Schedule III - Real Estate and Accumulated Depreciation (Notes to Schedule III) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Entity Incorporate, Date of Incorporation, Year	1991
Building [Member]
Property, Plant and Equipment, Useful Life, Average	40
Subsequent property additions purchased from NHC [Member]
Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements	33,909