|
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 | |||||||||||||||||