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Segment Disclosures - Segment Reporting Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Gross revenue	$ 8,317	$ 6,966
Gross profit	1,152	1,118
Net income	247	(12)
Total assets	27,720	22,790	$ 28,579
Asset Management
Segment Reporting Information [Line Items]
Gross revenue	6,840	5,435
Gross profit	762	803
Net income	403	284
Total assets	23,778	19,661
Real estate services
Segment Reporting Information [Line Items]
Gross revenue	1,477	1,531
Gross profit	390	315
Net income	(156)	(296)
Total assets	$ 3,942	$ 3,129

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