Net Assets in Liquidation - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Reorganizations [Abstract]
Increase (Decrease) in net assets on liquidation	$ (63,486,000)	$ (188,469,000)
Liquidating distributions to holders of Shares/Units	54,727,000	173,019,000
Change in liquidation value of equity investments	(11,049,000)	3,142,000
Change in liquidation value of investments in real estate	(1,519,000)	(21,900,000)
Remeasurement of assets and liabilities	$ 2,581,000	2,756,000
Change in estimated liability for non-controlling interests		1,067,000
Liquidation distribution per unit	$ 7.26
Net assets in liquidation	$ 264,441,000	327,927,000
Additional cumulative liquidating distributions to holders of Units or Common Shares	$ 391,661,000	$ 336,934,000
Additional cumulative liquidating distribution per share/unit	$ 10.75	$ 9.25
Cumulative liquidating distribution per units/share	$ 18.01	$ 18.25
Common shares, outstanding	36,425,084	36,425,084