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Unconsolidated Joint Venture - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	50.00%
Title Insurance Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Earnings from the unconsolidated joint venture	$ 57	$ 14
Collected total distributions from joint venture	$ 58	$ 10

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Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

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