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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 29, 2017	Jun. 30, 2016	Jun. 25, 2015	Jun. 26, 2014
Income Tax Disclosure [Line Items]
Net change in the total valuation allowance	$ 0	$ (4)
Total gross amounts of unrecognized tax benefits	174	24	$ 248	$ 247
Unrecognized tax benefits and accrued interest and penalties long-term	$ 173	$ 62
United States [Member] | Tax Year 2015 [Member]
Income Tax Disclosure [Line Items]
Year of tax returns audit	2015
United States [Member] | Tax Year 2016 [Member]
Income Tax Disclosure [Line Items]
Year of tax returns audit	2016
Illinois [Member] | Tax Year 2015 [Member]
Income Tax Disclosure [Line Items]
Year of tax returns audit	2015
Illinois [Member] | Tax Year 2016 [Member]
Income Tax Disclosure [Line Items]
Year of tax returns audit	2016
California [Member] | Earliest Tax Year [Member]
Income Tax Disclosure [Line Items]
Year of tax return currently under audit	2013
California [Member] | Latest Tax Year [Member]
Income Tax Disclosure [Line Items]
Year of tax return currently under audit	2014
California [Member] | Tax Year 2015 [Member]
Income Tax Disclosure [Line Items]
Year of tax returns audit	2015
California [Member] | Tax Year 2016 [Member]
Income Tax Disclosure [Line Items]
Year of tax returns audit	2016

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Amount recognized for uncertainty in income taxes classified as noncurrent.

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
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-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 20
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