Summary Of Significant Accounting Policies (Schedule Of Estimated Useful Lives For Property And Equipment) (Details)	12 Months Ended
	Dec. 31, 2011
Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum years	15
Estimated useful life, maximum years	20
Buildings And Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum years	15
Estimated useful life, maximum years	40
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	Shorter of remaining lease term or useful life of improvements
Machinery And Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum years	3
Estimated useful life, maximum years	7
Office Furniture And Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum years	3
Estimated useful life, maximum years	7
Computer Hardware And Software [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life, minimum years	3
Estimated useful life, maximum years	7