Restructuring (table) (detail) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Dec. 26, 2015	Sep. 26, 2015	Jun. 27, 2015	Dec. 27, 2014	Dec. 26, 2015	Dec. 27, 2014
Restructuring Cost and Reserve [Line Items]
Balance			$ 1,249		$ 1,249	$ 10
Plant Restructuring	$ 9,624	$ 15	(81)	$ 889	9,558	889
Cash payments/write offs					(1,152)	(8)
Balance	9,655			891	9,655	891
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Balance			715		715	10
Plant Restructuring	104	$ 15	(81)	533
Cash payments/write offs					(649)	(8)
Balance	104			535	104	535
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Balance			270		270	0
Plant Restructuring	7,814			40
Cash payments/write offs					(503)	0
Balance	7,581			40	7,581	40
Long Lived Asset Charges [Member]
Restructuring Cost and Reserve [Line Items]
Balance			$ 264		264	0
Plant Restructuring	1,706			316
Balance	$ 1,970			$ 316	$ 1,970	$ 316