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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
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Mar. 31, 2019 | Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |
Share based compensation expense and capitalized amounts | $ 87 | $ 100
Real Estate Inventories [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |
Share based compensation cost capitalized | 3 | 14
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 | 11 | 86
General and Administrative [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |
Share based compensation cost capitalized, expensed | $ 73 | $ 0

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