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Income Taxes (Schedule Of Income Tax Provisions And The Effective Tax Rate) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Jun. 29, 2013
Jun. 30, 2012
Income Taxes [Abstract]        
Provision for income taxes $ 1 $ 1 $ 3 $ 1
Effective tax rate