Contingent Liabilities - Additional Information (Detail) $ in Thousands	3 Months Ended			6 Months Ended
	Dec. 26, 2015 USD ($)	Jun. 27, 2015 USD ($) Location	Dec. 27, 2014 USD ($)	Dec. 26, 2015 USD ($) Facility project	Dec. 27, 2014 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Environmental remediation contingency, project nearing completion | project				4
Environmental remediation contingency, project in process | project				4
Environmental remediation contingency, previously purchased locations | Location		3
Reserves related to environmental matters | $	$ 4,341	$ 4,711		$ 4,341
Expenses related to environmental matters | $	$ 318		$ 150	$ 370	$ 355
Environmental remediation contingency, number of sites for environmental assessments | Facility				6