Reportable Segments - Summary of Assets by Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified					7 Months Ended	12 Months Ended
	Jul. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012	Jul. 31, 2014 Corporate, Non-Segment [Member]	Dec. 31, 2013 Corporate, Non-Segment [Member]	Jul. 31, 2014 Operating Segments [Member]	Dec. 31, 2013 Operating Segments [Member]
Assets
Operating properties					$ 874,237	$ 845,698
Loan assets							105,614	147,702
REIT securities
Cash and cash equivalents	111,096	112,512	165,762	97,682			111,096	112,512
Restricted cash		13,372					401	186
Accounts receivable and prepaids							837	543
Deferred financing costs							2,442	2,645
Assets held for sale		23,038					2,414	23,038
TOTAL ASSETS		1,132,324					1,097,041	1,132,324
Capital Expenditures
Operating Properties					$ 3,840	$ 3,892