v2.4.0.6

Geographic and Significant Customer Information - Summary of Different Geographic Regions (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 28, 2012	Dec. 30, 2011	Sep. 28, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue by Geographic Region	$ 75,014	$ 73,035
Long-Lived Assets by Geographic Region	29,548		30,209
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue by Geographic Region	44,440	37,685
Long-Lived Assets by Geographic Region	22,383		23,027
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue by Geographic Region	30,574	35,350
Long-Lived Assets by Geographic Region	$ 7,165		$ 7,182

X

- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 131

-Paragraph 38

-Subparagraph b(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

+ Details

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

X

- Definition

Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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

X

- Details

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