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Segment Disclosures - Segment Reporting Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Gross revenue	$ 5,240	$ 3,441	$ 14,751	$ 10,133
Gross profit (loss)	668	62	1,945	753
Net income (loss)	(577)	274	(231)	761
Total assets	16,071		16,071		$ 35,100
Continued Operations [Member]
Segment Reporting Information [Line Items]
Total assets	15,915	7,328	15,915	7,328
Asset Management [Member]
Segment Reporting Information [Line Items]
Gross revenue	4,293	2,730	12,178	8,481
Gross profit (loss)	583	272	1,637	876
Net income (loss)	(369)	730	316	1,543
Asset Management [Member] | Continued Operations [Member]
Segment Reporting Information [Line Items]
Total assets	12,131	3,363	12,131	3,363
Real Estate Services [Member]
Segment Reporting Information [Line Items]
Gross revenue	947	711	2,573	1,652
Gross profit (loss)	85	(210)	308	(123)
Net income (loss)	(208)	(456)	(547)	(782)
Real Estate Services [Member] | Continued Operations [Member]
Segment Reporting Information [Line Items]
Total assets	$ 3,784	$ 3,965	$ 3,784	$ 3,965

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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