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Income Taxes - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified		3 Months Ended			12 Months Ended		3 Months Ended
	Sep. 25, 2014	Sep. 25, 2014 United States [Member] Earliest Tax Year [Member]	Sep. 25, 2014 Illinois [Member]	Sep. 25, 2014 Illinois [Member] Earliest Tax Year [Member]	Jun. 27, 2013 Illinois [Member] Earliest Tax Year [Member]	Jun. 28, 2012 California [Member] Earliest Tax Year [Member]	Sep. 25, 2014 State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Gross state tax credits							$ 3,649
Gross state tax net operating losses expiration dates							2024
Unrecognized tax benefits and accrued interest and penalties current
Unrecognized tax benefits and accrued interest and penalties long-term
Year of tax return audit		2011			2013	2009
Year of tax return currently under audit			2012	2011

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State Operating Loss Carryforwards Expiration Dates

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Tax year being audited in the income tax examination, in CCYY format.

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The current portion of the amount recognized for uncertain tax positions as of the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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The noncurrent portion of the amount recognized for uncertain tax positions as of the balance sheet date.

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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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