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Derivative Financial Instruments (Details 2) (USD $)
3 Months Ended
Mar. 29, 2014
Mar. 29, 2014
Other assets, net
Dec. 28, 2013
Other assets, net
Derivative Financial Instruments      
Description of variable rate LIBOR    
Gains or losses from the hedging instrument which was excluded from the assessment of effectiveness $ 0    
Derivative financial instrument      
Fair value of interest rate swap   $ 514,000 $ 513,000