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Restructuring (table) (detail) (USD $)
3 Months Ended 6 Months Ended
Sep. 27, 2014
Sep. 28, 2013
Sep. 27, 2014
Sep. 28, 2013
Restructuring Cost and Reserve [Line Items]        
Plant Restructuring $ 0 $ 347,000 $ 0 $ 501,000