Schedule III - Reconciliation of Real Estate Assets and Accumulated Depreciation (Detail) - USD ($) $ in Thousands		7 Months Ended	12 Months Ended
		Jul. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Real Estate
Balance at beginning of period		$ 670,868	$ 587,952	$ 670,868	$ 421,989
Additions during the period:
Other acquisitions				55,923	258,153
Improvements, etc.			3,632	10,273	6,165
Liquidation adjustment			(12,580)	166,603
Other additions					41,967
Deductions during this period:
Cost of real estate sold			(82,793)	(99,679)	(27,974)
Other deductions			0	0	0
Asset impairments				(9,287)	(2,799)
Deconsolidation of property		(9,287)	(118,765)	(140,491)	(2,904)
Disposal of fully amortized assets				(5,293)	(1,082)
Transfer of discontinued operations				(60,965)	(25,551)
Balance at end of period			377,446	587,952	670,868
Accumulated Depreciation
Balance at beginning of period		$ 56,448	30,627	56,448	51,553
Additions charged to operating expenses				10,595	13,671
Disposal of properties			(2,227)	(5,268)	(4,946)
Deconsolidation of property			(4,816)	(16,017)
Transfer (to) from discontinued operations, net	[1]			(9,838)	(2,748)
Disposal of fully amortized assets				(5,293)	(1,082)
Balance at end of period			$ 23,584	$ 30,627	$ 56,448

[1] In 2014, the Englewood, Colorado; Chicago, Illinois (River City); Louisville, Kentucky; and Amherst, New York properties were placed into discontinued operations. In 2013, the Deer Valley, Arizona; Meriden, Connecticut; Lisle, Illinois; Andover, Massachusetts; Denton, Texas and Seabrook, Texas properties were placed into discontinued operations.