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Restricted Stock, Stock Options and Other Stock Plans - Summary of Consolidated Balance Sheets and Statements of Operations Line Items for Stock-Based Compensation (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |
Share based compensation expense and capitalized amounts | $ 122 | $ 69 | $ 206 | $ 155
Cost of Sales - Real Estate Services [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |
Share based compensation cost capitalized, expensed | 27 | 0 | 38 | 86
General and Administrative [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |
Share based compensation cost capitalized, expensed | $ 95 | $ 69 | $ 168 | $ 69

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