SCHEDULE IV MORTGAGE LOANS ON REAL ESTATE - Loans (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) loan	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 0
Face Amount of Mortgages	26,111
Carrying Amount of Mortgages	26,087	$ 491,334	$ 486,200	$ 552,797
Multiple
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
First Mortgage | Pennsylvania
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of assets | loan	1
Maturity Date	Nov. 04, 2027
Prior Liens	$ 0
Face Amount of Mortgages	18,161
Carrying Amount of Mortgages	18,161
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
First Mortgage | Pennsylvania | Secured Overnight Financing Rate (SOFR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	3.75%
First Mortgage | Texas
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of assets | loan	2
Interest Rate	9.50%
Maturity Date	Jun. 16, 2024
Prior Liens	$ 0
Face Amount of Mortgages	7,950
Carrying Amount of Mortgages	7,926
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
First Mortgage | Texas | Secured Overnight Financing Rate (SOFR)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Interest Rate	5.50%