Debt Intruments (narrative) (detail) - USD ($)	9 Months Ended
	Dec. 26, 2015	Dec. 27, 2014
Debt Instruments [Abstract]
Line of Credit Facility, Amount Outstanding	$ 309,211,000	$ 255,000,000
Line of Credit Facility [Line Items]
Line Of Credit Accordion Feature	150,000,000
Inventory Change	84,032,000
Defined Benefit Plan, Contributions by Employer	23,100,000	$ 350,000
Relationship Transfer Agreement	24,275,000
Purchase Price	23,784,000
Production Period [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity	475,000,000
Line Of Credit Accordion Feature	100,000,000
Nonproduction Period [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity	400,000,000
Line Of Credit Accordion Feature	$ 75,000,000