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Restructuring Activity (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 25, 2015
Jul. 26, 2015
Oct. 26, 2014
Oct. 25, 2015
Oct. 26, 2014
Restructuring Cost and Reserve [Line Items]          
Charges $ 962 $ 3,500 $ 0 $ 4,526 $ 1,001
One-time Termination Benefits [Member]          
Restructuring Cost and Reserve [Line Items]          
Beginning balance       282  
Charges       4,526  
Cash payments       (3,601)  
Ending balance $ 1,207     $ 1,207