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Restructuring Charges - Restructuring Activities (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended					12 Months Ended	3 Months Ended	12 Months Ended		3 Months Ended			12 Months Ended	3 Months Ended	12 Months Ended		3 Months Ended		12 Months Ended
	Dec. 30, 2012	Sep. 30, 2012	Apr. 01, 2012 Workforce Reduction [Member]	Jan. 01, 2012 Workforce Reduction [Member]	Mar. 31, 2013 Workforce Reduction [Member] 2012 Restructuring Charge [Member]	Dec. 30, 2012 Workforce Reduction [Member] 2012 Restructuring Charge [Member]	Mar. 31, 2013 Workforce Reduction [Member] 2011 Restructuring Charge [Member]	Dec. 30, 2012 Workforce Reduction [Member] 2011 Restructuring Charge [Member]	Jan. 01, 2012 Workforce Reduction [Member] 2011 Restructuring Charge [Member]	Apr. 01, 2012 Fixed Asset Impairment [Member]	Jan. 01, 2012 Fixed Asset Impairment [Member]	Mar. 31, 2013 Fixed Asset Impairment [Member] 2012 Restructuring Charge [Member]	Dec. 30, 2012 Fixed Asset Impairment [Member] 2012 Restructuring Charge [Member]	Mar. 31, 2013 Fixed Asset Impairment [Member] 2011 Restructuring Charge [Member]	Dec. 30, 2012 Fixed Asset Impairment [Member] 2011 Restructuring Charge [Member]	Jan. 01, 2012 Fixed Asset Impairment [Member] 2011 Restructuring Charge [Member]	Apr. 01, 2012 Other Related Exit Costs [Member]	Mar. 31, 2013 Other Related Exit Costs [Member] 2012 Restructuring Charge [Member]	Dec. 30, 2012 Other Related Exit Costs [Member] 2012 Restructuring Charge [Member]
Restructuring Cost and Reserve [Line Items]
Total Restructuring Charge	$ 2,300	$ 800				$ 8,465			$ 4,979				$ 9,364			$ 776			$ 1,596
Costs Incurred			5,400	5,000	2,566	5,205	101	3,450	867	9,300	800	0	9,364	0	0	776	1,600	75	1,168
Restructuring Reserve					$ 694		$ 561					$ 0		$ 0				$ 353

X

- Definition

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

+ 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=6394695&loc=d3e140904-122747



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 146

-Paragraph 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 95-3

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 5.P.3)

-URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140864-122747



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869



Reference 5: 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=6394695&loc=d3e140904-122747

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- 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 Emerging Issues Task Force (EITF)

-Number 95-3

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 2: 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=6394695&loc=d3e140904-122747



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant