Special Charges - Activity and Liability Balances for Exit Costs (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Restructuring Cost and Reserve [Line Items]
Charged to costs and expenses	$ 2,259	$ 4,349	$ 3,292	$ 13,953
March 2014 Initiative [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance			7,488
Charged to costs and expenses	2,000		2,651
Payments			(9,805)
Ending Balance	334		334
March 2014 Initiative [Member] | Workforce Reductions [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance			3,177
Charged to costs and expenses			2,724
Payments			(5,567)
Ending Balance	334		334
March 2014 Initiative [Member] | Contract Cancellation and Other [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance			4,311
Charged to costs and expenses			(73)
Payments			(4,238)
Ending Balance
June 2013 Initiative [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance			8,149
Charged to costs and expenses	300		641
Payments			(2,015)
Ending Balance	6,775		6,775
June 2013 Initiative [Member] | Workforce Reductions [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance			3,528
Charged to costs and expenses			641
Payments			(1,404)
Ending Balance	2,765		2,765
June 2013 Initiative [Member] | Facilities and Other [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance			4,621
Charged to costs and expenses
Payments			(611)
Ending Balance	$ 4,010		$ 4,010