Fair Value Measurements (Details 3) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2013
Carrying Amount
Dec. 31, 2013
Fair Value
Dec. 31, 2013
Recurring basis
Carrying Amount
Interest rates swaps
Dec. 31, 2013
Recurring basis
Fair Value
Interest rates swaps
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Carrying Amount
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Fair Value
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Recurring basis
Carrying Amount
Interest rates swaps
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Recurring basis
Fair Value
Interest rates swaps
Fair value of other financial instruments                    
Cash   $ 56,478 $ 56,478       $ 2,614 $ 2,614    
Debt   42,821 44,130       84,489 86,982    
Derivative liabilities $ 397     $ 397 $ 397 $ 643     $ 643 $ 643