Loans - Secured Loans by Lien Position in the Collateral (Details) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2022 USD ($) MortgageLoan	Dec. 31, 2021 USD ($) MortgageLoan
Loans (Details) - Secured Loans by Lien Position in the Collateral [Line Items]
Number of secured loans | MortgageLoan		44	54
Loans - principal (in Dollars)		$ 64,293	$ 81,097
Liens due other lenders at loan closing		25,587	31,338
Total debt		89,880	112,435
Appraised property value at loan closing		$ 173,848	$ 215,683
Percent of total debt to appraised values (LTV) at loan closing	[1]	58.40%	58.00%
Loans - percent		100.00%	100.00%
First Trust Deeds [Member]
Loans (Details) - Secured Loans by Lien Position in the Collateral [Line Items]
Number of secured loans | MortgageLoan		31	38
Loans - principal (in Dollars)		$ 54,646	$ 69,327
Loans - percent		85.00%	85.00%
Second Trust Deeds [Member]
Loans (Details) - Secured Loans by Lien Position in the Collateral [Line Items]
Number of secured loans | MortgageLoan		13	16
Loans - principal (in Dollars)		$ 9,647	$ 11,770
Loans - percent		15.00%	15.00%

[1] Based on appraised values and liens due other lenders at loan closing. The weighted-average loan-to-value (LTV) computation above does not take into account subsequent increases or decreases in property values following the loan closing nor does it include decreases or increases on senior liens to other lenders.