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Significant Tenant (Details) (Five Star) | 3 Months Ended
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Mar. 31, 2013 item
Senior living communities |
Significant tenant disclosures |
Number of properties acquired, referred to as managed properties | 39
Managed Senior Living Communities |
Significant tenant disclosures |
Number of properties acquired, referred to as managed properties | 39
Rental income | Rents from significant lessee |
Significant tenant disclosures |
Percentage of total rents leased or managed | 43.40%
Investment | Rents from significant lessee |
Significant tenant disclosures |
Percentage of total rents leased or managed | 41.50%

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