The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 159

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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

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-Publisher FASB

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

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-Article 5

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The total amount the Company agreed to loan to a related party as evidenced by a signed contract.

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Notes Receivable From Related Parties.

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- Definition

Percentage of subsidiary ownership.

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Principal balance due and paid.

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No definition available.

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Purchases from related parties.

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Identify the stated interest rate per the agreement.

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Related Party Transactions - Additional Information (Detail) (USD $)	3 Months Ended			9 Months Ended
	Jun. 29, 2012	Dec. 30, 2011	Jul. 01, 2011	Jun. 29, 2012	Jul. 01, 2011	Sep. 30, 2011
Related Party Transaction
Ownership interest in dpiX Holding LLC	40.00%			40.00%
dpiX Holding LLC's ownership interest in dpiX LLC	100.00%			100.00%
Income (Loss) on equity investment in affiliate	$ 1,700,000		$ 300,000	$ 1,225,000	$ 4,488,000
Carrying value of the equity investment in dpiX Holding	46,200,000			46,200,000		46,700,000
Loan agreement, related party				8,800,000
Related party loan agreement, interest rate				Prime plus 1%
Principal balance due and paid		3,400,000
Notes receivable from related parties	5,400,000			5,400,000		8,800,000
Purchases of glass transistor arrays from dpiX	$ 2,900,000		$ 6,400,000	$ 10,900,000	$ 18,700,000