Real Estate and Lending Activities - Florence Facility - Additional Information (Detail) (Florence acute care facility [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 06, 2013
Florence acute care facility [Member]
Significant Acquisitions and Disposals [Line Items]
Letter of credit outstanding	$ 1.2
Business acquisition cost of acquired entity		27.2
Outstanding rent receivables		$ 1.1

Future rental payments receivable within one year of the balance sheet date under an operating lease.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant