INCOME TAXES - Reconciliation of Income Tax Computed at the Federal Statutary Rate to Actual Tax Expenses (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 30, 2012	Oct. 02, 2011	Oct. 03, 2010
Income Tax Disclosure [Abstract]
Tax computed at federal statutory rate	$ (5,153)	$ 7,717	$ 19,261
State taxes, net of federal impact	(3,244)	(7,023)	2,147
Foreign income taxed at different rates	(18,207)	(9,830)	(14,621)
Tax credits	(1,096)	(4,234)	(3,025)
Stock award compensation	295	347	3,288
Unrecognized tax benefits	1,981	1,541	2,325
Executive compensation	0	444	1,312
U.S. tax on foreign income	2,767	0	212
Income tax return to provision	(3,153)	55	(347)
Non-deductible permanent items	1,682	2,748	862
Pre-acquisition loss carryforwards	(4,043)	(2,298)	0
Other differences, net	9	(261)	195
Valuation allowance	43,112	(22,887)	(15,616)
Provision (benefit) for income taxes	$ 14,950	$ (33,681)	$ (4,007)

Income Tax Reconciliation, Income Tax Return to Provision

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Income Tax Reconciliation, Officer Compensation

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Income Tax Reconciliation Pre-Acquisition Loss Carryforward

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Income Tax Reconciliation, Unrecognized Tax Benefit

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Income Tax Reconciliation, U.S. Tax on Foreign Income

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period.

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The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to total foreign income tax expense or benefit. The foreign income tax expense or benefit difference represents the income tax expense or benefit at applicable domestic statutory income tax rates applied to foreign earnings or loss for the period versus the foreign income tax expense or benefit calculated by applying the appropriate foreign tax rates.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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The sum of the differences between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to nondeductible expenses under enacted tax laws, or differences in the methodologies used to determine expense amounts for financial statements prepared in accordance with generally accepted accounting principles and enacted tax laws.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to differences in the deductibility of incentive stock options and other equity-based compensation costs in accordance with generally accepted accounting principles and enacted tax laws.

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The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the year/accounting period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to all other items not otherwise listed in the existing taxonomy.

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