Significant Accounting Policies (Estimated Useful Lives Of Assets) (Details)	3 Months Ended
Mar. 31, 2012
Buildings And Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets, minimum (in years)	5
Estimated useful lives of assets, maximum (in years)	40
Furniture, Fixtures And Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of assets, minimum (in years)	5
Estimated useful lives of assets, maximum (in years)	10

The maximum useful life of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLifeMaximum
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration