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Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 28, 2018	Jun. 29, 2017	Sep. 25, 2008
Defined Benefit Plan And Defined Contribution Plan Disclosure [Line Items]
Long-term liability recorded for withdrawal from multi-employer plan	$ 323	$ 397	$ 868
Monthly payment including interest based on terms of settlement with labor union	$ 8
Employee Contribution First Three Percent [Member]
Defined Benefit Plan And Defined Contribution Plan Disclosure [Line Items]
Matching percentage by employer for 401(k) plan contributions	100.00%
Percent of employee contribution under contributory plan	3.00%
Employee Contribution Next Two Percent [Member]
Defined Benefit Plan And Defined Contribution Plan Disclosure [Line Items]
Matching percentage by employer for 401(k) plan contributions	50.00%
Percent of employee contribution under contributory plan	2.00%