Real Estate and Loans Receivable - Leasing Operations - Additional Information (Detail) (Leasing Operations [Member], USD $) In Millions, unless otherwise specified	0 Months Ended	12 Months Ended	3 Months Ended
	Jul. 03, 2012 Prime Health Care Services [Member]	Dec. 31, 2013 Prime Health Care Services [Member]	Dec. 31, 2011 LTACH Facility [Member]
Significant Acquisitions and Disposals [Line Items]
Master lease term		10 years
Master lease agreements, number of renewal options	2
Master lease, optional lease term		5 years
Lease escalation percentage	100.00%
Wrote off in related straight-line rent receivables			$ 1.3
Amortization expense related to intangible lease assets			$ 0.6