Derivative Financial Instruments (Details) (Interest rates swaps, Designated as hedge, Cash flow hedges, USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended
Jun. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013 Ziegler Healthcare Real Estate Funds	Jun. 30, 2013 Ziegler Healthcare Real Estate Funds
Derivative financial instruments
Notional amount	$ 7.8	$ 7.8	$ 7.9
Gains recognized	$ 0.03	$ 0.10		$ 0.10	$ 0.20

Amount of increase in the fair value of derivatives recognized in the income statement.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (a),(c),(d),(e)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

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