Unconsolidated Joint Venture - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Schedule Of Equity Method Investments [Line Items]
Loss on equity method investments carried at fair value	$ (47)	$ 0
Collected and recorded distribution from joint venture	144
Title Insurance Joint Venture [Member]
Schedule Of Equity Method Investments [Line Items]
Loss on equity method investments carried at fair value	(3)	57
Collected and recorded distribution from joint venture	108	58
Title Insurance Joint Venture [Member] \| Other Income [Member]
Schedule Of Equity Method Investments [Line Items]
Loss on equity method investments carried at fair value	(3)	57
Title Insurance Joint Venture [Member] \| Prepaid and Other Assets, Net [Member]
Schedule Of Equity Method Investments [Line Items]
Investment in unconsolidated joint venture	$ 14	$ 74

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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