Major Customers (Significant Customers As A Percentage Of Total Net Sales) (Details)	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenue, Major Customer [Line Items]
Percentage of total net sales	10.00%
Customer A [Member]
Revenue, Major Customer [Line Items]
Percentage of total net sales	20.70%	19.80%	17.50%
Customer B [Member]
Revenue, Major Customer [Line Items]
Percentage of total net sales	10.50%	9.80%	5.70%