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Restructuring (table) (detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 26, 2015
Jun. 27, 2015
Sep. 27, 2014
Sep. 26, 2015
Sep. 27, 2014
Restructuring Cost and Reserve [Line Items]          
Balance   $ 1,249   $ 1,249 $ 10
Plant Restructuring $ 15 (81) $ 0 (66) 0
Cash payments/write offs       (889) (5)
Balance 294   5 294 5
Employee Severance [Member]          
Restructuring Cost and Reserve [Line Items]          
Balance   715   715 10
Plant Restructuring 15 (81)      
Cash payments/write offs       (649) (5)
Balance 0   $ 5 0 $ 5
Other Restructuring [Member]          
Restructuring Cost and Reserve [Line Items]          
Balance   270   270  
Plant Restructuring 0 0      
Cash payments/write offs       (240)  
Balance 30     30  
Long Lived Asset Charges [Member]          
Restructuring Cost and Reserve [Line Items]          
Balance   264   264  
Plant Restructuring 0 $ 0      
Cash payments/write offs       0  
Balance $ 264     $ 264