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UNCONSOLIDATED JOINT VENTURE - Summarized Financial Information for Unconsolidated Joint Venture (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Schedule of Equity Method Investments [Line Items] |  |
Income before income tax expense | $ 2,300 | $ 2,026
Comstock Holding Companies, Inc. share of net income | (96) | (50)
Title Insurance Joint Venture |  |
Schedule of Equity Method Investments [Line Items] |  |
Comstock Holding Companies, Inc. share of net income | 33 | 222
Title Insurance Joint Venture |  |
Schedule of Equity Method Investments [Line Items] |  |
Total net revenue | 185 | 558
Total expenses | 119 | 115
Income before income tax expense | $ 66 | $ 443

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