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, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Reorganizations [Abstract]
Estimated net inflows from investments in real estate and loans receivable, beginning balance	$ 38,400
Sales costs, beginning balance	(15,805)
Corporate expenditures, beginning balance	(49,820)
Total liability for estimated costs, beginning balance	(65,625)
Total liability for estimated costs in excess of estimated receipts during liquidation	(27,225)
Cash payments on estimated net inflows from investments in real estate and loans receivable	(5,183)
Cash payments on Sales costs	3,965
Cash payments on Corporate expenditures	6,679
Cash payments on total liability for estimated costs	10,644
Cash payments on total liability for estimated costs in excess of estimated receipts during liquidation	5,461
Remeasurement of Assets to estimated net inflows from investments in real estate and loans receivable	(8,048)
Remeasurement of Liabilities to Sales costs	0
Remeasurement of Liabilities to Corporate expenditures	(1,441)
Remeasurement of Liabilities to total liability for estimated costs	(1,441)
Remeasurement of Assets and Liabilities to total liability for estimated costs in excess of estimated receipts during liquidation	(9,489)
Estimated net inflows from investments in real estate and loans receivable, ending balance	25,169
Sales costs, Estimated net inflows from investments in real estate and loans receivable, ending balance	(11,840)
Corporate expenditures, Estimated net inflows from investments in real estate and loans receivable, ending balance	(44,582)
Total liability for estimated costs, Estimated net inflows from investments in real estate and loans receivable, ending balance	(56,422)
Total liability for estimated costs in excess of estimated receipts during liquidation, Estimated net inflows from investments in real estate and loans receivable, ending balance	$ (31,253)