CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Rental and other property revenues	$ 29,776	$ 27,539	$ 89,200	$ 73,599
Property operating expenses	15,413	14,195	45,295	35,987
General and administrative	1,541	1,146	4,754	4,191
Interest income	4,251	2,505	11,386	9,260
Mortgage and loan interest	13,568	13,550	38,826	31,953
Related Parties [Member]
Rental and other property revenues	174	211	521	591
Property operating expenses	221	192	644	522
General and administrative	753	727	1,501	1,547
Interest income	4,249	2,503	10,269	8,861
Mortgage and loan interest	$ 212	$ 0	$ 437	$ 31