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Fair Value Measurements (Details) (USD $)
3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 7 Months Ended 9 Months Ended 12 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2013
Sep. 30, 2013
Sep. 30, 2013
Recurring basis
Significant Other Observable Inputs (Level 2)
Interest rates swaps
Sep. 30, 2013
Recurring basis
Significant Other Observable Inputs (Level 2)
Interest rates swaps
Sep. 30, 2013
Nonrecurring basis
Jul. 23, 2013
Ziegler Healthcare Real Estate Funds
Sep. 30, 2012
Ziegler Healthcare Real Estate Funds
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Dec. 31, 2011
Ziegler Healthcare Real Estate Funds
Sep. 30, 2012
Ziegler Healthcare Real Estate Funds
Recurring basis
Significant Other Observable Inputs (Level 2)
Interest rates swaps
Sep. 30, 2012
Ziegler Healthcare Real Estate Funds
Recurring basis
Significant Other Observable Inputs (Level 2)
Interest rates swaps
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Recurring basis
Significant Other Observable Inputs (Level 2)
Interest rates swaps
Dec. 31, 2011
Ziegler Healthcare Real Estate Funds
Recurring basis
Significant Other Observable Inputs (Level 2)
Interest rates swaps
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Nonrecurring basis
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Nonrecurring basis
Medical office buildings
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Nonrecurring basis
Land
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Nonrecurring basis
Property under development
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Nonrecurring basis
Fair Value
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Nonrecurring basis
Fair Value
Medical office buildings
Dec. 31, 2011
Ziegler Healthcare Real Estate Funds
Nonrecurring basis
Fair Value
Medical office buildings
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Nonrecurring basis
Fair Value
Land
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Nonrecurring basis
Fair Value
Property under development
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Nonrecurring basis
Significant Unobservable Inputs (Level 3)
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Nonrecurring basis
Significant Unobservable Inputs (Level 3)
Medical office buildings
Dec. 31, 2011
Ziegler Healthcare Real Estate Funds
Nonrecurring basis
Significant Unobservable Inputs (Level 3)
Medical office buildings
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Nonrecurring basis
Significant Unobservable Inputs (Level 3)
Land
Dec. 31, 2012
Ziegler Healthcare Real Estate Funds
Nonrecurring basis
Significant Unobservable Inputs (Level 3)
Property under development
Fair value measurements                                                      
Fair value of derivative $ (437,000) $ (437,000)           $ (643,000) $ (764,994)     $ (642,940) $ (764,994)                            
Changes in fair value of the derivative 16,000 206,000 (200,000) (200,000)   190,000 58,000 122,054 (324,824) (200,000) (100,000) (122,054) 324,824                            
Assets fair value                                   5,474,000 3,589,000 2,954,837 1,210,000 675,000 5,474,000 3,589,000 2,954,837 1,210,000 675,000
Assets subject to impairment         0                                            
Total Gains (Losses)                           $ (937,000) $ (615,000) $ (232,000) $ (90,000)