Pension (detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 28, 2014	Jun. 29, 2013
General Discussion Of Pension And Other Postretirement Benefits [Abstract]
Defined Benefit Plan, Service Cost	$ 1,868	$ 1,863
Defined Benefit Plan, Interest Cost	2,032	1,890
Defined Benefit Plan, Expected Return on Plan Assets	(2,740)	(2,373)
Defined Benefit Plan, Actuarial Net (Gains) Losses	31	584
Defined Benefit Plan, Net Periodic Benefit Cost	$ 1,191	$ 1,964