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Unconsolidated Joint Venture - Summarized Financial Information for Unconsolidated Joint Venture (Detail) - Title Insurance Joint Venture [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Operations:
Total net revenue	$ 147	$ 58
Total expenses	33	30
Net income	114	28
Comstock Holding Companies, Inc. share of net income	$ 57	$ 14

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The amount of the cost of sales reported by an equity method investment of the entity.

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