CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Rental and other property revenues	$ 11,947	$ 11,840	$ 23,865	$ 23,769
Property operating expenses	5,810	7,322	12,119	13,319
General and administrative	1,405	2,211	3,926	4,539
Interest income	4,227	4,878	8,754	9,436
Mortgage and loan interest	7,741	7,646	15,708	15,605
Related Party [Member]
Rental and other property revenues	280	203	456	413
Property operating expenses	254	246	496	504
General and administrative	711	919	1,766	2,420
Interest income	4,088	4,585	7,503	8,897
Mortgage and loan interest	$ 369	$ 513	$ 813	$ 1,003