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Subsequent Event (Details) (USD $)
In Millions, unless otherwise specified
0 Months Ended
Dec. 31, 2012
Center
Mar. 06, 2013
Subsequent Event
Skilled Nursing Center
Kansas
Center
Mar. 06, 2013
Subsequent Event
Scenario, Forecast
Skilled Nursing Center
Kansas
Subsequent Event [Line Items]      
Number of nursing centers 48 5  
Purchase price per definitive agreement     $ 15.5
Annual revenues     $ 24