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Discontinued Operations (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 27, 2014
Jun. 28, 2013
Jun. 27, 2014
Jun. 28, 2013
Discontinued Operations and Disposal Groups [Abstract]        
Earnings from discontinued operations, before tax $ 513   $ 513  
Earnings from discontinued operations, net of taxes $ 379 $ 0 $ 379 $ 0