Liability for Estimated Costs in Excess of Estimated Receipts During Liquidation - Schedule of Changes in Liability for Estimated Costs in Excess of Estimated Receipts During Liquidation (Detail) - USD ($) $ in Thousands	5 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2015
Business Acquisition [Line Items]
Remeasurement of Assets and Liabilities	$ 9,489	$ 3,449
Liquidation Value [Member]
Business Acquisition [Line Items]
Total liability for estimated costs in excess of estimated receipts during liquidation, beginning balance	(27,225)	(31,253)
Cash Payments (Receipts)	(5,461)	(932)
Remeasurement of Assets and Liabilities	9,489	3,449
Deconsolidation		(4,473)
Total liability for estimated costs in excess of estimated receipts during liquidation, ending balance	(31,253)	(29,297)
Liquidation Value [Member] | Assets [Member]
Business Acquisition [Line Items]
Estimated net inflows from investments in real estate, loans receivable and secured financing receivable, beginning balance	38,400	25,169
Cash Payments (Receipts)	5,183	12,551
Remeasurement of Assets and Liabilities	8,048	2,149
Deconsolidation		(54)
Estimated net inflows from investments in real estate, loans receivable and secured financing receivable, ending balance	25,169	10,523
Liability [Member] | Liquidation Value [Member]
Business Acquisition [Line Items]
Total liability for estimated costs, beginning balance	(65,625)	(56,422)
Cash Payments (Receipts)	10,644	13,483
Remeasurement of Assets and Liabilities	(1,441)	(1,300)
Deconsolidation		4,419
Total liability for estimated costs, ending balance	(56,422)	(39,820)
Liability [Member] | Liquidation Value [Member] | Sales Costs [Member]
Business Acquisition [Line Items]
Total liability for estimated costs, beginning balance	(15,805)	(11,840)
Cash Payments (Receipts)	3,965	1,012
Remeasurement of Assets and Liabilities		423
Deconsolidation		4,419
Total liability for estimated costs, ending balance	(11,840)	(5,986)
Liability [Member] | Liquidation Value [Member] | Corporate Expenditures [Member]
Business Acquisition [Line Items]
Total liability for estimated costs, beginning balance	(49,820)	(44,582)
Cash Payments (Receipts)	6,679	12,471
Remeasurement of Assets and Liabilities	(1,441)	(1,723)
Total liability for estimated costs, ending balance	$ (44,582)	$ (33,834)