Commitments and Contingencies (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 03, 2016	Jan. 01, 2017	Oct. 03, 2016
Loss Contingencies [Line Items]
Environmental remediation accrual	$ 6,701	$ 6,192
Amount of financial liability included in other accrued expenses of current liability	584	492
Expected reimbursement accrual	1,606	1,379
Goodwill write-off	$ 64,174
Financial Standby Letter of Credit
Loss Contingencies [Line Items]
Environmental remediation accrual		$ 3,114	$ 3,114