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Operating Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues	$ 11,937	$ 13,231	$ 39,808	$ 44,031
Total profit from segments	5,066	5,524	15,953	15,149
Multifamily Segment [Member]
Revenues	3,683	3,383	10,942	10,077
Operating expenses	(2,411)	(2,722)	(6,465)	(6,843)
Profit from segment	1,272	661	4,477	3,234
Commercial Segment [Member]
Revenues	7,770	8,024	23,518	24,275
Operating expenses	(3,976)	(3,161)	(12,042)	(12,360)
Profit from segment	$ 3,794	$ 4,863	$ 11,476	$ 11,915

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