Condensed Combined Balance Sheets of Limited Liabilities Accounted for under Equity Method (Parenthetical) (Detail) - Arlington Medical Properties	3 Months Ended	12 Months Ended
Mar. 31, 2016	Dec. 31, 2015
Schedule Of Equity Method Investments [Line Items]
Percentage of minority ownership purchased from third-party members	10.00%
Cash payment made purchased addition of ownership interest	85.00%	75.00%

Percentage of voting equity interests acquired at the acquisition date in the business combination.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant