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Restructuring (table) (detail) - USD ($)	3 Months Ended						9 Months Ended
	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Dec. 26, 2015	Sep. 26, 2015	Jun. 27, 2015	Dec. 31, 2016	Dec. 26, 2015
Restructuring Cost and Reserve [Line Items]
Balance			$ 8,872,000			$ 1,249,000	$ 8,872,000	$ 1,249,000
Plant Restructuring	$ 1,316,000	$ 277,000	1,185,000	$ 9,624,000	$ 15,000	(81,000)	2,778,000	9,558,000
Cash payments/write offs							(4,904,000)	(1,152,000)
Balance	6,746,000			9,655,000			6,746,000	9,655,000
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Balance			0			715,000	0	715,000
Plant Restructuring	1,261,000	112,000	127,000	104,000	$ 15,000	(81,000)
Cash payments/write offs							(1,480,000)	(649,000)
Balance	20,000			104,000			20,000	104,000
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Balance			3,897,000			270,000	3,897,000	270,000
Plant Restructuring	(7,000)	451,000	1,064,000	7,814,000
Cash payments/write offs							(3,588,000)	(503,000)
Balance	1,817,000			7,581,000			1,817,000	7,581,000
Long Lived Asset Charges [Member]
Restructuring Cost and Reserve [Line Items]
Balance			4,975,000			$ 264,000	4,975,000	264,000
Plant Restructuring	62,000	$ (286,000)	$ (6,000)	1,706,000
Cash payments/write offs							(164,000)
Balance	$ 4,909,000			$ 1,970,000			$ 4,909,000	$ 1,970,000

X

- Definition

Amount charged against earnings (net of any accrual reversal) in the period for incurred and estimated costs, excluding asset retirement obligations, associated with exit from or disposal of business activities or restructurings pursuant to a program that is planned and controlled by management, and materially changes either the scope of a business undertaken by an entity, or the manner in which that business is conducted.

+ References

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- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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