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Gains and Losses on the Sale of Property, Plant and Equipment (detail) - USD ($)
3 Months Ended
Jul. 02, 2016
Jun. 27, 2015
Property Plant And Equipment [Abstract]    
Gain (Loss) on Disposition of Assets $ 6,000 $ 76,000
Environmental Remediation Expense   60,000
Restructuring Cost and Reserve [Line Items]    
Prop 65 Litigation   $ 200,000