SCHEDULE IV - MORTGAGE LOANS ON REAL ESTATE - Reconciliation of Loans on Real Estate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Movement in Mortgage Loans on Real Estate [Roll Forward]
Balance at beginning of year	$ 100,882	$ 114,943	$ 111,775
Additions	58,000	59,585	18,418
Repayments	0	0	(15,250)
Conversion of OP Units	(462)	0	0
Conversion to real estate through receipt of deed	0	(72,428)	0
Allowance for credit loss	(4,534)	(1,218)	0
Balance at end of year	$ 153,886	$ 100,882	$ 114,943