v2.4.0.8
Investments in Partially-Owned Entities (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended 12 Months Ended 1 Months Ended 3 Months Ended 9 Months Ended 1 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Star Asia Opportunity, LLC
Aug. 31, 2011
Star Asia Opportunity, LLC
Sep. 30, 2012
Star Asia Opportunity II, LLC
investor
Dec. 20, 2012
Star Asia Opportunity II, LLC
investor
Sep. 30, 2013
Senior Management Concepts Senior Living Portfolio
Sep. 30, 2013
Senior Management Concepts Senior Living Portfolio
Dec. 31, 2011
Senior Management Concepts Senior Living Portfolio
Assisted living units
Dec. 31, 2011
Senior Management Concepts Senior Living Portfolio
Independent living units
Aug. 31, 2011
Japan
Star Asia Opportunity, LLC
property
May 31, 2011
Utah
Senior Management Concepts Senior Living Portfolio
affiliate
property
Sep. 30, 2013
Utah
Senior Management Concepts Senior Living Portfolio
Dec. 31, 2012
Utah
Senior Management Concepts Senior Living Portfolio
Dec. 31, 2011
Utah
Senior Management Concepts Senior Living Portfolio
unit
May 31, 2011
Utah
Senior Management Concepts Senior Living Portfolio
Preferred equity interest
May 31, 2011
Utah
Senior Management Concepts Senior Living Portfolio
Common equity interest
Schedule of Equity Method Investments [Line Items]                                      
Ownership percentage           27.59% 20.33% 50.00%                   100.00% 10.00%
Number of investors             4                        
Number of real estate properties held                         6 1          
Distributions received     $ 167 $ 242 $ 4,982                            
Payments to acquire equity method investments     0 4,700     4,700                        
Number of investors               2                      
Number of affiliates                           4          
Lease term (in years)                           15 years          
Number of units (in units)                                 120    
Number of assisted living facility units (as a percent)                     50.00% 50.00%              
Losses from equity method investment (1,800) (272) (3,213) (1,053)                     250 243      
Impairment charge                 $ 40 $ 40