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Summary of Significant Accounting Policies - Segment Reporting Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Segment Reporting Information [Line Items] |  |
Gross revenue | $ 56,749 | $ 45,430
Gross profit, excluding impairment charges | (431) | 2,546
Net (loss) income | (4,966) | (4,740)
Net (loss) income | (4,046) | (4,778)
Total assets | 35,100 | 51,158
Depreciation, amortization, and stock based compensation | 397 | 586
Interest expense | 171 | 41
Asset Management [Member] |  |
Segment Reporting Information [Line Items] |  |
Gross revenue | 12,473 | 0
Gross profit, excluding impairment charges | 1,182 | 0
Net (loss) income | 1,187 |
Net (loss) income |  | 0
Total assets | 2,882 | 0
Depreciation, amortization, and stock based compensation | 159 | 0
Interest expense | 0 | 0
Real Estate Services [Member] |  |
Segment Reporting Information [Line Items] |  |
Gross revenue | 3,031 | 2,031
Gross profit, excluding impairment charges | (59) | (268)
Net (loss) income | (849) |
Net (loss) income |  | (430)
Total assets | 3,242 | 3,684
Depreciation, amortization, and stock based compensation | 221 | 177
Interest expense | 97 | 41
Homebuilding [Member] |  |
Segment Reporting Information [Line Items] |  |
Gross revenue | 41,245 | 43,399
Gross profit, excluding impairment charges | (1,554) | 2,814
Net (loss) income | (5,304) |
Net (loss) income |  | (4,348)
Total assets | 28,976 | 47,474
Depreciation, amortization, and stock based compensation | 17 | 409
Interest expense | $ 74 | $ 0

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