Operating Segments - Profit by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Revenues	$ 8,129	$ 11,103	$ 15,916	$ 22,931
Total profit from segments	(3,033)	(8,771)	(7,528)	(11,773)
Operating segments
Segment Reporting Information [Line Items]
Total profit from segments	3,447	5,136	6,900	9,665
Operating segments | Multifamily Segment
Segment Reporting Information [Line Items]
Revenues	2,945	3,529	6,174	7,365
Operating expenses	(1,708)	(2,111)	(3,429)	(4,234)
Profit from segment	1,237	1,418	2,745	3,131
Operating segments | Commercial Segment
Segment Reporting Information [Line Items]
Revenues	4,314	6,665	8,566	13,190
Operating expenses	(2,104)	(2,947)	(4,411)	(6,656)
Profit from segment	$ 2,210	$ 3,718	$ 4,155	$ 6,534