Restructuring (table) (detail) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Oct. 01, 2016	Jul. 02, 2016	Sep. 26, 2015	Jun. 27, 2015	Oct. 01, 2016	Sep. 26, 2015
Restructuring Cost and Reserve [Line Items]
Balance		$ 8,872		$ 1,249	$ 8,872	$ 1,249
Plant Restructuring	$ 277	1,185	$ 15	(81)	1,462	(66)
Cash payments/write offs					(3,125)	(889)
Balance	7,209		294		7,209	294
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Balance		0		715	0	715
Plant Restructuring	112	127	15	(81)
Cash payments/write offs					(123)	(649)
Balance	116		0		116	0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Balance		3,897		270	3,897	270
Plant Restructuring	451	1,064	0	0
Cash payments/write offs					(3,242)
Balance	2,170		30		2,170	30
Long Lived Asset Charges [Member]
Restructuring Cost and Reserve [Line Items]
Balance		4,975		264	4,975	264
Plant Restructuring	(286)	$ (6)	0	$ 0
Cash payments/write offs					(240)
Balance	$ 4,923		$ 264		$ 4,923	$ 264