 31, 2021 USD ($) MortgageLoan Loan	Dec. 31, 2021 USD ($) MortgageLoan Loan	Dec. 31, 2020 USD ($)
Loans Details [Line Items]
Loans receivable, term		5 years
Mortgage loans on real estate extension period		9 months				11 months
Number of mortgage				21	21			31	31
Principal		$ 60,088	$ 60,088	$ 60,088	$ 60,088	$ 55,099	$ 55,099	$ 55,099	$ 55,099	$ 74,080
Matured at December 31, 2022, Loan | Loan	[1]	2	2	2	2
Loans receivable number of loans | Loan		21	21	21	21	31	31	31	31
Loans receivable, percent of aggregate principal		10.00%	10.00%	10.00%	10.00%
Loans receivable, amortization term		30 years
Mortgage loans on real estate number of loans renewed | Loan				9				8
Mortgage loans on real estate principal renewed			$ 32,000				$ 36,600
Number of loans sold to an unaffiliated third party | Loan				4				1
Aggregate principal amount of loans sold to unaffiliated third party		$ 9,700	9,700	$ 9,700	$ 9,700	$ 485	485	$ 485	$ 485
Gain recognized on sales of loans			122
Loans receivable largest loan (in Dollars)		9,000	9,000	9,000	9,000	7,994	7,994	7,994	7,994
Principal payment in arrears of non-performing loans		$ 4,600	$ 4,600	$ 4,600	$ 4,600	$ 1,000	$ 1,000	$ 1,000	$ 1,000
Non-Performing Number Of Loans		3	3	3	3	6	6	6	6
Interest in arrears of non-performing loans		$ 482	$ 482	$ 482	$ 482	$ 71	$ 71	$ 71	$ 71
Matured at December 31, 2022, Principal	[1]	4,630	4,630	4,630	4,630
Past Due180 Days Or More [Member]
Loans Details [Line Items]
Principal		$ 3,720	$ 3,720	$ 3,720	$ 3,720	$ 987	$ 987	$ 987	$ 987
Delinquent loans, number | MortgageLoan		1	1	1	1	3	3	3	3
Current [Member]
Loans Details [Line Items]
Principal		$ 54,359	$ 54,359	$ 54,359	$ 54,359	$ 48,274	$ 48,274	$ 48,274	$ 48,274
Delinquent loans, number | MortgageLoan		18	18	18	18	25	25	25	25
Not In Non-Accrual [Member] | Past Due 90 Days Or More [Member]
Loans Details [Line Items]
Number of mortgage | Loan				2
Number of loans | Loan						0	0	0	0
Mortgage loan, aggregate principal		$ 2,000	$ 2,000	$ 2,000	$ 2,000
Five Year Term or Less [Member]
Loans Details [Line Items]
Loans receivable number of loans | Loan		20	20	20	20
Loans receivable, percent of aggregate principal		96.00%	96.00%	96.00%	96.00%
Loans Receivable, Remaining Term		5 years
Interest Only [Member]
Loans Details [Line Items]
Loans receivable, percent of aggregate principal		69.00%	69.00%	69.00%	69.00%
Loans receivable, number of interest only loans | Loan		13	13	13	13
Largest Loan [Member]
Loans Details [Line Items]
Loans receivable largest loan (in Dollars)		$ 9,000	$ 9,000	$ 9,000	$ 9,000
Loans receivable, yield of loan acquired		7.99%	7.99%	7.99%	7.99%
Loans receivable maturity date		Sep. 01, 2025
Construction Loans [Member]
Loans Details [Line Items]
Commitment to lend outstanding		$ 0	$ 0	$ 0	$ 0
Rehabilitation Loans [Member]
Loans Details [Line Items]
Loans outstanding		0	0	0	0
Second Loan [Member]
Loans Details [Line Items]
Loans receivable largest loan (in Dollars)		$ 8,800	$ 8,800	$ 8,800	$ 8,800
Loans receivable, yield of loan acquired		8.375%	8.375%	8.375%	8.375%
Loans receivable maturity date		Jul. 01, 2027
Third Loans [Member]
Loans Details [Line Items]
Loans receivable largest loan (in Dollars)		$ 8,000	$ 8,000	$ 8,000	$ 8,000
Loans receivable, yield of loan acquired		8.375%	8.375%	8.375%	8.375%
Loans receivable maturity date		Apr. 01, 2023
Fourth Loans [Member]
Loans Details [Line Items]
Loans receivable largest loan (in Dollars)		$ 6,300	$ 6,300	$ 6,300	$ 6,300
Loans receivable, yield of loan acquired		7.75%	7.75%	7.75%	7.75%
Loans receivable maturity date		Apr. 01, 2023

[1] See Delinquency/Secured loans with payments in arrears below for more information on matured loans.