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Retirement Plan - Schedule of Net Periodic Pension Cost (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 27, 2019	Jun. 28, 2018	Jun. 29, 2017
Retirement Benefits [Abstract]
Service cost	$ 610	$ 607	$ 631
Interest cost	895	851	811
Recognized loss amortization	95	162	365
Prior service cost amortization	957	957	957
Net periodic benefit cost	$ 2,557	$ 2,577	$ 2,764

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