Real Estate and Lending Activities - Development Activities - Additional Information (Detail) - Development Activities [Member]	3 Months Ended
Mar. 31, 2016 Facility
Business Acquisition [Line Items]
Number of facilities under construction	4
Acute Care Facilities in Altoona [Member]
Business Acquisition [Line Items]
Number of facilities constructed	5
Number of facilities leased	5

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration