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Investments in Unconsolidated Entities - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Dec. 30, 2019	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Fair value of equity method investment		$ 3,652		$ 3,652		$ 6,307
Change in fair value of equity method investment				112	$ 88
Loss on equity method investments carried at fair value		(131)	$ (41)	(112)	(88)
Level 3
Schedule of Equity Method Investments [Line Items]
Fair value of equity method investment		3,652		3,652		6,307
Distributions				2,543
Change in fair value of equity method investment				(112)
Investors X
Schedule of Equity Method Investments [Line Items]
Fair value of equity method investment		2,500		2,500		5,100
Distributions		895		2,500
Change in fair value of equity method investment		(107)		(107)
The Hartford
Schedule of Equity Method Investments [Line Items]
Fair value of equity method investment		1,200		1,200		1,200
Change in fair value of equity method investment		(24)		(24)
Percentage of ownership interest	2.50%
Equity method investment cost	$ 1,200
Title Insurance Joint Venture
Schedule of Equity Method Investments [Line Items]
Distributions		30	0	30	108
Title Insurance Joint Venture | Other Income
Schedule of Equity Method Investments [Line Items]
Loss on equity method investments carried at fair value		30	$ 18	18	$ 15
Title Insurance Joint Venture | Prepaid and Other Assets, Net
Schedule of Equity Method Investments [Line Items]
Investment in unconsolidated joint venture		$ 17		$ 17		$ 29

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