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Unconsolidated Joint Venture - Summarized Financial Information for Unconsolidated Joint Venture (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Operations:
Change in fair value	$ (47)	$ 0
Title Insurance Joint Venture [Member]
Statement of Operations:
Total net revenue	31	147
Total expenses	37	33
Net (loss)income	(6)	114
Change in fair value	$ (3)	$ 57

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