Inventory (detail) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 26, 2015	Dec. 27, 2014
Inventory Disclosure [Abstract]
Inventory, LIFO Reserve	$ 150,818,000	$ 164,269,000	$ 150,818,000	$ 164,269,000
Inventory, LIFO Reserve, Period Charge	$ 11,662,000	$ 5,315,000	$ 13,249,000	$ 10,885,000