Real Estate and Lending Activities - Disposals - Additional Information (Detail) (USD $)	6 Months Ended	1 Months Ended
Jun. 30, 2013	Apr. 30, 2013 Disposals [Member] Summit Hospital of Southeast Arizona and Summit Hospital of Southeast Texas [Member] Hospital
Significant Acquisitions and Disposals [Line Items]
Proceeds from sale of real estate	$ 18,409,000	$ 18,409,000
Gain (loss) on sale of real estate		$ 2,100,000
Number of hospitals sold		2

The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Name:	us-gaap_GainLossOnSaleOfProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration