Summary Of Significant Accounting Policies (Schedule Of Range Of Useful Life Of Equipment) (Details)	12 Months Ended
	Dec. 31, 2012
Minimum [Member] | Computer Hardware And Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Minimum [Member] | Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Minimum [Member] | Transportation Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Minimum [Member] | Manufacturing Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	2 years
Maximum [Member] | Computer Hardware And Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	7 years
Maximum [Member] | Furniture And Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	10 years
Maximum [Member] | Transportation Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	20 years
Maximum [Member] | Manufacturing Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	15 years