SCHEDULE IV MORTGAGE LOANS ON REAL ESTATE - Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Mortgage loans on real estate
Balance at the beginning of the period	$ 344,442	$ 257,251	$ 254,099
New mortgage loans	31,965	88,415
Other additions	8,767	540	4,253
Application of interest reserve	6,192	298
Amortization of mortgage premium	(6)	(6)	(4)
Collections of principal	(1,175)	(1,175)	(1,065)
Loan loss reserve	(457)	(881)	(32)
Balance at the end of the period	$ 389,728	$ 344,442	$ 257,251