SCHEDULE III REAL ESTATE AND ACCUMULATED DEPRECIATION (Details 2)	12 Months Ended
Dec. 31, 2012
Buildings \| Minimum
Land, Buildings and Improvements
Useful life	35 years
Buildings \| Maximum
Land, Buildings and Improvements
Useful life	45 years
Building improvements \| Minimum
Land, Buildings and Improvements
Useful life	10 years
Building improvements \| Maximum
Land, Buildings and Improvements
Useful life	20 years

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration