Basis Of Presentation (Estimated useful lives Of Property, Plant And Equipment) (Details)	12 Months Ended
	Dec. 31, 2012
Maximum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of property, plant and equipment	17 years
Maximum [Member] | Equipment, Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of property, plant and equipment	10 years
Minimum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of property, plant and equipment	2 years
Minimum [Member] | Equipment, Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of property, plant and equipment	5 years