Gains and Losses on the Sale of Property, Plant and Equipment (detail) (USD $)	3 Months Ended
	Jun. 28, 2014	Jun. 29, 2013
Property Plant And Equipment [Abstract]
Gain (Loss) on Disposition of Assets	$ 29,000	$ 743,000
Gain Loss On Purchase Of Business During Period		571,000
Accrual For Environmental Loss	$ 250,000