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CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Rental and other property revenues	$ 33,409	$ 31,807	$ 96,099	$ 95,216
Property operating expenses	15,945	15,403	45,919	47,098
General and administrative	2,062	1,766	7,357	5,797
Mortgage and loan interest	17,422	15,717	49,053	49,859
Related Party [Member]
Rental and other property revenues	207	199	623	289
Property operating expenses	231	245	689	721
General and administrative	1,197	1,074	3,634	2,534
Interest income	3,275	3,638	8,554	13,511
Mortgage and loan interest	$ 2,072	$ 1,718	$ 5,780	$ 4,914

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